CubicClipVolume calculateCubicClipVolume( const Matrix4& viewproj ){
CubicClipVolume clip;
clip.cam = vector4_projected(
matrix4_transformed_vector4(
matrix4_full_inverse( viewproj ),
Vector4( 0, 0, -1, 1 )
)
);
clip.min[0] = clip.cam[0] + ( portals.clip_range * 64.0f );
clip.min[1] = clip.cam[1] + ( portals.clip_range * 64.0f );
clip.min[2] = clip.cam[2] + ( portals.clip_range * 64.0f );
clip.max[0] = clip.cam[0] - ( portals.clip_range * 64.0f );
clip.max[1] = clip.cam[1] - ( portals.clip_range * 64.0f );
clip.max[2] = clip.cam[2] - ( portals.clip_range * 64.0f );
return clip;
}
/* greebo: This is called by the ManipulateObserver class on the mouseDown event. It checks, if a manipulator
* can be selected where the mouse is pointing to.
*/
bool RadiantSelectionSystem::SelectManipulator(const View& view, const float device_point[2], const float device_epsilon[2]) {
if (!nothingSelected() || (ManipulatorMode() == eDrag && Mode() == eComponent)) {
#if defined (DEBUG_SELECTION)
g_render_clipped.destroy();
#endif
// Unselect any currently selected manipulators to be sure
_manipulator->setSelected(false);
// Test, if the current manipulator can be selected
if (!nothingSelected() || (ManipulatorMode() == eDrag && Mode() == eComponent)) {
View scissored(view);
ConstructSelectionTest(scissored, SelectionBoxForPoint(device_point, device_epsilon));
// The manipulator class checks on its own, if any of its components can be selected
_manipulator->testSelect(scissored, GetPivot2World());
}
// Save the pivot2world matrix
startMove();
// This is true, if a manipulator could be selected
_pivotMoving = _manipulator->isSelected();
// is a manipulator selected / the pivot moving?
if (_pivotMoving) {
Pivot2World pivot;
pivot.update(GetPivot2World(), view.GetModelview(), view.GetProjection(), view.GetViewport());
_manip2pivotStart = matrix4_multiplied_by_matrix4(matrix4_full_inverse(_pivot2worldStart), pivot.m_worldSpace);
Matrix4 device2manip;
ConstructDevice2Manip(device2manip, _pivot2worldStart, view.GetModelview(), view.GetProjection(), view.GetViewport());
_manipulator->GetManipulatable()->Construct(device2manip, device_point[0], device_point[1]);
_undoBegun = false;
}
SceneChangeNotify();
}
return _pivotMoving;
}
