//Finds a point between between the two distances to point p
Vec Cone::getRandomPoint(const Vec &p, double radius1, double radius2) const{
fixRadius(radius1,radius2);
double rad = radius();
Vec point;
double rv_choose = GLOBAL_mtrand.rand() * (SA_end + SA_cone);
double x;
double y;
double num_try = 0;
do{
do{
x = GLOBAL_mtrand.rand() * 2 * rad - rad;
y = GLOBAL_mtrand.rand() * 2 * rad - rad;
}while(x * x + y * y > rad * rad);
Vec xy_point = Vec(x,y,0);
point = rotationMatrix * xy_point + origin;
if(rv_choose <= SA_end){
point += dir * height;
}else{
double r = (point - origin).Length();
point += dir * height * r / rad ;
}
num_try++;
}while(((point - p).Length() > radius1 || (point - p).Length() < radius2) && num_try < MAX_RANDOM_TRIES);
if(x >= MAX_RANDOM_TRIES){
return getRandomPoint(p,radius1);
}
return point;
}
void InteractiveCamera::changeRadius(float m){
radius += radius * m; // Change proportional to current radius. Assuming radius isn't allowed to go to zero.
fixRadius();
}