public float[] GetHeights(int xstart, int zstart)
{
int size = chunkSize;
height = size - 1;
width = size - 1;
heights = new float[size * size];
biomes = new Biome[heights.Length];
vertexArray = new Vertex[heights.Length];
indexArray = new int[width * height * 6];
for (int xx = 0; xx < size; xx++)
{
for (int yy = 0; yy < size; yy++)
{
float _x = yy + ((int)x * (size - 1));
float _y = xx + ((int)z * (size - 1));
float terrainHeight = (float)parent.getNoise(_x, _y);
float biomeHeight = 1f, temperature = 1f;
int heightIndex = HeightIndexAt(yy, xx);
if (this.generateBiomes)
{
biomeHeight = (float)(parent.getNoise(((double)_y) * 0.1, ((double)_x) * 0.1));
temperature = (float)(parent.getNoise(((double)_y), terrainHeight, ((double)_x)));
Biome biome = new Biome();
biome.AverageTemperature = temperature;
if (System.Math.Abs(biomeHeight) < 0.3f)
{
biome.Topography = Biome.BiomeTopography.Plains;
}
else
{
biome.Topography = Biome.BiomeTopography.Hills;
}
biomeHeight *= 6 * (float)System.Math.Abs(biomeHeight);
biomes[heightIndex] = biome;
}
heights[heightIndex] = terrainHeight * biomeHeight * 25f;
}
}
return heights;
}
public Vertex(Vertex other)
{
this.position = other.position;
this.normal = other.normal;
this.texCoord0 = other.texCoord0;
this.texCoord1 = other.texCoord1;
this.tangent = other.tangent;
this.bitangent = other.bitangent;
for (int i = 0; i < 4; i++)
{
this.boneIndices[i] = other.boneIndices[i];
this.boneWeights[i] = other.boneWeights[i];
}
}
public void BuildVertices()
{
int heightPitch = height + 1;
int widthPitch = width + 1;
int idx = 0;
int hIdx = 0;
// int strength = 10; // multiplier for height map
for (int z = 0; z < heightPitch; z++)
{
for (int x = 0; x < widthPitch; x++)
{
// POSITION
vertexArray[idx++] = new Vertex(new Vector3f(scale.x * (x-(widthPitch/2)), heights[hIdx++] * scale.y, scale.z * (z - (heightPitch / 2))),
new Vector2f((float)-x / (float)widthPitch, (float)-z / (float)heightPitch),
new Vector3f());
/* vertexArray[idx++] = new Vertex(new Vector3f(scale.x * x, heights[hIdx++] * scale.y, scale.z * z),
new Vector2f((float)-x / (float)widthPitch, (float)-z / (float)heightPitch),
new Vector3f());*/
}
}
}
protected void AddNormal(int vertIndex, Vertex[] verts, float x, float y, float z)
{
int i = vertIndex;
verts[i].GetNormal().x += x;
verts[i].GetNormal().y += y;
verts[i].GetNormal().z += z;
}
protected void NormalizeNormal(int vertIndex, Vertex[] verts)
{
int i = vertIndex;
float x = verts[i].GetNormal().x;
float y = verts[i].GetNormal().y;
float z = verts[i].GetNormal().z;
float num2 = ((x * x) + (y * y)) + (z * z);
float num = 1f / (float)System.Math.Sqrt(num2);
x *= num;
y *= num;
z *= num;
verts[i].GetNormal().x = x;
verts[i].GetNormal().y = y;
verts[i].GetNormal().z = z;
}
protected void CalcNormals(int[] idc, Vertex[] verts)
{
for (int i = 0; i < idc.Length; i += 3)
{
int i1 = idc[i];
int i2 = idc[i + 1];
int i3 = idc[i + 2];
// p1
float x1 = verts[i1].GetPosition().x;
float y1 = verts[i1].GetPosition().y;
float z1 = verts[i1].GetPosition().z;
// p2
float x2 = verts[i2].GetPosition().x;
float y2 = verts[i2].GetPosition().y;
float z2 = verts[i2].GetPosition().z;
// p3
float x3 = verts[i3].GetPosition().x;
float y3 = verts[i3].GetPosition().y;
float z3 = verts[i3].GetPosition().z;
// u = p3 - p1
float ux = x3 - x1;
float uy = y3 - y1;
float uz = z3 - z1;
// v = p2 - p1
float vx = x2 - x1;
float vy = y2 - y1;
float vz = z2 - z1;
// n = cross(v, u)
float nx = (vy * uz) - (vz * uy);
float ny = (vz * ux) - (vx * uz);
float nz = (vx * uy) - (vy * ux);
// normalize(n)
float num2 = ((nx * nx) + (ny * ny)) + (nz * nz);
float num = 1f / (float)System.Math.Sqrt(num2);
nx *= num;
ny *= num;
nz *= num;
AddNormal(idc[i], verts, nx, ny, nz);
AddNormal(idc[i + 1], verts, nx, ny, nz);
AddNormal(idc[i + 2], verts, nx, ny, nz);
}
for (int i = 0; i < (verts.Length); i++)
{
NormalizeNormal(i, verts);
}
}
private void EndModel()
{
if (skeletons.Count > 0)
{
Skeleton skeleton = skeletons[skeletons.Count - 1];
