public MeshData GenerateMeshData(CnkLOD cnkData)
{
MeshData meshData = new MeshData();
uint vertCount = 0;
for (int i = 0; i < 4; i++)
{
CnkLOD.RenderBatch renderBatch = cnkData.RenderBatches[i];
vertCount += renderBatch.VertexCount;
}
meshData.verts = new Vector3[vertCount];
meshData.uvs = new Vector2[vertCount];
// Verts and UVs
uint offset = 0;
for (int i = 0; i < 4; i++)
{
CnkLOD.RenderBatch renderBatch = cnkData.RenderBatches[i];
CalculateVertsAndUVs(offset, cnkData, renderBatch, i, meshData.verts, meshData.uvs);
offset += renderBatch.VertexCount;
}
meshData.triangles = new int[4][];
// Triangles
for (int i = 0; i < 4; i++)
{
CnkLOD.RenderBatch renderBatch = cnkData.RenderBatches[i];
meshData.triangles[i] = GetRenderBatchTriangles(cnkData, renderBatch);
}
return(meshData);
}
private int[] GetRenderBatchTriangles(CnkLOD cnkData, CnkLOD.RenderBatch renderBatch)
{
int[] indices = new int[renderBatch.IndexCount];
for (int i = 0; i < renderBatch.IndexCount; i++)
{
indices[renderBatch.IndexCount - 1 - i] = Convert.ToInt32(cnkData.Indices[i + (int)renderBatch.IndexOffset] + renderBatch.VertexOffset);
}
return(indices);
}
private void CalculateVertsAndUVs(uint offset, CnkLOD cnkData, CnkLOD.RenderBatch renderBatch, int index, Vector3[] verts, Vector2[] uvs)
{
for (int i = 0; i < renderBatch.VertexCount; i++)
{
int k = (int)(renderBatch.VertexOffset + i);
double x = cnkData.Vertices[k].X + (index >> 1) * 64;
double y = cnkData.Vertices[k].Y + (index % 2) * 64;
double heightNear = (double)cnkData.Vertices[k].HeightNear / 64;
verts[offset + i] = new Vector3((float)x, (float)heightNear, (float)y);
uvs[offset + i] = new Vector2((float)y / 128, 1 - (float)x / 128);
}
}