void createVertices() // Note: This can be done a lot more efficiently if multiple spheres have the same number of vertices
{
vertices = new VertexPositionColorNormal[nvertices];
Vector3 center = new Vector3(0, 0, 0);
Vector3 rad = new Vector3(1, 0, 0);
for (int x = 0; x < numVertices; x++)
{
float difx = 360.0f / (float)numVertices;
for (int y = 0; y < numVertices; y++)
{
float dify = 360.0f / (float)numVertices;
Matrix zrot = Matrix.CreateRotationZ(MathHelper.ToRadians(y * dify));
Matrix yrot = Matrix.CreateRotationY(MathHelper.ToRadians(x * difx));
Vector3 point = Vector3.Transform(Vector3.Transform(rad, zrot), yrot);
point.Normalize();
Vector3 normal = point;
vertices[x + y * numVertices] = new VertexPositionColorNormal()
{
Position = point, Color = color, Normal = normal
};
}
}
}
private VertexPositionColorNormal[] CreateBox()
{
var vertices = new VertexPositionColorNormal[]
{
// Front Surface
new VertexPositionColorNormal(new Vector3(-1.0f, -1.0f, 1.0f), Color.Blue, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, 1.0f, 1.0f), Color.Red, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, -1.0f, 1.0f), Color.Red, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, -1.0f, 1.0f), Color.Red, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, 1.0f, 1.0f), Color.Red, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, 1.0f, 1.0f), Color.Blue, new Vector3(1, 0, 1)),
// Back Surface
new VertexPositionColorNormal(new Vector3(1.0f, -1.0f, -1.0f), Color.Yellow, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, 1.0f, -1.0f), Color.Yellow, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, -1.0f, -1.0f), Color.Yellow, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, -1.0f, -1.0f), Color.Yellow, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, 1.0f, -1.0f), Color.Yellow, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, 1.0f, -1.0f), Color.Yellow, new Vector3(1, 0, 1)),
// Left Surface
new VertexPositionColorNormal(new Vector3(-1.0f, -1.0f, -1.0f), Color.Blue, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, 1.0f, -1.0f), Color.Blue, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, -1.0f, 1.0f), Color.Blue, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, -1.0f, 1.0f), Color.Blue, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, 1.0f, -1.0f), Color.Blue, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, 1.0f, 1.0f), Color.Blue, new Vector3(1, 0, 1)),
// Right Surface
new VertexPositionColorNormal(new Vector3(1.0f, -1.0f, 1.0f), Color.Violet, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, 1.0f, 1.0f), Color.Violet, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, -1.0f, -1.0f), Color.Violet, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, -1.0f, -1.0f), Color.Violet, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, 1.0f, 1.0f), Color.Violet, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, 1.0f, -1.0f), Color.Violet, new Vector3(1, 0, 1)),
// Top Surface
new VertexPositionColorNormal(new Vector3(-1.0f, 1.0f, 1.0f), Color.Green, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, 1.0f, -1.0f), Color.Green, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, 1.0f, 1.0f), Color.Green, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, 1.0f, 1.0f), Color.Green, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, 1.0f, -1.0f), Color.Green, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, 1.0f, -1.0f), Color.Green, new Vector3(1, 0, 1)),
// Bottom Surface
new VertexPositionColorNormal(new Vector3(-1.0f, -1.0f, -1.0f), Color.Orange, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, -1.0f, 1.0f), Color.Orange, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, -1.0f, -1.0f), Color.Orange, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, -1.0f, -1.0f), Color.Orange, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(-1.0f, -1.0f, 1.0f), Color.Orange, new Vector3(1, 0, 1)),
new VertexPositionColorNormal(new Vector3(1.0f, -1.0f, 1.0f), Color.Orange, new Vector3(1, 0, 1)),
};
return vertices;
}
public static IEnumerable <VertexPositionColorNormal> getTris(VertexPositionColorNormal[] source, int Depth, int Width)
{
VertexPositionColorNormal[,] Data = new VertexPositionColorNormal[Width, Depth]; //The new, easy to read 2D array
for (int x = 0; x < Width; x++) //Convert!
{
for (int y = 0; y < Depth; y++)
{
Data[x, y] = source[x + y * Width];
}
}
var result = new List <VertexPositionColorNormal>();
for (int x = 0; x < Width - 1; x++)
{
for (int y = 0; y < Depth - 1; y++)
{
var a = Data[x, y];
var b = Data[x + 1, y];
var c = Data[x, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
}
}
}
for (int x = 1; x < Width; x++)
{
for (int y = 0; y < Depth - 1; y++)
{
var a = Data[x, y];
var b = Data[x, y + 1];
var c = Data[x - 1, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
}
}
}
return(result);
}
private static void GenerateNormals(VertexPositionColorNormal[] vertices, int[] indices)
{
for (int i = 0; i < indices.Length / 3; i++)
{
Vector3 firstvec = vertices[indices[i * 3 + 1]].Position - vertices[indices[i * 3]].Position;
Vector3 secondvec = vertices[indices[i * 3]].Position - vertices[indices[i * 3 + 2]].Position;
Vector3 normal = Vector3.Cross(firstvec, secondvec);
normal.Normalize();
vertices[indices[i * 3]].Normal += normal;
vertices[indices[i * 3 + 1]].Normal += normal;
vertices[indices[i * 3 + 2]].Normal += normal;
}
for (int i = 0; i < vertices.Length; i++)
vertices[i].Normal.Normalize();
}
public override void Generate(int TerrainDepth, int TerrainWidth, int Spacing, GraphicsDevice gd)
{
var Terrain = new VertexPositionColorNormal[TerrainDepth * TerrainWidth];
for (int i = 0; i != TerrainWidth; i++)
{
for (int j = 0; j != TerrainDepth; j++)
{
VertexPositionColorNormal vpc = new VertexPositionColorNormal();
vpc.Color = Utils.BrownishColours[Utils.RNG.Next(Utils.BrownishColours.Length - 1)];
if (i == 0 || j == 0 ||
i == TerrainWidth - 1 || j == TerrainDepth - 1)
{
vpc.Position = new Vector3(Spacing * i, 0, Spacing * j);
vpc.Position *= 1.125f;
vpc.Position.Y = -500;
vpc.Color.A = 0;
}
else
{
float X = (Spacing * i);// + (x - 1) * Consts.spacing) - (Consts.spacing / 2);
//float Y = (proceduralGeneration.generateHeight(
// Spacing * i, Spacing * j) * 1.5f);// - 60;
//Y = Utils.Map(Y, -40, 40, -10, 10);
//Y *= 2;
float Y = Utils.generateOffset(Spacing * Utils.RNG.Next() * i, Spacing * Utils.RNG.Next() * j, 0.5f, 0.324234f) * 5;
float Z = (Spacing * j);// + (y - 1) * Consts.spacing) - (Consts.spacing / 2);
vpc.Position = new Vector3(X, Y, Z);
}
Terrain[i + j * TerrainWidth] = vpc;
}
}
uint[, ][] empty;
Terrain = Utils.getTrisAlternating(Terrain, TerrainDepth, TerrainWidth, out empty).ToArray();
Utils.GenerateNormals(ref Terrain);
VertexBuffer = new VertexBuffer(gd, VertexPositionColorNormal.VertexDeclaration, Terrain.Length, BufferUsage.WriteOnly);
VertexBuffer.SetData(Terrain);
ID = new Color(Utils.RNG.Next(255), Utils.RNG.Next(255), Utils.RNG.Next(255));
}
private VertexPositionColorNormal[] loadVertices(HeightMap heightMap, float heightScale)
{
VertexPositionColorNormal[] vertices = new VertexPositionColorNormal[this.width * this.height];
for (int x = 0; x < this.width; x++)
{
for (int y = 0; y < this.height; y++)
{
int v = x + y * this.width;
float h = heightMap[x, y] * heightScale;
vertices[v].Position = new Vector3(x, h, -y);
vertices[v].Color = Color.Green;
}
}
return(vertices);
}
public void GenerateCircle(int TerrainDepth, int TerrainWidth, int Spacing, float Radius, GraphicsDevice gd)
{
var TempVertices = new VertexPositionColorNormal[TerrainDepth, TerrainWidth];
this.Spacing = Spacing;
ID = Color.White;
Width = TerrainWidth;
Depth = TerrainDepth;
TotalWaterSizeX = TerrainWidth * Spacing;
TotalWaterSizeZ = TerrainDepth * Spacing;
tempVecs = new Vector3[Width * Depth];
for (int x = 0; x < TerrainDepth; x++)
{
for (int z = 0; z < TerrainWidth; z++)
{
VertexPositionColorNormal vpc = new VertexPositionColorNormal();
vpc.Position = new Vector3((x * Spacing) - (TotalWaterSizeX / 2f), -85, (z * Spacing) - (TotalWaterSizeZ / 2f));
vpc.Color = new Color(0, 0, 0, 0);
if (Vector2.Distance(new Vector2(vpc.Position.X, vpc.Position.Z), new Vector2(0)) <= Radius)
{
vpc.Color = Utils.BlueishColours[Utils.RNG.Next(Utils.BlueishColours.Length - 1)];
//vpc.Color = Color.Lerp(vpc.Color, Color.Transparent, Vector2.Distance(new Vector2(vpc.Position.X, vpc.Position.Z), new Vector2(0)) / (Radius*2));
//vpc.Color = new Color(vpc.Color.ToVector4().Slerp(Color.Transparent.ToVector4(), Vector2.Distance(new Vector2(vpc.Position.X, vpc.Position.Z), new Vector2(0)) / (Radius)));
}
else if (Vector2.Distance(new Vector2(vpc.Position.X, vpc.Position.Z), new Vector2(0)) <= Radius + Spacing + 25)
{
vpc.Color = new Color(0, 0, 0, 1);
}
TempVertices[x, z] = vpc;
tempVecs[x + z * Width] = vpc.Position;
}
}
Indices = new uint[TerrainWidth, TerrainDepth][];
Vertices = Utils.getTrisAlternating(TempVertices, TerrainWidth, TerrainDepth, out Indices).ToArray();
Utils.GenerateNormals(ref Vertices);
VertexBuffer = new VertexBuffer(gd, VertexPositionColorNormal.VertexDeclaration, Vertices.Length, BufferUsage.WriteOnly);
VertexBuffer.SetData(Vertices);
}
private unsafe void UpdateBuffers(RectangleF view, int zoomLevel, int sampleResolution = 9)
{
// y = latitude
// x = longitude
// we only need to generate this if our resolution changes or our index buffer is null
if (_indexBuffer == null || sampleResolution != _lastResolution)
{
_indices = GenerateGridIndexBuffer(sampleResolution, sampleResolution);
_indexBuffer = Buffer.Create(_tileTexture2D.Device, BindFlags.IndexBuffer, _indices);
_triangleCount = _indices.Length / 3;
}
_lastResolution = sampleResolution;
var vertexData = new VertexPositionColorNormal[sampleResolution * sampleResolution];
// sample data at vertices and create vertex buffer
int pos = 0;
for (int y = 0; y < sampleResolution; y++)
{
for (int x = 0; x < sampleResolution; x++)
{
float lat = x * (view.Width / sampleResolution) + view.Left;
float lon = y * (view.Height / sampleResolution) + view.Top;
float value = SampleData(lon, lat, zoomLevel);
// if (ValueMax - ValueMin)
float valueRatio = (value - ValueMin) / (ValueMax - ValueMin);
vertexData[pos++] = new VertexPositionColorNormal(
new Vector4((float)x / (sampleResolution - 1) * 256f, (float)y / (sampleResolution - 1) * 256f, 1, 1f),
new Vector4(valueRatio, valueRatio, valueRatio, 0),
Vector3.Zero);
}
}
CalculateNormals(ref vertexData, ref _indices);
_vertexBuffer = Buffer.Create(_tileTexture2D.Device, BindFlags.VertexBuffer, vertexData, structureByteStride: sizeof(VertexPositionColorNormal));
// SharpDX.Direct2D1.Mesh m = new Mesh(_renderTarget2D);
// _renderTarget2D.drawt
}
public void AddLine(Vector3 start, Vector3 end, Color startColor, Color endColor)
{
var startVert = new VertexPositionColorNormal(start, startColor, Vector3.Zero);
var endVert = new VertexPositionColorNormal(end, endColor, Vector3.Zero);
//int startIndex = Array.IndexOf(Vertices, startVert);
//int endIndex = Array.IndexOf(Vertices, endVert);
int startIndex = -1;
int endIndex = -1;
//If start vertex can't be recycled from an old one, make a new one.
if (startIndex == -1)
{
AddVertex(startVert);
startIndex = Vertices.Length - 1;
}
//If end vertex can't be recycled from an old one, make a new one.
if (endIndex == -1)
{
AddVertex(endVert);
endIndex = Vertices.Length - 1;
}
for (int i = 0; i < Indices.Length; i += 2)
{
int lineStart = Indices[i];
if ((i + 1) < Indices.Length)
{
int lineEnd = Indices[i + 1];
if (lineStart == startIndex && lineEnd == endIndex)
{
// Line literally already exists lmao
return;
}
}
}
AddIndex((short)startIndex);
AddIndex((short)endIndex);
}
public void AddTri(Vector3 a, Vector3 b, Vector3 c)
{
//var dir = Vector3.Cross(b - a, c - a);
//var norm = Vector3.Normalize(dir);
var vertA = new VertexPositionColorNormal(a, Color.White, Vector3.Zero);
var vertB = new VertexPositionColorNormal(b, Color.White, Vector3.Zero);
var vertC = new VertexPositionColorNormal(c, Color.White, Vector3.Zero);
int vertIndexA = Array.IndexOf(Vertices, vertA);
int vertIndexB = Array.IndexOf(Vertices, vertB);
int vertIndexC = Array.IndexOf(Vertices, vertC);
//If vertex A can't be recycled from an old one, make a new one.
