Method setRegion

packages/melonjs/src/renderable/frameAnimation.js:275–290

* apply a texture region as the current frame: store its geometry into * `current` and hand it to the host to draw (see Sprite#setRegion). * @param {object} region - the texture region object * @returns {object} the host (for method chaining)

(region)

	 * @returns {object} the host (for method chaining)
	 */
	setRegion(region) {
		const current = this.current;
		// set the frame offset within the texture
		current.offset.setV(region.offset);
		// set angle if defined
		current.angle = typeof region.angle === "number" ? region.angle : 0;
		// update the current frame size (trimmed dimensions, used for drawing)
		current.width = region.width;
		current.height = region.height;
		// cache trim offset for drawing
		current.trim = region.trim || null;
		// hand the region to the host to apply to its own geometry; the host
		// marks itself dirty inside `_applyFrame` (the engine owns no dirty flag)
		this._applyFrame(region);
		return this.host;
	}

	/**
	 * force the current animation frame index (see {@link Sprite#setAnimationFrame}).