void CSGIntersectIntersection::next() {
do{
if (iheap.intersection() == 0) {
// we had only the boundingbox intersection with this object so far
Intersection* ci = iheap.object()->intersectLimitedTime(ray,tmax);
if (ci) {
DBL t = ci->currentTime();
iheap.intersection() = ci;
iheap.time() = t;
} else iheap.time() = INTERSECTION_INFINIT_TIME;
} else {
iheap.intersection()->next();
iheap.time() = iheap.intersection()->currentTime();
}
iheap.reassureHeap();
if (iheap.time() == INTERSECTION_INFINIT_TIME) return;
} while (checkHead()==false);
}
Intersection* CSGIntersect::intersectLocalLimitedTime(const Ray &shoot, DBL tmax) const {
assert(isclosed);
stat.eval();
CSGIntersectIntersection* i = 0;
// fill Array with initial values
for(unsigned int j=0; j<objects->listsize; j++) {
Object3D* current = static_cast<Object3D*>(objects->list[j]);
double t;
if ( (t=current->intersectBounding(shoot,tmax))!=INTERSECTION_TIME_EPSILON ) {
if (t > INTERSECTION_TIME_EPSILON) {
// boundingbox hit
if (i == 0) i = new CSGIntersectIntersection(this,shoot,tmax);
i->put(0,t,current);
continue;
}
} else {
// there is no boundingbox or we are inside
Intersection* ci = current->intersectLimitedTime(shoot,tmax);
if (ci) {
if (i == 0) i = new CSGIntersectIntersection(this,shoot,tmax);
i->put(ci,ci->currentTime(),current);
continue;
}
}
// no intersection with that object, test if we are inside
Vector3 testpoint = Vector3::add( shoot.getOrigin(), shoot.getDirection() );
if (static_cast<const Object3D*>(current)->isInsideAtBounded(testpoint)==false) {delete(i); return 0;}
}
if (i) {
// build up structure
if (i->init() == false) {delete(i); return 0;}
stat.success();
}
return i;
}
Intersection* CSGUnion::intersectLocalLimitedTime(const Ray &shoot, DBL tmax) const {
assert(isclosed);
stat.eval();
CSGUnionIntersection* i = 0;
// fill Array with initial values
for(unsigned int j=0; j<objects->listsize; j++) {
Object3D* current = static_cast<Object3D*>(objects->list[j]);
double t;
if ( (t=current->intersectBounding(shoot,tmax))!=INTERSECTION_TIME_EPSILON ) {
if (t > INTERSECTION_TIME_EPSILON) {
// boundingbox hit
if (i == 0) i = new CSGUnionIntersection(this,shoot,tmax);
i->put(0,t,current);
}
} else {
// there is no boundingbox or we are inside
Intersection* ci = current->intersectLimitedTime(shoot,tmax);
if (ci) {
if (i == 0) i = new CSGUnionIntersection(this,shoot,tmax);
i->put(ci,ci->currentTime(),current);
}
}
}
if (i) {
// build up structure
if (i->init() == false) {delete(i); return 0;}
stat.success();
}
return i;
}
