public Patch(IHeightMap map, int patchsize, int gridx, int gridy, int patchcount, float scale, float heightscale)
{
int c = patchsize;
float s = scale;
VertexP3T2[] vtx = new VertexP3T2[c * c];
int i = 0;
for (int y = 0; y < c; ++y)
{
for (int x = 0; x < c; ++x)
{
//x and y position
float px = (float)gridx * s + ((float)x / (float)(c - 1)) * s;
float py = (float)gridy * s + ((float)y / (float)(c - 1)) * s;
px -= s * patchcount / 2;
py -= s * patchcount / 2;
//z position (height)
float h = ((float)map.GetHeight(
gridx * (patchsize - 1) + x,
gridy * (patchsize - 1) + y)) * heightscale;
//add the vertex
vtx[i].position = new Vector3(px, h, py);
vtx[i++].texture0 = new Vector2(
(float)(gridx * (c - 1) + x) / (float)(patchcount * (c - 1)),
(float)(gridy * (c - 1) + y) / (float)(patchcount * (c - 1))
);
}
}
Vertices = Root.Instance.UserInterface.Renderer.CreateStaticVertexBuffer(vtx, Format.Size * vtx.Length);
Vertices.Format = Format;
}
public Patch(IHeightMap map, int patchsize, int gridx, int gridy, int patchcount,float scale,float heightscale)
{
int c = patchsize;
float s = scale;
VertexP3T2[] vtx = new VertexP3T2[c * c];
int i = 0;
for (int y = 0; y < c; ++y)
{
for (int x = 0; x < c; ++x)
{
//x and y position
float px = (float)gridx * s + ((float)x / (float)(c - 1)) * s;
float py = (float)gridy * s + ((float)y / (float)(c - 1)) * s;
px -= s * patchcount / 2;
py -= s * patchcount / 2;
//z position (height)
float h = ((float)map.GetHeight(
gridx * (patchsize - 1) + x,
gridy * (patchsize - 1) + y)) * heightscale;
//add the vertex
vtx[i].position=new Vector3(px, h, py);
vtx[i++].texture0=new Vector2(
(float)(gridx * (c - 1) + x) / (float)(patchcount * (c - 1)),
(float)(gridy * (c - 1) + y) / (float)(patchcount * (c - 1))
);
}
}
Vertices = Root.Instance.UserInterface.Renderer.CreateStaticVertexBuffer(vtx, Format.Size * vtx.Length);
Vertices.Format = Format;
}
private void BuildBuffers()
{
if (Vertices.Length/3 != TextureCoords.Length/2)
throw new Exception("Vertices.Length!=TextureCoords.Length");
int c = Vertices.Length / 3;
VertexP3T2[] data = new VertexP3T2[Vertices.Length];
for (int i = 0; i < c; ++i)
{
data[i].position = new Vector3(Vertices[i*3],Vertices[i*3+1],Vertices[i*3+2]);
data[i].texture0 = new Vector2(TextureCoords[i*2],TextureCoords[i*2+1]);
}
VertexBuffer = Root.Instance.UserInterface.Renderer.CreateStaticVertexBuffer(data, Vertices.Length * VertexFormat.VF_P3T2.Size);
VertexBuffer.Format = VertexFormat.VF_P3T2;
IndexBuffer = new IndexBuffer();
IndexBuffer.buffer = new int[MeshIndices.Length];
for (int i = 0; i < MeshIndices.Length; ++i)
IndexBuffer.buffer[i] = (int)MeshIndices[i];
}
