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makes sure that no pixels are drawn out of bounds

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This commit is contained in:
Francisco Dans 2015-05-13 16:02:18 +02:00
parent b6bc9185c7
commit bfd28c9a7d
1 changed files with 11 additions and 1 deletions
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12
lib/torque/renderer/ball.js
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@ -21,17 +21,27 @@ function BallRenderer(thecanvas){
this.availableWorkers = 10; this.availableWorkers = 10;
this.mode = "heat"; this.mode = "heat";
this.cachedBalls = []; this.cachedBalls = [];
this.initialize();
} }
BallRenderer.prototype = { BallRenderer.prototype = {
initialize: function(){
var self = this;
this.torqueLayer._map.on("movestart", function(){
self.transit = true
});
this.torqueLayer._map.on("moveend", function(){
self.transit = false
});
},
getBallIndices: function(x, y){ getBallIndices: function(x, y){
var indices = new Int8Array(2*r+1); var indices = new Int8Array(2*r+1);
return indices; return indices;
}, },
addBall: function(x0, y0, st){ addBall: function(x0, y0, st){
this.radius = st["marker-width"]; this.radius = st["marker-width"];
this.RW4 = this.radius * this.width *4; this.RW4 = this.radius * this.width *4;
if(this.cachedBalls[this.radius]){ if(this.cachedBalls[this.radius]){
if(x0 < 0 || y0 < 0 || x0 > this.width || y0 > this.height) return;
var startingPoint = this.getRIndexPos(x0, y0) - this.RW4 - this.radius*4; var startingPoint = this.getRIndexPos(x0, y0) - this.RW4 - this.radius*4;
var i = 0, var i = 0,
pointer = startingPoint, pointer = startingPoint,