icon.SwapColor + rgb(R,G,B) = Alpha ignorance (Unsure)

ID:133982
 
Aug 21 2007, 1:12 pm
Applicable Configuration:
BYOND Version: 400.951
Operating System: Windows XP
Web Browser: FF
Video Card (for graphics bugs): ATI Radeon Xpress 200M

Descriptive Problem Summary:

When you swap colors via icon.SwapColor() using rgb(), it ignores colors that have an alpha value that != 255 (eg: Alpha is 101). When the alpha amount is defined in rgb(), such as rgb(r,g,b,101), it will look for only that specific RGB with that certain alpha transparency.

I assume that the procedure is very specific and checking if the RGB of the pixels found == #RRGGBB(AA) so this is why I said I am unsure if it's a bug or not.

Numbered Steps to Reproduce Problem:
Make two states of a certain color, eg: red = rgb(255,0,0), once of them slightly transparent.

Code Snippet (if applicable) to Reproduce Problem:
icon.SwapColor(rgb(255,0,0),rgb(0,0,255))


Expected Results:
Both states (reg. and transparent) would turn from red to blue.

Actual Results:
Just the opaque turns blue. If rgb() was entered with the alpha, only the alpha would be recoloured.

Does the problem occur:
Every time

**As mentioned before, I am not sure if this is a bug or not**
Aug 21 2007, 1:59 pm
GhostAnime wrote:
When you swap colors via icon.SwapColor() using rgb(), it ignores colors that have an alpha value that != 255 (eg: Alpha is 101). When the alpha amount is defined in rgb(), such as rgb(r,g,b,101), it will look for only that specific RGB with that certain alpha transparency.

Yes, that is intentional behavior. rgb(r,g,b) is really just a shortcut for rgb(r,g,b,255). There's not any realistic way for SwapColor() to know you really want to change, say, all red to yellow regardless of alpha.

Lummox JR