public static OpenTK.Matrix3 ToGL(this Assimp.Matrix3x3 matrix)
{
var m = matrix;
m.Transpose();
return(new OpenTK.Matrix3(m.A1, m.A2, m.A3, m.B1, m.B2, m.B3, m.C1, m.C2, m.C3));
}
private static Matrix toDXMat(Assimp.Matrix3x3 mat)
{
//scaling is
//M11, M22, M33
//translation is
//M41, M42, M43
Matrix m = new Matrix();
m.M11 = mat.A1;
m.M12 = mat.A2;
m.M13 = mat.A3;
//m.M14 = 1;// mat.A4;
m.M21 = mat.B1;
m.M22 = mat.B2;
m.M23 = mat.B3;
// m.M24 = 1;// mat.B4;
m.M31 = mat.C1;
m.M32 = mat.C2;
m.M33 = mat.C3;
// m.M34 = 1;// mat.C4;
/// m.M41 = 1;// mat.D1;
//m.M42 = 1;//mat.D2;
// m.M43 = 1;//mat.D3;
// m.M44 = 1;//mat.D4;
if (m.M11 == 0)
{
m.M11 = 1;
}
if (m.M22 == 0)
{
m.M22 = 1;
}
if (m.M33 == 0)
{
m.M33 = 1;
}
return(m);
}
/// <summary>
/// Get an Assimp matrix for the mesh of a rendermesh.
/// This is an approximation of the logic applied by the
/// game to scaling the model using the assigned node.
/// </summary>
public static Assimp.Matrix4x4 getMatForMesh(RenderModel model, Mesh mesh)
{
var rot_mat = Assimp.Matrix3x3.Identity;
int node_idx = mesh.RigidNodeIndex;
if (node_idx < 0) {
node_idx = 0;
}
if (node_idx < model.Nodes.Count)
{
float s = model.Nodes[node_idx].DefaultScale;
RenderModel.Node node = model.Nodes[node_idx];
rot_mat = new Assimp.Matrix3x3(node.InverseForward.X *s , node.InverseForward.Y * s, node.InverseForward.Z*s,
node.InverseLeft.X*s, node.InverseLeft.Y*s, node.InverseLeft.Z*s,
node.InverseUp.X*s, node.InverseUp.Y*s, node.InverseUp.Z*s);
//Console.WriteLine("Loaded matrix: {0}", rot_mat);
}
var matrix_local = new Assimp.Matrix4x4(rot_mat);
return matrix_local;
}
public static LDDModder.Simple3D.Matrix3 ToLDD(this Assimp.Matrix3x3 matrix)
{
return(ToLDD(matrix.ToGL()));
}
