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Extract color brightness
int PgGrayValue( PgColor_t color );
- color
- A composite color value, of type
PgColor_t.
ph
This macro converts a composite
color into its corresponding level of
gray. The calculation is based on 30% red, 59% green, and
11% blue, resulting in a value between 0 and
255.
The gray component of the color.
// Convert pal[i] into monochrome
pal[i] = PgGray( PgGrayValue( pal[i] ) );
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
PgBlueValue(),
PgCMY(),
PgColor_t,
PgGreenValue(),
PgHSV(),
PgRedValue(),
PgRGB(),
PgSetFillColor(),
PgSetFillDither()
“Color”
in the Raw Drawing and Animation chapter of the
Photon Programmer's Guide
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