@acransac/vtk.js/Sources/Interaction/Manipulators/VRButtonPanManipulator/index.js

Visualization Toolkit for the Web

import macro from 'vtk.js/Sources/macro';
import vtkCompositeVRManipulator from 'vtk.js/Sources/Interaction/Manipulators/CompositeVRManipulator';
import {
  Device,
  Input,
} from 'vtk.js/Sources/Rendering/Core/RenderWindowInteractor/Constants';
import { States } from 'vtk.js/Sources/Rendering/Core/InteractorStyle/Constants';

// ----------------------------------------------------------------------------
// vtkVRButtonPanManipulator methods
// ----------------------------------------------------------------------------

function vtkVRButtonPanManipulator(publicAPI, model) {
  // Set our className
  model.classHierarchy.push('vtkVRButtonPanManipulator');

  publicAPI.onButton3D = (
    interactorStyle,
    renderer,
    state,
    device,
    input,
    pressed
  ) => {
    if (pressed) {
      interactorStyle.startCameraPose();
    } else if (state === States.IS_CAMERA_POSE) {
      interactorStyle.endCameraPose();
    }
  };

  publicAPI.onMove3D = (interactorStyle, renderer, state, data) => {
    if (state !== States.IS_CAMERA_POSE) {
      return;
    }

    // move the world in the direction of the
    // controller
    const camera = renderer.getActiveCamera();
    const oldTrans = camera.getPhysicalTranslation();

    // look at the y axis to determine how fast / what direction to move
    const speed = data.gamepad.axes[1];

    // 0.05 meters / frame movement
    const pscale = (speed * 0.05) / camera.getPhysicalScale();

    // convert orientation to world coordinate direction
    const dir = camera.physicalOrientationToWorldDirection(data.orientation);

    camera.setPhysicalTranslation(
      oldTrans[0] + dir[0] * pscale,
      oldTrans[1] + dir[1] * pscale,
      oldTrans[2] + dir[2] * pscale
    );
  };
}

// ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------

const DEFAULT_VALUES = {
  device: Device.RightController,
  input: Input.TrackPad,
};

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

export function extend(publicAPI, model, initialValues = {}) {
  Object.assign(model, DEFAULT_VALUES, initialValues);

  macro.obj(publicAPI, model);
  vtkCompositeVRManipulator.extend(publicAPI, model, initialValues);

  // Object specific methods
  vtkVRButtonPanManipulator(publicAPI, model);
}

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

export const newInstance = macro.newInstance(
  extend,
  'vtkVRButtonPanManipulator'
);

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

export default { newInstance, extend };