@kitware/vtk.js/Rendering/Core/Actor.js

Visualization Toolkit for the Web

import _defineProperty from '@babel/runtime/helpers/defineProperty';
import { mat4, vec3 } from 'gl-matrix';
import macro from '../../macros.js';
import vtkBoundingBox from '../../Common/DataModel/BoundingBox.js';
import vtkProp3D from './Prop3D.js';
import vtkProperty from './Property.js';

function ownKeys(object, enumerableOnly) { var keys = Object.keys(object); if (Object.getOwnPropertySymbols) { var symbols = Object.getOwnPropertySymbols(object); enumerableOnly && (symbols = symbols.filter(function (sym) { return Object.getOwnPropertyDescriptor(object, sym).enumerable; })), keys.push.apply(keys, symbols); } return keys; }

function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = null != arguments[i] ? arguments[i] : {}; i % 2 ? ownKeys(Object(source), !0).forEach(function (key) { _defineProperty(target, key, source[key]); }) : Object.getOwnPropertyDescriptors ? Object.defineProperties(target, Object.getOwnPropertyDescriptors(source)) : ownKeys(Object(source)).forEach(function (key) { Object.defineProperty(target, key, Object.getOwnPropertyDescriptor(source, key)); }); } return target; }
var vtkDebugMacro = macro.vtkDebugMacro; // ----------------------------------------------------------------------------
// vtkActor methods
// ----------------------------------------------------------------------------

function vtkActor(publicAPI, model) {
  // Set our className
  model.classHierarchy.push('vtkActor'); // Capture 'parentClass' api for internal use

  var superClass = _objectSpread({}, publicAPI);

  publicAPI.getActors = function () {
    return [publicAPI];
  };

  publicAPI.getIsOpaque = function () {
    if (model.forceOpaque) {
      return true;
    }

    if (model.forceTranslucent) {
      return false;
    } // make sure we have a property


    if (!model.property) {
      // force creation of a property
      publicAPI.getProperty();
    }

    var isOpaque = model.property.getOpacity() >= 1.0; // are we using an opaque texture, if any?

    isOpaque = isOpaque && (!model.texture || !model.texture.isTranslucent()); // are we using an opaque scalar array, if any?

    isOpaque = isOpaque && (!model.mapper || model.mapper.getIsOpaque());
    return isOpaque;
  };

  publicAPI.hasTranslucentPolygonalGeometry = function () {
    if (model.mapper === null) {
      return false;
    } // make sure we have a property


    if (model.property === null) {
      // force creation of a property
      publicAPI.setProperty(publicAPI.makeProperty());
    } // is this actor opaque ?


    return !publicAPI.getIsOpaque();
  };

  publicAPI.makeProperty = vtkProperty.newInstance;

  publicAPI.getProperty = function () {
    if (model.property === null) {
      model.property = publicAPI.makeProperty();
    }

    return model.property;
  };

  publicAPI.getBounds = function () {
    if (model.mapper === null) {
      return model.bounds;
    } // Check for the special case when the mapper's bounds are unknown


    var bds = model.mapper.getBounds();

    if (!bds || bds.length !== 6) {
      return bds;
    } // Check for the special case when the actor is empty.


    if (bds[0] > bds[1]) {
      model.mapperBounds = bds.concat(); // copy the mapper's bounds

      model.bounds = [1, -1, 1, -1, 1, -1];
      model.boundsMTime.modified();
      return bds;
    } // Check if we have cached values for these bounds - we cache the
    // values returned by model.mapper.getBounds() and we store the time
    // of caching. If the values returned this time are different, or
    // the modified time of this class is newer than the cached time,
    // then we need to rebuild.


