public StaticDecal(TerrainInfo map_info, Material mat, Vector3 pos, float size, int resolution, float rotation)
{
material = mat;
map_info.GetHeight(pos, ref pos.Y);
bounding = new BoundingSphere(pos, size);
float x1 = -size * 0.5f;
float z1 = -size * 0.5f;
vertices = new VertexTextureColor[(resolution + 1) * (resolution + 1) * 3 * 2];
int amount = 0;
Vector2 texD1 = new Vector2(0, 0), texD2 = new Vector2(1, 0), texD3 = new Vector2(0, 1), texD4 = new Vector2(1, 1);
Color4 color = material.color;
for (float i = 0; i < resolution; i++)
{
for (float j = 0; j < resolution; j++)
{
Vector3 position = new Vector3(x1, 0, z1);
Vector3 local_position;
local_position = rotatePoint(pos, position + new Vector3(0, 0, 0), rotation);
map_info.GetHeight(local_position, ref local_position.Y);
vertices[amount++] = new VertexTextureColor(local_position, new Vector2(i / resolution, j / resolution), color);
local_position = rotatePoint(pos, position + new Vector3(size / resolution, 0, size / resolution), rotation);
map_info.GetHeight(local_position, ref local_position.Y);
vertices[amount++] = new VertexTextureColor(local_position, new Vector2((i + 1) / resolution, (j + 1) / resolution), color);
local_position = rotatePoint(pos, position + new Vector3(0, 0, size / resolution), rotation);
map_info.GetHeight(local_position, ref local_position.Y);
vertices[amount++] = new VertexTextureColor(local_position, new Vector2(i / resolution, (j + 1) / resolution), color);
local_position = rotatePoint(pos, position + new Vector3(0, 0, 0), rotation);
map_info.GetHeight(local_position, ref local_position.Y);
vertices[amount++] = new VertexTextureColor(local_position, new Vector2(i / resolution, j / resolution), color);
local_position = rotatePoint(pos, position + new Vector3(size / resolution, 0, 0), rotation);
map_info.GetHeight(local_position, ref local_position.Y);
vertices[amount++] = new VertexTextureColor(local_position, new Vector2((i + 1) / resolution, j / resolution), color);
local_position = rotatePoint(pos, position + new Vector3(size / resolution, 0, size / resolution), rotation);
map_info.GetHeight(local_position, ref local_position.Y);
vertices[amount++] = new VertexTextureColor(local_position, new Vector2((i + 1) / resolution, (j + 1) / resolution), color);
z1 += size / resolution;
}
x1 += size / resolution;
z1 = -size * 0.5f;
}
vertexBuffer = Buffer.Create <VertexTextureColor>(Display.device, vertices, new BufferDescription(vertices.Length * VertexTextureColor.SizeInBytes, ResourceUsage.Default, BindFlags.VertexBuffer, CpuAccessFlags.None, ResourceOptionFlags.None, 0));
}
public void RebuildTerrain(int buffer, float quality)
{
int resX = (int)Math.Floor(info.width / quality);
int resY = (int)Math.Floor(info.height / quality);
float tileX = (float)info.width / resX;
float tileY = (float)info.height / resY;
/********* calc vertices *************/
vertices = new VertexTexture[resX * resY];
int pos = 0;
for (int x = 0; x < resX; x++)
{
for (int y = 0; y < resY; y++)
{
pos = x + y * resX;
vertices[pos].Position = new Vector3(tileX * x, 0, tileY * y);
info.GetHeight(vertices[pos].Position, ref vertices[pos].Position.Y);
vertices[pos].TexCoord.X = (float)x / resX;
vertices[pos].TexCoord.Y = (float)y / resY;
if (x == resX - 1)
{
vertices[pos].Position.X = info.width;
vertices[pos].TexCoord.X = 1;
}
if (y == resY - 1)
{
vertices[pos].Position.Z = info.height;
vertices[pos].TexCoord.Y = 1;
}
}
}
//*********** calc indexes ********************
indices = new int[(resX - 1) * (resY - 1) * 6];
int counter = 0;
for (uint y = 0; y < resY - 1; y++)
{
for (uint x = 0; x < resX - 1; x++)
{
int topLeft = (int)(x + y * resX);
int topRight = (int)((x + 1) + y * resX);
int lowerLeft = (int)(x + (y + 1) * resX);
int lowerRight = (int)((x + 1) + (y + 1) * resX);
indices[counter++] = topLeft;
indices[counter++] = topRight;
indices[counter++] = lowerLeft;
indices[counter++] = topRight;
indices[counter++] = lowerRight;
indices[counter++] = lowerLeft;
}
}
IndicesLength[buffer] = indices.Length;
indexBuffer[buffer] = new Buffer(Display.device, DataStream.Create(indices, false, false), new BufferDescription(indices.Length * 4, ResourceUsage.Default, BindFlags.IndexBuffer, CpuAccessFlags.None, ResourceOptionFlags.None, 0));
vertexBuffer[buffer] = Buffer.Create <VertexTexture>(Display.device, vertices, new BufferDescription(vertices.Length * VertexTexture.SizeInBytes, ResourceUsage.Default, BindFlags.VertexBuffer, CpuAccessFlags.None, ResourceOptionFlags.None, 0));
}
