float MyVector::distance(MyVector theOtherVector){
return pow(
pow(this->getX()-theOtherVector.getX(),int(2))+
pow(this->getY()-theOtherVector.getY(),int(2))+
pow(this->getZ()-theOtherVector.getZ(),int(2))
, (float) 0.5);
}
// This account for the orientation of (i,j) vectors (computer graphics window basis orientation)
MyVector <float> Util::fromCartesianToPolar(MyVector <float> origin, MyVector <float> v)
{
float x = v.getX();
float y = v.getY();
float ox = origin.getX();
float oy = origin.getY();
float a;
float r = std::sqrt((x-ox)*(x-ox)+(y-oy)*(y-oy));
if(r == 0.0f)
return MyVector <float> (0.0f, 0.0f);
if(y - oy > 0.0f)
a = 2 * M_PI - std::acos((x - ox)/r);
else
a = std::acos((x - ox)/r);
return MyVector <float> (r, a);
}
float Util::norm(MyVector <float> v1, MyVector <float> v2)
{
return norm(v1.getX(), v1.getY(), v2.getX(), v2.getY());
}
// no need for origin but here to remind that this will give X and Y offset to the point from
// the same center used as polar origin
// <!> have to make it consistent with (i,j) orientation (computer graphics window basis orientation) <!>
MyVector <float> Util::fromPolarToCartesian(MyVector <float> origin, MyVector <float> v)
{
return MyVector <float> (v.getX() * std::cos(v.getY()), v.getX() * std::sin(v.getY()));
}
