Method _projectVertices

packages/melonjs/src/renderable/mesh.js:577–591

* Project all vertices through projectionMatrix × currentTransform * and store the results in `this.vertices`. * @param {number} [offsetX=0] - x offset added to each projected vertex * @param {number} [offsetY=0] - y offset added to each projected vertex * @param {number} [zScale=0] - scale

(offsetX = 0, offsetY = 0, zScale = 0)

	 * @ignore
	 */
	_projectVertices(offsetX = 0, offsetY = 0, zScale = 0) {
		_combinedMatrix.copy(this.projectionMatrix);
		_combinedMatrix.multiply(this.currentTransform);
		projectVertices(
			this.originalVertices,
			this.vertices,
			this.vertexCount,
			_combinedMatrix.val,
			this.width,
			this.height,
			offsetX,
			offsetY,
			zScale,
		);
	}

	/**
	 * Project vertices into **world space** for the Camera3d render path.