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VectorCanvas.prototype.applyTransformParams = function (scale, transX, transY) {
  if (this.mode === 'svg') {
    this.rootGroup.setAttribute('transform', 'scale(' + scale + ') translate(' + transX + ', ' + transY + ')');
  } else {
    this.rootGroup.coordorigin = (this.width - transX) + ',' + (this.height - transY);
    this.rootGroup.coordsize = this.width / scale + ',' + this.height / scale;
  }
};