From f6cd6434ae9037c069e1992dc2e66b3dc7952a8a Mon Sep 17 00:00:00 2001
From: Amadeus Demarzi <amadeusdemarzi@gmail.com>
Date: Thu, 24 Jul 2014 21:37:48 -0700
Subject: [PATCH] A few subtle draw performance fixes

By rounding all floated values to whole numbers... we can help a tad
with aliasing and the like
---
 .../source/javascripts/app/Engine.Particle.Fixed.js  |  4 ++--
 website/source/javascripts/app/Engine.Particle.js    |  4 ++--
 website/source/javascripts/app/Engine.Polygon.js     | 12 ++++++------
 website/source/javascripts/app/Engine.Shape.js       | 12 +++++++++---
 4 files changed, 19 insertions(+), 13 deletions(-)

diff --git a/website/source/javascripts/app/Engine.Particle.Fixed.js b/website/source/javascripts/app/Engine.Particle.Fixed.js
index 164b43057..530edad9c 100644
--- a/website/source/javascripts/app/Engine.Particle.Fixed.js
+++ b/website/source/javascripts/app/Engine.Particle.Fixed.js
@@ -55,8 +55,8 @@ Engine.Particle.Fixed.prototype = {
 		// Draw a circle - far less performant
 		ctx.beginPath();
 		ctx.arc(
-			this.pos.x * scale,
-			this.pos.y * scale,
+			this.pos.x * scale >> 0,
+			this.pos.y * scale >> 0,
 			this.radius * scale,
 			0,
 			Math.PI * 2,
diff --git a/website/source/javascripts/app/Engine.Particle.js b/website/source/javascripts/app/Engine.Particle.js
index 5b5c0d9e0..b2ef88452 100644
--- a/website/source/javascripts/app/Engine.Particle.js
+++ b/website/source/javascripts/app/Engine.Particle.js
@@ -135,8 +135,8 @@ Engine.Particle.prototype = {
 
 		// Draw a square - very performant
 		ctx.fillRect(
-			this.pos.x * scale,
-			this.pos.y * scale,
+			this.pos.x * scale >> 0,
+			this.pos.y * scale >> 0,
 			this.radius * scale,
 			this.radius * scale
 		);
diff --git a/website/source/javascripts/app/Engine.Polygon.js b/website/source/javascripts/app/Engine.Polygon.js
index 67ebf383b..88b08a918 100644
--- a/website/source/javascripts/app/Engine.Polygon.js
+++ b/website/source/javascripts/app/Engine.Polygon.js
@@ -63,16 +63,16 @@ Engine.Polygon.prototype = {
 	draw: function(ctx, scale){
 		ctx.beginPath();
 		ctx.moveTo(
-			this.a.pos.x * scale,
-			this.a.pos.y * scale
+			this.a.pos.x * scale >> 0,
+			this.a.pos.y * scale >> 0
 		);
 		ctx.lineTo(
-			this.b.pos.x * scale,
-			this.b.pos.y * scale
+			this.b.pos.x * scale >> 0,
+			this.b.pos.y * scale >> 0
 		);
 		ctx.lineTo(
-			this.c.pos.x * scale,
-			this.c.pos.y * scale
+			this.c.pos.x * scale >> 0,
+			this.c.pos.y * scale >> 0
 		);
 		ctx.closePath();
 		ctx.fillStyle   = this.fillStyle;
diff --git a/website/source/javascripts/app/Engine.Shape.js b/website/source/javascripts/app/Engine.Shape.js
index f371dddff..d7c632cc2 100644
--- a/website/source/javascripts/app/Engine.Shape.js
+++ b/website/source/javascripts/app/Engine.Shape.js
@@ -42,20 +42,23 @@ Engine.Shape.prototype = {
 
 	selfDestruct: function(time){
 		this.destruct = time;
+		this.elapsed = 0;
 		return this;
 	},
 
 	update: function(engine){
 		var p;
 
+		// if (this.destruct) {
+		//     this.elapsed += engine.tick;
+		// }
+
 		for (p = 0; p < this.points.length; p++)  {
 			this.points[p].update(engine);
-			// this.points[p].draw(this.context, scale);
 		}
 
 		for (p = 0; p < this.polygons.length; p++) {
 			this.polygons[p].update(engine);
-			// this.polygons[p].draw(this.context, scale);
 		}
 
 		return this;
@@ -65,7 +68,10 @@ Engine.Shape.prototype = {
 		var p;
 
 		ctx.save();
-		ctx.translate(this.pos.x * scale, this.pos.y * scale);
+		ctx.translate(
+			this.pos.x * scale >> 0,
+			this.pos.y * scale >> 0
+		);
 		for (p = 0; p < this.polygons.length; p++) {
 			this.polygons[p].draw(ctx, scale);
 		}