public static Mesh ToVpMesh(this UnityEngine.Mesh unityMesh)
{
var vpMesh = new Mesh(unityMesh.name)
{
Vertices = new Vertex3DNoTex2[unityMesh.vertexCount]
};
var unityVertices = unityMesh.vertices;
var unityNormals = unityMesh.normals;
for (var i = 0; i < vpMesh.Vertices.Length; i++)
{
var unityVertex = unityVertices[i];
var unityNormal = unityNormals[i];
var unityUv = unityMesh.uv[i];
vpMesh.Vertices[i] = new Vertex3DNoTex2(
unityVertex.x, unityVertex.y, unityVertex.z,
unityNormal.x, unityNormal.y, unityNormal.z,
unityUv.x, -unityUv.y);
}
vpMesh.Indices = unityMesh.triangles;
if (unityMesh.blendShapeCount > 0)
{
var animationIndex = unityMesh.GetBlendShapeIndex(AnimationShape);
// use the first blendshape if none with default name
if (animationIndex < 0)
{
animationIndex = 0;
}
var deltaVertices = new Vector3[unityMesh.vertexCount];
var deltaNormals = new Vector3[unityMesh.vertexCount];
var frameCount = unityMesh.GetBlendShapeFrameCount(animationIndex);
for (var i = 0; i < frameCount; i++)
{
unityMesh.GetBlendShapeFrameVertices(animationIndex, i, deltaVertices, deltaNormals, null);
var frameData = new Mesh.VertData[unityMesh.vertexCount];
for (var j = 0; j < unityMesh.vertexCount; j++)
{
var vertex = deltaVertices[j] + unityVertices[j];
var normal = deltaNormals[j] + unityNormals[j];
frameData[j] = new Mesh.VertData(
vertex.x, vertex.y, vertex.z,
normal.x, normal.y, normal.z);
}
vpMesh.AnimationFrames.Add(frameData);
}
}
return(vpMesh);
}
public static Vector3 ToUnityNormalVector3(this Mesh.VertData vpVert)
{
return(new Vector3(vpVert.Nx, vpVert.Ny, vpVert.Nz));
}
public static Vector3 ToUnityVector3(this Mesh.VertData vpVert)
{
return(new Vector3(vpVert.X, vpVert.Y, vpVert.Z));
}