public static MeshSimplifier VoxelsToMesh(VoxelSet <Vec4b> voxels)
{
MeshSimplifier ms = VoxelsToMeshFull(voxels);
Console.WriteLine("Triangles before reduction: " + (ms.Edges.Length / 3));
ms.Simplify();
ms.Compact();
Console.WriteLine("Triangles after reduction: " + (ms.Edges.Length / 3));
return(ms);
}
public static MeshSimplifier VoxelsToMeshFull(VoxelSet <Vec4b> voxels)
{
var quads = VoxelsToQuads(voxels);
Vec3f[] positions = new Vec3f[quads.Count * 4];
Vec3f[] normals = new Vec3f[quads.Count * 4];
int[] tris = new int[quads.Count * 6];
Dictionary <Vec3b, int> posRemap = new Dictionary <Vec3b, int>();
int idx = 0;
foreach (var q in quads)
{
for (int i = 0; i < 4; ++i)
{
normals[idx * 4 + i] = q.normal;
}
positions[idx * 4 + 0] = q.offset;
positions[idx * 4 + 1] = q.offset + q.dx;
positions[idx * 4 + 2] = q.offset + q.dx + q.dy;
positions[idx * 4 + 3] = q.offset + q.dy;
int[] posIndices = new int[4];
for (int i = 0; i < 4; ++i)
{
Vec3b posKey = new Vec3b(positions[idx * 4 + i]);
if (!posRemap.ContainsKey(posKey))
{
posRemap[posKey] = idx * 4 + i;
}
posIndices[i] = posRemap[posKey];
}
tris[idx * 6 + 0] = posIndices[0];
tris[idx * 6 + 1] = posIndices[1];
tris[idx * 6 + 2] = posIndices[2];
tris[idx * 6 + 3] = posIndices[0];
tris[idx * 6 + 4] = posIndices[2];
tris[idx * 6 + 5] = posIndices[3];
idx++;
}
MeshSimplifier ms = new MeshSimplifier(positions, tris);
return(ms);
}