Super Easy Graphics Programming

Eric Townsend pointed me to Processing - super easy programming environment for creating graphics programs.

Here's an applet I generated from it in a few minutes work, starting with an example Eric posted on The WELL.

/// start
void setup() {
  size(600,600);
}

void draw(){
  background(255);

  int left_x = 0;
  int right_x = width;
  int top_y = 0;
  int bottom_y = height;
  int light_green = #99FF99;
  int light_blue = #66CCFF;
  int light_yellow = #FFCC66;
  int pale_red = #FF3366;

  for (int n=0; n < 100; n++) {
    int y_of_n = n * (bottom_y/100);
    int x_of_n = n * (right_x/100);

    stroke(pale_red);
    line(left_x,y_of_n,mouseX,mouseY);

    stroke(light_yellow);
    line(right_x,y_of_n,mouseX,mouseY);

    stroke(light_blue);
    line(x_of_n,0,mouseX,mouseY);

    stroke(light_green);
    line(x_of_n,bottom_y,mouseX,mouseY);
  }
}

/// end

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