/**
* Gets the result of adding a matrix to this.
*
* @param Other The Matrix to add.
* @return The result of addition.
*/
public static FMatrix operator+(FMatrix This, FMatrix Other)
{
FMatrix ResultMat = new FMatrix();
for (int X = 0; X < 4; X++)
{
for (int Y = 0; Y < 4; Y++)
{
ResultMat[X, Y] = This[X, Y] + Other[X, Y];
}
}
return(ResultMat);
}
/**
* This isn't applying SCALE, just multiplying float to all members - i.e. weighting
*/
public static FMatrix operator*(FMatrix This, float Other)
{
FMatrix ResultMat = new FMatrix();
for (int X = 0; X < 4; X++)
{
for (int Y = 0; Y < 4; Y++)
{
ResultMat[X, Y] = This[X, Y] * Other;
}
}
return(ResultMat);
}
/**
* Checks whether another Matrix is equal to this, within specified tolerance.
*
* @param Other The other Matrix.
* @param Tolerance Error Tolerance.
* @return true if two Matrix are equal, within specified tolerance, otherwise false.
*/
public override bool Equals(object Obj)
{
FMatrix Other = (FMatrix)Obj;
float Tolerance = Const.KINDA_SMALL_NUMBER;
for (int X = 0; X < 4; X++)
{
for (int Y = 0; Y < 4; Y++)
{
if (FMath.Abs(this[X, Y] - Other[X, Y]) > Tolerance)
{
return(false);
}
}
}
return(true);
}
public void SetFromMatrix(FMatrix InMatrix)
{
FMatrix M = InMatrix;
// Get the 3D scale from the matrix
Scale3D = M.ExtractScaling();
// If there is negative scaling going on, we handle that here
if (InMatrix.Determinant() < 0.0f)
{
// Assume it is along X and modify transform accordingly.
// It doesn't actually matter which axis we choose, the 'appearance' will be the same
Scale3D.X *= -1.0f;
M.SetAxis(0, -M.GetScaledAxis(EAxis.X));
}
Rotation = new FQuat(M);
Translation = InMatrix.GetOrigin();
// Normalize rotation
Rotation.Normalize();
}
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static FMatrix TransposeAdjoint(ref FMatrix This);
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static FMatrix Inverse(ref FMatrix This);
/**
* Transform a direction vector by the inverse of this matrix - will not take into account translation part.
* If you want to transform a surface normal (or plane) and correctly account for non-uniform scaling you should use TransformByUsingAdjointT with adjoint of matrix inverse.
*/
public FVector InverseTransformVector(FVector V)
{
FMatrix InvSelf = this.InverseFast();
return(InvSelf.TransformVector(V));
}
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static FVector4 TransformFVector4(ref FMatrix This, ref FVector4 V);
public void SetFromMatrix(FMatrix inMatrix) => E_FTransform_SetFromMatrix(this, inMatrix);
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static FRotator Rotator(ref FMatrix This);
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static FMatrix ConcatTranslation(ref FMatrix This, ref FVector Translation);
public FQuat(FMatrix M)
{
this = MakeFromMatrix(M);
}
public static FQuat MakeFromMatrix(FMatrix Matrix)
{
return(MakeFromMatrix(ref Matrix));
}
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static FQuat MakeFromMatrix(ref FMatrix Matrix);
/// <summary>
/// Constructor
/// </summary>
/// <param name="srcProjMat">source projection matrix to premultiply with the clip matrix</param>
/// <param name="plane">clipping plane used to build the clip matrix (assumed to be in camera space)</param>
public FClipProjectionMatrix(FMatrix srcProjMat, FPlane plane) :
base(E_CreateStruct_FClipProjectionMatrix_FMatrix_FPlane(srcProjMat, plane), false)
{
}
/// <summary>
/// Constructor for converting a Matrix (including scale) into a FTransform.
/// </summary>
public FTransform(FMatrix inMatrix) :
base(E_CreateStruct_FTransform_FMatrix(inMatrix), false)
{
}
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static void RemoveScaling(ref FMatrix This, float Tolerance);
public FInstancedStaticMeshInstanceData(FMatrix inTransform) :
base(E_CreateStruct_FInstancedStaticMeshInstanceData_FMatrix(inTransform), false)
{
}
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static FVector ExtractScaling(ref FMatrix This, float Tolerance);
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static void Mirror(ref FMatrix This, int MirrorAxis, int FlipAxis);
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static FMatrix ApplyScale(ref FMatrix This, float Scale);
static extern bool GetFrustumTopPlane(ref FMatrix This, out FPlane OutPlane);
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static bool GetFrustumBottomPlane(ref FMatrix This, out FPlane OutPlane);
/// <summary>
/// Creates and initializes a new quaternion from the given matrix.
/// </summary>
/// <param name="m">The rotation matrix to initialize from.</param>
public FQuat(FMatrix m) :
base(E_CreateStruct_FQuat_FMatrix(m), false)
{
}
//[MethodImplAttribute(MethodImplOptions.InternalCall)] extern static FMatrix Multiply(ref FMatrix This, ref FMatrix Other);
static extern FMatrix InverseFast(ref FMatrix This);
