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// Sets the background gray value based on the distance 
// of the mouse from the center of the screen
void draw() {
  float d = dist(width/2, height/2, mouseX, mouseY);
  float maxDist = dist(0, 0, width/2, height/2);
  float gray = map(d, 0, maxDist, 0, 255);
  rect(0, 0, width, height);
Description Calculates the distance between two points.
dist(x1, y1, x2, y2)
dist(x1, y1, z1, x2, y2, z2)
x1 float: x-coordinate of the first point
y1 float: y-coordinate of the first point
z1 float: z-coordinate of the first point
x2 float: x-coordinate of the second point
y2 float: y-coordinate of the second point
z2 float: z-coordinate of the second point
Updated on November 9, 2015 11:16:05pm EST

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