    if (!model.mapperBounds || bds[0] !== model.mapperBounds[0] || bds[1] !== model.mapperBounds[1] || bds[2] !== model.mapperBounds[2] || bds[3] !== model.mapperBounds[3] || bds[4] !== model.mapperBounds[4] || bds[5] !== model.mapperBounds[5] || publicAPI.getMTime() > model.boundsMTime.getMTime()) {
      vtkDebugMacro('Recomputing bounds...');
      model.mapperBounds = bds.concat(); // copy the mapper's bounds

      var bbox = [];
      vtkBoundingBox.getCorners(bds, bbox);
      publicAPI.computeMatrix();
      var tmp4 = new Float64Array(16);
      mat4.transpose(tmp4, model.matrix);
      bbox.forEach(function (pt) {
        return vec3.transformMat4(pt, pt, tmp4);
      });
      /* eslint-disable no-multi-assign */

      model.bounds[0] = model.bounds[2] = model.bounds[4] = Number.MAX_VALUE;
      model.bounds[1] = model.bounds[3] = model.bounds[5] = -Number.MAX_VALUE;
      /* eslint-enable no-multi-assign */

      model.bounds = model.bounds.map(function (d, i) {
        return i % 2 === 0 ? bbox.reduce(function (a, b) {
          return a > b[i / 2] ? b[i / 2] : a;
        }, d) : bbox.reduce(function (a, b) {
          return a < b[(i - 1) / 2] ? b[(i - 1) / 2] : a;
        }, d);
      });
      model.boundsMTime.modified();
    }

    return model.bounds;
  };

  publicAPI.getMTime = function () {
    var mt = superClass.getMTime();

    if (model.property !== null) {
      var time = model.property.getMTime();
      mt = time > mt ? time : mt;
    }

    if (model.backfaceProperty !== null) {
      var _time = model.backfaceProperty.getMTime();

      mt = _time > mt ? _time : mt;
    }

    return mt;
  };

  publicAPI.getRedrawMTime = function () {
    var mt = model.mtime;

    if (model.mapper !== null) {
      var time = model.mapper.getMTime();
      mt = time > mt ? time : mt;

      if (model.mapper.getInput() !== null) {
        // FIXME !!! getInputAlgorithm / getInput
        model.mapper.getInputAlgorithm().update();
        time = model.mapper.getInput().getMTime();
        mt = time > mt ? time : mt;
      }
    }

    return mt;
  };

  publicAPI.getSupportsSelection = function () {
    return model.mapper ? model.mapper.getSupportsSelection() : false;
  };

  publicAPI.processSelectorPixelBuffers = function (selector, pixelOffsets) {
    if (model.mapper && model.mapper.processSelectorPixelBuffers) {
      model.mapper.processSelectorPixelBuffers(selector, pixelOffsets);
    }
  };
} // ----------------------------------------------------------------------------
// Object factory
// ----------------------------------------------------------------------------


var DEFAULT_VALUES = {
  mapper: null,
  property: null,
  backfaceProperty: null,
  forceOpaque: false,
  forceTranslucent: false,
  bounds: [1, -1, 1, -1, 1, -1]
}; // ----------------------------------------------------------------------------

function extend(publicAPI, model) {
  var initialValues = arguments.length > 2 && arguments[2] !== undefined ? arguments[2] : {};
  Object.assign(model, DEFAULT_VALUES, initialValues); // Inheritance

  vtkProp3D.extend(publicAPI, model, initialValues); // vtkTimeStamp

  model.boundsMTime = {};
  macro.obj(model.boundsMTime); // Build VTK API

  macro.set(publicAPI, model, ['property']);
  macro.setGet(publicAPI, model, ['backfaceProperty', 'forceOpaque', 'forceTranslucent', 'mapper']); // Object methods

  vtkActor(publicAPI, model);
} // ----------------------------------------------------------------------------

var newInstance = macro.newInstance(extend, 'vtkActor'); // ----------------------------------------------------------------------------

var vtkActor$1 = {
  newInstance: newInstance,
  extend: extend
};

export { vtkActor$1 as default, extend, newInstance };