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Improve performance in Particle.prototype.draw() #28

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Improve performance in Particle.prototype.draw() #28

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5 changes: 3 additions & 2 deletions jquery.particleground.js
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Original file line number Diff line number Diff line change
Expand Up @@ -51,6 +51,7 @@
var paused = false;

options = extend({}, window[pluginName].defaults, options);
var proximityS2 = options.proximity * options.proximity;

/**
* Init
Expand Down Expand Up @@ -243,10 +244,10 @@
// Pythagorus theorum to get distance between two points
var a = this.position.x - p2.position.x
var b = this.position.y - p2.position.y
var dist = Math.sqrt((a * a) + (b * b)).toFixed(2);
var distS2 = (a * a) + (b * b);

// If the two particles are in proximity, join them
if (dist < options.proximity) {
if (distS2 < proximityS2) {
ctx.moveTo(this.position.x + this.parallaxOffsetX, this.position.y + this.parallaxOffsetY);
if (options.curvedLines) {
ctx.quadraticCurveTo(Math.max(p2.position.x, p2.position.x), Math.min(p2.position.y, p2.position.y), p2.position.x + p2.parallaxOffsetX, p2.position.y + p2.parallaxOffsetY);
Expand Down
4 changes: 2 additions & 2 deletions jquery.particleground.min.js
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