//
// copied the source file by https://github.com/stackprobe/Factory/blob/master/SubTools/CopyLib.c
//
public static void DrawCurtain(double whiteLevel = -1.0)
{
if (whiteLevel == 0.0)
{
return;
}
whiteLevel = DoubleTools.ToRange(whiteLevel, -1.0, 1.0);
if (whiteLevel < 0.0)
{
DDDraw.SetAlpha(-whiteLevel);
DDDraw.SetBright(0.0, 0.0, 0.0);
}
else
{
DDDraw.SetAlpha(whiteLevel);
}
DDDraw.DrawRect(DDGround.GeneralResource.WhiteBox, 0, 0, DDConsts.Screen_W, DDConsts.Screen_H);
DDDraw.Reset();
}