Matrix3D Matrix3D::_CreateTranslateAlongWorldForward(double fAmt) {
Matrix3D result;
result._SetIdentityMatrix();
// Camera space points down negative Z axis
result._POSITION_Z = -fAmt;
return result;
}
Matrix3D Matrix3D::_CreateRotationAroundWorldForwardVector(double fAmt) {
Matrix3D result;
result._SetIdentityMatrix();
result.r0c0 = cos(fAmt);
result.r0c1 = -sin(fAmt);
result.r1c0 = sin(fAmt);
result.r1c1 = cos(fAmt);
return result;
}
Matrix3D Matrix3D::_CreateRotationAroundWorldRightVector(double fAmt) {
Matrix3D result;
result._SetIdentityMatrix();
result.r1c1 = cos(fAmt);
result.r1c2 = -sin(fAmt);
result.r2c1 = sin(fAmt);
result.r2c2 = cos(fAmt);
return result;
}
Matrix3D Matrix3D::_CreateRotationAroundWorldUpVector(double fAmt) {
Matrix3D result;
result._SetIdentityMatrix();
result.r0c0 = cos(fAmt);
result.r0c2 = sin(fAmt);
result.r2c0 = -sin(fAmt);
result.r2c2 = cos(fAmt);
return result;
}
Matrix3D Matrix3D::_CreateTranslateAlongWorldRight(double fAmt) {
Matrix3D result;
result._SetIdentityMatrix();
result._POSITION_X = fAmt;
return result;
}