Function morph

packages/engine/Source/Scene/SceneTransitioner.js:891–921

()

  scene._mode = SceneMode.MORPHING;

  function morph() {
    camera.frustum = cameraCV.frustum.clone();

    const startPos = Cartesian3.clone(camera.position, scratch3DToCVStartPos);
    const startDir = Cartesian3.clone(camera.direction, scratch3DToCVStartDir);
    const startUp = Cartesian3.clone(camera.up, scratch3DToCVStartUp);
    startPos.z = endPos.z;

    function update(value) {
      columbusViewMorph(startPos, endPos, value.time, camera.position);
      columbusViewMorph(startDir, endDir, value.time, camera.direction);
      columbusViewMorph(startUp, endUp, value.time, camera.up);
      Cartesian3.cross(camera.direction, camera.up, camera.right);
      Cartesian3.normalize(camera.right, camera.right);
    }
    const tween = scene.tweens.add({
      duration: duration,
      easingFunction: EasingFunction.QUARTIC_OUT,
      startObject: {
        time: 0.0,
      },
      stopObject: {
        time: 1.0,
      },
      update: update,
      complete: function () {
        complete(transitioner);
      },
    });
    transitioner._currentTweens.push(tween);
  }

  if (transitioner._morphToOrthographic) {
    morph();