auto open_anim = ImClamp(open_anim + (3.0f * ImGui::GetIO().DeltaTime * (is_opened ? 1.f : -1.5f)), 0.0f, 1.f);
auto size_x = 850 * open_anim;
auto size_y = 450 * open_anim;
ImGui::SetNextWindowSize(ImVec2(size_x, size_y));
if (open_anim || open_anim > 0.01)
{
ImGui::Begin("Menu");
{
if (ImGui::Button("-"))
is_opened = false;
}
ImGui::End();
}