internal static ThreeMfMesh ParseMesh(XElement element, Dictionary <int, ThreeMfResource> resourceMap)
{
if (element == null)
{
throw new ThreeMfParseException("Missing element <mesh>.");
}
var vertices = new List <ThreeMfVertex>();
foreach (var vertexElement in element.Element(VerticesName).Elements(ThreeMfVertex.VertexName))
{
var vertex = ThreeMfVertex.ParseVertex(vertexElement);
vertices.Add(vertex);
}
var mesh = new ThreeMfMesh();
foreach (var triangleElement in element.Element(TrianglesName).Elements(ThreeMfTriangle.TriangleName))
{
var triangle = ThreeMfTriangle.ParseTriangle(triangleElement, vertices, resourceMap);
mesh.Triangles.Add(triangle);
}
return(mesh);
}
public ThreeMfTriangle(ThreeMfVertex v1, ThreeMfVertex v2, ThreeMfVertex v3)
{
V1 = v1;
V2 = v2;
V3 = v3;
PropertyResource = null;
V1PropertyIndex = null;
V2PropertyIndex = null;
V3PropertyIndex = null;
}
public ThreeMfVertex Transform(ThreeMfVertex v)
{
// [ M00 M01 M02 0.0 ]
// [ v.X v.Y v.Z 1.0 ] * [ M10 M11 M12 0.0 ]
// [ M20 M21 M22 0.0 ]
// [ M30 M31 M32 1.0 ]
var x = v.X * M00 + v.Y * M10 + v.Z * M20 + M30;
var y = v.Y * M01 + v.Y * M11 + v.Z * M21 + M31;
var z = v.Z * M02 + v.Y * M12 + v.Z * M22 + M32;
return(new ThreeMfVertex(x, y, z));
}