if (vertIndexA == -1)
{
AddVertex(vertA);
vertIndexA = Vertices.Length - 1;
}
//If vertex B can't be recycled from an old one, make a new one.
if (vertIndexB == -1)
{
AddVertex(vertB);
vertIndexB = Vertices.Length - 1;
}
//If vertex C can't be recycled from an old one, make a new one.
if (vertIndexC == -1)
{
AddVertex(vertC);
vertIndexC = Vertices.Length - 1;
}
AddIndex((short)vertIndexA);
AddIndex((short)vertIndexB);
AddIndex((short)vertIndexC);
}
public static void GenerateNormals(ref VertexPositionColorNormal[] verts)
{
for (int i = 0; i < verts.Count() - 2; i += 3)
{
VertexPositionColorNormal vpcn1 = verts[i];
VertexPositionColorNormal vpcn2 = verts[i + 1];
VertexPositionColorNormal vpcn3 = verts[i + 2];
Vector3 v1 = vpcn2.Position - vpcn1.Position;
Vector3 v2 = vpcn3.Position - vpcn1.Position;
Vector3 normal = Vector3.Cross(v1, v2);
normal.Normalize();
vpcn1.Normal = normal;
vpcn2.Normal = normal;
vpcn3.Normal = normal;
verts[i] = vpcn1;
verts[i + 1] = vpcn2;
verts[i + 2] = vpcn3;
}
}
public void DrawTriangle(JVector pos1, JVector pos2, JVector pos3)
{
JVector n = JVector.Cross(pos2 - pos1, pos3 - pos1);
n.Normalize();
Vector3 xn = new Vector3(n.X, n.Y, n.Z);
VertexPositionColorNormal[] tri = new VertexPositionColorNormal[3] {
new VertexPositionColorNormal(new Vector3(pos1.X, pos1.Y, pos1.Z), Color.Green, xn),
new VertexPositionColorNormal(new Vector3(pos3.X, pos3.Y, pos3.Z), Color.Green, xn),
new VertexPositionColorNormal(new Vector3(pos2.X, pos2.Y, pos2.Z), Color.Green, xn),
};
effect.Parameters["World"].SetValue(Matrix.Identity);
effect.Parameters["ViewProj"].SetValue(Camera.CurrentCamera.View * Camera.CurrentCamera.Projection);
effect.CurrentTechnique = effect.Techniques["VBO"];
foreach (EffectPass p in effect.CurrentTechnique.Passes)
{
p.Apply();
device.DrawUserPrimitives(PrimitiveType.TriangleList, tri, 0, 1);
}
}
private VertexPositionColorNormal[] CreateTriangle()
{
var vertices = new VertexPositionColorNormal[6];
vertices[0].Position = new Vector3(-1f, -1f, 0f);
vertices[0].Color = Color.Blue;
vertices[0].Normal = new Vector3(1, 0, 1);
vertices[1].Position = new Vector3(0, 1f, 0f);
vertices[1].Color = Color.Green;
vertices[1].Normal = new Vector3(1, 0, 1);
vertices[2].Position = new Vector3(1f, -1f, 0f);
vertices[2].Color = Color.White;
vertices[2].Normal = new Vector3(1, 0, 1);
vertices[3].Position = new Vector3(1f, -1f, 0f);
vertices[3].Color = Color.White;
vertices[3].Normal = new Vector3(1, 0, 1);
vertices[4].Position = new Vector3(0, 1f, 0f);
vertices[4].Color = Color.Green;
vertices[4].Normal = new Vector3(1, 0, 1);
vertices[5].Position = new Vector3(-1f, -1f, 0f);
vertices[5].Color = Color.Blue;
vertices[5].Normal = new Vector3(1, 0, 1);
return vertices;
}
public override void Generate(int TerrainDepth, int TerrainWidth, int Spacing, GraphicsDevice gd)
{
var TempVertices = new VertexPositionColorNormal[TerrainDepth, TerrainWidth];
this.Spacing = Spacing;
Width = TerrainWidth;
Depth = TerrainDepth;
TotalWaterSizeX = TerrainWidth * Spacing;
TotalWaterSizeZ = TerrainDepth * Spacing;
tempVecs = new Vector3[Width * Depth];
for (int x = 0; x < TerrainDepth; x++)
{
for (int z = 0; z < TerrainWidth; z++)
{
VertexPositionColorNormal vpc = new VertexPositionColorNormal();
vpc.Position = new Vector3((x * Spacing) - (TotalWaterSizeX / 2f), -45, (z * Spacing) - (TotalWaterSizeZ / 2f));
vpc.Color = Utils.BlueishColours[Utils.RNG.Next(Utils.BlueishColours.Length - 1)];
if (x == 0 || z == 0 ||
x == TerrainWidth - 1 || z == TerrainDepth - 1)
{
vpc.Color.A = 0;
}
TempVertices[x, z] = vpc;
tempVecs[x + z * Width] = vpc.Position;
}
}
Indices = new uint[TerrainWidth, TerrainDepth][];
Vertices = Utils.getTrisAlternating(TempVertices, TerrainWidth, TerrainDepth, out Indices).ToArray();
Utils.GenerateNormals(ref Vertices);
VertexBuffer = new VertexBuffer(gd, VertexPositionColorNormal.VertexDeclaration, Vertices.Length, BufferUsage.WriteOnly);
VertexBuffer.SetData(Vertices);
}
public Skybox(GraphicsDevice device, TextureCube environment, Effect shader)
{
this.Environment = environment;
this.Shader = shader;
this.Device = device;
VertexPositionColorNormal[] vertices = new VertexPositionColorNormal[8] {
new VertexPositionColorNormal(new Vector3(-1, 1, 1), new Vector3(-1, 1, 1), Color.AliceBlue),
new VertexPositionColorNormal(new Vector3(1, 1, 1), new Vector3(-1, 1, 1), Color.AliceBlue),
new VertexPositionColorNormal(new Vector3(1, 1, -1), new Vector3(-1, 1, 1), Color.AliceBlue),
new VertexPositionColorNormal(new Vector3(-1, 1, -1), new Vector3(-1, 1, 1), Color.AliceBlue),
new VertexPositionColorNormal(new Vector3(-1, -1, 1), new Vector3(-1, 1, 1), Color.AliceBlue),
new VertexPositionColorNormal(new Vector3(1, -1, 1), new Vector3(-1, 1, 1), Color.AliceBlue),
new VertexPositionColorNormal(new Vector3(1, -1, -1), new Vector3(-1, 1, 1), Color.AliceBlue),
new VertexPositionColorNormal(new Vector3(-1, -1, -1), new Vector3(-1, 1, 1), Color.AliceBlue)
};
//vertices[1].Position = new Vector3(1, 1, 1);
//vertices[2].Position = new Vector3(1, 1, -1);
//vertices[3].Position = new Vector3(-1, 1, -1);
//vertices[4].Position = new Vector3(-1, -1, 1);
//vertices[5].Position = new Vector3(1, -1, 1);
//vertices[6].Position = new Vector3(1, -1, -1);
//vertices[7].Position = new Vector3(-1, -1, -1);
//vertices = null;
ushort[] indices = new ushort[36];
// top
indices[0] = 0; indices[1] = 1; indices[2] = 3;
indices[3] = 2; indices[4] = 3; indices[5] = 1;
//bottom
indices[6] = 5; indices[7] = 4; indices[8] = 6;
indices[9] = 7; indices[10] = 6; indices[11] = 4;
// front
indices[12] = 3; indices[13] = 2; indices[14] = 7;
indices[15] = 6; indices[16] = 7; indices[17] = 2;
// back
indices[18] = 1; indices[19] = 0; indices[20] = 4;
indices[21] = 4; indices[22] = 5; indices[23] = 1;
// left
indices[24] = 0; indices[25] = 3; indices[26] = 4;
indices[27] = 4; indices[28] = 3; indices[29] = 7;
// right
indices[30] = 2; indices[31] = 1; indices[32] = 6;
indices[33] = 5; indices[34] = 6; indices[35] = 1;
//this.IndexBuffer = new IndexBuffer(device, 36 * sizeof(ushort), BufferUsage.WriteOnly, IndexElementSize.SixteenBits);
this.VertexDeclaration = new VertexDeclaration(VertexPositionColorNormal.VertexDeclaration.GetVertexElements());
this.VertexBuffer = new VertexBuffer(device, typeof(VertexPositionColorNormal), vertices.Length, BufferUsage.WriteOnly);
this.IndexBuffer = new IndexBuffer(device, IndexElementSize.SixteenBits, 36 * sizeof(ushort), BufferUsage.WriteOnly);
this.VertexBuffer.SetData(vertices, 0, 8);
this.IndexBuffer.SetData(indices, 0, 36);
indices = null;
}
private Tuple<VertexPositionColorNormal[], int[]> getCylinder(CorePoint[] points, int steps, bool reverse)
{
VertexPositionColorNormal[] vertices = new VertexPositionColorNormal[points.Length * steps];
int[] indices = new int[2*steps+2];
for (int i = 0; i < points.Length; i++) {
CorePoint p = points[i];
for (int j = 0; j < steps; j++) {
Matrix fromAxisAngle = Matrix.CreateFromAxisAngle(p.orient, (float) ((reverse?-1:1)*j * Math.PI * 2 / steps));
vertices[i*steps + j].Position = Vector3.Transform(p.up, fromAxisAngle)*p.radius + p.pos;
vertices[i*steps + j].Normal = Vector3.TransformNormal(p.up, fromAxisAngle);
vertices[i*steps + j].Color = p.color;
}
}
for (int j = 0; j < steps; j++) {
indices[2*j] = j;
indices[2 * j + 1] = steps + j;
}
indices[2 * steps] = 0;
indices[2 * steps + 1] = steps;
return new Tuple<VertexPositionColorNormal[], int[]>(vertices, indices);
}
private int AddVertexToMesh(Vector3 point, Color color, Vector3 normal)
{
//Make it into a vertex
VertexPositionColorNormal v = new VertexPositionColorNormal(point, color, normal);
//Check if vertex already exists
//if (VertexList.Contains(v))
//return VertexList.IndexOf(v);
//else
{
VertexList.Add(v);
return VertexList.Count - 1;
}
}
public static Mesh Sphere(float radius, int m = 24, int n = 24)
{
// http://wiki.unity3d.com/index.php/ProceduralPrimitives
var r = radius;
var verts = new VertexPositionColorNormal[(m + 1) * (n + 2)];
verts[0] = new VertexPositionColorNormal {
Position = r * Vector3.Up
};
for (var i = 0; i < m; i++)
{
var a = (float)Math.PI * (float)(i + 1) / (m + 1);
var cosa = (float)Math.Cos(a);
var sina = (float)Math.Sin(a);
for (var j = 0; j <= n; j++)
{
var b = 2.0f * (float)Math.PI * (float)(j == n ? 0 : j) / n;
var cosb = (float)Math.Cos(b);
var sinb = (float)Math.Sin(b);
var pos = new Vector3(sina * cosb, cosa, sina * sinb) * r;
verts[j + i * (n + 1) + 1] = new VertexPositionColorNormal {
Position = pos,
};
}
}
verts[verts.Length - 1] = new VertexPositionColorNormal {
Position = r * Vector3.Down
};
for (var i = 0; i < verts.Length; i++)
{
var norm = verts[i].Position;
norm.Normalize();
verts[i].Normal = norm;
}
var numTris = 2 * verts.Length;
var numIndices = 3 * numTris;
var indices = new int[numIndices];
var idx = 0;
for (var j = 0; j < n; j++)
{
indices[idx++] = j + 1;
indices[idx++] = j + 2;
indices[idx++] = 0;
}
for (var i = 0; i < m - 1; i++)
{
for (var j = 0; j < n; j++)
{
var c = j + i * (n + 1) + 1;
var x = c + n + 1;
indices[idx++] = c;
indices[idx++] = x + 1;
indices[idx++] = c + 1;
indices[idx++] = c;
indices[idx++] = x;
indices[idx++] = x + 1;
}
}
for (var j = 0; j < n; j++)
{
indices[idx++] = verts.Length - 1;
indices[idx++] = verts.Length - (j + 2) - 1;
indices[idx++] = verts.Length - (j + 1) - 1;
}
return(new Mesh(verts, indices));
}
public void Initialize(Microsoft.Xna.Framework.Game game, Color color, IEnumerable<Vector3> vertices, IEnumerable<Triangle<uint>> triangles)
{
_game = game;
int vertCount = vertices.Count();
int triCount = triangles.Count();
_vertexBuffer = new VertexBuffer(game.GraphicsDevice, typeof(VertexPositionColorNormal), vertCount, BufferUsage.None);
_indexBuffer = new IndexBuffer(game.GraphicsDevice, typeof(int), triCount * 3, BufferUsage.None);
var data = new VertexPositionColorNormal[vertCount];
int c = 0;
foreach (var vert in vertices)
data[c++] = new VertexPositionColorNormal(new Vector3(vert.Y, vert.Z, vert.X), color, new Vector3(0));
var triData = new int[triCount*3];
c = 0;
foreach (var tri in triangles)
{
triData[c] = (int)tri.V0;
