cartodb/torque
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optimizes drawnTemp a bit more

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Francisco Dans 2015-02-25 12:45:45 +01:00
parent 9479b214fa
commit d048652ba9
1 changed files with 6 additions and 7 deletions
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13
lib/torque/renderer/ball.js
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@ -12,7 +12,7 @@ function BallRenderer(thecanvas){
this.size = this.width * this.height;
this.pointLayer = new Uint8ClampedArray(this.size * 4);
this.radius = 30;
this.drawnTemp = [];
this.drawnTemp = {};
this.prof = 0;
this.gradient = {};
}
@ -51,19 +51,18 @@ BallRenderer.prototype = {
return Math.sqrt( xs + ys );
}
// Assumes xi is on the left and xf is on the right
var xPointer = xi;
if(typeof this.drawnTemp[yi] === "undefined"){
while (xPointer <= xf){
var alpha = this.map_range(lineDistance(xPointer, yi), 0, this.radius, 30, 0);
this.addPoint(xPointer, yi, alpha);
xPointer ++;
while (xi <= xf){
var alpha = this.map_range(lineDistance(xi, yi), 0, this.radius, 30, 0);
this.addPoint(xi, yi, alpha);
xi ++;
}
this.drawnTemp[yi]=true;
}
},
contour: function(granularity){
var step = 255/granularity;
var i = 0, a = new Uint8ClampedArray(granularity+1), c=0;
var i = 1, a = new Uint8ClampedArray(granularity+1), c=0;
while (i<255){
a[c] = i;
i += step;