internal static Mesh ExtractRegionAttachment (string name, RegionAttachment attachment, Mesh mesh = null, bool centered = true) {
var bone = GetDummyBone();
if (centered) {
bone.X = -attachment.X;
bone.Y = -attachment.Y;
}
bone.UpdateWorldTransform();
Vector2[] uvs = ExtractUV(attachment.UVs);
float[] floatVerts = new float[8];
attachment.ComputeWorldVertices(bone, floatVerts, 0);
Vector3[] verts = ExtractVerts(floatVerts);
//unrotate verts now that they're centered
if (centered) {
for (int i = 0; i < verts.Length; i++)
verts[i] = Quaternion.Euler(0, 0, -attachment.Rotation) * verts[i];
}
int[] triangles = { 1, 3, 0, 2, 3, 1 };
Color color = attachment.GetColor();
if (mesh == null)
mesh = new Mesh();
mesh.triangles = new int[0];
mesh.vertices = verts;
mesh.uv = uvs;
mesh.triangles = triangles;
mesh.colors = new [] { color, color, color, color };
mesh.RecalculateBounds();
mesh.RecalculateNormals();
mesh.name = name;
return mesh;
}
