@kitware/vtk.js/Common/DataModel/Cell.js

Visualization Toolkit for the Web

import { m as macro } from '../../macros2.js';
import vtkBoundingBox from './BoundingBox.js';
import vtkPoints from '../Core/Points.js';

// ----------------------------------------------------------------------------
// vtkCell methods
// ----------------------------------------------------------------------------

function vtkCell(publicAPI, model) {
  // Set our className
  model.classHierarchy.push('vtkCell');
  publicAPI.initialize = (points, pointIdsList = null) => {
    if (!pointIdsList) {
      model.points = points;
      model.pointsIds = new Array(points.getNumberOfPoints());
      for (let i = points.getNumberOfPoints() - 1; i >= 0; --i) {
        model.pointsIds[i] = i;
      }
    } else {
      model.pointsIds = pointIdsList;
      let triangleData = model.points.getData();
      if (triangleData.length !== 3 * model.pointsIds.length) {
        triangleData = macro.newTypedArray(points.getDataType(), 3 * model.pointsIds.length);
      }
      const pointsData = points.getData();
      model.pointsIds.forEach((pointId, index) => {
        // const start = 3 * pointId;
        // pointsData.set(p.subarray(start, start + 3), 3 * index);
        let pointOffset = 3 * pointId;
        let trianglePointOffset = 3 * index;
        triangleData[trianglePointOffset] = pointsData[pointOffset];
        triangleData[++trianglePointOffset] = pointsData[++pointOffset];
        triangleData[++trianglePointOffset] = pointsData[++pointOffset];
      });
      model.points.setData(triangleData);
    }
  };
  publicAPI.getBounds = () => model.points.getBounds();
  publicAPI.getLength2 = () => {
    const lengths = vtkBoundingBox.getLengths(publicAPI.getBounds());
    return lengths[0] * lengths[0] + lengths[1] * lengths[1] + lengths[2] * lengths[2];
  };
  publicAPI.getParametricDistance = pcoords => {
    let pDist;
    let pDistMax = 0.0;
    for (let i = 0; i < 3; i++) {
      if (pcoords[i] < 0.0) {
        pDist = -pcoords[i];
      } else if (pcoords[i] > 1.0) {
        pDist = pcoords[i] - 1.0;
      } else {
        // inside the cell in the parametric direction
        pDist = 0.0;
      }
      if (pDist > pDistMax) {
        pDistMax = pDist;
      }
    }
    return pDistMax;
  };
  publicAPI.getNumberOfPoints = () => model.points.getNumberOfPoints();
  publicAPI.deepCopy = cell => {
    cell.initialize(model.points, model.pointsIds);
  };
  publicAPI.getCellDimension = () => {}; // virtual
  publicAPI.intersectWithLine = (p1, p2, tol, t, x, pcoords, subId) => {}; // virtual
  publicAPI.evaluatePosition = (x, closestPoint, subId, pcoords, dist2, weights) => {
    macro.vtkErrorMacro('vtkCell.evaluatePosition is not implemented.');
  }; // virtual
}

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

const DEFAULT_VALUES = {
  bounds: [-1, -1, -1, -1, -1, -1],
  pointsIds: []
};

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

function extend(publicAPI, model, initialValues = {}) {
  Object.assign(model, DEFAULT_VALUES, initialValues);
  macro.obj(publicAPI, model);
  if (!model.points) {
    model.points = vtkPoints.newInstance();
  }
  macro.get(publicAPI, model, ['points', 'pointsIds']);
  vtkCell(publicAPI, model);
}

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

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

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

var vtkCell$1 = {
  newInstance,
  extend
};

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