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Tue, 26 Nov 2019 12:35:14 . . . . SyneRyder [First function definition]


Changes by last author:

Added:
= gray =

== Syntax ==

int gray(int r, int g, int b, int rweight, int gweight, int bweight)

== Arguments ==

:r

::The Red pixel color value

:g

::The Green pixel color value

:b

::The Blue pixel color value

:rweight

::The weighting given to the red color in the grayscale algorithm

:gweight

::The weighting given to the green color in the grayscale algorithm

:bweight

::The weighting given to the blue color in the grayscale algorithm

== Return ==

The new grayscale pixel value.

== Description ==

Applies a simple grayscale effect to a given RGB pixel value, according to the weightings provided.

== Example ==

<code>

ctl[0]: "Red Weight", Range=(1,500), Val=250

ctl[1]: "Green Weight", Range=(1,500), Val=250

ctl[2]: "Blue Weight", Range=(1,500), Val=250

ForEveryTile: {

int r, g, b;

for (y = y_start; y < y_end; y++) {

for (x = x_start; x < x_end; x++) {

r = src(x,y,0);

g = src(x,y,1);

b = src(x,y,2);

for (z=0; z < 3; z++) {

pset(x,y,z, gray(r, g, b, ctl(0), ctl(1), ctl(2)));

}

}

}

return true;

}

</code>

== See Also ==

blend, contrast, saturation