Method _draw

modules/core/GraphicsSystem.js:535–579

* _draw * The "Pixi" part of the drawing. * Where it converts Pixi geometries into WebGL instructions.

()

   * Where it converts Pixi geometries into WebGL instructions.
   */
  _draw() {
    // Resize Pixi canvas if needed..
    // It will clear the canvas, so do this immediately before we render.
    const pixiDims = this._pixiViewport.dimensions;
    const canvasDims = [this.pixi.screen.width, this.pixi.screen.height];

    if (!vecEqual(pixiDims, canvasDims)) {
      const [w, h] = pixiDims;
      // Resize supersurface and overlay to cover the screen dimensions.
      const ssnode = this.supersurface;
      ssnode.style.width = `${w}px`;
      ssnode.style.height = `${h}px`;
      const onode = this.overlay;
      onode.style.width = `${w}px`;
      onode.style.height = `${h}px`;

      // Resize pixi canvas
      const renderer = this.pixi.renderer;
      renderer.resize(w, h);
    }

    // Let's go!
    this.pixi.render();

// multiview?  it renders but is not interactive
//    this.pixi.renderer.render({
//      container: this.stage,
//      target: this.surface
//    });

    // Remove any temporary parent transform..
    if (this._isTempTransformed) {
      utilSetTransform(this.supersurface, 0, 0, 1, 0);
      utilSetTransform(this.overlay, 0, 0, 1, 0);
      this._isTempTransformed = false;
      this.emit('move');
    }

    this._prevTransform = this.context.viewport.transform.props;
    this._timeToNextRender = THROTTLE;

    this._drawPending = false;
    this.emit('draw');
    this._frame++;
  }


  /**