Method preDraw

packages/melonjs/src/renderable/imagelayer.js:241–260

* Override the default preDraw to skip the base class's anchor offset * translation and `autoTransform` application — `ImageLayer.draw()` * computes its own world-space position from the viewport, the parallax * `ratio`, anchor, and zoom, so applying anchor/transform here would * double-tran

(renderer)

	 * @ignore
	 */
	preDraw(renderer) {
		// save the context
		renderer.save();

		// apply the defined alpha value
		renderer.setGlobalAlpha(renderer.globalAlpha() * this.getOpacity());

		// delegate post-effect setup to the renderer (custom shader / postEffects)
		if (!this._postEffectManaged) {
			renderer.beginPostEffect(this);
		}

		// apply the defined tint
		renderer.setTint(this.tint);

		// apply blending if different from "normal"
		if (this.blendMode !== renderer.getBlendMode()) {
			renderer.setBlendMode(this.blendMode);
		}
	}

	/**
	 * draw this ImageLayer (automatically called by melonJS)