@kitware/vtk.js/Widgets/Representations/OutlineContextRepresentation.js

Visualization Toolkit for the Web

import { m as macro } from '../../macros2.js';
import vtkActor from '../../Rendering/Core/Actor.js';
import vtkContextRepresentation from './ContextRepresentation.js';
import vtkMapper from '../../Rendering/Core/Mapper.js';
import vtkPolyData from '../../Common/DataModel/PolyData.js';
import vtkBoundingBox from '../../Common/DataModel/BoundingBox.js';
import { LINE_ARRAY, BOUNDS_MAP } from '../../Filters/General/OutlineFilter.js';

// ----------------------------------------------------------------------------
// vtkOutlineContextRepresentation methods
// ----------------------------------------------------------------------------

// Represents a box outline given 8 points as corners.
// Does not work with an arbitrary set of points. An oriented bounding box
// algorithm may be implemented in the future.
function vtkOutlineContextRepresentation(publicAPI, model) {
  // Set our className
  model.classHierarchy.push('vtkOutlineContextRepresentation');

  // internal bounding box
  model.bbox = [...vtkBoundingBox.INIT_BOUNDS];

  // --------------------------------------------------------------------------
  // Internal polydata dataset
  // --------------------------------------------------------------------------

  model.internalPolyData = vtkPolyData.newInstance({
    mtime: 0
  });
  model.points = new Float32Array(8 * 3);
  model.internalPolyData.getPoints().setData(model.points, 3);
  model.internalPolyData.getLines().setData(Uint16Array.from(LINE_ARRAY));

  // --------------------------------------------------------------------------
  // Generic rendering pipeline
  // --------------------------------------------------------------------------

  model.mapper = vtkMapper.newInstance({
    scalarVisibility: false
  });
  model.actor = vtkActor.newInstance({
    parentProp: publicAPI
  });
  model.actor.getProperty().setEdgeColor(...model.edgeColor);
  model.mapper.setInputConnection(publicAPI.getOutputPort());
  model.actor.setMapper(model.mapper);
  publicAPI.addActor(model.actor);

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

  publicAPI.requestData = (inData, outData) => {
    const list = publicAPI.getRepresentationStates(inData[0]).filter(state => state.getOrigin && state.getOrigin());
    vtkBoundingBox.reset(model.bbox);
    for (let i = 0; i < list.length; i++) {
      const pt = list[i].getOrigin();
      if (pt) {
        vtkBoundingBox.addPoint(model.bbox, ...pt);
      }
    }

    // BOUNDS_MAP.length should equal model.points.length
    for (let i = 0; i < BOUNDS_MAP.length; i++) {
      model.points[i] = model.bbox[BOUNDS_MAP[i]];
    }
    model.internalPolyData.getPoints().modified();
    model.internalPolyData.modified();
    outData[0] = model.internalPolyData;
  };
}

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

const DEFAULT_VALUES = {
  edgeColor: [1, 1, 1]
};

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

function extend(publicAPI, model, initialValues = {}) {
  Object.assign(model, DEFAULT_VALUES, initialValues);
  vtkContextRepresentation.extend(publicAPI, model, initialValues);
  macro.setGetArray(publicAPI, model, ['edgeColor'], 3);
  macro.get(publicAPI, model, ['mapper', 'actor']);

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

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

const newInstance = macro.newInstance(extend, 'vtkOutlineContextRepresentation');

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

var vtkOutlineContextRepresentation$1 = {
  newInstance,
  extend
};

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