float offness(Polygon2d p) {
Region r=Region(p,oi->width,oi->height);
r.makelist();
V2d v=V2d(0,0);
int cnt=0;
for (int i=1;i<=r.list->len;i++) {
int x=r.list->num(i).x;
int y=r.list->num(i).y;
if (angs->inmap(x,y)) {
v=v+mag->pos[x][y]*V2d::rotate(V2d(1,0),angs->pos[x][y]);
cnt++;
}
}
float offness=v.mod()/(float)cnt;
printf("Quad has offness %f count %i area %f\n",offness,cnt,p.area());
return offness;
}
float areaofpoly(Polygon2d p) {
return p.area();
}
float Polygon2d::area(Polygon2d p) {
return p.area();
}