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1  Game Development / Newbie & Debugging Questions / Re: Achieving transparency using RGB values on: 2013-01-12 23:06:27
Just draw the shapes with alpha values in the colours. Pointing

Seriously, why wouldn't you?

A real man likes a challenge!

@ pjt33
This is exactly what I needed. Thank you!

It's not a challenge if you ask someone else for the answer. Cranky

True Cheesy
I've been trying to do it for like 5 hours and it didn't work for me  Sad

It's only a challenge if you can figure it out. Cheesy
2  Game Development / Newbie & Debugging Questions / Re: Achieving transparency using RGB values on: 2013-01-12 22:50:08
Just draw the shapes with alpha values in the colours. Pointing

Seriously, why wouldn't you?

A real man likes a challenge!

@ pjt33
This is exactly what I needed. Thank you!
3  Game Development / Newbie & Debugging Questions / Re: Achieving transparency using RGB values on: 2013-01-12 21:34:26
Try 0x7F000000

And btw, no matter how transparent the black is, it's not going to show on a black background. Wink

Sorry for not explaining very well.
I need to transform the one pixel to a darker pixel thus creating an illusion of transparency. I believe 0x7F000000 will not work because I am using 1 BufferedImage to render things.



The last image on the second row.
4  Game Development / Newbie & Debugging Questions / Achieving transparency using RGB values on: 2013-01-12 21:23:59
Hi!
I am trying to draw a black box with transparency. You know.. a black box with like 50% opacity. And I'm not really sure how to do it, I have tried using http://en.wikipedia.org/wiki/Alpha_compositing , but I had no luck. Could anyone explain to me how to do it?
If you are wondering, here is what I have so far which is basically nothing:
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public void fillAlpha() {
      int x = 50;
      int y = 50;
      int w = 70;
      int h = 70;
      int background = 0x000000;
     
      for (int yy = y; yy < h + y; yy++) {
         for (int xx = x; xx < w + x; xx++) {
           
            pixels[xx + yy * width] = 0x000000;
           
         }
      }
   }

I have removed the formulas from the wikipedia page because I couldn't make them work.
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