draw: function()

in effects/seriously.tvglitch.js [177:220]
38 lines of code
7 McCabe index (conditional complexity)

			draw: function (shader, model, uniforms, frameBuffer, parent) {
				var doParticles = (lastTime !== this.inputs.time),
					vsyncPeriod;

				if (lastHeight !== this.height) {
					lastHeight = this.height;
					doParticles = true;
				}

				//todo: make this configurable?
				uniforms.lineHeight = 1 / this.height;

				if (this.inputs.verticalSync) {
					vsyncPeriod = 0.2 / this.inputs.verticalSync;
					uniforms.vsync = vsyncPeriod;
				} else {
					vsyncPeriod = 1;
					uniforms.vsync = 0;
				}
				uniforms.time = (this.inputs.time % (1000 * vsyncPeriod));
				uniforms.distortion = Math.random() * this.inputs.distortion;

				//render particle canvas and attach uniform
				//todo: this is a good spot for parallel processing. ParallelArray maybe?
				if (doParticles && (this.inputs.lineSync || this.inputs.bars)) {
					particleShader.use();
					gl.viewport(0, 0, 1, this.height / 2);
					gl.bindFramebuffer(gl.FRAMEBUFFER, particleFrameBuffer.frameBuffer);
					gl.clear(gl.COLOR_BUFFER_BIT | gl.DEPTH_BUFFER_BIT);
					gl.enableVertexAttribArray(particleShader.location.particle);
					gl.bindBuffer(gl.ARRAY_BUFFER, particleBuffer);
					gl.vertexAttribPointer(particleShader.location.particle, particleBuffer.itemSize, gl.FLOAT, false, 0, 0);
					gl.enable(gl.BLEND);
					gl.blendFunc(gl.SRC_ALPHA, gl.ONE);
					particleShader.time.set(uniforms.time);
					particleShader.height.set(this.height);
					gl.drawArrays(gl.POINTS, 0, particleCount);

					lastTime = this.inputs.time;
				}
				uniforms.particles = particleFrameBuffer.texture;

				parent(shader, model, uniforms, frameBuffer);
			},