triData[c + 1] = (int) tri.V1;
triData[c + 2] = (int) tri.V2;
c += 3;
switch (tri.Type)
{
case TriangleType.Water:
data[tri.V0].Color = Color.Blue;
data[tri.V1].Color = Color.Blue;
data[tri.V2].Color = Color.Blue;
break;
}
}
GenerateNormals(data, triData);
_vertexBuffer.SetData(data);
_indexBuffer.SetData(triData);
}
private void GenerateVertices()
{
_vertices = new VertexPositionColorNormal[_terrainHeight * _terrainWidth];
for (int x = 0; x < _terrainWidth; x++)
{
for (int y = 0; y < _terrainHeight; y++)
{
_vertices[x + y * _terrainWidth].Position = new Vector3(x, _heightData[x, y], -y) * _scale;
_vertices[x + y * _terrainWidth].Normal = new Vector3(0, 0, 0);
if (!_isWater)
{
if (_heightData[x, y] > 3)
_vertices[x + y * _terrainWidth].Color = Color.LightGray;
else
_vertices[x + y * _terrainWidth].Color = Color.Green;
}
else
{
_vertices[x + y * _terrainWidth].Color = Color.DeepSkyBlue;
}
}
}
}
public static int ExtractMesh(World world, Layer layer, bool disableGreedyMeshing = false, bool disableAO = false)
{
/*
* Extract all faces
* - Store hidden faces (which should only be tops) in its own temporary list
* - Put all visible faces in to the vertex buffer
* - Mark the last primitive/index of visible faces and then insert hidden faces
* - When rendering above zLevel, only render up to the end of visible faces
* when rendering on the zlevel, render the entire buffer to show hidden faces
*/
layer.visibleMesh.Clear();
layer.hiddenMesh.Clear();
VertexPositionColorNormal[] vertices = new VertexPositionColorNormal[5];
var layerDepth = layer.Depth;
var lowerLayer = world[layerDepth - 1];
var upperLayer = world[layerDepth + 1];
var depth = world.Depth;
var size = world.Size;
var cells = layer.GetCells();
var dims = new int[] { world.Size, 1, world.Size };
var f = new Func<int, int, int, uint>((i, j, k) =>
{
var idx = i | k;
if (i < 0 || k < 0 || i >= size || k >= size)
return 0;
MapCell cell;
if (j < 0)
{
if (lowerLayer == null)
return 0;
cell = lowerLayer[i + k * size];
}
else if (j > 0)
{
if (upperLayer == null)
return 0;
cell = upperLayer[i + k * size];
}
else
cell = cells[i + k * size];
if (cell.Hidden)
return 0xff;
return cell.ToUInt();
});
//Sweep over 3-axes
// d0 = x, d1 = y, d2 = z
for (var d = 0; d < 3; ++d)
{
int i, j, k, l, w, h
, u = (d + 1) % 3
, v = (d + 2) % 3;
int[] x = { 0, 0, 0 };
int[] q = { 0, 0, 0 };
int[,] posArea = { { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } };
int[,] negArea = { { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } };
if (mask.Length < dims[u] * dims[v])
{
mask = new uint[dims[u] * dims[v] * 3 / 2];
maskLayout = new MaskLayout[dims[u] * dims[v] * 3 / 2];
}
q[d] = 1;
posArea[0, u] = -1;
posArea[1, v] = -1;
posArea[2, u] = 1;
posArea[3, v] = 1;
negArea[0, v] = -1;
negArea[1, u] = -1;
negArea[2, v] = 1;
negArea[3, u] = 1;
for (x[d] = -1; x[d] < dims[d]; )
{
//Compute mask
var n = 0;
for (x[v] = 0; x[v] < dims[v]; ++x[v])
{
for (x[u] = 0; x[u] < dims[u]; ++x[u], ++n)
{
var a = f(x[0], x[1], x[2]);
var b = f(x[0] + q[0], x[1] + q[1], x[2] + q[2]);
mask[n] = 0;
maskLayout[n].data = 0u;
if ((a != 0) == (b != 0))
{
if (d == 1)
{
mask[n] = a;
maskLayout[n].HiddenFace = true;
}
else
{
mask[n] = 0;
}
}
else if (a != 0)
{
mask[n] = x[d] > -1 ? a : 0;
maskLayout[n].BackFace = false;
}
else
{
if (d == 1)
{
mask[n] = 0;
}
else
{
mask[n] = x[d] < dims[d] - 1 ? b : 0;
maskLayout[n].BackFace = true;
}
}
if (disableAO || mask[n] == 0 || maskLayout[n].HiddenFace)
{
//maskLayout[n].data = 4095u;
}
else
{
uint side1 = 0, side2 = 0, corner = 0;
var neighbors = new uint[4];
for (var t = 0; t < 4; ++t)
{
var tt = (t + 1) % 4;
if (a != 0)
{
side1 = (f(x[0] + q[0] + posArea[t, 0], x[1] + q[1] + posArea[t, 1], x[2] + q[2] + posArea[t, 2]) > 0u ? 1u : 0u);
side2 = (f(x[0] + q[0] + posArea[tt, 0], x[1] + q[1] + posArea[tt, 1], x[2] + q[2] + posArea[tt, 2]) > 0u ? 1u : 0u);
}
else
{
side1 = (f(x[0] + negArea[t, 0], x[1] + negArea[t, 1], x[2] + negArea[t, 2]) > 0u ? 1u : 0u);
side2 = (f(x[0] + negArea[tt, 0], x[1] + negArea[tt, 1], x[2] + negArea[tt, 2]) > 0u ? 1u : 0u);
}
if (side1 > 0 && side2 > 0)
{
neighbors[t] = 0;
}
else
{
if (a != 0)
{
corner = (f(x[0] + q[0] + posArea[t, 0] + posArea[tt, 0], x[1] + q[1] + posArea[t, 1] + posArea[tt, 1], x[2] + q[2] + posArea[t, 2] + posArea[tt, 2]) > 0u ? 1u : 0u);
}
else
{
corner = (f(x[0] + negArea[t, 0] + negArea[tt, 0], x[1] + negArea[t, 1] + negArea[tt, 1], x[2] + negArea[t, 2] + negArea[tt, 2]) > 0u ? 1u : 0u);
}
neighbors[t] = 3u - (side1 + side2 + corner);
}
maskLayout[n].SetOcclusion(t, neighbors[t]);
}
uint a00 = neighbors[1],
a01 = neighbors[2],
a11 = neighbors[3],
a10 = neighbors[0];
if (a00 + a01 + a11 + a10 != 12)
maskLayout[n].AOFace = true;
}
}
}
//Increment x[d]
++x[d];
//Generate mesh for mask using lexicographic ordering
n = 0;
for (j = 0; j < dims[v]; ++j)
{
for (i = 0; i < dims[u]; )
{
var c = mask[n];
if (c != 0)
{
var a = maskLayout[n];
if (disableGreedyMeshing || a.AOFace)
{
w = 1;
h = 1;
}
else
{
//Compute width
for (w = 1; c == mask[n + w] && (a.data == (maskLayout[n + w].data)) && i + w < dims[u]; ++w)
{
}
//Compute height (this is slightly awkward
var done = false;
for (h = 1; j + h < dims[v]; ++h)
{
for (k = 0; k < w; ++k)
{
if (c != mask[n + k + h * dims[u]] || a.data != maskLayout[n + k + h * dims[u]].data)
{
done = true;
break;
}
}
if (done)
{
break;
}
}
}
//Add quad
x[u] = i; x[v] = j;
int[] du = { 0, 0, 0 };
int[] dv = { 0, 0, 0 };
var normal = new Vector3(q[0], q[1], q[2]);
var aoFace = maskLayout[n].AOFace;
if (!maskLayout[n].BackFace)
{
dv[v] = h;
du[u] = w;
}
else
{
du[v] = h;
dv[u] = w;
normal = -normal;
}
var typeid = c & 0xff;
var meta = MapCellDescriptor.MapCells[typeid];
var cr = meta.Color.R / 255f;
var cg = meta.Color.G / 255f;
var cb = meta.Color.B / 255f;
var ao = 0f;
var AOcurve = new float[] { 0.45f, 0.65f, 0.85f, 1.0f };
var auCurveFactor = new float[] { 1f, 0.99f, 0.98f, 0.97f, 0.96f };
var aoFactor = auCurveFactor[maskLayout[n].TotalOcclusion()];
for (var o = 0; o < 4; ++o)
{
var pao = disableAO ? 1f : AOcurve[maskLayout[n].GetOcclusion(o)];
//vertices[o].Color = new Color(cr * pao, cg * pao, cb * pao);
vertices[o].Color = new Color(cr * pao, cg * pao, cb * pao);
vertices[o].Normal = normal;
ao += pao;
}
ao /= 4f;
vertices[0].Position = new Vector3(x[0], x[1], x[2]);
vertices[1].Position = new Vector3(x[0] + du[0], x[1] + du[1], x[2] + du[2]);
vertices[2].Position = new Vector3(x[0] + du[0] + dv[0], x[1] + du[1] + dv[1], x[2] + du[2] + dv[2]);
vertices[3].Position = new Vector3(x[0] + dv[0], x[1] + dv[1], x[2] + dv[2]);
//vertices[0].Position += new Vector3(0.25f, 0.25f, 0.25f);
//vertices[1].Position += new Vector3(0.25f, 0.25f, 0.25f);
//vertices[2].Position += new Vector3(0.25f, 0.25f, 0.25f);
//vertices[3].Position += new Vector3(0.25f, 0.25f, 0.25f);
var mesh = a.HiddenFace ? layer.hiddenMesh : layer.visibleMesh;
var v0 = mesh.Add(vertices[0]);
var v1 = mesh.Add(vertices[1]);
var v2 = mesh.Add(vertices[2]);
var v3 = mesh.Add(vertices[3]);
if (aoFace)
{
vertices[4].Position = (vertices[0].Position + vertices[1].Position + vertices[2].Position + vertices[3].Position) / 4;
vertices[4].Normal = normal;
vertices[4].Color = new Color(cr * ao, cg * ao, cb * ao);
var v4 = mesh.Add(vertices[4]);
mesh.Triangle(v0, v4, v1);
mesh.Triangle(v1, v4, v2);
mesh.Triangle(v2, v4, v3);
mesh.Triangle(v3, v4, v0);
}
else
{
mesh.Quad(v0, v1, v2, v3);
}
//Zero-out mask
for (l = 0; l < h; ++l)
{
for (k = 0; k < w; ++k)
{
mask[n + k + l * dims[u]] = 0;
maskLayout[n + k + l * dims[u]].data = 0;
}
}
//Increment counters and continue
i += w; n += w;
}
else
{
++i; ++n;
}
}
}
}
}
layer.visibleMesh.Update();
layer.hiddenMesh.Update();
return layer.visibleMesh.VertexCount + layer.hiddenMesh.VertexCount;
}
public void BuildMesh()
{
SurfaceExtractor.ExtractMesh(this.world, this);
return;
/*
* Extract all faces
* - Store hidden faces (which should only be tops) in its own temporary list
* - Put all visible faces in to the vertex buffer
* - Mark the last primitive/index of visible faces and then insert hidden faces
* - When rendering above zLevel, only render up to the end of visible faces
* when rendering on the zlevel, render the entire buffer to show hidden faces
*/
visibleMesh.Clear();
VertexPositionColorNormal[] vertices = new VertexPositionColorNormal[4];
var dims = new int[] { world.Size, 1, world.Size };
var f = new Func<int, int, int, MapCell>((x, y, z) =>
{
if (x < 0 || y < 0 || z < 0 || x >= dims[0] || y >= dims[1] || z >= dims[2])
return world[x, z, y];
return mapCells[x + z * world.Size];
});
//Sweep over 3-axes
// d0 = x, d1 = y, d2 = z
for (var d = 0; d < 3; ++d)
{
int i, j, k, l, w, h
, u = (d + 1) % 3
, v = (d + 2) % 3;
int[] x = { 0, 0, 0 };
int[] q = { 0, 0, 0 };
q[d] = 1;
for (x[d] = -1; x[d] < dims[d]; )
{
//Compute mask
int[] du = { 0, 0, 0 };
int[] dv = { 0, 0, 0 };
for (x[v] = 0; x[v] < dims[v]; ++x[v])
{
for (x[u] = 0; x[u] < dims[u]; ++x[u])
{
var a = f(x[0], x[1], x[2]);
var b = f(x[0] + q[0], x[1] + q[1], x[2] + q[2]);
if ((!a.Meta.IsEmpty) == (!b.Meta.IsEmpty))
{
continue;
}
//x[u] = i; x[v] = j;
var normal = new Vector3(q[0], q[1], q[2]);
MapCellDescriptor meta;
if (!a.Meta.IsEmpty)
{
//normal quad
du[v] = 1;
dv[u] = 1;
meta = a.Meta;
vertices[0].Position = new Vector3(x[0], x[1], x[2]);
vertices[1].Position = new Vector3(x[0] + du[0], x[1] + du[1], x[2] + du[2]);
vertices[2].Position = new Vector3(x[0] + du[0] + dv[0], x[1] + du[1] + dv[1], x[2] + du[2] + dv[2]);
vertices[3].Position = new Vector3(x[0] + dv[0], x[1] + dv[1], x[2] + dv[2]);
}
else
{
//continue;
//backface quad
dv[v] = 1;
du[u] = 1;
normal = -normal;
meta = b.Meta;
vertices[0].Position = new Vector3(x[0] + q[0], x[1] + q[1], x[2] + q[2]);
vertices[1].Position = new Vector3(x[0] + q[0] + du[0], x[1] + q[1] + du[1], x[2] + q[2] + du[2]);
vertices[2].Position = new Vector3(x[0] + q[0] + du[0] + dv[0], x[1] + q[1] + du[1] + dv[1], x[2] + q[2] + du[2] + dv[2]);
vertices[3].Position = new Vector3(x[0] + q[0] + dv[0], x[1] + q[1] + dv[1], x[2] + q[2] + dv[2]);
}
for (var p = 0; p < 4; ++p)
{
vertices[p].Color = meta.Color;
