Dvoid Camera::ViewMatrixCalculate()
{
Matrix33 rotate;
rotate.SetColumns(m_vDir[CD_RIGHT], m_vDir[CD_UP], -m_vDir[CD_FRONT]);
rotate.Transpose();
m_matCam[CM_VIEW].Rotation(rotate);
// set translation (rotate into view space)
Vector3 invEye = -(rotate* m_vPos);
m_matCam[CM_VIEW](0, 3) = invEye.x;
m_matCam[CM_VIEW](1, 3) = invEye.y;
m_matCam[CM_VIEW](2, 3) = invEye.z;
}
//world -> view
Matrix44 TransformHelper::CreateView(const Vector3& eye, const Vector3& lookAt, const Vector3& up)
{
// compute view vectors
Vector3 view = lookAt - eye;
Vector3 right;
Vector3 viewUp;
view.Normalize();
right = view.Cross(up);
right.Normalize();
viewUp = right.Cross(view);
viewUp.Normalize();
// now set up matrices
// base rotation matrix
Matrix33 rotate;
rotate.SetColumns(right, viewUp, -view);
// view->world transform
// set rotation
//Matrix44 mViewToWorldMatrix;
//mViewToWorldMatrix.Rotation(rotate);
//// set translation (eye position)
//mViewToWorldMatrix(0, 3) = eye.x;
//mViewToWorldMatrix(1, 3) = eye.y;
//mViewToWorldMatrix(2, 3) = eye.z;
// world->view transform
// set rotation
Matrix44 mWorldToViewMatrix;
rotate.Transpose();
mWorldToViewMatrix.Rotation(rotate);
// set translation (rotate into view space)
Vector3 invEye = -(rotate*eye);
mWorldToViewMatrix(0, 3) = invEye.x;
mWorldToViewMatrix(1, 3) = invEye.y;
mWorldToViewMatrix(2, 3) = invEye.z;
return mWorldToViewMatrix;
}
