colorRGB BRDF_reflection::reflect_f(hitInfo *info_ptr, const vector3D &win) const {
hitInfo info = *info_ptr;
light_point reflect = light_point(info_ptr->hit_point, rho);
reflect.inherit_light(info_ptr->light_ptr);
reflect.set_shadow(false);
info.ray_tracing_depth = info_ptr->ray_tracing_depth - 1;
return rho * info_ptr->camera_ptr->render_scene(info_ptr->hit_point, 2 * info_ptr->normal - win, &info, &reflect);
}
void lighting(t_intersect *sct, t_env *env, float *reflect)
{
float refl_ray;
t_vec tmp;
// t_ray r;
// reset_ray(r, &env->r);
sct->norm_check = 1.0f / sqrtf(sct->norm_check);
sct->normal = vector_scale(sct->norm_check, &sct->normal);
light_point(sct, env);
env->coef *= *reflect;
refl_ray = 2.0f * vector_dot(&env->r.dir, &sct->normal);
tmp = vector_scale(refl_ray, &sct->normal);
env->r.dir = vector_sub(&env->r.dir, &tmp);
}
void Widget::paintEvent(QPaintEvent *)
{
int i, nSteps, count;
double t, tt, scale = ( width()/4 + height()/4 )/6, sum, k;
double x, y, z, delta = 0.005, dxdt = 1, dydt = 1, tempDelta;
my_vector4 xyz(0.0, 0.0, 0.0), xyz0(width()/2, height()/2, scale*5.0), xxyyzz(0.0, 0.0, 0.0),
light_point(0.0, 0.0, scale*13.0), xyz_s(0.0,0.0,0.0), xxyyzz_s(0.0, 0.0, 0.0);
QPainter p(this);
if (!dF){
delta = inpDelta;
nSteps = (2*pi) / delta + 1;
}
else{
delta = 0.05;
count = 0;
sum = 0;
t = 0;
tt = 0;
k = 1;
while (sum < 2*pi){
dxdt = -inpA * sin( t ) + inpB * inpC * sin ( inpC * t );
dydt = inpA * cos( t ) - inpB * inpC * cos ( inpC * t );
tempDelta = delta/maxAbs(dxdt, dydt);
t += tempDelta;
sum+=tempDelta;
count++;
}
nSteps = count + 1;
}
k = 1;
t = 0;
tt = 0;
dxdt = 1;
dydt = 1;
for (i = 0; i < nSteps; i++){
if(dF){
dxdt = -inpA * sin( t ) + inpB * inpC * sin ( inpC * t );
dydt = inpA * cos( t ) - inpB * inpC * cos ( inpC * t );
k = 1/maxAbs(dxdt, dydt);
}
tempDelta = delta * k;
tt = t + tempDelta;
x = inpA * cos( t ) - inpB * cos ( inpC * t );
y = inpA * sin( t ) - inpB * sin ( inpC * t );
z = cos ( sqrt( x * x + y * y ) );
t = t + tempDelta;
xyz.setElem(0, x );
xyz.setElem(1, y );
xyz.setElem(2, z );
x = inpA * cos( tt ) - inpB * cos ( inpC * tt );
y = inpA * sin( tt ) - inpB * sin ( inpC * tt );
z = cos ( sqrt( x * x + y * y ) );
xxyyzz.setElem(0, x );
xxyyzz.setElem(1, y );
xxyyzz.setElem(2, z );
if (flag) {
rotateX ( xyz , beta);
rotateX ( xxyyzz, beta );
rotateY ( xyz, alpha );
rotateY ( xxyyzz, alpha );
}
if (!flag){
rotateY ( xyz , alpha);
rotateY ( xxyyzz, alpha );
rotateX ( xyz, beta );
rotateX ( xxyyzz, beta );
}
xyz.numMul(scale);
xxyyzz.numMul(scale);
vecSum(xyz, xyz0);
vecSum(xxyyzz, xyz0);
getShadowXY(light_point, xyz, xyz_s);
getShadowXY(light_point, xxyyzz, xxyyzz_s);
p.setPen(Qt::darkMagenta);
p.drawLine( xyz.getElem(0), xyz.getElem(1), xxyyzz.getElem(0), xxyyzz.getElem(1) );
p.setPen(Qt::darkGray);
p.drawLine( xyz_s.getElem(0), xyz_s.getElem(1), xxyyzz_s.getElem(0), xxyyzz_s.getElem(1) );
}
}