OpenEuphoria

Re: The Common Black Box

• Posted by David Cuny <dcuny at LANSET.COM> Aug 29, 2000
• 422 views

Paul Kerslake wrote:

> Well, I'm sure this has been asked a billion times but, how
> do I get rid of the black box around BMPs?

Converts the bitmap into 'slices', and remove the 'invisible' color. For
example, consider the box in this bitmap. The outer border is color 1, the
inner border is color 2, and the inner color is color 0 (invisible).

111111
122221
120021
120021
122221
111111

This can be broken into the following:

   { 0, 0, {1,1,1,1,1,1} }
   { 0, 1, {1,2,2,2,2,1} }
   { 0, 2, {1,2} }
   { 4, 2, {2,1} }
   { 0, 3, {1,2} }
   { 4, 3, {2,1} }
   { 0, 4, {1,2,2,2,2,1} }
   { 0, 5, {1,1,1,1,1,1} }

The first two values indicate where to place the scanline, relative to the
origin. The sequence following represents the pixels to draw.

-- David Cuny