Initial Commit

NodeJS/SimpleWebServer/public/JS/Starfeild/Star.js

@@ -0,0 +1,36 @@
+function Star() {
+  this.x = random(-width, width);
+  this.y = random(-height, height);
+  this.z = random(width);
+  this.pz = this.z;
+
+  this.update = function() {
+    this.z = this.z - speed;
+    if (this.z < 1) {
+      this.z = width;
+      this.x = random(-width, width);
+      this.y = random(-height, height);
+      this.pz = this.z;
+    }
+  }
+
+  this.show = function() {
+    fill(255);
+    noStroke();
+
+    var sx = map(this.x / this.z, 0, 1, 0, width);
+    var sy = map(this.y / this.z, 0, 1, 0, height);
+
+    var r = map(this.z, 0, width, 4, 0);
+    ellipse(sx, sy, r, r);
+
+    var px = map(this.x / this.pz, 0, 1, 0, width);
+    var py = map(this.y / this.pz, 0, 1, 0, height);
+
+    this.pz = this.z;
+
+    stroke(255);
+    line(px, py, sx, sy);
+
+  }
+}