New Particle Manager renderer functions

Author: photonstorm

v3/src/gameobjects/particles/ParticleManagerCanvasRenderer.js

@@ -0,0 +1,61 @@
+var GameObject = require('../GameObject');
+
+var ParticleManagerCanvasRenderer = function (renderer, emitterManager, interpolationPercentage, camera)
+{
+    var emitters = emitterManager.emitters;
+
+    if (emitters.length === 0 || GameObject.RENDER_MASK !== emitterManager.renderFlags || (emitterManager.cameraFilter > 0 && (emitterManager.cameraFilter & camera._id)))
+    {
+        return;
+    }
+
+    for (var i = 0; i < emitters.length; i++)
+    {
+        var emitter = emitters[i];
+
+        var particles = emitter.alive;
+        var length = particles.length;
+        var ctx = renderer.currentContext;
+
+        //  TODO: Move into the ctx loop below as it's now Particle specific
+        var frame = emitter.frame;
+        var dx = frame.x;
+        var dy = frame.y;
+        var width = frame.width;
+        var height = frame.height;
+        var ox = width * 0.5;
+        var oy = height * 0.5;
+
+        var lastAlpha = ctx.globalAlpha;
+        var cd = frame.canvasData;
+        var cameraScrollX = camera.scrollX * emitter.scrollFactorX;
+        var cameraScrollY = camera.scrollY * emitter.scrollFactorY;
+
+        if (renderer.currentBlendMode !== emitter.blendMode)
+        {
+            renderer.currentBlendMode = emitter.blendMode;
+            ctx.globalCompositeOperation = renderer.blendModes[emitter.blendMode];
+        }
+
+        for (var index = 0; index < length; ++index)
+        {
+            var particle = particles[index];
+            var x = -ox;
+            var y = -oy;
+            var alpha = ((particle.color >> 24) & 0xFF) / 255.0;
+
+            ctx.globalAlpha = alpha;
+        
+            ctx.save();
+            ctx.translate(particle.x - cameraScrollX * particle.scrollFactorX, particle.y - cameraScrollY * particle.scrollFactorY);
+            ctx.rotate(particle.rotation);
+            ctx.scale(particle.scaleX, particle.scaleY);
+            ctx.drawImage(frame.source.image, cd.sx, cd.sy, cd.sWidth, cd.sHeight, x, y, cd.dWidth, cd.dHeight);
+            ctx.restore();
+        }
+
+        ctx.globalAlpha = lastAlpha;
+    }
+};
+
+module.exports = ParticleManagerCanvasRenderer;

v3/src/gameobjects/particles/ParticleManagerRender.js

@@ -0,0 +1,19 @@
+var renderWebGL = require('../../utils/NOOP');
+var renderCanvas = require('../../utils/NOOP');
+
+if (WEBGL_RENDERER)
+{
+    renderWebGL = require('./ParticleManagerWebGLRenderer');
+}
+
+if (CANVAS_RENDERER)
+{
+    renderCanvas = require('./ParticleManagerCanvasRenderer');
+}
+
+module.exports = {
+
+    renderWebGL: renderWebGL,
+    renderCanvas: renderCanvas
+
+};

v3/src/gameobjects/particles/ParticleManagerWebGLRenderer.js

@@ -0,0 +1,18 @@
+var GameObject = require('../GameObject');
+
+var ParticleManagerWebGLRenderer = function (renderer, emitterManager, interpolationPercentage, camera)
+{
+    var emitters = emitterManager.emitters;
+
+    if (emitters.length === 0 || GameObject.RENDER_MASK !== emitterManager.renderFlags || (emitterManager.cameraFilter > 0 && (emitterManager.cameraFilter & camera._id)))
+    {
+        return;
+    }
+
+    for (var i = 0; i < emitters.length; i++)
+    {
+        renderer.particleRenderer.renderEmitter(emitters[i], camera);
+    }
+};
+
+module.exports = ParticleManagerWebGLRenderer;