vertices[p].Normal = normal;
}
var v0 = visibleMesh.Add(vertices[0]);
var v1 = visibleMesh.Add(vertices[1]);
var v2 = visibleMesh.Add(vertices[2]);
var v3 = visibleMesh.Add(vertices[3]);
visibleMesh.Quad(v0, v1, v2, v3);
}
}
//Increment x[d]
++x[d];
}
}
visibleMesh.Update();
}
public void CalculateIndexes(float threshold)
{
if (!FlatShading)
{
Indices.Clear();
}
else
{
Indices = new List <int>();
}
List <int> tri_count = new List <int>();
tree.ProcessCell(Indices, tri_count, threshold);
if (!FlatShading)
{
IndexCount = Indices.Count;
if (Indices.Count == 0)
{
return;
}
}
if (!FlatShading)
{
IndexBuffer.SetData <int>(Indices.ToArray());
}
else
{
List <VertexPositionColorNormal> new_vertices = new List <VertexPositionColorNormal>();
int t_index = 0;
for (int i = 0; i < Indices.Count; i += 3)
{
int count = tri_count[t_index++];
Vector3 n = Vector3.Zero;
if (count == 1)
{
n = GetNormalQ(Vertices, Indices[i + 2], Indices[i + 0], Indices[i + 1]);
}
else
{
n = GetNormalQ(Vertices, Indices[i + 2], Indices[i + 0], Indices[i + 1], Indices[i + 5], Indices[i + 3], Indices[i + 4]);
}
Vector3 nc = n * 0.5f + Vector3.One * 0.5f;
nc.Normalize();
Color c = new Color(nc);
VertexPositionColorNormal v0 = new VertexPositionColorNormal(Vertices[Indices[i + 0]].Position, c, n);
VertexPositionColorNormal v1 = new VertexPositionColorNormal(Vertices[Indices[i + 1]].Position, c, n);
VertexPositionColorNormal v2 = new VertexPositionColorNormal(Vertices[Indices[i + 2]].Position, c, n);
new_vertices.Add(v0);
new_vertices.Add(v1);
new_vertices.Add(v2);
if (count > 1)
{
VertexPositionColorNormal v3 = new VertexPositionColorNormal(Vertices[Indices[i + 3]].Position, c, n);
VertexPositionColorNormal v4 = new VertexPositionColorNormal(Vertices[Indices[i + 4]].Position, c, n);
VertexPositionColorNormal v5 = new VertexPositionColorNormal(Vertices[Indices[i + 5]].Position, c, n);
new_vertices.Add(v3);
new_vertices.Add(v4);
new_vertices.Add(v5);
i += 3;
}
}
if (new_vertices.Count > 0)
{
VertexBuffer.SetData <VertexPositionColorNormal>(new_vertices.ToArray());
}
VertexCount = new_vertices.Count;
}
}
internal void ComputeVerticesIndices(PAL Palette)
{
if (ComputedVertices == null)
{
ComputedVertices = new List <VertexPositionColorNormal>();
ComputedIndices = new List <int>();
var Normals = GetNormals();
var shifts = new Vector3[] {
new Vector3(-1, -1, -1),
new Vector3(-1, +1, -1),
new Vector3(-1, -1, +1),
new Vector3(-1, +1, +1),
new Vector3(+1, -1, -1),
new Vector3(+1, +1, -1),
new Vector3(+1, -1, +1),
new Vector3(+1, +1, +1),
};
foreach (var sp in Body.Spans)
{
foreach (var v in sp.Voxels)
{
var Clr = Palette.Colors[v.ColorIndex];
var N = Normals[v.NormalIndex];
var obs = Body.ObscuredFrom(v.X, v.Y, v.Z);
if (obs == Edges.All)
{
continue;
}
var realPos = Tail.Displacement(v.X, v.Y, v.Z);
var start = ComputedVertices.Count;
foreach (var sh in shifts)
{
var vpcn = new VertexPositionColorNormal();
var scaledShift = sh * Tail.Scale;
var pos = realPos + scaledShift;
vpcn.Position = pos;
vpcn.Color = Clr;
vpcn.Normal = N;
ComputedVertices.Add(vpcn);
}
if (!obs.HasFlag(Edges.XLess))
{
// 0123
ComputedIndices.Add(start + 0);
ComputedIndices.Add(start + 1);
ComputedIndices.Add(start + 2);
ComputedIndices.Add(start + 1);
ComputedIndices.Add(start + 2);
ComputedIndices.Add(start + 3);
}
if (!obs.HasFlag(Edges.YLess))
{
// 0246
ComputedIndices.Add(start + 0);
ComputedIndices.Add(start + 2);
ComputedIndices.Add(start + 4);
ComputedIndices.Add(start + 2);
ComputedIndices.Add(start + 4);
ComputedIndices.Add(start + 6);
}
if (!obs.HasFlag(Edges.ZLess))
{
// 0145
ComputedIndices.Add(start + 0);
ComputedIndices.Add(start + 1);
ComputedIndices.Add(start + 4);
ComputedIndices.Add(start + 1);
ComputedIndices.Add(start + 4);
ComputedIndices.Add(start + 5);
}
if (!obs.HasFlag(Edges.ZMore))
{
// 2367
ComputedIndices.Add(start + 2);
ComputedIndices.Add(start + 3);
ComputedIndices.Add(start + 6);
ComputedIndices.Add(start + 3);
ComputedIndices.Add(start + 6);
ComputedIndices.Add(start + 7);
}
if (!obs.HasFlag(Edges.YMore))
{
// 1357
ComputedIndices.Add(start + 1);
ComputedIndices.Add(start + 3);
ComputedIndices.Add(start + 5);
ComputedIndices.Add(start + 3);
ComputedIndices.Add(start + 5);
ComputedIndices.Add(start + 7);
}
if (!obs.HasFlag(Edges.XMore))
{
// 4567
ComputedIndices.Add(start + 4);
ComputedIndices.Add(start + 5);
ComputedIndices.Add(start + 6);
ComputedIndices.Add(start + 5);
ComputedIndices.Add(start + 6);
ComputedIndices.Add(start + 7);
}
}
}
}
}
private void Polygonize(int x, int y, int z)
{
if (Cells[x, y, z] == null)
{
return;
}
int cube_index = 0;
for (int i = 0; i < 8; i++)
{
if (Sampler.Sample(new Vector3(x, y, z) + CornerDeltas[i]) < 0)
{
cube_index |= 1 << i;
}
}
if (cube_index == 0 || cube_index == 255)
{
return;
}
Cells[x, y, z].Vertices = new Vertex[VerticesNumberTable[cube_index]];
/*for (int i = 0; i < 12; i++)
* {
* Cells[x, y, z].Edges[i].A = new Vector3(x, y, z) + CornerDeltas[EdgePairs[i, 0]];
* Cells[x, y, z].Edges[i].B = new Vector3(x, y, z) + CornerDeltas[EdgePairs[i, 1]];
*
* Cells[x, y, z].Edges[i].ValueA = Sampler.Sample(Cells[x, y, z].Edges[i].A);
* Cells[x, y, z].Edges[i].ValueB = Sampler.Sample(Cells[x, y, z].Edges[i].B);
* }*/
int v_index = 0;
Cells[x, y, z].Vertices[0] = new Vertex();
for (int e = 0; e < EdgesTable.GetLength(1); e++)
{
if (EdgesTable[cube_index, e] == -2)
{
break;
}
if (EdgesTable[cube_index, e] == -1)
{
v_index++;
if (v_index < Cells[x, y, z].Vertices.Length)
{
Cells[x, y, z].Vertices[v_index] = new Vertex();
}
continue;
}
//Cells[x, y, z].Vertices[v_index].Index = v_index;
Cells[x, y, z].Vertices[v_index].Edges.Add(EdgesTable[cube_index, e]);
Cells[x, y, z].Edges[EdgesTable[cube_index, e]].Vertices.Add(Cells[x, y, z].Vertices[v_index]);
//Cells[x, y, z].Edges[EdgesTable[cube_index, e]].Flipped = Cells[x, y, z].Edges[EdgesTable[cube_index, e]].ValueA < 0;
}
foreach (Vertex v in Cells[x, y, z].Vertices)
{
Vertex tx = v;
if (v == null) //for edges 241/243, which were originally marked as having 2 vertices...?
{
continue;
}
Vector3 point = new Vector3();
if (VertexMode != VertexModes.Block)
{
//QEF3D qef = new QEF3D();
QEFProper.QEFSolver qef = new QEFProper.QEFSolver();
VertexPlacement qem = new VertexPlacement();
for (int e_i = 0; e_i < tx.Edges.Count; e_i++)
{
Edge e = Cells[x, y, z].Edges[tx.Edges[e_i]];
if (VertexMode == VertexModes.Edges)
{
point += e.GetIntersection();
}
else if (VertexMode == VertexModes.QEF)
{
qef.Add(e.GetIntersection() - new Vector3(x, y, z), Sampler.GetNormal(e.GetIntersection()));
}
else
{
qem.AddPlane(e.GetIntersection() - new Vector3(x, y, z), Sampler.GetNormal(e.GetIntersection()));
}
}
if (VertexMode == VertexModes.Edges)
{
point /= (float)tx.Edges.Count;
}
else if (VertexMode == VertexModes.QEF)
{
point = qef.Solve(1e-6f, 4, 1e-6f) + new Vector3(x, y, z);
}
else
{
point = qem.Solve() + new Vector3(x, y, z);
}
}
else
{
point = new Vector3(x, y, z) + Vector3.One * 0.5f;
}
//point = Vector3.Clamp(point, new Vector3(x, y, z), new Vector3(x + 1, y + 1, z + 1));
tx.Position = point;
Vector3 norm = Sampler.GetNormal(point);
Vector3 c_v = norm * 0.5f + Vector3.One * 0.5f;
c_v.Normalize();
Color clr = new Color(c_v);
if (!UseFlatShading)
{
tx.Index = Vertices.Count;
VertexPositionColorNormal pv = new VertexPositionColorNormal(tx.Position, clr, norm);
Vertices.Add(pv);
}
else
{
tx.Index = CalculatedVertices.Count;
VertexPositionColor pv = new VertexPositionColor(tx.Position, clr);
CalculatedVertices.Add(pv);
}
VertexPositionColor[] vs = new VertexPositionColor[24];
Color c = Color.Red;
float vx = tx.Position.X;
float vy = tx.Position.Y;
float vz = tx.Position.Z;
float r = 0.25f;
vs[0] = new VertexPositionColor(new Vector3((vx + 0), (vy + 0), (vz + 0)), c);
vs[1] = new VertexPositionColor(new Vector3((vx + r), (vy + 0), (vz + 0)), c);
vs[2] = new VertexPositionColor(new Vector3((vx + r), (vy + 0), (vz + 0)), c);
vs[3] = new VertexPositionColor(new Vector3((vx + r), (vy + r), (vz + 0)), c);
vs[4] = new VertexPositionColor(new Vector3((vx + r), (vy + r), (vz + 0)), c);
vs[5] = new VertexPositionColor(new Vector3((vx + 0), (vy + r), (vz + 0)), c);
vs[6] = new VertexPositionColor(new Vector3((vx + 0), (vy + r), (vz + 0)), c);
vs[7] = new VertexPositionColor(new Vector3((vx + 0), (vy + 0), (vz + 0)), c);
vs[8] = new VertexPositionColor(new Vector3((vx + 0), (vy + 0), (vz + r)), c);
vs[9] = new VertexPositionColor(new Vector3((vx + r), (vy + 0), (vz + r)), c);
vs[10] = new VertexPositionColor(new Vector3((vx + r), (vy + 0), (vz + r)), c);
vs[11] = new VertexPositionColor(new Vector3((vx + r), (vy + r), (vz + r)), c);
vs[12] = new VertexPositionColor(new Vector3((vx + r), (vy + r), (vz + r)), c);
vs[13] = new VertexPositionColor(new Vector3((vx + 0), (vy + r), (vz + r)), c);
vs[14] = new VertexPositionColor(new Vector3((vx + 0), (vy + r), (vz + r)), c);
vs[15] = new VertexPositionColor(new Vector3((vx + 0), (vy + 0), (vz + r)), c);
vs[16] = new VertexPositionColor(new Vector3((vx + 0), (vy + 0), (vz + 0)), c);
vs[17] = new VertexPositionColor(new Vector3((vx + 0), (vy + 0), (vz + r)), c);
vs[18] = new VertexPositionColor(new Vector3((vx + 0), (vy + r), (vz + 0)), c);
vs[19] = new VertexPositionColor(new Vector3((vx + 0), (vy + r), (vz + r)), c);
vs[20] = new VertexPositionColor(new Vector3((vx + r), (vy + 0), (vz + 0)), c);
vs[21] = new VertexPositionColor(new Vector3((vx + r), (vy + 0), (vz + r)), c);
vs[22] = new VertexPositionColor(new Vector3((vx + r), (vy + r), (vz + 0)), c);
vs[23] = new VertexPositionColor(new Vector3((vx + r), (vy + r), (vz + r)), c);
OutlineBuffer.SetData <VertexPositionColor>(OutlineLocation * VertexPositionColor.VertexDeclaration.VertexStride, vs, 0, 24, VertexPositionColor.VertexDeclaration.VertexStride);
OutlineLocation += 24;
}
}
public static IEnumerable <VertexPositionColorNormal> getTrisAlternating(VertexPositionColorNormal[] Data, int Depth, int Width, out uint[, ][] Indices)
{
VertexPositionColorNormal[,] source = new VertexPositionColorNormal[Width, Depth]; //The new, easy to read 2D array
for (int x = 0; x < Width; x++) //Convert!
