. color method

[remus]

http://code.google.com/apis/sketchup/docs/ourdoc/material.html#color

When using it on a solid colour you get something like: Color [25,46,72,255]

the first 3 elements are the rgb bits, but whats the final element? it's not transparency...

[remus]

Cheers Tig, that makes sense.

[thomthom]

@tig said:

For acolor it's always = 255 [100% opaque]... there is a color.alpha= method but it's never ever worked, you must set alpha [transparency] for a material itself not material.color e.g. material.alpha=0.4 for 40% opacity will work but the material.color.alpha still reports 255 [100%], if you try to change it, it just does nothing !

So to recap - the fourth item in a SUp material.color array is its alpha [r,g,b,a] but it's not used ! The alpha of the material itself works as a 0 to 1.0, equivalent to % setting of opacity...
http://code.google.com/apis/sketchup/docs/ourdoc/color.html

This is one for the API Docs thread.

[remus]

Added it

[TIG]

For a color it's always = 255 [100% opaque]... there is a color.alpha= method but it's never ever worked, you must set alpha [transparency] for a material itself not material.color e.g. material.alpha=0.4 for 40% opacity will work but the material.color.alpha still reports 255 [100%], if you try to change it, it just does nothing !

So to recap - the fourth item in a SUp material.color array is its alpha [r,g,b,a] but it's not used ! The alpha of the material itself works as a 0 to 1.0, equivalent to % setting of opacity...
http://code.google.com/apis/sketchup/docs/ourdoc/color.html