color version 1.4.0 has been released!
The capabilities of the Color library are limited to pure mathematical
manipulation of the colours based on colour theory without reference to
colour
profiles (such as sRGB or Adobe RGB). For most purposes, when working
with the
RGB and HSL colours, this won’t matter. However, some colour models
(like CIE
Lab*) are not supported because Color does not yet support
colour profiles,
giving no meaningful way to convert colours in absolute colour
spaces (like
Lab*, XYZ) to non-absolute colour spaces (like RGB).
Changes:
Color 1.4.0 / 2007.02.11
* Merged Austin Z.'s color-tools library (previously part of
the Ruby
PDF Tools project) with Matt Lyon’s color library.
- The HSL implementation from the Color class has been merged into
Color::HSL. Color is a module the way it was for color-tools.
- A thin veneer has been written to allow Color::new to return a
Color::HSL
instance; Color::HSL supports as many methods as possible that were
previously supported by the Color class.
- Values that were previously rounded by Color are no longer
rounded;
fractional values matter.
* Converted to hoe for project management.
* Moved to the next step of deprecating Color::Name values; printing
a
warning for each use (see the history for color-tools 1.3.0).
* Print a warning on the access of either VERSION or
COLOR_TOOLS_VERSION; the
version constant is now COLOR_VERSION.
* Added humanized versions of accessors (e.g., CMYK colours now
have both #cyan
and #c to access the cyan component of the colour; #cyan
provides the value
as a percentage).
* Added CSS3 formatters for RGB, RGBA, HSL, and HSLA outputs. Note
that the
Color library does not yet have a way of setting alpha opacity, so
the
output for RGBA and HSLA are at full alpha opacity (1.0). The values
are
output with two decimal places.
* Applied a patch to provide simple arithmetic colour addition and
subtraction
to Color::GrayScale and Color::RGB. The patch was contributed by
Jeremy
Hinegardner [email protected]. This patch also provides the
ability to
return the maximum RGB value as a grayscale colour.
* Fixed two problems reported by Jean K. [email protected]
against
color-tools relating to RGB-to-HSL and HSL-to-RGB conversion. (Color
and
color-tools use the same formulas, but the ordering of the
calculations is
slightly different with Color and did not suffer from this
problem;
color-tools was more sensitive to floating-point values and
precision
errors.)
* Fixed an issue with HSL/RGB conversions reported by Adam Johnson
[email protected].
* Added an Adobe Color swatch (Photoshop) palette reader,
Color::Palette::AdobeColor (for .aco files only).