bool updateBrushAndCursorByIntersection (const ViewPointingEvent& e, bool useRecentOctree) {
WingedFaceIntersection intersection;
if (this->self->intersectsScene (e, intersection)) {
this->cursor.enable ();
this->cursor.position (intersection.position ());
if (e.primaryButton ()) {
this->brush.mesh (&intersection.mesh ());
if (useRecentOctree) {
Intersection octreeIntersection;
if (this->self->intersectsRecentOctree (e, octreeIntersection)) {
return this->brush.updatePointOfAction ( octreeIntersection.position ()
, octreeIntersection.normal () );
}
else {
return this->brush.updatePointOfAction ( intersection.position ()
, intersection.normal () );
}
}
else {
return this->brush.updatePointOfAction ( intersection.position ()
, intersection.normal () );
}
}
else {
return false;
}
}
else {
this->cursor.disable ();
return false;
}
}
void mousePressEvent (State& state, const QMouseEvent& event) {
if (event.button () == Qt::MiddleButton) {
this->oldPos = ViewUtil::toIVec2 (event);
if (event.modifiers () == Qt::ControlModifier) {
Camera& cam = state.camera ();
WingedFaceIntersection intersection;
if (state.scene ().intersects (cam.ray (ViewUtil::toIVec2 (event)), intersection)) {
cam.set ( intersection.position ()
, cam.position () - intersection.position ()
, cam.up () );
state.mainWindow ().mainWidget ().glWidget ().update ();
}
}
}
}
void updateCursorByIntersection (const ViewPointingEvent& e) {
WingedFaceIntersection intersection;
if (this->self->intersectsScene (e, intersection)) {
this->cursor.enable ();
this->cursor.position (intersection.position ());
}
else {
this->cursor.disable ();
}
}
bool initializeDraglikeStroke (const ViewPointingEvent& e, ToolUtilMovement& movement) {
if (e.primaryButton ()) {
WingedFaceIntersection intersection;
if (this->self->intersectsScene (e, intersection)) {
this->brush.mesh (&intersection.mesh ());
this->brush.setPointOfAction (intersection.position (), intersection.normal ());
this->cursor.disable ();
movement.resetPosition (intersection.position ());
return true;
}
else {
this->cursor.enable ();
this->brush.resetPointOfAction ();
return false;
}
}
else {
this->cursor.enable ();
this->brush.resetPointOfAction ();
return false;
}
}
void setupCursor () {
assert (this->brush.radius () > 0.0f);
WingedFaceIntersection intersection;
if (this->self->intersectsScene (this->self->cursorPosition (), intersection)) {
this->cursor.enable ();
this->cursor.position (intersection.position ());
}
else {
this->cursor.disable ();
}
this->cursor.radius (this->brush.radius ());
this->self->runSetupCursor (this->cursor);
}