display.save() simulator issue

Audio and Graphics
#1

Hi to all and excuse me for my english  :smiley:

I have the code:

function Diomautils.applyMaskFromPolygon(object, polygon, maskName) – thanks to http://ragdogstudios.com

  --we use these to scale down the mask so that it looks exactly the same on any device

  local pixelWidth, pixelHeight;

  local contentWidth, contentHeight = display.contentWidth-(display.screenOriginX*2), display.contentHeight-(display.screenOriginY*2);

  if contentWidth > contentHeight then

    pixelWidth = display.pixelHeight;

    pixelHeight = display.pixelWidth;

  else

    pixelWidth = display.pixelWidth;

    pixelHeight = display.pixelHeight;

  end

  

  local maskGroup = display.newGroup();

  --create a rect with width and height higher than polygon and rounded up to 2^)

  local rectWidth, rectHeight = 1, 1;

  while (rectWidth < polygon.contentWidth) do

    rectWidth = rectWidth*2;

  end

  while (rectHeight < polygon.contentHeight) do

    rectHeight = rectHeight*2;

  end

  local blackRect = display.newRect(maskGroup, 0, 0, rectWidth, rectHeight);

  blackRect:setFillColor(0, 0, 0, 1);

  

  maskGroup:insert(blackRect)

  maskGroup:insert(polygon);

  polygon.x, polygon.y = 0, 0;

  polygon:setFillColor(1, 1, 1, 1);

  

  maskGroup.x, maskGroup.y = display.contentCenterX, display.contentCenterY;

  

  display.save(maskGroup, {filename = maskName or “mask.jpg”, baseDir = system.DocumentsDirectory, isFullResolution = true});

  local mask = graphics.newMask(maskName or “mask.jpg”, system.DocumentsDirectory);

  object:setMask(mask);

  

  --here we scale down the mask to make it consistent across devices

  object.maskScaleX = contentWidth/pixelWidth;

  object.maskScaleY = object.maskScaleX;

  maskGroup:removeSelf();

end

that can mask a group dinamically. So the display.save() not save correctly! On the saved image there isn’t the blackRect!!! Is a known simulator issue or is it my bad?

Thanks you very much!!!