Shading circle with noise cloud

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sevnollog..

Shading circle with noise cloud

in General Discussion • Other • 1 year ago

I can generate a noise cloud as a rectangle easily enough, but how do I constrain it to the shape of a circle in processing.

The only way I can think is to loop through all the pixels in the circle, but I'm not sure how to get these pixels. I'm stuck, any help would be appreciated

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tfguy44

Re: Shading circle with noise cloud

1 year ago

You could use a mask:

PGraphics no, pg;
void setup(){
size(200,200);
no = createGraphics( 200, 200, P2D);
pg = createGraphics( 200, 200, P2D);
pg.beginDraw();
pg.background(0);
pg.fill(255);
pg.noStroke();
pg.smooth();
pg.ellipseMode(CENTER);
pg.ellipse(100,100,150,150);
pg.endDraw();
}
void draw(){
no.beginDraw();
for( int x=0; x < no.width; x++){
for( int y=0; y < no.height; y++){
no.stroke( map( noise( x, y), 0, 1, 0, 255 ) );
no.point(x, y);
}
}
no.endDraw();
no.mask( pg.get() );
background(0,128,0);
image( no.get(), 0, 0);
}

Ok, so my noise generation isn't pretty, but the mask totally works!

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Shading circle with noise cloud

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