Merging an image with a color?

[Renoria]

How could I merge an image with a color, so that I can make frozen looking sprites while I don't need another image?

[Eli Delventhal]

Yup. You can do this one of two ways.

1) Create a new BufferedImage as you load it which is icy (recommend).
2) On-the-fly overlay some color on the top of your image.

To do 1, it's something like this:

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BufferedImage tintedImage = new BufferedImage(oldImage.getWidth(), oldImage.getHeight(), BufferedImage.TYPE_INT_ARGB); for (int i = 0; i < tintedImage.getRaster().getWidth(); i++) {      for (int j = 0; j < tintedImage.getRaster().getHeight(); j++)      {           int[] data = new int[4];           data = oldImage.getRaster().getPixel(i,j,data);           //Adds a blue tint, but make sure it doesn't go over 255.          data[2] = Math.min(255,data[2]+50);           tintedImage.getRaster().setPixel(i,j,data);      } }

To do 2:

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g.drawImage(oldImage,x,y,width,height,null); g.setColor(new Color(0,0,50,100)); g.fillRect(x,y,width,height);

#2 will unfortunately leave a haze around the transparent area. You can also just do #1 every single time you draw, but that's slow.

[Orangy Tang]

1	data[2] = Math.min(255,data[2]+50);

I'm not sure that's a good way to tint something - firstly it'll only work if you want to tint towards a primary colour and secondly because you're adding to the blue colour channel the result is going to be brighter than the original, not just blue-er. A better way would be to do a weighted average between the base colour and the tint colour. Better still would be to convert to a different colour space which makes the operation trivial (like <a href="http://en.wikipedia.org/wiki/HSL_and_HSV">HSL</a>) then convert back to RGB to update your image.

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[Renoria]

What about using RBGFilter?