updating examples

Author: lauren mccarthy

examples/p5.Vector/NOC_6_09_Flocking/boid.js

@@ -70,15 +70,15 @@ Boid.prototype.render = function() {
   var theta = this.velocity.heading() + radians(90);
   fill(127);
   stroke(200);
-  pushMatrix();
+  push();
   translate(this.position.x,this.position.y);
   rotate(theta);
   beginShape();
   vertex(0, -this.r*2);
   vertex(-this.r, this.r*2);
   vertex(this.r, this.r*2);
   endShape(CLOSE);
-  popMatrix();
+  pop();
 }
 
 // Wraparound

examples/pixel/set-pixels.js

@@ -11,6 +11,7 @@ function preload() {
 
 function setup() {
   createCanvas(256, 256);
+  loadPixels();
   set(width/2, height/2, img);
 }
 
@@ -20,6 +21,7 @@ function draw() {
   for (var i=-5; i<5; i++) {
       set(mouseX+i, mouseY, [0, 0, 255, 100]);
   }
-  set(mouseX, mouseY, [255, 0, 255]);
+  set(mouseX, mouseY, [255, 0, 255, 255]);
   set(mouseX+10, mouseY+10, 0);
+  updatePixels();
 }

examples/pixel/update-pixels.js

@@ -19,7 +19,11 @@ function draw() {
   for (var y=0 ; y<height; y++) {
     for (var x=0; x<width; x++) {
       if (pow((x-mouseX), 2)+ pow((y-mouseY), 2)<pow(radius, 2))  {
-        pixels[y*width+x] = img.get(x, y);
+        var c = img.get(x, y);
+        pixels[4*(y*width+x)] = c[0];
+        pixels[4*(y*width+x)+1] = c[1];
+        pixels[4*(y*width+x)+2] = c[2];
+        pixels[4*(y*width+x)+3] = c[3];
       }
     }
   }