void snap(Matrix& m) {
if (csys) C = csys->getWorldMatrix();
if (orientation == POINT) {
MatrixLookAt(m, snapP, snapP+Vec3f(prim_o.getPosition()), prim_o.getDirection());
m.multLeft(C);
}
}
Vec3f local(Vec3f p) {
if (csys) {
C = csys->getWorldMatrix();
C.invert();
Pnt3f pL;
C.mult(p,pL);
return Vec3f(pL);
} else return p;
}
void VRSnappingEngine::update() {
for (auto dev : VRSetupManager::getCurrent()->getDevices()) { // get dragged objects
VRTransform* obj = dev.second->getDraggedObject();
VRTransform* gobj = dev.second->getDraggedGhost();
if (obj == 0 || gobj == 0) continue;
if (objects.count(obj) == 0) continue;
Matrix m = gobj->getWorldMatrix();
Vec3f p = Vec3f(m[3]);
for (auto ri : rules) {
Rule* r = ri.second;
if (r->csys == obj) continue;
if (anchors.count(obj)) {
for (auto a : anchors[obj]) {
Matrix maL = a->getMatrix();
Matrix maW = m; maW.mult(maL);
Vec3f pa = Vec3f(maW[3]);
Vec3f paL = r->local( Vec3f(maW[3]) );
Vec3f psnap = r->getSnapPoint(pa);
float D = (psnap-paL).length(); // check distance
//cout << "dist " << D << " " << pa[1] << " " << paL[1] << " " << psnap[1] << endl;
if (!r->inRange(D)) continue;
r->snap(m);
maL.invert();
m.mult(maL);
event->set(obj, r->csys, m, dev.second);
snapSignal->trigger<EventSnap>(event);
break;
}
} else {
Vec3f p2 = r->getSnapPoint(p);
float D = (p2-p).length(); // check distance
if (!r->inRange(D)) continue;
r->snap(m);
event->set(obj, r->csys, m, dev.second);
snapSignal->trigger<EventSnap>(event);
}
}
obj->setWorldMatrix(m);
}
// update geo
if (!hintGeo->isVisible()) return;
}