From 3db32964f008bfa0e2c2081340de7f9556ba3ee9 Mon Sep 17 00:00:00 2001
From: Francisco Dans <fdansv@gmail.com>
Date: Tue, 12 May 2015 12:11:54 +0200
Subject: [PATCH] caches balls by radii

---
 lib/torque/renderer/ball.js | 19 ++++++++++---------
 1 file changed, 10 insertions(+), 9 deletions(-)

diff --git a/lib/torque/renderer/ball.js b/lib/torque/renderer/ball.js
index 8d0ae25..746d1a7 100644
--- a/lib/torque/renderer/ball.js
+++ b/lib/torque/renderer/ball.js
@@ -4,24 +4,23 @@
 // developed by Francisco Dans
 ////////////////////////////////
 
-var work = require('webworkify');
-
 function BallRenderer(thecanvas){
 	this.canvas = thecanvas;
 	this.ctx = this.canvas.getContext("2d");
 	this.width = this.canvas.width;
+	this.chWidth = this.canvas.width * 4;
 	this.height = this.canvas.height;
 	this.size = this.width * this.height;
 	this.pointLayer = new Uint8ClampedArray(this.size * 4);
-	this.radius = 15;
 	this.drawnTemp = {};
 	this.prof = 0;
 	this.gradient = {};
 	this.ballsSoFar = 0;
 	this.balls = 0;
 	this.cumulative = true;
-	this.RW4 = this.radius * this.width *4;
 	this.availableWorkers = 10;
+	this.mode = "heat";
+	this.cachedBalls = [];
 }
 BallRenderer.prototype = {
 	getBallIndices: function(x, y){
@@ -29,8 +28,10 @@ BallRenderer.prototype = {
 
 		return indices;
 	},
-	addBall: function(x0, y0){
-		if(this.cachedBall){
+	addBall: function(x0, y0, st){
+		this.radius = st["marker-width"];
+		this.RW4 = this.radius * this.width *4;
+		if(this.cachedBalls[this.radius]){
 			var startingPoint = this.getRIndexPos(x0, y0) - this.RW4 - this.radius*4;
 			var i = 0, 
 			pointer = startingPoint, 
@@ -39,7 +40,7 @@ BallRenderer.prototype = {
 			endPoint = this.getRIndexPos(x0, y0) + this.RW4 + this.radius;
 			while (pointer <= endPoint){
 				while (pointer <= linemax){
-					this.pointLayer[pointer+3] += this.cachedBall[i+3];
+					this.pointLayer[pointer+3] += this.cachedBalls[this.radius][i+3];
 					i+=4;
 					pointer+=4;
 				}
@@ -52,7 +53,7 @@ BallRenderer.prototype = {
 		}
 	},
 	precacheBall: function(x0, y0){
-		this.cachedBall = new Uint8ClampedArray(Math.pow(2 * this.radius + 1, 2)*4);
+		this.cachedBalls[this.radius]  = new Uint8ClampedArray(Math.pow(2 * this.radius + 1, 2)*4);
 		x0 = this.radius;
 		y0 = this.radius;
 		var orad = this.radius;
@@ -89,7 +90,7 @@ BallRenderer.prototype = {
 	},
 	addPoint: function(x, y, alpha){
 		var indexPos = (y*(this.radius*2+1)+x)*4;
-		this.cachedBall[indexPos + 3] += alpha;
+		this.cachedBalls[this.radius][indexPos + 3] += alpha;
 	},
 	map_range: function(value, low1, high1, low2, high2) {
         return low2 + (high2 - low2) * (value - low1) / (high1 - low1);