Package xcolor
Package xcolor implements Red, RedGreen, and RGB color models matching the core
image/color interface.
Note that there are good reasons these color types aren't in the core
image.color package. The native color types may have optimized fast-paths
for many use cases.
This package is a tradeoff of these optimizations against lower memory
usage. This package is intended to be used in computer graphics (e.g.
OpenGL) where images are uploaded to the GPU in a specific format (such as
GL_R, GL_RG, or GL_RGB) and we don't care about the performance of native
Go image manipulation.
OpenGL® and the oval logo are trademarks or registered trademarks of
Hewlett Packard Enterprise
in the United States and/or other countries worldwide.
License: BSD-3-Clause (see LICENSE.txt)
Stable: yes
For more information, documentation, source code, examples, support, links,
etc. please see https://www.tawesoft.co.uk/go and
https://www.tawesoft.co.uk/go/ximage/xcolor
Variables
var RGBModel color.Model = color.ModelFunc(rgbModel)
var RGModel color.Model = color.ModelFunc(func(c color.Color) color.Color {
if _, ok := c.(color.RGBA); ok {
return c
}
r, g, _, _ := c.RGBA()
return RG{uint8(r >> 8), uint8(g >> 8)}
})
var RedModel color.Model = color.ModelFunc(redModel)
Red represents an 8-bit Red 8-bit Green color.
type RG struct {
R uint8
G uint8
}
func (RG) RGBA
¶
func (c RG) RGBA() (r, g, b, a uint32)
RGB represents an 8-bit Red 8-bit Green 8-bit Blue color.
type RGB struct {
R uint8
G uint8
B uint8
}
func (RGB) RGBA
¶
func (c RGB) RGBA() (r, g, b, a uint32)
Red represents an 8-bit red color.
type Red struct {
R uint8
}
func (Red) RGBA
¶
func (c Red) RGBA() (r, g, b, a uint32)
