public void PopMatrix(EMatrix matrix)
{
if (_si[( int )matrix] > 0)
{
--_si[( int )matrix];
}
SetFlags(matrix);
}
public void PushMatrix(EMatrix matrix)
{
if (_si[( int )matrix] < StackDepth - 1)
{
++_si[( int )matrix];
_stacks[( int )matrix][_si[( int )matrix]] =
_stacks[( int )matrix][_si[( int )matrix - 1]];
}
}
private void SetFlags(EMatrix matrix)
{
switch (matrix)
{
case EMatrix.World:
_matWorldF = true;
_matWorldInverseTransposeF = true;
_matWorldViewProjectionF = true;
break;
case EMatrix.View:
_matWorldViewProjectionF = true;
_matViewProjectionF = true;
_matViewF = true;
break;
case EMatrix.Projection:
_matWorldViewProjectionF = true;
_matViewProjectionF = true;
_matProjectionF = true;
break;
}
}
public Matrix GetMatrix(EMatrix matrix)
{
return(_stacks[( int )matrix][_si[( int )matrix]]);
}
public void MultMatrix(EMatrix matrix, Matrix mat)
{
_stacks[( int )matrix][_si[( int )matrix]] = mat * _stacks[( int )matrix][_si[( int )matrix]];
SetFlags(matrix);
}
public void LoadMatrix(EMatrix matrix, Matrix mat)
{
_stacks[( int )matrix][_si[( int )matrix]] = mat;
SetFlags(matrix);
}
public void LoadIdentity(EMatrix matrix)
{
_stacks[( int )matrix][_si[( int )matrix]] = Matrix.Identity;
SetFlags(matrix);
}
