ClsColorSet set = new(
new List<ClsColor>()
{
new ClsColor(123, 234, 243, 255),
new ClsColor(123, 234, 243, 0),
},
"Color Set Name");
set.Save("TwoColors.cls");ClsColorSet set = ClsColorSet.Load(@"LightGrayish.cls");I reverse-engineered the format myself, so this is not a complete spec. I don't know if the values are signed or unsigned, but it shouldn't matter for any reasonable color set. I assume unsigned in the code.
CSP seems to treat any colors with non-zero alpha as fully opaque, so the only alpha values you should use are 0 and 255.
| type | description |
|---|---|
| int32 | number, 32 bit |
| int16 | number, 16 bit |
| rgba | 4 bytes with RGBA values |
| ascii | text encoded as ASCII, 1 byte/character (without string terminators or anything else) |
| utf8 | text encoded as UTF-8, 1-4 bytes/character |
| type | value |
|---|---|
| ascii | SLCC |
| int16 | 256 |
I put 256 as a part of the signature, but it could also be an indication of the version
| type | value |
|---|---|
| int32 | length of the rest of the header in bytes |
| int16 | length of the following string in bytes |
| ascii | name of the color set |
| int32 | 0 |
| int16 | length of the following string in bytes |
| utf8 | name of the color set |
CSP ignored the ASCII name.
The zero in the middle seems to be useless, changing it to any other value doesn't prevent CSP from loading the file.
| type | value |
|---|---|
| int32 | 4 |
| int32 | number of colors |
| int32 | length of the next section in bytes |
"4" might be the number of channels, values above 4 prevent CSP from loading the file. 0-3 are treated the same as 4.
The next section contains all colors written one after another in the following format:
| type | value |
|---|---|
| int32 | length of the rest of this block in bytes, always 8 |
| rgba | the color |
| int32 | 0 |
The 0 in the end doesn't do anything as far as I can tell, but it has to be a zero. Curiously, you can omit the 0 and set the length to 4, and the file loads just fine. Increasing the length and appending more zeros also doesn't break the file. I don't recommend doing any of that though, as CSP itself outputs colors with length 8 and a trailing 0.