{
for (int y = 0; y < Depth; y++)
{
source[x, y] = Data[x + y * Width];
}
}
List <uint>[,] Indexes = new List <uint> [Width, Depth];
for (int i = 0; i != Width; i++)
{
for (int j = 0; j != Width; j++)
{
Indexes[i, j] = new List <uint>();
}
}
var result = new List <VertexPositionColorNormal>();
for (int x = 0; x < Width - 1; x++)
{
for (int y = 0; y < Depth - 1; y++)
{
if ((y + x % 2) % 2 == 0)
{
var a = source[x, y];
var b = source[x + 1, y];
var c = source[x + 1, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
Indexes[x, y].Add((uint)((x + y * Width) * 6));
Indexes[x + 1, y].Add((uint)((x + y * Width) * 6) + 1);
Indexes[x + 1, y + 1].Add((uint)((x + y * Width) * 6) + 2);
}
b = source[x + 1, y + 1];
c = source[x, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
Indexes[x, y].Add((uint)((x + y * Width) * 6) + 3);
Indexes[x + 1, y + 1].Add((uint)((x + y * Width) * 6) + 4);
Indexes[x, y + 1].Add((uint)((x + y * Width) * 6) + 5);
}
}
else
{
var a = source[x, y];
var b = source[x + 1, y];
var c = source[x, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
Indexes[x, y].Add((uint)((x + y * Width) * 6));
Indexes[x + 1, y].Add((uint)((x + y * Width) * 6) + 1);
Indexes[x, y + 1].Add((uint)((x + y * Width) * 6) + 2);
}
a = source[x + 1, y];
b = source[x + 1, y + 1];
c = source[x, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
Indexes[x + 1, y].Add((uint)((x + y * Width) * 6) + 3);
Indexes[x + 1, y + 1].Add((uint)((x + y * Width) * 6) + 4);
Indexes[x, y + 1].Add((uint)((x + y * Width) * 6) + 5);
}
}
}
}
Indices = new uint[Width, Depth][];
for (int i = 0; i != Width; i++)
{
for (int j = 0; j != Width; j++)
{
Indices[i, j] = Indexes[i, j].ToArray();
}
}
return(result);
}
void generate(object ctx)
{
building = true;
List<int> inds = new List<int>(Icosphere.Indicies);
List<VertexPositionColorNormal> verts = new List<VertexPositionColorNormal>();
for (int i = 0; i < Icosphere.Verticies.Length; i++) {
verts.Add(new VertexPositionColorNormal(Icosphere.Verticies[i] / Icosphere.Verticies[i].Length(), Icosphere.Verticies[i], landColor));
}
IndexBuffer = new Dictionary<int, int[]>();
IndexBuffer[0] = inds.ToArray();
LODv = new List<int>();
LODv.Add(verts.Count);
int levels = (int)ctx;
for (int l = 1; l < levels; l++) {
List<int> newinds = new List<int>();
for (int i = 0; i < inds.Count; i+=3) {
int i1 = inds[i], i2 = inds[i + 1], i3 = inds[i + 2];
Vector3 v1 = verts[i1].Position, v2 = verts[i2].Position, v3 = verts[i3].Position;
Vector3 v4 = (v1 + v3) / 2f;
Vector3 v5 = (v1 + v2) / 2f;
Vector3 v6 = (v3 + v2) / 2f;
v4.Normalize(); v5.Normalize(); v6.Normalize();
verts.Add(new VertexPositionColorNormal(v4, v4, landColor));
verts.Add(new VertexPositionColorNormal(v5, v5, landColor));
verts.Add(new VertexPositionColorNormal(v6, v6, landColor));
int i4 = verts.Count - 3;
int i5 = verts.Count - 2;
int i6 = verts.Count - 1;
newinds.AddRange(new int[] { i1, i5, i4 });
newinds.AddRange(new int[] { i4, i5, i6 });
newinds.AddRange(new int[] { i3, i4, i6 });
newinds.AddRange(new int[] { i6, i5, i2 });
}
inds = new List<int>(newinds);
IndexBuffer[l] = inds.ToArray();
LODv.Add(verts.Count);
}
VertexBuffer = verts.ToArray();
if (HasWater)
WaterVertexBuffer = new VertexPositionColorPolar[VertexBuffer.Length];
if (HasAtmosphere)
AtmosphereVertexBuffer = new VertexPositionColorNormal[VertexBuffer.Length];
// set terrain heights
for (int i = 0; i < VertexBuffer.Length; i++) {
// water verts
if (HasWater){
WaterVertexBuffer[i] = new VertexPositionColorPolar(VertexBuffer[i].Position, Vector2.Zero, waterColor);
WaterVertexBuffer[i].Polar.X = (float)Math.Asin(WaterVertexBuffer[i].Position.Z);
WaterVertexBuffer[i].Polar.Y = (float)Math.Atan2(WaterVertexBuffer[i].Position.Y, WaterVertexBuffer[i].Position.X);
WaterVertexBuffer[i].Position *= Radius;
}
// atmo verts
if (HasAtmosphere) {
AtmosphereVertexBuffer[i] = new VertexPositionColorNormal(VertexBuffer[i].Position, VertexBuffer[i].Position, atmosphereColor);
AtmosphereVertexBuffer[i].Normal.Normalize();
AtmosphereVertexBuffer[i].Position *= AtmosphereHeight;
}
// land verts
VertexBuffer[i].Color = landColor;
float h = getHeight(VertexBuffer[i].Position);
if (h <= Radius)
VertexBuffer[i].Color = oceanFloorColor;
VertexBuffer[i].Position *= h;
VertexBuffer[i].Normal = Vector3.Zero;
}
for (int i = 0; i < IndexBuffer[levels - 1].Length; i+=3) {
int i1 = IndexBuffer[levels - 1][i];
int i2 = IndexBuffer[levels - 1][i + 1];
int i3 = IndexBuffer[levels - 1][i + 2];
Vector3 norm = -Vector3.Cross(VertexBuffer[i1].Position - VertexBuffer[i2].Position, VertexBuffer[i1].Position - VertexBuffer[i3].Position);
VertexBuffer[i1].Normal += norm;
VertexBuffer[i2].Normal += norm;
VertexBuffer[i3].Normal += norm;
}
for (int i = 0; i < VertexBuffer.Length; i++)
VertexBuffer[i].Normal.Normalize();
if (HasWater){
waves[0] = new Wave(.5f, 2, Vector2.UnitX, 50, 1f);
waves[1] = new Wave(.2f, 2, Vector2.UnitY, 50, .2f);
}
built = true;
building = false;
}
private Tuple<VertexPositionColorNormal[], int[]> getCylinderCap(CorePoint point, int steps, bool reverse, bool backwards)
{
VertexPositionColorNormal[] vertices = new VertexPositionColorNormal[steps * steps];
int[] indices = new int[2 * steps + 2];
for (int i = 0; i < steps; i++)
{
for (int j = 0; j < steps; j++) {
float t = (float) j/(steps - 1);
Vector3 newp = point.pos - point.radius* point.orient*(backwards ? 1 : -1)*t;
float newr = point.radius*(float)Math.Sqrt(1-(1-t)*(1-t));
Vector3 newn = newr*point.up + newp - point.pos;
newn.Normalize();
Matrix rotationMatrix = Matrix.CreateFromAxisAngle(point.orient, (float)((reverse ? -1 : 1) * j * Math.PI * 2 / steps));
vertices[i * steps + j].Position = Vector3.Transform(point.up, rotationMatrix) * newr + newp;
vertices[i * steps + j].Normal = Vector3.TransformNormal(newn, rotationMatrix);
vertices[i * steps + j].Color = point.color;
}
}
for (int j = 0; j < steps; j++)
{
indices[2 * j] = j;
indices[2 * j + 1] = steps + j;
}
indices[2 * steps] = 0;
indices[2 * steps + 1] = steps;
return new Tuple<VertexPositionColorNormal[], int[]>(vertices, indices);
}
public void Polygonize(List <VertexPositionColorNormal> vertices, int size)
{
int bitmask = 0;
for (int i = 0; i < 4; i++)
{
if (Sampler.Sample(Positions[i]) < 0)
{
bitmask |= Bitmasks[i];
}
}
if (bitmask == 0 || bitmask == 15)
{
return;
}
List <Vector2> vs = new List <Vector2>();
switch (bitmask)
{
case 0x0:
break;
case 0x1:
vs.Add(GetPosition(0, 1));
vs.Add(GetPosition(2, 0));
break;
case 0x2:
vs.Add(GetPosition(3, 2));
vs.Add(GetPosition(2, 0));
break;
case 0x3:
vs.Add(GetPosition(3, 2));
vs.Add(GetPosition(0, 1));
break;
//Counterclockwise lines stop here because I grew lazy...
case 0x4:
vs.Add(GetPosition(3, 2));
vs.Add(GetPosition(1, 3));
break;
case 0x5:
vs.Add(GetPosition(0, 2));
vs.Add(GetPosition(3, 2));
vs.Add(GetPosition(0, 1));
vs.Add(GetPosition(1, 3));
break;
case 0x6:
vs.Add(GetPosition(0, 2));
vs.Add(GetPosition(1, 3));
break;
case 0x7:
vs.Add(GetPosition(0, 1));
vs.Add(GetPosition(1, 3));
break;
case 0x8:
vs.Add(GetPosition(0, 1));
vs.Add(GetPosition(1, 3));
break;
case 0x9:
vs.Add(GetPosition(0, 2));
vs.Add(GetPosition(1, 3));
break;
case 0xA:
vs.Add(GetPosition(0, 2));
vs.Add(GetPosition(0, 1));
vs.Add(GetPosition(3, 2));
vs.Add(GetPosition(1, 3));
break;
case 0xB:
vs.Add(GetPosition(3, 2));
vs.Add(GetPosition(1, 3));
break;
case 0xC:
vs.Add(GetPosition(0, 1));
vs.Add(GetPosition(3, 2));
break;
case 0xD:
vs.Add(GetPosition(0, 2));
vs.Add(GetPosition(3, 2));
break;
case 0xE:
vs.Add(GetPosition(0, 1));
vs.Add(GetPosition(2, 0));
break;
case 0xF:
break;
}
for (int i = 0; i < vs.Count; i += 2)
{
VertexPositionColorNormal v0 = new VertexPositionColorNormal(new Vector3(vs[i], 0) * size, Color.Blue, Vector3.One);
VertexPositionColorNormal v1 = new VertexPositionColorNormal(new Vector3(vs[i + 1], 0) * size, Color.Blue, Vector3.One);
vertices.Add(v0);
vertices.Add(v1);
}
}
public static int ExtractMesh(VoxelVolume volume, bool disableGreedyMeshing = false, bool disableAO = false)
{
volume.PrepareMesh();
VertexPositionColorNormal[] vertices = new VertexPositionColorNormal[5];
var dims = volume.dims;
var f = new Func<int, int, int, uint>((i, j, k) =>
{
if (i < 0 || j < 0 || k < 0 || i >= dims[0] || j >= dims[1] || k >= dims[2])
return volume.GetRelativeVoxel(i, j, k);
//return cm.GetVoxelByRelative(volume.X, volume.Y, volume.Z, i, j, k);
var r = volume[i + dims[0] * (j + dims[1] * k)];
if (r > 0 && (r & 0x1000000u) > 0u)
{
r = 0;
}
return r;
});
//Sweep over 3-axes
// d0 = x, d1 = y, d2 = z
for (var d = 0; d < 3; ++d)
{
int i, j, k, l, w, h
, u = (d + 1) % 3
, v = (d + 2) % 3;
int[] x = { 0, 0, 0 };
int[] q = { 0, 0, 0 };
int[,] posArea = { { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } };
int[,] negArea = { { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 }, { 0, 0, 0 } };
if (mask.Length < dims[u] * dims[v])
{
mask = new uint[dims[u] * dims[v]];
maskLayout = new MaskLayout[dims[u] * dims[v]];
}
q[d] = 1;
posArea[0, u] = -1;
posArea[1, v] = -1;
posArea[2, u] = 1;
posArea[3, v] = 1;
negArea[0, v] = -1;
negArea[1, u] = -1;
negArea[2, v] = 1;
negArea[3, u] = 1;
for (x[d] = -1; x[d] < dims[d]; )
{
//Compute mask
var n = 0;
for (x[v] = 0; x[v] < dims[v]; ++x[v])
{
for (x[u] = 0; x[u] < dims[u]; ++x[u], ++n)
{
var a = f(x[0], x[1], x[2]);
var b = f(x[0] + q[0], x[1] + q[1], x[2] + q[2]);
maskLayout[n].data = 0u;
if ((a != 0) == (b != 0))
{
mask[n] = 0;
}
else if (a != 0)
{
mask[n] = x[d] > -1 ? a : 0;
maskLayout[n].BackFace = false;
}
else
{
mask[n] = x[d] < dims[d] - 1 ? b : 0;
maskLayout[n].BackFace = true;
}
if (disableAO || mask[n] == 0)
{
//maskLayout[n].data = 4095u;
}
else
{
uint side1 = 0, side2 = 0, corner = 0;
var neighbors = new uint[4];
