int inter_cyl_shadow(t_object *obj, t_spobject *lum)
{
t_inter i;
protate(lum, obj);
obj->xrot *= -1;
obj->yrot *= -1;
obj->zrot *= -1;
translate1(obj, lum);
rotate(lum, obj);
i.a = pow(lum->vx, 2) + pow(lum->vy, 2);
i.b = 2 * (lum->x * lum->vx + lum->y * lum->vy);
i.c = pow(lum->x, 2) + pow(lum->y, 2) - pow(obj->ray, 2);
i.delta = i.b * i.b - 4 * i.a * i.c;
i.k = (i.b - sqrt(i.delta)) / (2 * i.a);
i.k2 = (i.b + sqrt(i.delta)) / (2 * i.a);
translate2(obj, lum);
punrotate(lum);
unrotate(lum);
obj->xrot *= -1;
obj->yrot *= -1;
obj->zrot *= -1;
if (i.delta >= 0)
if ((i.k2 < 0.9999 && i.k2 > 0.00001) || (i.k < 0.9999 && i.k > 0.00001))
return (-1);
return (0);
}
int inter_cone_shadow(t_object *obj, t_spobject *lum)
{
t_inter i;
protate(lum, obj);
translate1(obj, lum);
obj->xrot *= -1;
obj->yrot *= -1;
obj->zrot *= -1;
rotate(lum, obj);
i.d = 0;
if (cos(obj->angle) != 0)
i.d = sin(obj->angle) / cos(obj->angle);
i.a = pow(lum->vx, 2) + pow(lum->vy, 2) - pow(lum->vz, 2) * pow(i.d, 2);
i.b = 2 * (lum->x * lum->vx + lum->y * lum->vy -
(lum->z * (lum->vz) * pow(i.d, 2)));
i.c = pow(lum->x, 2) + pow(lum->y, 2) - pow(lum->z, 2) * pow(i.d, 2);
i.delta = i.b * i.b - 4 * i.a * i.c;
i.k = (i.b - sqrt(i.delta)) / (2 * i.a);
i.k2 = (i.b + sqrt(i.delta)) / (2 * i.a);
translate2(obj, lum);
punrotate(lum);
unrotate(lum);
obj->xrot *= -1;
obj->yrot *= -1;
obj->zrot *= -1;
return (inter_cone_shadow_delta(&i));
}
int inter_plan_shadow(t_object *obj, t_spobject *lum)
{
double k;
protate(lum, obj);
translate1(obj, lum);
obj->xrot *= -1;
obj->yrot *= -1;
obj->zrot *= -1;
rotate(lum, obj);
obj->xrot *= -1;
obj->yrot *= -1;
obj->zrot *= -1;
k = lum->z / lum->vz;
translate2(obj, lum);
punrotate(lum);
unrotate(lum);
if (k < 0.9999 && k > 0.00001)
return (-1);
return (0);
}
void rotate(vector<int>& nums, int k) {
auto n=nums.size();
protate(nums,0,n-k-1);
protate(nums,n-k,n-1);
protate(nums,0,n-1);
}
