public static Vector3 GetColumn(this GLTF.Math.Matrix4x4 mat, uint columnNum)
{
switch (columnNum)
{
case 0:
{
return(new Vector3(mat.M11, mat.M21, mat.M31));
}
case 1:
{
return(new Vector3(mat.M12, mat.M22, mat.M32));
}
case 2:
{
return(new Vector3(mat.M13, mat.M23, mat.M33));
}
case 3:
{
return(new Vector3(mat.M14, mat.M24, mat.M34));
}
default:
throw new System.Exception("column num is out of bounds");
}
}
/// <summary>
/// Convert gltf matrix to a unity matrix
/// </summary>
/// <param name="unityMat">unity matrix</param>
/// <returns>gltf matrix</returns>
public static GLTF.Math.Matrix4x4 ToGltfMatrix4x4Convert(this Matrix4x4 unityMat)
{
Vector3 coordinateSpaceConversionScale = CoordinateSpaceConversionScale.ToUnityVector3Raw();
Matrix4x4 convert = Matrix4x4.Scale(coordinateSpaceConversionScale);
GLTF.Math.Matrix4x4 gltfMat = (convert * unityMat * convert).ToGltfMatrix4x4Raw();
return(gltfMat);
}
public static GLTF.Math.Matrix4x4 ToGltfMatrix4x4Raw(this Matrix4x4 unityMat)
{
GLTF.Math.Vector4 c0 = unityMat.GetColumn(0).ToGltfVector4Raw();
GLTF.Math.Vector4 c1 = unityMat.GetColumn(1).ToGltfVector4Raw();
GLTF.Math.Vector4 c2 = unityMat.GetColumn(2).ToGltfVector4Raw();
GLTF.Math.Vector4 c3 = unityMat.GetColumn(3).ToGltfVector4Raw();
GLTF.Math.Matrix4x4 rawGltfMat = new GLTF.Math.Matrix4x4(c0.X, c0.Y, c0.Z, c0.W, c1.X, c1.Y, c1.Z, c1.W, c2.X, c2.Y, c2.Z, c2.W, c3.X, c3.Y, c3.Z, c3.W);
return(rawGltfMat);
}
/// <summary>
/// Convert gltf matrix to a unity matrix
/// </summary>
/// <param name="gltfMat">gltf matrix</param>
/// <returns>unity matrix</returns>
public static Matrix4x4 ToUnityMatrix4x4Convert(this GLTF.Math.Matrix4x4 gltfMat)
{
Matrix4x4 rawUnityMat = gltfMat.ToUnityMatrix4x4Raw();
Vector3 coordinateSpaceConversionScale = CoordinateSpaceConversionScale.ToUnityVector3Raw();
Matrix4x4 convert = Matrix4x4.Scale(coordinateSpaceConversionScale);
Matrix4x4 unityMat = convert * rawUnityMat * convert;
return(unityMat);
}
public static Matrix4x4 ToUnityMatrix(this GLTF.Math.Matrix4x4 matrix)
{
Matrix4x4 mat = new Matrix4x4();
mat.SetColumn(0, matrix.GetColumn(0));
mat.SetColumn(1, matrix.GetColumn(1));
mat.SetColumn(2, matrix.GetColumn(2));
mat.SetColumn(3, matrix.GetColumn(3));
return(mat);
}
// todo: move to utility class
public static void GetTRSProperties(GLTF.Math.Matrix4x4 mat, out Vector3 position, out Quaternion rotation,
out Vector3 scale)
{
position = mat.GetColumn(3);
scale = new Vector3(
mat.GetColumn(0).magnitude,
mat.GetColumn(1).magnitude,
mat.GetColumn(2).magnitude
);
rotation = Quaternion.LookRotation(mat.GetColumn(2), mat.GetColumn(1));
}
public static Matrix4x4 ToUnityMatrix4x4Raw(this GLTF.Math.Matrix4x4 gltfMat)
{
Vector4 rawUnityCol0 = gltfMat.GetColumn(0).ToUnityVector4Raw();
Vector4 rawUnityCol1 = gltfMat.GetColumn(1).ToUnityVector4Raw();
Vector4 rawUnityCol2 = gltfMat.GetColumn(2).ToUnityVector4Raw();
Vector4 rawUnityCol3 = gltfMat.GetColumn(3).ToUnityVector4Raw();
Matrix4x4 rawUnityMat = new UnityEngine.Matrix4x4();
rawUnityMat.SetColumn(0, rawUnityCol0);
rawUnityMat.SetColumn(1, rawUnityCol1);
rawUnityMat.SetColumn(2, rawUnityCol2);
rawUnityMat.SetColumn(3, rawUnityCol3);
return(rawUnityMat);
}
public static Matrix4x4 ToUnityMatrix4x4(this GLTF.Math.Matrix4x4 matrix)
{
return(new Matrix4x4()
{
m00 = matrix.M11,
m01 = matrix.M12,
m02 = matrix.M13,
m03 = matrix.M14,
m10 = matrix.M21,
m11 = matrix.M22,
m12 = matrix.M23,
m13 = matrix.M24,
m20 = matrix.M31,
m21 = matrix.M32,
m22 = matrix.M33,
m23 = matrix.M34,
m30 = matrix.M41,
m31 = matrix.M42,
m32 = matrix.M43,
m33 = matrix.M44
});
}
/// <summary>
/// Get converted unity translation, rotation, and scale from a gltf matrix
/// </summary>
/// <param name="gltfMat">gltf matrix to get and convert properties from</param>
/// <param name="position">unity translation vector</param>
/// <param name="rotation">unity rotation quaternion</param>
/// <param name="scale">unity scale vector</param>
public static void GetTRSProperties(this GLTF.Math.Matrix4x4 gltfMat, out Vector3 position, out Quaternion rotation,
out Vector3 scale)
{
gltfMat.ToUnityMatrix4x4Convert().GetTRSProperties(out position, out rotation, out scale);
}
/// <summary>
/// Convert gltf matrix to a unity matrix
/// </summary>
/// <param name="gltfMat">gltf matrix</param>
/// <returns>unity matrix</returns>
public static Matrix4x4 ToUnityMatrix4x4Convert(this GLTF.Math.Matrix4x4 gltfMat)
{
return(gltfMat.ToUnityMatrix4x4Raw().UnityMatrix4x4ConvertFromGLTF());
}