"Przemek Loesch" <loe### [at] rtknetpl> wrote:
> Hi to everyone! This is my first post here.
> ACI - Autocad Color Index is mainly used for specyfing colors of entities in
> DXF files. This scene was made to test the method of reading ACI colors I am
> preparing for my cad-like program.
> By the way I discovered a strange behaviour of CHSL2RGB macro from
> "Colors.inc". It seems this macro does the conversion in an other way than
> most of a graphics software do. When calling CHSL2RGB(0,1,1) one receives
> rgb<1,1,1> instead of rgb<1,0,0>. This macro adds some white to rgb vector
> (based on value of L) when it should rather work like increasing values of
> two color components to the level of the component which has the highest
> value, but no higher then this value. Anyway this is a matter of convention
> and I'm not telling this macro is wrong. Just if you want to convert colors
> from HSL to RGB like Photoshop do you can use my version.
> Greetings!


Hi, I would like to know how to convert from RGB color to ACI color index in
autocad. Thank.

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