pixi.js/lib/scene/container/utils/updateLocalTransform.js

PixiJS — The HTML5 Creation Engine =============

'use strict';

"use strict";
function updateLocalTransform(lt, container) {
  const scale = container._scale;
  const pivot = container._pivot;
  const position = container._position;
  const sx = scale._x;
  const sy = scale._y;
  const px = pivot._x;
  const py = pivot._y;
  lt.a = container._cx * sx;
  lt.b = container._sx * sx;
  lt.c = container._cy * sy;
  lt.d = container._sy * sy;
  lt.tx = position._x - (px * lt.a + py * lt.c);
  lt.ty = position._y - (px * lt.b + py * lt.d);
}

exports.updateLocalTransform = updateLocalTransform;
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