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Index › Suggestions & Bugs › Website,  Documentation,  Book Bugs › class reference page contains code mistake

Stefan Nowak YaBB Newbies Offline Posts: 23

class reference page contains code mistake Sep 10th, 2008, 12:44pm   Below is the code example from the reference page of class with some corrections, explained in the inline comments. Quote: // Declare and contruct two objects (h1, h2) from the class HLine HLine h1 = new HLine(20, 2.0); HLine h2 = new HLine(50, 2.5);   void setup() {   size(200, 300); /*   The mistake in this example did not stand out   because of the original 1:1 (200x200px) ratio   of width/height, therefore I changed it. */   frameRate(30); } void draw() {   background(204);   h1.update();    h2.update();   }    class HLine {   float ypos, speed;   HLine (float y, float s) {       ypos = y;      speed = s;    }    void update() {     ypos += speed;      if (ypos > height) { /*      I replaced "width" with "height", as I think "height" is intended,     so that the line starts from top again as soon as it hits bottom,     the mistake just did not stand out,     because the canvas of the example was quadratic (width=height),     but the mistake is realized if you change the canvas to a ratio other than 1:1. */       ypos = 0;      }      line(0, ypos, width, ypos);   }  }

REAS YaBB Moderator Offline Posts: 712 CA	Re: class reference page contains code mistake Reply #1 - Sep 22nd, 2008, 2:46am   fixed.