public void PositionCamera()
{
if (m_bResetClippingPlanes)
{
// Reset our cameras clipping plane
ResetView(0, 0);
m_bResetClippingPlanes = false;
}
if (m_fRoll != 0)
{
msgMatrix matx = new msgMatrix();
msgVectorStruct UpVector;
matx.Rotate(zero_p, x_axe, m_fPitch / 180.0 * Math.PI);
matx.Rotate(zero_p, y_axe, m_fRoll / 180.0 * Math.PI);
matx.Rotate(zero_p, z_axe, -m_fYaw / 180.0 * Math.PI);
UpVector = z_axe;
matx.ApplyMatrixToVector(zero_p, UpVector);
// Position the camera using the newly calculated 'Up' vector
OpenGLControl.gluLookAt(m_fEyePos.x, m_fEyePos.y, m_fEyePos.z,
m_fLookAtPos.x, m_fLookAtPos.y, m_fLookAtPos.z,
UpVector.x, UpVector.y, UpVector.z);
}
else
{
// Since our 'Up' vector has already been calculated, all we need to do is
// position the camera..
OpenGLControl.gluLookAt(m_fEyePos.x, m_fEyePos.y, m_fEyePos.z,
m_fLookAtPos.x, m_fLookAtPos.y, m_fLookAtPos.z,
m_fUpVector.x, m_fUpVector.y, m_fUpVector.z);
}
// Save the Model view matrix. This is used later for
// conversion of mouse coordinates to world coordinates.
OpenGLControl.glGetDoublev(OpenGLControl.GL_MODELVIEW_MATRIX, m_dModelViewMatrix);
}