for (var t = 0; t < 4; ++t)
{
var tt = (t + 1) % 4;
if (a != 0)
{
side1 = (f(x[0] + q[0] + posArea[t, 0], x[1] + q[1] + posArea[t, 1], x[2] + q[2] + posArea[t, 2]) > 0u ? 1u : 0u);
side2 = (f(x[0] + q[0] + posArea[tt, 0], x[1] + q[1] + posArea[tt, 1], x[2] + q[2] + posArea[tt, 2]) > 0u ? 1u : 0u);
}
else
{
side1 = (f(x[0] + negArea[t, 0], x[1] + negArea[t, 1], x[2] + negArea[t, 2]) > 0u ? 1u : 0u);
side2 = (f(x[0] + negArea[tt, 0], x[1] + negArea[tt, 1], x[2] + negArea[tt, 2]) > 0u ? 1u : 0u);
}
if (side1 > 0 && side2 > 0)
{
neighbors[t] = 0;
}
else
{
if (a != 0)
{
corner = (f(x[0] + q[0] + posArea[t, 0] + posArea[tt, 0], x[1] + q[1] + posArea[t, 1] + posArea[tt, 1], x[2] + q[2] + posArea[t, 2] + posArea[tt, 2]) > 0u ? 1u : 0u);
}
else
{
corner = (f(x[0] + negArea[t, 0] + negArea[tt, 0], x[1] + negArea[t, 1] + negArea[tt, 1], x[2] + negArea[t, 2] + negArea[tt, 2]) > 0u ? 1u : 0u);
}
neighbors[t] = 3u - (side1 + side2 + corner);
}
maskLayout[n].SetOcclusion(t, neighbors[t]);
}
uint a00 = neighbors[1],
a01 = neighbors[2],
a11 = neighbors[3],
a10 = neighbors[0];
//if (a00 + a01 + a11 + a10 != 12)
// maskLayout[n].AOFace = true;
}
}
}
//Increment x[d]
++x[d];
//Generate mesh for mask using lexicographic ordering
n = 0;
for (j = 0; j < dims[v]; ++j)
{
for (i = 0; i < dims[u]; )
{
var c = mask[n];
if (c != 0)
{
var a = maskLayout[n];
if (disableGreedyMeshing || a.AOFace)
{
w = 1;
h = 1;
}
else
{
//Compute width
for (w = 1; c == mask[n + w] && (a.data == (maskLayout[n + w].data)) && i + w < dims[u]; ++w)
{
}
//Compute height (this is slightly awkward
var done = false;
for (h = 1; j + h < dims[v]; ++h)
{
for (k = 0; k < w; ++k)
{
if (c != mask[n + k + h * dims[u]] || a.data != maskLayout[n + k + h * dims[u]].data)
{
done = true;
break;
}
}
if (done)
{
break;
}
}
}
//Add quad
x[u] = i; x[v] = j;
int[] du = { 0, 0, 0 };
int[] dv = { 0, 0, 0 };
var normal = new Vector3(q[0], q[1], q[2]);
var aoFace = maskLayout[n].AOFace;
if (!maskLayout[n].BackFace)
{
dv[v] = h;
du[u] = w;
}
else
{
du[v] = h;
dv[u] = w;
normal = -normal;
}
var cr = ((c >> 16) & 0xff) / 255f;
var cg = ((c >> 8) & 0xff) / 255f;
var cb = (c & 0xff) / 255f;
var ao = 0f;
var AOcurve = new float[] { 0.45f, 0.65f, 0.85f, 1.0f };
var auCurveFactor = new float[] { 1f, 0.99f, 0.98f, 0.97f, 0.96f };
var aoFactor = auCurveFactor[maskLayout[n].TotalOcclusion()];
for (var o = 0; o < 4; ++o)
{
var pao = disableAO ? 1f : AOcurve[maskLayout[n].GetOcclusion(o)];
//vertices[o].Color = new Color(cr * pao, cg * pao, cb * pao);
vertices[o].Color = new Color(cr * aoFactor, cg * aoFactor, cb * aoFactor);
vertices[o].Normal = normal;
ao += pao;
}
ao /= 4f;
if (aoFace)
{
vertices[0].Position = new Vector3(x[0], x[1], x[2]);
vertices[1].Position = new Vector3(x[0] + du[0], x[1] + du[1], x[2] + du[2]);
vertices[2].Position = new Vector3(x[0] + du[0] + dv[0], x[1] + du[1] + dv[1], x[2] + du[2] + dv[2]);
vertices[3].Position = new Vector3(x[0] + dv[0], x[1] + dv[1], x[2] + dv[2]);
vertices[4].Position = (vertices[0].Position + vertices[1].Position + vertices[2].Position + vertices[3].Position) / 4;
vertices[4].Normal = normal;
vertices[4].Color = new Color(cr * ao, cg * ao, cb * ao);
}
else
{
vertices[0].Position = new Vector3(x[0], x[1], x[2]);
vertices[1].Position = new Vector3(x[0] + du[0], x[1] + du[1], x[2] + du[2]);
vertices[2].Position = new Vector3(x[0] + du[0] + dv[0], x[1] + du[1] + dv[1], x[2] + du[2] + dv[2]);
vertices[3].Position = new Vector3(x[0] + dv[0], x[1] + dv[1], x[2] + dv[2]);
}
var v0 = (ushort)volume.opaqueMesh.Add(vertices[0]);
var v1 = (ushort)volume.opaqueMesh.Add(vertices[1]);
var v2 = (ushort)volume.opaqueMesh.Add(vertices[2]);
var v3 = (ushort)volume.opaqueMesh.Add(vertices[3]);
if (aoFace)
{
var v4 = (ushort)volume.opaqueMesh.Add(vertices[4]);
volume.opaqueMesh.Triangle(v0, v4, v1);
volume.opaqueMesh.Triangle(v1, v4, v2);
volume.opaqueMesh.Triangle(v2, v4, v3);
volume.opaqueMesh.Triangle(v3, v4, v0);
}
else
{
volume.opaqueMesh.Quad(v0, v1, v2, v3);
}
//Zero-out mask
for (l = 0; l < h; ++l)
{
for (k = 0; k < w; ++k)
{
mask[n + k + l * dims[u]] = 0;
maskLayout[n + k + l * dims[u]].data = 4095u;
}
}
//Increment counters and continue
i += w; n += w;
}
else
{
++i; ++n;
}
}
}
}
}
volume.opaqueMesh.Update();
return volume.opaqueMesh.VertexCount;
}
public void MakeRoadGeometry(GraphicsDevice device)
{
roadObject = new VertexBufferObject(Center, Area);
List <VertexPositionColorNormal> roadverts = new List <VertexPositionColorNormal>();
List <int> roadinds = new List <int>();
Color roadColor = new Color(87, 59, 12);
float roadwidth = 1.5f;
foreach (Road r in Roads)
{
float d = Vector3.Distance(r.A, r.B);
Vector3 dir = r.B - r.A;
dir.Normalize();
Vector3 fxz = r.B - r.A;
fxz.Y = 0;
fxz.Normalize();
Vector3 right = Vector3.Cross(Vector3.Up, fxz) * roadwidth * .5f;
int ioff = roadverts.Count;
int vc = 0;
for (float t = -1; t < d + 1; t += .5f)
{
Vector3 p = r.A - Center + dir * t;
p.Y = Area.HeightAt(p + Center) - Center.Y;
Vector3 p1 = p - right;
Vector3 p2 = p + right;
p1.Y = Area.HeightAt(p1 + Center) - Center.Y + .05f;
p2.Y = Area.HeightAt(p2 + Center) - Center.Y + .05f;
roadverts.Add(new VertexPositionColorNormal(p1, roadColor, Vector3.Zero));
roadverts.Add(new VertexPositionColorNormal(p2, roadColor, Vector3.Zero));
vc += 2;
}
int ic = roadinds.Count;
for (int i = 0; i < vc - 2; i += 2)
{
// top square
roadinds.Add(ioff + i);
roadinds.Add(ioff + i + 1);
roadinds.Add(ioff + i + 2);
roadinds.Add(ioff + i + 1);
roadinds.Add(ioff + i + 3);
roadinds.Add(ioff + i + 2);
}
// normals
for (int i = ic; i < roadinds.Count; i += 3)
{
VertexPositionColorNormal v1 = roadverts[roadinds[i]], v2 = roadverts[roadinds[i + 1]], v3 = roadverts[roadinds[i + 2]];
Vector3 d1 = v1.Position - v2.Position;
Vector3 d2 = v3.Position - v1.Position;
d1.Normalize(); d2.Normalize();
Vector3 normal = Vector3.Cross(d1, d2);
v1.Normal += normal; v2.Normal += normal; v3.Normal += normal;
roadverts[roadinds[i]] = v1;
roadverts[roadinds[i + 1]] = v2;
roadverts[roadinds[i + 2]] = v3;
}
for (int i = ioff; i < roadverts.Count; i++)
{
roadverts[i].Normal.Normalize();
}
}
// weld some verticies together
// to form nice edges
for (int i = 0; i < roadverts.Count; i++)
{
for (int j = 0; j < roadverts.Count; j++)
{
if (i != j)
{
float d = Vector3.DistanceSquared(roadverts[i].Position, roadverts[j].Position);
if (d < .2f)
{
Vector3 mid = (roadverts[i].Position + roadverts[j].Position) * .5f;
roadverts[i] = new VertexPositionColorNormal(mid, roadverts[i].Color, roadverts[i].Normal);
roadverts[j] = new VertexPositionColorNormal(mid, roadverts[j].Color, roadverts[j].Normal);
}
}
}
}
roadObject.VBuffer = new VertexBuffer(device, typeof(VertexPositionColorNormal), roadverts.Count, BufferUsage.WriteOnly);
roadObject.VBuffer.SetData(roadverts.ToArray());
roadObject.IBuffer = new IndexBuffer(device, typeof(int), roadinds.Count, BufferUsage.WriteOnly);
roadObject.IBuffer.SetData(roadinds.ToArray());
}
public void GenerateAt(int x, int y, int z)
{
int corners = 0;
for (int i = 0; i < 8; i++)
{
if (map[x + i / 4, y + i % 4 / 2, z + i % 2] < 0)
{
corners |= 1 << i;
}
}
if (corners == 0 || corners == 255)
{
return;
}
VertexPositionColor[] vs = new VertexPositionColor[24];
Color c = Color.LightSteelBlue;
vs[0] = new VertexPositionColor(new Vector3((x + 0), (y + 0), (z + 0)), c);
vs[1] = new VertexPositionColor(new Vector3((x + 1), (y + 0), (z + 0)), c);
vs[2] = new VertexPositionColor(new Vector3((x + 1), (y + 0), (z + 0)), c);
vs[3] = new VertexPositionColor(new Vector3((x + 1), (y + 1), (z + 0)), c);
vs[4] = new VertexPositionColor(new Vector3((x + 1), (y + 1), (z + 0)), c);
vs[5] = new VertexPositionColor(new Vector3((x + 0), (y + 1), (z + 0)), c);
vs[6] = new VertexPositionColor(new Vector3((x + 0), (y + 1), (z + 0)), c);
vs[7] = new VertexPositionColor(new Vector3((x + 0), (y + 0), (z + 0)), c);
vs[8] = new VertexPositionColor(new Vector3((x + 0), (y + 0), (z + 1)), c);
vs[9] = new VertexPositionColor(new Vector3((x + 1), (y + 0), (z + 1)), c);
vs[10] = new VertexPositionColor(new Vector3((x + 1), (y + 0), (z + 1)), c);
vs[11] = new VertexPositionColor(new Vector3((x + 1), (y + 1), (z + 1)), c);
vs[12] = new VertexPositionColor(new Vector3((x + 1), (y + 1), (z + 1)), c);
vs[13] = new VertexPositionColor(new Vector3((x + 0), (y + 1), (z + 1)), c);
vs[14] = new VertexPositionColor(new Vector3((x + 0), (y + 1), (z + 1)), c);
vs[15] = new VertexPositionColor(new Vector3((x + 0), (y + 0), (z + 1)), c);
vs[16] = new VertexPositionColor(new Vector3((x + 0), (y + 0), (z + 0)), c);
vs[17] = new VertexPositionColor(new Vector3((x + 0), (y + 0), (z + 1)), c);
vs[18] = new VertexPositionColor(new Vector3((x + 0), (y + 1), (z + 0)), c);
vs[19] = new VertexPositionColor(new Vector3((x + 0), (y + 1), (z + 1)), c);
vs[20] = new VertexPositionColor(new Vector3((x + 1), (y + 0), (z + 0)), c);
vs[21] = new VertexPositionColor(new Vector3((x + 1), (y + 0), (z + 1)), c);
vs[22] = new VertexPositionColor(new Vector3((x + 1), (y + 1), (z + 0)), c);
vs[23] = new VertexPositionColor(new Vector3((x + 1), (y + 1), (z + 1)), c);
OutlineBuffer.SetData <VertexPositionColor>(OutlineLocation * VertexPositionColor.VertexDeclaration.VertexStride, vs, 0, 24, VertexPositionColor.VertexDeclaration.VertexStride);
OutlineLocation += 24;
QEF3D qef = new QEF3D();
Vector3 average_normal = new Vector3();
for (int i = 0; i < 12; i++)
{
int c1 = edges[i, 0];
int c2 = edges[i, 1];
int m1 = (corners >> c1) & 1;
int m2 = (corners >> c2) & 1;
if (m1 == m2)
{
continue;
}
float d1 = map[x + c1 / 4, y + c1 % 4 / 2, z + c1 % 2];
float d2 = map[x + c2 / 4, y + c2 % 4 / 2, z + c2 % 2];
Vector3 p1 = new Vector3((float)((c1 / 4)), (float)((c1 % 4 / 2)), (float)((c1 % 2)));