if (skeleton.GetNumBones() > 0)
{
for (int i = 0; i < skeleton.GetNumBones(); i++)
skeleton.GetBone(i).SetToBindingPose();
skeleton.GetBone(0).CalculateBindingRotation();
skeleton.GetBone(0).CalculateBindingTranslation();
for (int i = 0; i < skeleton.GetNumBones(); i++)
{
skeleton.GetBone(i).StoreBindingPose();
skeleton.GetBone(i).ClearPose();
}
skeleton.GetBone(0).UpdateTransform();
}
if (hasAnimations)
{
for (int j = 0; j < animations.Count; j++)
{
skeletons[0].AddAnimation(animations[j]);
}
nodes[0].AddController(new AnimationController(skeletons[0]));
}
}
for (int i = 0; i < meshes.Count; i++)
{
List<Vertex> cVerts = vertices[i];
List<int> cFaces = faces[i];
List<Vector3f> cPos = positions[i];
List<Vector3f> cNorm = normals[i];
List<Vector2f> tc0 = texcoords0[i];
List<Vector2f> tc1 = texcoords1[i];
List<BoneAssign> ba = null;
Mesh mesh = meshes[i];
if (boneAssigns.Count > 0)
{
ba = boneAssigns[i];
}
int stride = 3;
if (tc1.Count > 0)
stride++;
for (int j = 0; j < cFaces.Count; j += stride)
{
Vertex v = new Vertex(cPos[cFaces[j]]);
if (cNorm.Count > 0)
{
mesh.GetAttributes().SetAttribute(VertexAttributes.NORMALS);
v.SetNormal(cNorm[cFaces[j + 1]]);
}
if (tc0.Count > 0)
{
mesh.GetAttributes().SetAttribute(VertexAttributes.TEXCOORDS0);
v.SetTexCoord1(tc0[cFaces[j + 2]]);
}
if (tc1.Count > 0)
{
mesh.GetAttributes().SetAttribute(VertexAttributes.TEXCOORDS1);
v.SetTexCoord1(tc1[cFaces[j + 3]]);
}
cVerts.Add(v);
}
List<int> indexData = new List<int>();
if (skeletons.Count > 0)
{
mesh.SetSkeleton(skeletons[0]);
if (boneAssigns.Count > 0)
{
for (int j = 0; j < ba.Count; j++)
{
Vertex v = cVerts[ba[j].GetVertexIndex()];
v.AddBoneIndex(ba[j].GetBoneIndex());
v.AddBoneWeight(ba[j].GetBoneWeight());
}
}
}
mesh.SetVertices(cVerts);
if (geoms.Count > 0)
{
Geometry parent = geoms[i];
Material material = null;
if (geomMats.ContainsKey(parent))
material = geomMats[parent];
else
material = new Material();
parent.Mesh = mesh;
parent.Material = material;
}
}
}
public float[] GetHeights(int xstart, int zstart)
{
int size = chunkSize;
height = size - 1;
width = size - 1;
heights = new float[size * size];
biomes = new Biome[heights.Length];
vertexArray = new Vertex[heights.Length];
indexArray = new int[width * height * 6];
for (int xx = 0; xx < size; xx++)
{
for (int yy = 0; yy < size; yy++)
{
float _x = yy + ((int)x * (size - 1));
float _y = xx + ((int)z * (size - 1));
float biomeHeight = 1f, temperature = 1f;
int heightIndex = HeightIndexAt(yy, xx);
float terrainHeight;
if (this.generateBiomes)
{
biomeHeight = (float)(parent.getSimplexNoise(((double)_y*0.6), ((double)_x*0.6)));
temperature = (float)(parent.getSimplexNoise(((double)_y), ((double)_x)));
terrainHeight = (float)parent.getSimplexNoise(_x, _y);
float mountainHeight = (float)parent.getNoise(_x*0.05f, _y*0.05f) * parent.GetWorleyNoise(_x*0.008f, _y*0.008f);
Biome biome = new Biome();
biome.AverageTemperature = temperature;
if (biomeHeight < 0.3f)
{
biome.Topography = Biome.BiomeTopography.Plains;
}
else
{
biome.Topography = Biome.BiomeTopography.Hills;
}
biomeHeight = (float)System.Math.Abs(biomeHeight) * 2;
biomeHeight *= biomeHeight;
biomes[heightIndex] = biome;
heights[heightIndex] = MathUtil.Lerp(terrainHeight * 10, mountainHeight * 150f, MathUtil.Clamp(biomeHeight, 0.0f, 1.0f));
}
else
{
terrainHeight = (float)parent.getNoise(_x, _y);
heights[heightIndex] = terrainHeight * 25f;
}
}
}
return heights;
}
private void LoopThrough(List<int> faces, ref List<Vertex> outVerts)
{
for (int i = 0; i < faces.Count; i++)
{
Vertex v = new Vertex(positions[faces[i]],
texCoords.Count > 0 ? texCoords[faces[i]] : null,
normals.Count > 0 ? normals[faces[i]] : null);
if (boneAssigns.ContainsKey(faces[i]))
{
BoneAssign[] vertBoneAssigns = boneAssigns[faces[i]];
for (int j = 0; j < vertBoneAssigns.Length; j++)
{
if (vertBoneAssigns[j] != null)
{
v.AddBoneIndex(vertBoneAssigns[j].GetBoneIndex());
v.AddBoneWeight(vertBoneAssigns[j].GetBoneWeight());
}
}
}
outVerts.Add(v);
}
}
