Method Draw

source/common/menu/menu.cpp:222–246

}

bool MenuTransition::Draw()
{
	double now = I_GetTimeNS() * (120. / 1'000'000'000);
	if (now < start + length)
	{
		double factor = screen->GetWidth()/2;
		double phase = (now - start) / double(length) * M_PI + M_PI / 2;
		DVector2 origin;

		origin.Y = 0;
		origin.X = factor * dir * (sin(phase) - 1.);
		twod->SetOffset(origin);
		previous->CallDrawer();
		origin.X = factor * dir * (sin(phase) + 1.);
		twod->SetOffset(origin);
		current->CallDrawer();
		origin = { 0,0 };
		twod->SetOffset(origin);
		return true;
	}
	if (destroyprev && previous) previous->Destroy();
	previous = nullptr;
	current = nullptr;
	return false;
}


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