Color is the base color class in Magick++. It is a simple container class for the pixel red, green, blue, and alpha values scaled to fit ImageMagick's Quantum size. Normally users will instantiate a class derived from Color which supports the color model that fits the needs of the application. The Color class may be constructed directly from an X11-style color string.
Available derived color specification classes are shown in the following table:
ImageMagick may be compiled to support 32 or 64 bit pixels of type PixelPacket. This is controlled by the value of the QuantumDepth define. The default is 64 bit pixels, which provide the best accuracy. If memory consumption must be minimized, or processing time must be minimized, then ImageMagick may be compiled with QuantumDepth=8. The following table shows the relationship between QuantumDepth, the type of Quantum, and the overall PixelPacket size.
Several of the coloring methods, including `Beta', `Charge', and `Occupancy', describe a range of floating point values rather than a set of names. These are colored via the color scale, which is a list of 1024 smoothly changing colors. There are many color gradations available. All of them consist of transformations of three colors. For instance, ``RGB'' colors the smallest value red, values near the middle of the scale are green, and the largest values are blue. Colors in-between are linear mixes of the two colors. The list of available gradations is given below.
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