Modifications

== Correction Gamma ==

== Correction Gamma ==

Because the Adafruit_GFX library was originally designed for LCDs (having limited color fidelity), it handles colors as 16-bit values (rather than the full 24 bits that NeoPixels are capable of). This is not the big loss it might seem. A quirk of human vision makes bright colors less discernible than dim ones. The Adafruit_NeoMatrix library uses gamma correction to select brightness levels that are visually (though not numerically) equidistant. There are 32 levels for red and blue, 64 levels for green.

Because the Adafruit_GFX library was originally designed for LCDs (having limited color fidelity), it handles colors as 16-bit values (rather than the full 24 bits that NeoPixels are capable of). This is not the big loss it might seem. A quirk of human vision makes bright colors less discernible than dim ones. The Adafruit_NeoMatrix library uses ''gamma correction'' to select brightness levels that are visually (though not numerically) equidistant. There are 32 levels for red and blue, 64 levels for green.

The Color() function performs the necessary conversion; you don’t need to do any math. It accepts 8-bit red, green and blue values, and returns a gamma-corrected 16-bit color that can then be passed to other drawing functions.  

The {{fname|Color()}} function performs the necessary conversion; you don’t need to do any math. It accepts 8-bit red, green and blue values, and returns a gamma-corrected 16-bit color that can then be passed to other drawing functions.  

Tester comment <font style="font-family: courier, monospace; font-size: 12pt;">testMeQuick()</font> pour jouer

Tester comment <font style="font-family: courier, monospace; font-size: 12pt;">testMeQuick()</font> pour jouer

{{NeoPixel-UserGuide-TRAILER}}

{{NeoPixel-UserGuide-TRAILER}}