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about this.position on displayobject.setTransform


GBear
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hi..

i'm using 3.x with our project  and i'm testing 4.x (and i will move some good issue of 4.x like multi texture or transformstatic)

4.x's geometric values like this.position, this.scale.....  have moved to Transform Object.

and i saw following code


    /**
     * Convenience function to set the position, scale, skew and pivot at once.
     *
     * @param {number} [x=0] - The X position
     * @param {number} [y=0] - The Y position
     * @param {number} [scaleX=1] - The X scale value
     * @param {number} [scaleY=1] - The Y scale value
     * @param {number} [rotation=0] - The rotation
     * @param {number} [skewX=0] - The X skew value
     * @param {number} [skewY=0] - The Y skew value
     * @param {number} [pivotX=0] - The X pivot value
     * @param {number} [pivotY=0] - The Y pivot value
     * @return {PIXI.DisplayObject} The DisplayObject instance
     */


    DisplayObject.prototype.setTransform = function setTransform() {
        var x = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : 0;
        var y = arguments.length > 1 && arguments[1] !== undefined ? arguments[1] : 0;
        var scaleX = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : 1;
        var scaleY = arguments.length > 3 && arguments[3] !== undefined ? arguments[3] : 1;
        var rotation = arguments.length > 4 && arguments[4] !== undefined ? arguments[4] : 0;
        var skewX = arguments.length > 5 && arguments[5] !== undefined ? arguments[5] : 0;
        var skewY = arguments.length > 6 && arguments[6] !== undefined ? arguments[6] : 0;
        var pivotX = arguments.length > 7 && arguments[7] !== undefined ? arguments[7] : 0;
        var pivotY = arguments.length > 8 && arguments[8] !== undefined ? arguments[8] : 0;

        this.position.x = x;
        this.position.y = y;
        this.scale.x = !scaleX ? 1 : scaleX;
        this.scale.y = !scaleY ? 1 : scaleY;
        this.rotation = rotation;
        this.skew.x = skewX;
        this.skew.y = skewY;
        this.pivot.x = pivotX;
        this.pivot.y = pivotY;

        return this;
    };

 

there are this.position, this.scale but DisplayObject do not has them ...

can you explain how operate?

thx..
ps>  code get from pixi 4.5.6

 

thx.

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find wrapped parts

 

 {
    key: 'localTransform',
    get: function get() {
        return this.transform.localTransform;
    }

    /**wwww
     * The coordinate of the object relative to the local coordinates of the parent.
     * Assignment by value since pixi-v4.
     *
     * @member {PIXI.Point|PIXI.ObservablePoint}
     */

}, {
    key: 'position',
    get: function get() {
        return this.transform.position;
    },
    set: function set(value) // eslint-disable-line require-jsdoc
    {
        this.transform.position.copy(value);
    }

    /**
     * The scale factor of the object.
     * Assignment by value since pixi-v4.
     *
     * @member {PIXI.Point|PIXI.ObservablePoint}
     */

}, {
    key: 'scale',
    get: function get() {
        return this.transform.scale;
    },
    set: function set(value) // eslint-disable-line require-jsdoc
    {
        this.transform.scale.copy(value);
    }
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