TransformNode.prototype.render = function()

in seriously.js [4553:4608]
45 lines of code
13 McCabe index (conditional complexity)

		TransformNode.prototype.render = function (renderTransform) {
			if (!this.source) {
				if (this.transformDirty) {
					mat4.copy(this.cumulativeMatrix, this.matrix);
					this.transformDirty = false;
				}
				this.texture = null;
				this.dirty = false;

				return;
			}

			this.source.render();

			if (this.transformDirty) {
				if (this.transformed) {
					//use this.matrix
					if (this.source.cumulativeMatrix) {
						mat4.multiply(this.cumulativeMatrix, this.matrix, this.source.cumulativeMatrix);
					} else {
						mat4.copy(this.cumulativeMatrix, this.matrix);
					}
				} else {
					//copy source.cumulativeMatrix
					mat4.copy(this.cumulativeMatrix, this.source.cumulativeMatrix || identity);
				}

				this.transformDirty = false;
			}

			if (renderTransform && gl) {
				if (this.renderDirty) {
					if (!this.frameBuffer) {
						this.uniforms = {
							resolution: [this.width, this.height]
						};
						this.frameBuffer = new FrameBuffer(gl, this.width, this.height);
					}

					this.uniforms.source = this.source.texture;
					this.uniforms.transform = this.cumulativeMatrix || identity;
					draw(baseShader, rectangleModel, this.uniforms, this.frameBuffer.frameBuffer, this);

					this.renderDirty = false;
				}
				this.texture = this.frameBuffer.texture;
			} else if (this.source) {
				this.texture = this.source.texture;
			} else {
				this.texture = null;
			}

			this.dirty = false;

			return this.texture;
		};