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Examples for Processing (BETA) version 91+. If you have a previous version, use the examples included with your software. If you see any errors or have comments, please let us know.

Increment_Decrement
by REAS <http://reas.com>

Writing "a++" is equivalent to "a = a + 1" and writing "a--" is equivalent to "a = a - 1"

Created 09 December 2002

    
// Increment_Decrement 
// by REAS <http://reas.com> 

int a; 
int b; 
boolean direction; 
 
void setup() 
{ 
  size(200, 200); 
  colorMode(RGB, width); 
  a = 0; 
  b = width; 
  direction = true; 
  framerate(30); 
} 
 
void draw() 
{ 
  a++; 
  if(a > width) { 
    a = 0; 
    direction = !direction; 
  } 
  if(direction == true){ 
    stroke(a); 
  } else { 
    stroke(width-a); 
  } 
  line(a, 0, a, height/2); 
 
  b--; 
  if(b < 0) { 
    b = width; 
  } 
  if(direction == true) { 
    stroke(width-b); 
  } else { 
    stroke(b); 
  } 
  line(b, height/2+1, b, height); 
}
 







    
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