public Hatzap.Models.Mesh FromAssimp(Assimp.Mesh amesh)
{
var mesh = new Hatzap.Models.Mesh();
var v = amesh.Vertices;
var n = amesh.Normals;
var t = amesh.Tangents;
var b = amesh.BiTangents;
var tc = amesh.TextureCoordinateChannels;
var c = amesh.VertexColorChannels;
var verts = new Vector3[v.Count];
Vector3[] norms;
Vector3[] tangents;
Vector3[] binormals;
Vector3[][] uv;
Vector4[][] colors;
if (amesh.HasNormals) norms = new Vector3[v.Count]; else norms = null;
if (amesh.HasTangentBasis) tangents = new Vector3[v.Count]; else tangents = null;
if (amesh.HasTangentBasis) binormals = new Vector3[v.Count]; else binormals = null;
if (amesh.HasTextureCoords(0))
{
uv = new Vector3[amesh.TextureCoordinateChannelCount][];
for(int i = 0; i < amesh.TextureCoordinateChannelCount; i++)
{
uv[i] = new Vector3[v.Count];
}
}
else
{
uv = null;
}
if (amesh.HasVertexColors(0))
{
colors = new Vector4[amesh.VertexColorChannelCount][];
for (int i = 0; i < amesh.VertexColorChannelCount; i++)
{
colors[i] = new Vector4[v.Count];
}
}
else
{
colors = new Vector4[1][];
colors[0] = new Vector4[v.Count];
}
for (int i = 0; i < v.Count; i++)
{
verts[i] = new Vector3(v[i].X, v[i].Y, v[i].Z);
if (norms != null) norms[i] = new Vector3(n[i].X, n[i].Y, n[i].Z);
if (tangents != null) tangents[i] = new Vector3(t[i].X, t[i].Y, t[i].Z);
if (binormals != null) binormals[i] = new Vector3(b[i].X, b[i].Y, b[i].Z);
if (uv != null)
{
for(int j = 0; j < amesh.TextureCoordinateChannelCount; j++)
{
uv[j][i] = new Vector3(tc[j][i].X, tc[j][i].Y, tc[j][i].Z);
}
}
if (colors != null)
{
if (amesh.HasVertexColors(0))
{
for (int j = 0; j < amesh.VertexColorChannelCount; j++)
{
colors[j][i] = new Vector4(c[j][i].R, c[j][i].G, c[j][i].B, c[j][i].A);
}
}
else
{
colors[0][i] = new Vector4(1, 1, 1, 1);
}
}
}
mesh.Vertices = verts;
mesh.Normals = norms;
mesh.Tangents = tangents;
mesh.Binormals = binormals;
mesh.UV = uv;
mesh.Colors = colors;
var aindices = amesh.GetIndices();
var indices = new uint[aindices.Length];
for (int i = 0; i < aindices.Length; i++)
{
indices[i] = (uint)aindices[i];
}
mesh.Indices = indices;
return mesh;
}