Vector3 p2 = new Vector3((float)((c2 / 4)), (float)((c2 % 4 / 2)), (float)((c2 % 2)));
Vector3 intersection = Sampler.GetIntersection(p1, p2, d1, d2);
Vector3 normal = Sampler.GetNormal(intersection + new Vector3(x, y, z)); //GetNormal(x, y);
average_normal += normal;
qef.Add(intersection, normal);
}
Vector3 p = qef.Solve2(0, 16, 0);
Vector3 n = average_normal / (float)qef.Intersections.Count;
VertexPositionColorNormal[] v2 = new VertexPositionColorNormal[1];
Vector3 c_v = n * 0.5f + Vector3.One * 0.5f;
c_v.Normalize();
Color clr = new Color(c_v);
v2[0] = new VertexPositionColorNormal(new Vector3((p.X + x), (p.Y + y), (p.Z + z)), clr, n);
VertexBuffer.SetData <VertexPositionColorNormal>(VertexCount * VertexPositionColorNormal.VertexDeclaration.VertexStride, v2, 0, 1, VertexPositionColorNormal.VertexDeclaration.VertexStride);
vertex_indexes[x, y, z] = VertexCount;
VertexCount++;
/*vs[0] = new VertexPositionColor(new Vector3((x + 0) , (y + 0) , 0), Color.Black);
* vs[1] = new VertexPositionColor(new Vector3((x + 1) , (y + 0) , 0), Color.Black);
* vs[2] = new VertexPositionColor(new Vector3((x + 1) , (y + 0) , 0), Color.Black);
* vs[3] = new VertexPositionColor(new Vector3((x + 1) , (y + 1) , 0), Color.Black);
* vs[4] = new VertexPositionColor(new Vector3((x + 1) , (y + 1) , 0), Color.Black);
* vs[5] = new VertexPositionColor(new Vector3((x + 0) , (y + 1) , 0), Color.Black);
* vs[6] = new VertexPositionColor(new Vector3((x + 0) , (y + 1) , 0), Color.Black);
* vs[7] = new VertexPositionColor(new Vector3((x + 0) , (y + 0) , 0), Color.Black);
*
* vs[8] = new VertexPositionColor(new Vector3((p.X + x) , (p.Y + y) , 0), Color.Black);
* vs[9] = new VertexPositionColor(new Vector3((p.X + x + .1f) , (p.Y + y + .1f) , 0), Color.Black);
* index = 10;
*
* VertexBuffer.SetData<VertexPositionColor>(VertexCount * VertexPositionColor.VertexDeclaration.VertexStride, vs, 0, index, VertexPositionColor.VertexDeclaration.VertexStride);
* VertexCount += index;*/
}
public Ground(ContentManager content, float Y)
{
heightMap = new float[width + 1, length + 1];
vertices = new VertexPositionColorNormal[width * length * 6]; //we are intentionally duplicating vertices, hence the * 6 and lack of indexing
positionY = Y;
var random = new Random();
//Generate terrain
for (int x = 0; x <= width; x++)
{
for (int y = 0; y <= length; y++)
{
float value = ((float)noiseSource.GetValue(x * 0.5f, (y + positionY / scale.Y) * 0.5f, 0.5f) + 0) / 1;
//If this tile is under the road then make it have 0 height so it doesn't stick out
if (Math.Abs(x - width / 2) * scale.X < Road.Size * 0.6f)
{
value = 0;
}
heightMap[x, y] = value;
}
}
//After generating the heightmap, generate the actual vertices
for (int x = 0; x < width; x++)
{
for (int y = 0; y < length; y++)
{
int i = (width * y + x) * 6; //Starting vertex index for this tile
VertexPositionColorNormal vertex;
//6 vertices per tile (x, y)
for (int j = 0; j < 6; j++)
{
vertex = new VertexPositionColorNormal();
//Assign position
float ox = x + offsets[j].X;
float oy = y + offsets[j].Y;
float height = heightMap[(int)ox, (int)oy];
vertex.Position = new Vector3(ox * scale.X, oy * scale.Y, height * 1.5f);
//Generate base color based on the following array
//Each index corresponds to a different "biome"
//The base color therefore implicitly depends on the biome (and usually explicitly depends on height)
Vector3[] colors =
{
new Vector3(0.2f, (heightMap[(int)ox, (int)oy] + 1) / 4 + 0.3f, 0.3f),
new Vector3(height.Map(-1, 1, 0.4f, 0.9f), 0.4f, 0.3f),
new Vector3(height.Map(-1, 1, 0.7f, 0.9f),height.Map(-1, 1,0.6f, 0.8f), height.Map(-1, 1, 0.2f, 0.5f)),
};
//Determine which biome to use based on current position
float val = Math.Abs(y + positionY) / biomeScale % colors.Length;
int primary = (int)val; //Current biome color
int secondary = (primary + 1) % colors.Length; //Next biome color
//Smoothly blend between the biome colors if we are in between biomes
float blendAmt = 1 - (float)Math.Pow((val - primary) * 2 - 1f, 2);
if (val - primary < 0.8f)
{
blendAmt = 1;
}
Vector3 blended = colors[primary] * blendAmt + colors[secondary] * (1 - blendAmt);
//Assign color
Color color = new Color(blended.X, blended.Y, blended.Z);
vertex.Color = color;
vertices[i + j] = vertex; //Base tile index + local index
}
}
}
//These calculations depend on an entire triangle, so I compute them afterwards
for (int i = 0; i < vertices.Length; i += 3)
{
//Compute normal
Vector3 u = vertices[i].Position - vertices[i + 1].Position;
Vector3 v = vertices[i].Position - vertices[i + 2].Position;
Vector3 normal = Vector3.Cross(v, u);
normal.Normalize();
//Compute average color of the 3 vertices of a triangle
Color color = Color.White;
color.R = Math.Max(Math.Max(vertices[i + 0].Color.R, vertices[i + 1].Color.R), vertices[i + 2].Color.R);
color.G = Math.Max(Math.Max(vertices[i + 0].Color.G, vertices[i + 1].Color.G), vertices[i + 2].Color.G);
color.B = Math.Max(Math.Max(vertices[i + 0].Color.B, vertices[i + 1].Color.B), vertices[i + 2].Color.B);
//Assign the same normal and average color to all 3 vertices
for (int j = 0; j < 3; j++)
{
vertices[i + j].Normal = normal;
vertices[i + j].Color = color;
}
}
}
public static IEnumerable <VertexPositionColorNormal> getTrisAlternatingOld(VertexPositionColorNormal[] Data, int Depth, int Width)
{
VertexPositionColorNormal[,] source = new VertexPositionColorNormal[Width, Depth]; //The new, easy to read 2D array
for (int x = 0; x < Width; x++) //Convert!
{
for (int y = 0; y < Depth; y++)
{
source[x, y] = Data[x + y * Width];
}
}
var result = new List <VertexPositionColorNormal>();
for (int x = 0; x < Width - 1; x++)
{
for (int y = 0; y < Depth - 1; y++)
{
if ((y + x % 2) % 2 == 0)
{
var a = source[x, y];
var b = source[x + 1, y];
var c = source[x + 1, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
}
b = source[x + 1, y + 1];
c = source[x, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
}
}
else
{
var a = source[x, y];
var b = source[x + 1, y];
var c = source[x, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
}
a = source[x + 1, y];
b = source[x + 1, y + 1];
c = source[x, y + 1];
if (a.Color != Color.Transparent && b.Color != Color.Transparent && c.Color != Color.Transparent)
{
result.Add(a);
result.Add(b);
result.Add(c);
}
}
}
}
return(result);
}
public void Initialize(Microsoft.Xna.Framework.Game game, Color color, float[] verts, int[] tris)
{
_game = game;
_vertexBuffer = new VertexBuffer(game.GraphicsDevice, typeof(VertexPositionColorNormal), verts.Length / 3, BufferUsage.None);
_indexBuffer = new IndexBuffer(game.GraphicsDevice, typeof(int), tris.Length, BufferUsage.None);
var data = new VertexPositionColorNormal[verts.Length/3];
for (int i = 0; i < verts.Length / 3; i++)
data[i] = new VertexPositionColorNormal(new Vector3(-verts[(i*3) + 0], verts[(i*3)+1], -verts[(i*3)+2]), color, new Vector3(0));
GenerateNormals(data, tris);
_vertexBuffer.SetData(data);
_indexBuffer.SetData(tris);
}
public void GenerateAt(int x, int y)
{
int corners = 0;
for (int i = 0; i < 4; i++)
{
if (map[x + i / 2, y + i % 2] < 0)
{
corners |= 1 << i;
}
}
if (corners == 0 || corners == 15)
{
return;
}
VertexPositionColor[] vs = new VertexPositionColor[10];
Color c = Color.LightSteelBlue;
vs[0] = new VertexPositionColor(new Vector3((x + 0) * Size, (y + 0) * Size, 0), c);
vs[1] = new VertexPositionColor(new Vector3((x + 1) * Size, (y + 0) * Size, 0), c);
vs[2] = new VertexPositionColor(new Vector3((x + 1) * Size, (y + 0) * Size, 0), c);
vs[3] = new VertexPositionColor(new Vector3((x + 1) * Size, (y + 1) * Size, 0), c);
vs[4] = new VertexPositionColor(new Vector3((x + 1) * Size, (y + 1) * Size, 0), c);
vs[5] = new VertexPositionColor(new Vector3((x + 0) * Size, (y + 1) * Size, 0), c);
vs[6] = new VertexPositionColor(new Vector3((x + 0) * Size, (y + 1) * Size, 0), c);
vs[7] = new VertexPositionColor(new Vector3((x + 0) * Size, (y + 0) * Size, 0), c);
OutlineBuffer.SetData <VertexPositionColor>(OutlineLocation * VertexPositionColor.VertexDeclaration.VertexStride, vs, 0, 8, VertexPositionColor.VertexDeclaration.VertexStride);
OutlineLocation += 8;
QEF qef = new QEF();
Vector3 average_normal = new Vector3();
for (int i = 0; i < 4; i++)
{
int c1 = edges[i, 0];
int c2 = edges[i, 1];
int m1 = (corners >> c1) & 1;
int m2 = (corners >> c2) & 1;
if (m1 == m2)
{
continue;
}
float d1 = map[x + c1 / 2, y + c1 % 2];
float d2 = map[x + c2 / 2, y + c2 % 2];
Vector2 p1 = new Vector2((float)((c1 / 2)), (float)((c1 % 2)));
Vector2 p2 = new Vector2((float)((c2 / 2)), (float)((c2 % 2)));
Vector2 intersection = Sampler.GetIntersection(p1, p2, d1, d2);
Vector2 normal = Sampler.GetNormal(intersection + new Vector2(x, y)); //GetNormal(x, y);
average_normal += new Vector3(normal, 0);
qef.Add(intersection, normal);
}
average_normal /= (float)qef.Intersections.Count;
average_normal.Normalize();
vertices[x, y] = qef.Solve2(0, 16, 0);
Vector2 p = vertices[x, y];
Color n_c = new Color(average_normal * 0.5f + Vector3.One * 0.5f);
VertexPositionColorNormal v = new VertexPositionColorNormal(new Vector3((p.X + x) * Size, (p.Y + y) * Size, 0), n_c, average_normal);
Vertices.Add(v);
vertex_indexes[x, y] = VertexCount;
VertexCount++;
}
private void ConstructCube()
{
vertices = new VertexPositionColorNormal[NUM_VERTICES];
//Values are set from the bottomleftfront corner of a box.
// Calculate the position of the vertices on the top face.
Vector3 topLeftFront = position + new Vector3(0.0f, 1.0f, 0.0f) * Size;
Vector3 topLeftBack = position + new Vector3(0.0f, 1.0f, 1.0f) * Size;
Vector3 topRightFront = position + new Vector3(1.0f, 1.0f, 0.0f) * Size;
Vector3 topRightBack = position + new Vector3(1.0f, 1.0f, 1.0f) * Size;
// Calculate the position of the vertices on the bottom face.
