ami-cjs.js/lib/helpers/helpers.volumerendering.js

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

'use strict';

Object.defineProperty(exports, "__esModule", {
  value: true
});

var _createClass = function () { function defineProperties(target, props) { for (var i = 0; i < props.length; i++) { var descriptor = props[i]; descriptor.enumerable = descriptor.enumerable || false; descriptor.configurable = true; if ("value" in descriptor) descriptor.writable = true; Object.defineProperty(target, descriptor.key, descriptor); } } return function (Constructor, protoProps, staticProps) { if (protoProps) defineProperties(Constructor.prototype, protoProps); if (staticProps) defineProperties(Constructor, staticProps); return Constructor; }; }();

var _shadersVr = require('../shaders/shaders.vr.uniform');

var _shadersVr2 = _interopRequireDefault(_shadersVr);

var _shadersVr3 = require('../shaders/shaders.vr.vertex');

var _shadersVr4 = _interopRequireDefault(_shadersVr3);

var _shadersVr5 = require('../shaders/shaders.vr.fragment');

var _shadersVr6 = _interopRequireDefault(_shadersVr5);

var _helpersMaterial = require('../helpers/helpers.material.mixin');

var _helpersMaterial2 = _interopRequireDefault(_helpersMaterial);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function _classCallCheck(instance, Constructor) { if (!(instance instanceof Constructor)) { throw new TypeError("Cannot call a class as a function"); } }

function _possibleConstructorReturn(self, call) { if (!self) { throw new ReferenceError("this hasn't been initialised - super() hasn't been called"); } return call && (typeof call === "object" || typeof call === "function") ? call : self; }

function _inherits(subClass, superClass) { if (typeof superClass !== "function" && superClass !== null) { throw new TypeError("Super expression must either be null or a function, not " + typeof superClass); } subClass.prototype = Object.create(superClass && superClass.prototype, { constructor: { value: subClass, enumerable: false, writable: true, configurable: true } }); if (superClass) Object.setPrototypeOf ? Object.setPrototypeOf(subClass, superClass) : subClass.__proto__ = superClass; } /** * Imports ***/


/**
 * @module helpers/volumerendering
 */

var HelpersVolumeRendering = function (_HelpersMaterialMixin) {
  _inherits(HelpersVolumeRendering, _HelpersMaterialMixin);

  function HelpersVolumeRendering(stack) {
    _classCallCheck(this, HelpersVolumeRendering);

    var _this = _possibleConstructorReturn(this, (HelpersVolumeRendering.__proto__ || Object.getPrototypeOf(HelpersVolumeRendering)).call(this));
    //


    _this._stack = stack;
    _this._textures = [];
    _this._shadersFragment = _shadersVr6.default;
    _this._shadersVertex = _shadersVr4.default;
    _this._uniforms = _shadersVr2.default.uniforms();
    _this._material = null;
    _this._geometry = null;

    _this._interpolation = 1; // default to trilinear interpolation

    _this._create();
    return _this;
  }

  _createClass(HelpersVolumeRendering, [{
    key: '_create',
    value: function _create() {
      this._prepareStack();
      this._prepareTexture();
      this._prepareMaterial();
      this._prepareGeometry();

      this._mesh = new THREE.Mesh(this._geometry, this._material);
      this.add(this._mesh);
    }
  }, {
    key: '_prepareStack',
    value: function _prepareStack() {
      if (!this._stack.prepared) {
        this._stack.prepare();
      }

      if (!this._stack.packed) {
        this._stack.pack();
      }
    }
  }, {
    key: '_prepareMaterial',
    value: function _prepareMaterial() {
      // compensate for the offset to only pass > 0 values to shaders
      // models > models.stack.js : _packTo8Bits
      var offset = 0;
      if (this._stack._minMax[0] < 0) {
        offset = this._stack._minMax[0];
      }

      // uniforms
      this._uniforms = _shadersVr2.default.uniforms();
      this._uniforms.uWorldBBox.value = this._stack.worldBoundingBox();
      this._uniforms.uTextureSize.value = this._stack.textureSize;
      this._uniforms.uTextureContainer.value = this._textures;
      this._uniforms.uWorldToData.value = this._stack.lps2IJK;
      this._uniforms.uNumberOfChannels.value = this._stack.numberOfChannels;
      this._uniforms.uPixelType.value = this._stack.pixelType;
      this._uniforms.uBitsAllocated.value = this._stack.bitsAllocated;
      this._uniforms.uPackedPerPixel.value = this._stack.packedPerPixel;
      this._uniforms.uWindowCenterWidth.value = [offset + this._stack.windowCenter, this._stack.windowWidth * 0.8];
      this._uniforms.uRescaleSlopeIntercept.value = [this._stack.rescaleSlope, this._stack.rescaleIntercept];
      this._uniforms.uDataDimensions.value = [this._stack.dimensionsIJK.x, this._stack.dimensionsIJK.y, this._stack.dimensionsIJK.z];
      this._uniforms.uInterpolation.value = this._interpolation;

      this._createMaterial({
        side: THREE.FrontSide,
        transparent: true
      });
    }
  }, {
    key: '_prepareGeometry',
    value: function _prepareGeometry() {
      var worldBBox = this._stack.worldBoundingBox();
      var centerLPS = this._stack.worldCenter();

      this._geometry = new THREE.BoxGeometry(worldBBox[1] - worldBBox[0], worldBBox[3] - worldBBox[2], worldBBox[5] - worldBBox[4]);
      this._geometry.applyMatrix(new THREE.Matrix4().makeTranslation(centerLPS.x, centerLPS.y, centerLPS.z));
    }
  }, {
    key: 'uniforms',
    get: function get() {
      return this._uniforms;
    },
    set: function set(uniforms) {
      this._uniforms = uniforms;
    }
  }, {
    key: 'stack',
    get: function get() {
      return this._stack;
    },
    set: function set(stack) {
      this._stack = stack;
    }
  }, {
    key: 'interpolation',
    get: function get() {
      return this._interpolation;
    },
    set: function set(interpolation) {
      this._interpolation = interpolation;
      this._uniforms.uInterpolation.value = this._interpolation;
      this._updateMaterial();
    }
  }]);

  return HelpersVolumeRendering;
}((0, _helpersMaterial2.default)(THREE.Object3D));

exports.default = HelpersVolumeRendering;
module.exports = exports['default'];