void Coloring::show() {
Picture::show();
auto sd = static_cast<Color *>(static_cast<void *>(cairo_image_surface_get_data(surface)));
stage = gsl::span<Color>(sd, int(stride) * pixel_h());
eps = real(z2 - z1) / pixel_w();
pixel_detail = int(detail / eps);
for (int i = 0; i < pixel_w(); ++i)
for (int j = 0; j < pixel_h(); ++j) at({i, j}) = BLACK;
run([&] { tessel({0, 0}, {pixel_w() - 1, pixel_h() - 1}); });
if (aa) run([&]() { do_aa(); });
update();
}
void VspSubGlWindow::draw()
{
// Initialize Glew when context is created.
_initGLEW();
if ( !valid() )
{
m_GEngine->getDisplay()->resize( pixel_w(), pixel_h() );
}
m_GEngine->draw();
}
void Coloring::do_aa() {
int pw = pixel_w(), ph = pixel_h();
tbb::parallel_for(0, pw * ph, [=](int i) {
auto [x, y] = std::div(i, ph);
coo c{x, y};
Color cc = at(c);
bool u = true;
for (int d = 0; d < 4; ++d) {
coo c2 = c + dz[d];
if ((c2.x >= 0) && (c2.x < pw) && (c2.y >= 0) && (c2.y < ph) && (at(c2) != cc)) u = false;
}
if (!(u || die)) at(c) = aa_color(c, true);
});