Vector3 btmLeftFront = position + new Vector3(0.0f, 0.0f, 0.0f) * Size;
Vector3 btmLeftBack = position + new Vector3(0.0f, 0.0f, 1.0f) * Size;
Vector3 btmRightFront = position + new Vector3(1.0f, 0.0f, 0.0f) * Size;
Vector3 btmRightBack = position + new Vector3(1.0f, 0.0f, 1.0f) * Size;
// Normal vectors for each face (needed for lighting / display)
Vector3 normalFront = new Vector3(0.0f, 0.0f, 1.0f) * Size;
Vector3 normalBack = new Vector3(0.0f, 0.0f, -1.0f) * Size;
Vector3 normalTop = new Vector3(0.0f, 1.0f, 0.0f) * Size;
Vector3 normalBottom = new Vector3(0.0f, -1.0f, 0.0f) * Size;
Vector3 normalLeft = new Vector3(-1.0f, 0.0f, 0.0f) * Size;
Vector3 normalRight = new Vector3(1.0f, 0.0f, 0.0f) * Size;
// UV texture coordinates
Vector2 textureTopLeft = new Vector2(1.0f * Size.X, 0.0f * Size.Y);
Vector2 textureTopRight = new Vector2(0.0f * Size.X, 0.0f * Size.Y);
Vector2 textureBottomLeft = new Vector2(1.0f * Size.X, 1.0f * Size.Y);
Vector2 textureBottomRight = new Vector2(0.0f * Size.X, 1.0f * Size.Y);
// Add the vertices for the FRONT face.
vertices[0] = new VertexPositionColorNormal(topLeftFront, Color, normalFront);
vertices[1] = new VertexPositionColorNormal(btmLeftFront, Color, normalFront);
vertices[2] = new VertexPositionColorNormal(topRightFront, Color, normalFront);
vertices[3] = new VertexPositionColorNormal(btmLeftFront, Color, normalFront);
vertices[4] = new VertexPositionColorNormal(btmRightFront, Color, normalFront);
vertices[5] = new VertexPositionColorNormal(topRightFront, Color, normalFront);
// Add the vertices for the BACK face.
vertices[6] = new VertexPositionColorNormal(topLeftBack, Color, normalBack);
vertices[7] = new VertexPositionColorNormal(topRightBack, Color, normalBack);
vertices[8] = new VertexPositionColorNormal(btmLeftBack, Color, normalBack);
vertices[9] = new VertexPositionColorNormal(btmLeftBack, Color, normalBack);
vertices[10] = new VertexPositionColorNormal(topRightBack, Color, normalBack);
vertices[11] = new VertexPositionColorNormal(btmRightBack, Color, normalBack);
// Add the vertices for the TOP face.
vertices[12] = new VertexPositionColorNormal(topLeftFront, Color, normalTop);
vertices[13] = new VertexPositionColorNormal(topRightBack, Color, normalTop);
vertices[14] = new VertexPositionColorNormal(topLeftBack, Color, normalTop);
vertices[15] = new VertexPositionColorNormal(topLeftFront, Color, normalTop);
vertices[16] = new VertexPositionColorNormal(topRightFront, Color, normalTop);
vertices[17] = new VertexPositionColorNormal(topRightBack, Color, normalTop);
// Add the vertices for the BOTTOM face.
vertices[18] = new VertexPositionColorNormal(btmLeftFront, Color,normalBottom);
vertices[19] = new VertexPositionColorNormal(btmLeftBack, Color, normalBottom);
vertices[20] = new VertexPositionColorNormal(btmRightBack, Color, normalBottom);
vertices[21] = new VertexPositionColorNormal(btmLeftFront, Color, normalBottom);
vertices[22] = new VertexPositionColorNormal(btmRightBack, Color, normalBottom);
vertices[23] = new VertexPositionColorNormal(btmRightFront, Color, normalBottom);
// Add the vertices for the LEFT face.
vertices[24] = new VertexPositionColorNormal(topLeftFront, Color, normalLeft);
vertices[25] = new VertexPositionColorNormal(btmLeftBack, Color, normalLeft);
vertices[26] = new VertexPositionColorNormal(btmLeftFront, Color, normalLeft);
vertices[27] = new VertexPositionColorNormal(topLeftBack, Color, normalLeft);
vertices[28] = new VertexPositionColorNormal(btmLeftBack, Color, normalLeft);
vertices[29] = new VertexPositionColorNormal(topLeftFront, Color, normalLeft);
// Add the vertices for the RIGHT face.
vertices[30] = new VertexPositionColorNormal(topRightFront, Color, normalRight);
vertices[31] = new VertexPositionColorNormal(btmRightFront, Color, normalRight);
vertices[32] = new VertexPositionColorNormal(btmRightBack, Color, normalRight);
vertices[33] = new VertexPositionColorNormal(topRightBack, Color, normalRight);
vertices[34] = new VertexPositionColorNormal(topRightFront, Color, normalRight);
vertices[35] = new VertexPositionColorNormal(btmRightBack, Color, normalRight);
_isConstructed = true;
}
private void AddFlatTriangle(bool flipped, params int[] indexes)
{
VertexPositionColorNormal[] verts = new VertexPositionColorNormal[indexes.Length];
for (int i = 0; i < verts.Length; i++)
{
verts[i] = new VertexPositionColorNormal(CalculatedVertices[indexes[i]].Position, CalculatedVertices[indexes[i]].Color, Vector3.Zero);
}
if (indexes.Length > 3)
{
if (!flipped)
{
Vector3 n = GetNormalQ(ref verts, 2, 0, 1, 1, 3, 2);
Vector3 c_v = n * 0.5f + Vector3.One * 0.5f;
c_v.Normalize();
Color clr = new Color(c_v);
Vector3 d = new Vector3(-.1f, -1f, -.1f);
d.Normalize();
float g = (Vector3.Dot(n, d) + 1.0f) * 0.5f;
//clr = new Color(0, g, 0);
for (int i = 0; i < 4; i++)
{
verts[i].Normal = n;
verts[i].Color = clr;
}
//GetNormal(ref verts, 2, 0, 1);
Vertices.Add(verts[2]);
Vertices.Add(verts[0]);
Vertices.Add(verts[1]);
//GetNormal(ref verts, 1, 3, 2);
Vertices.Add(verts[1]);
Vertices.Add(verts[3]);
Vertices.Add(verts[2]);
}
else
{
Vector3 n = GetNormalQ(ref verts, 2, 1, 0, 1, 2, 3);
Vector3 c_v = n * 0.5f + Vector3.One * 0.5f;
c_v.Normalize();
Color clr = new Color(c_v);
Vector3 d = new Vector3(-.1f, -1f, -.1f);
d.Normalize();
float g = (Vector3.Dot(n, d) + 1.0f) * 0.5f;
//clr = new Color(0, g, 0);
for (int i = 0; i < 4; i++)
{
verts[i].Normal = n;
verts[i].Color = clr;
}
//GetNormal(ref verts, 2, 1, 0);
Vertices.Add(verts[2]);
Vertices.Add(verts[1]);
Vertices.Add(verts[0]);
//GetNormal(ref verts, 1, 2, 3);
Vertices.Add(verts[1]);
Vertices.Add(verts[2]);
Vertices.Add(verts[3]);
}
}
else if (indexes.Length == 3)
{
/*GetNormal(ref verts, 0, 1, 2);
* Vertices.Add(verts[0]);
* Vertices.Add(verts[1]);
* Vertices.Add(verts[2]);*/
}
}
private bool CreateMesh(out VertexPositionColorNormal[] verts, out short[] indices)
{
List<VertexPositionColorNormal> vertsList = new List<VertexPositionColorNormal>();
List<short> indicesList = new List<short>();
#region NonSolid
if (!Solid)
{
for (int x = 0; x < Control.CHUNK_SIZE; x++)
{
for (int y = 0; y < Control.CHUNK_SIZE; y++)
{
for (int z = 0; z < Control.CHUNK_SIZE; z++)
{
Block cData = _data[x, y, z];
if (cData == 0x00 || cData == (byte)BT.Reserved)
continue;
Color color = cData.color;
#region Left
if (this[x - 1, y, z] == 0x00) //Left side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Left;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z), Normal, color));//bottom front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z + 1), Normal, color));//bottom back
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z), Normal, color));//top front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z + 1), Normal, color));//top back
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 3));
}
#endregion
#region Right
if (this[x + 1, y, z] == 0x00) //Right side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Right;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z), Normal, color));//bottom front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z + 1), Normal, color));//bottom back
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z), Normal, color));//top front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z + 1), Normal, color));//top back
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 3));
}
#endregion
#region Bottom
if (this[x, y - 1, z] == 0x00) //Bottom side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Down;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z), Normal, color)); //left front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z + 1), Normal, color)); //left back
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z), Normal, color)); //right front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z + 1), Normal, color)); //right back
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 3));
}
#endregion
#region Top
if (this[x, y + 1, z] == 0x00) //Top side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Up;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z), Normal, color)); //left front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z + 1), Normal, color)); //left back
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z), Normal, color)); //right front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z + 1), Normal, color)); //right back
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 3));
}
#endregion
#region Front
if (this[x, y, z - 1] == 0x00) //Front side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Forward;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z), Normal, color)); //left bottom
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z), Normal, color)); //left top
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z), Normal, color)); //right bottom
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z), Normal, color)); //right top
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 3));
indicesList.Add((short)(numVerts + 3));
indicesList.Add((short)(numVerts + 1));
indicesList.Add(numVerts);
}
#endregion
#region Back
if (this[x, y, z + 1] == 0x00) //Back visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Backward;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z + 1), Normal, color)); //left bottom
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z + 1), Normal, color)); //left top
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z + 1), Normal, color)); //right bottom
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z + 1), Normal, color)); //right top
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 3));
}
#endregion
}
}
}
}
#endregion
#region Solid
else
{
#region Check Sides
bool drawFront = true, drawBack = true, drawLeft = true, drawRight = true, drawBottom = true, drawTop = true;
Chunk c = MapManager.GetChunk(Position + Int3.Backward);
if (c != null)
if (c[CF.isLoaded] && c.Solid)
drawFront = false;
c = MapManager.GetChunk(Position + Int3.Forward);
if (c != null)
if (c[CF.isLoaded] && c.Solid)
drawBack = false;
c = MapManager.GetChunk(Position + Int3.Left);
if (c != null)
if (c[CF.isLoaded] && c.Solid)
drawLeft = false;
c = MapManager.GetChunk(Position + Int3.Right);
if (c != null)
if (c[CF.isLoaded] && c.Solid)
drawRight = false;
c = MapManager.GetChunk(Position + Int3.Up);
if (c != null)
if (c[CF.isLoaded] && c.Solid)
drawTop = false;
c = MapManager.GetChunk(Position + Int3.Down);
if (c != null)
if (c[CF.isLoaded] && c.Solid)
drawBottom = false;
c = null;
#endregion
if (drawBack || drawBottom || drawFront || drawLeft || drawRight || drawTop)
{
for (int index0 = 0; index0 < Control.CHUNK_SIZE; index0++)
{
for (int index1 = 0; index1 < Control.CHUNK_SIZE; index1++)
{
int x, y, z;
Block cData;
Color color;
#region Front
if (drawFront)
{
x = index0;
y = index1;
z = 0;
cData = _data[x, y, z];
color = cData.color;
#region Front Verts
if (this[x, y, z - 1] == 0x00) //Front side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Forward;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z), Normal, color)); //left bottom
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z), Normal, color)); //left top
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z), Normal, color)); //right bottom
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z), Normal, color)); //right top
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 3));
indicesList.Add((short)(numVerts + 3));
indicesList.Add((short)(numVerts + 1));
indicesList.Add(numVerts);
}
#endregion
}
#endregion
#region Back
if (drawBack)
{
x = index0;
y = index1;
z = Control.CHUNK_SIZE - 1;
cData = _data[x, y, z];
color = cData.color;
#region Back Verts
if (this[x, y, z + 1] == 0x00) //Back visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Backward;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z + 1), Normal, color)); //left bottom
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z + 1), Normal, color)); //left top
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z + 1), Normal, color)); //right bottom
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z + 1), Normal, color)); //right top
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 3));
}
#endregion
}
#endregion
#region Bottom
if (drawBottom)
{
x = index0;
y = 0;
z = index1;
cData = _data[x, y, z];
color = cData.color;
#region Bottom Verts
if (this[x, y - 1, z] == 0x00) //Bottom side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Down;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z), Normal, color)); //left front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z + 1), Normal, color)); //left back
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z), Normal, color)); //right front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z + 1), Normal, color)); //right back
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 3));
}
#endregion
}
#endregion
#region Top
if (drawTop)
{
x = index0;
y = Control.CHUNK_SIZE - 1;
z = index1;
cData = _data[x, y, z];
color = cData.color;
#region Top Verts
if (this[x, y + 1, z] == 0x00) //Top side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Up;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z), Normal, color)); //left front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z + 1), Normal, color)); //left back
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z), Normal, color)); //right front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z + 1), Normal, color)); //right back
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 3));
}
#endregion
}
#endregion
#region Left
if (drawLeft)
{
x = 0;
y = index0;
z = index1;
cData = _data[x, y, z];
color = cData.color;
#region Left Verts
if (this[x - 1, y, z] == 0x00) //Left side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Left;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z), Normal, color));//bottom front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y, z + 1), Normal, color));//bottom back
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z), Normal, color));//top front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x, y + 1, z + 1), Normal, color));//top back
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 3));
}
#endregion
}
#endregion
#region Right
if (drawRight)
{
x = Control.CHUNK_SIZE - 1;
y = index0;
z = index1;
cData = _data[x, y, z];
color = cData.color;
#region Right Verts
if (this[x + 1, y, z] == 0x00) //Right side visible?
{
short numVerts = (short)vertsList.Count;
Vector3 Normal = Vector3.Right;
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z), Normal, color));//bottom front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y, z + 1), Normal, color));//bottom back
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z), Normal, color));//top front
vertsList.Add(new VertexPositionColorNormal(new Vector3(x + 1, y + 1, z + 1), Normal, color));//top back
indicesList.Add(numVerts);
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 2));
indicesList.Add((short)(numVerts + 1));
indicesList.Add((short)(numVerts + 3));
}
#endregion
}
#endregion
}
}
}
}
#endregion
if (indicesList.Count == 0)
{
verts = null;
indices = null;
return false;
}
verts = vertsList.ToArray();
indices = indicesList.ToArray();
vertsList.Clear();
indicesList.Clear();
return true;
}