Sketchbook
Index / 2017 / Functions Within Variables 01
№ 51

Functions Within Variables 01

lessons
← Functions With Return Values Functions Within Variables 02 →
400×400 · p5.js instance mode
p5 pde
Functions_within_variables_01.pde 27 lines
/*

Creating functions within variables
02/21/2017

*/

float centerX, centerY, d;
float distance(float centerX, float centerY) {
  float a = centerX - mouseX;
  float b = centerY - mouseY;
  float c = sqrt(sq(a) + sq(b));
  return c;
}

void setup() {
  size(400, 400);
  centerX = centerY = d = 200;
}

void draw() {
  background(#000000);
  if (distance(centerX, centerY) < d/2) {
    fill(#FFFFFF);
    ellipse(centerX, centerY, d, d);
  }
}
read-only archive source from /2017/Lessons/Functions_within_variables_01/Functions_within_variables_01.pde