@kitware/vtk.js/Rendering/Misc/SynchronizableRenderWindow/BehaviorManager/CameraSynchronizer.js

Visualization Toolkit for the Web

import { n as newInstance$1, o as obj, e as setGet, l as setGetArray, h as chain } from '../../../../macros2.js';
import { l as normalize } from '../../../../Common/Core/Math/index.js';

const MODE_RESET_CAMERA = 'resetcamera';
const MODE_ORIENTATION = 'orientation';
const MODE_SAME = 'same';
const SynchronizationMode = {
  MODE_RESET_CAMERA,
  MODE_ORIENTATION,
  MODE_SAME
};
function vtkCameraSynchronizer(publicAPI, model) {
  model.classHierarchy.push('vtkCameraSynchronizer');
  const cameraState = new Float64Array(9);
  const direction = new Float64Array(3);
  const subscriptions = [];
  function updateListeners() {
    while (subscriptions.length) {
      subscriptions.pop().unsubscribe();
    }
    if (!model.srcRenderer || !model.dstRenderer) {
      return;
    }
    const srcCamera = model.srcRenderer.getActiveCamera();
    const interactor = model.srcRenderer.getRenderWindow().getInteractor();
    subscriptions.push(srcCamera.onModified(() => {
      if (!interactor.isAnimating()) {
        publicAPI.update();
      }
    }));
    subscriptions.push(interactor.onAnimation(publicAPI.update));
    subscriptions.push(interactor.onEndAnimation(publicAPI.update));
  }

  // Update listeners automatically
  model._onSrcRendererChanged = updateListeners;
  model._onDstRendererChanged = updateListeners;
  function updatePreviousValues(position, focalPoint, viewUp) {
    if (cameraState[0] !== position[0] || cameraState[1] !== position[1] || cameraState[2] !== position[2] || cameraState[3] !== focalPoint[0] || cameraState[4] !== focalPoint[1] || cameraState[5] !== focalPoint[2] || cameraState[6] !== viewUp[0] || cameraState[7] !== viewUp[1] || cameraState[8] !== viewUp[2]) {
      cameraState[0] = position[0];
      cameraState[1] = position[1];
      cameraState[2] = position[2];
      cameraState[3] = focalPoint[0];
      cameraState[4] = focalPoint[1];
      cameraState[5] = focalPoint[2];
      cameraState[6] = viewUp[0];
      cameraState[7] = viewUp[1];
      cameraState[8] = viewUp[2];
      return cameraState;
    }
    return false;
  }
  publicAPI.update = () => {
    if (!model.active || !model.srcRenderer || !model.dstRenderer) {
      return;
    }
    const srcCamera = model.srcRenderer.getActiveCamera();
    const dstCamera = model.dstRenderer.getActiveCamera();
    const position = srcCamera.getReferenceByName('position');
    const focalPoint = srcCamera.getReferenceByName('focalPoint');
    const viewUp = srcCamera.getReferenceByName('viewUp');
    const change = updatePreviousValues(position, focalPoint, viewUp);
    if (!change) {
      return;
    }
    if (model.mode === MODE_ORIENTATION) {
      direction[0] = change[0] - change[3];
      direction[1] = change[1] - change[4];
      direction[2] = change[2] - change[5];
      normalize(direction);
      dstCamera.setPosition(model.focalPoint[0] + model.distance * direction[0], model.focalPoint[1] + model.distance * direction[1], model.focalPoint[2] + model.distance * direction[2]);
      dstCamera.setFocalPoint(model.focalPoint[0], model.focalPoint[1], model.focalPoint[2]);
      dstCamera.setViewUp(change[6], change[7], change[8]);
    } else {
      dstCamera.setPosition(change[0], change[1], change[2]);
      dstCamera.setFocalPoint(change[3], change[4], change[5]);
      dstCamera.setViewUp(change[6], change[7], change[8]);
    }
    if (model.mode === MODE_RESET_CAMERA) {
      model.dstRenderer.resetCamera();
    }
  };
  publicAPI.delete = chain(() => publicAPI.setSrcRenderer(null),
  // Will clear any listener
  publicAPI.delete);

  // If src/dstRenderer provided at constructor register listeners
  updateListeners();
}
const DEFAULT_VALUES = {
  mode: MODE_ORIENTATION,
  focalPoint: [0, 0, 0],
  distance: 6.8,
  active: true
  // srcRenderer: null,
  // dstRenderer: null,
};
function extend(publicAPI, model, initialValues = {}) {
  Object.assign(model, DEFAULT_VALUES, initialValues);

  // Build VTK API
  obj(publicAPI, model);
  setGet(publicAPI, model, ['mode', 'active', 'srcRenderer', 'dstRenderer', 'distance']);
  setGetArray(publicAPI, model, ['focalPoint'], 3, 0);

  // Object methods
  vtkCameraSynchronizer(publicAPI, model);
}

// ----------------------------------------------------------------------------

const newInstance = newInstance$1(extend, 'vtkCameraSynchronizer');
var vtkCameraSynchronizer$1 = {
  newInstance,
  extend,
  SynchronizationMode
};

export { DEFAULT_VALUES, MODE_ORIENTATION, MODE_RESET_CAMERA, MODE_SAME, SynchronizationMode, vtkCameraSynchronizer$1 as default, extend, newInstance };