struct SF::Color

• SF::Color
• Struct
• Value
• Object

Overview

Utility struct for manipulating RGBA colors

SF::Color is a simple color struct composed of 4 components:

• Red
• Green
• Blue
• Alpha (opacity)

Each component is a public member, an unsigned integer in the range 0..255. Thus, colors can be constructed and manipulated very easily:

color = SF::Color.new(255, 0, 0) # red
color.r = 0                      # make it black
color.b = 128                    # make it dark blue

The fourth component of colors, named "alpha", represents the opacity of the color. A color with an alpha value of 255 will be fully opaque, while an alpha value of 0 will make a color fully transparent, whatever the value of the other components is.

The most common colors are already defined as static variables:

black       = SF::Color::Black
white       = SF::Color::White
red         = SF::Color::Red
green       = SF::Color::Green
blue        = SF::Color::Blue
yellow      = SF::Color::Yellow
magenta     = SF::Color::Magenta
cyan        = SF::Color::Cyan
transparent = SF::Color::Transparent

Colors can also be added and modulated (multiplied) using the overloaded operators + and *.

Defined in:

lib/crsfml/src/graphics/graphics.cr
lib/crsfml/src/graphics/obj.cr
Color/Color.cr

Instance Method Summary

• #from_hsv(h, s, v : Float32) : SF::Color

Instance Method Detail