ami.js/examples/loader_nrrd/loader_nrrd.js

<p align="center"> <img src="https://cloud.githubusercontent.com/assets/214063/23213764/78ade038-f90c-11e6-8208-4fcade5f3832.png" width="60%"> </p>

/* globals Stats*/

import ControlsTrackball from 'base/controls/controls.trackball';
import HelpersStack from 'base/helpers/helpers.stack';
import LoadersVolume from 'base/loaders/loaders.volume';

// standard global variables
let controls;
let renderer;
let stats;
let scene;
let camera;
let stackHelper;
let threeD;

function init() {
  // this function is executed on each animation frame
  function animate() {
    controls.update();
    renderer.render(scene, camera);
    stats.update();

    // request new frame
    requestAnimationFrame(function() {
      animate();
    });
  }

  // renderer
  threeD = document.getElementById('r3d');
  renderer = new THREE.WebGLRenderer({
    antialias: true,
  });
  renderer.setSize(threeD.offsetWidth, threeD.offsetHeight);
  renderer.setClearColor(0x673AB7, 1);
  renderer.setPixelRatio(window.devicePixelRatio);
  threeD.appendChild(renderer.domElement);

  // stats
  stats = new Stats();
  threeD.appendChild(stats.domElement);

  // scene
  scene = new THREE.Scene();

  // camera
  camera =
    new THREE.PerspectiveCamera(45, threeD.offsetWidth / threeD.offsetHeight, 1, 10000000);
  camera.position.x = 250;
  camera.position.y = 250;
  camera.position.z = 250;

  scene.add(new THREE.AmbientLight(0x353535));
  let directionalLight = new THREE.DirectionalLight(0xffffff, 1);
  directionalLight.position.set(200, 200, 1000).normalize();
  scene.add(directionalLight);

  let directionalLight2 = new THREE.DirectionalLight(0xffffff, 1);
  directionalLight2.position.set(-200, -200, -1000).normalize();
  scene.add(directionalLight2);

  // controls
  controls = new ControlsTrackball(camera, threeD);
  controls.rotateSpeed = 1.4;
  controls.zoomSpeed = 1.2;
  controls.panSpeed = 0.8;

  animate();
}

window.onload = function() {
  // init threeJS...
  init();

  // load vtk file
  let loader1 = new THREE.VTKLoader();
  loader1.
    load('https://cdn.rawgit.com/FNNDSC/data/master/vtk/marc_avf/avf.vtk',
      function(geometry) {
        geometry.computeVertexNormals();
        let material = new THREE.MeshLambertMaterial({
          shading: THREE.SmoothShading,
          color: 0xE91E63,
          side: THREE.DoubleSide});
        let mesh = new THREE.Mesh(geometry, material);
        let RASToLPS = new THREE.Matrix4();
        RASToLPS.set(-1, 0, 0, 0,
                    0, -1, 0, 0,
                    0, 0, 1, 0,
                    0, 0, 0, 1);
        mesh.applyMatrix(RASToLPS);
        scene.add(mesh);
  });

  // instantiate the loader
  // it loads and parses the dicom image
  let loader = new LoadersVolume(threeD);
  loader.
    load('https://cdn.rawgit.com/FNNDSC/data/master/nifti/marc_avf/avf_float_32.nii.gz')
  .then(function() {
    // make a proper function for this guy...
    let series = loader.data[0].mergeSeries(loader.data)[0];
    let stack = series.stack[0];
    stackHelper = new HelpersStack(stack);
    stackHelper.bbox.color = 0xF9F9F9;
    stackHelper.border.color = 0xF9F9F9;
    scene.add(stackHelper);

    // update camrea's and control's target
    let centerLPS = stackHelper.stack.worldCenter();
    camera.lookAt(centerLPS.x, centerLPS.y, centerLPS.z);
    camera.updateProjectionMatrix();
    controls.target.set(centerLPS.x, centerLPS.y, centerLPS.z);

    loader.free();
    loader = null;

    function onWindowResize() {
      camera.aspect = window.innerWidth / window.innerHeight;
      camera.updateProjectionMatrix();

      renderer.setSize(window.innerWidth, window.innerHeight);
    }

    window.addEventListener('resize', onWindowResize, false);
  })
  .catch(function(error) {
    window.console.log('oops... something went wrong...');
    window.console.log(error);
  });
};