cesium_nxmap/_cesium@1.72.0@cesium/Source/Workers/CylinderGeometryLibrary-09101d37.js

/* This file is automatically rebuilt by the Cesium build process. */
define(['exports', './Math-392d0035'], function (exports, _Math) { 'use strict';

  /**
   * @private
   */
  var CylinderGeometryLibrary = {};

  /**
   * @private
   */
  CylinderGeometryLibrary.computePositions = function (
    length,
    topRadius,
    bottomRadius,
    slices,
    fill
  ) {
    var topZ = length * 0.5;
    var bottomZ = -topZ;

    var twoSlice = slices + slices;
    var size = fill ? 2 * twoSlice : twoSlice;
    var positions = new Float64Array(size * 3);
    var i;
    var index = 0;
    var tbIndex = 0;
    var bottomOffset = fill ? twoSlice * 3 : 0;
    var topOffset = fill ? (twoSlice + slices) * 3 : slices * 3;

    for (i = 0; i < slices; i++) {
      var angle = (i / slices) * _Math.CesiumMath.TWO_PI;
      var x = Math.cos(angle);
      var y = Math.sin(angle);
      var bottomX = x * bottomRadius;
      var bottomY = y * bottomRadius;
      var topX = x * topRadius;
      var topY = y * topRadius;

      positions[tbIndex + bottomOffset] = bottomX;
      positions[tbIndex + bottomOffset + 1] = bottomY;
      positions[tbIndex + bottomOffset + 2] = bottomZ;

      positions[tbIndex + topOffset] = topX;
      positions[tbIndex + topOffset + 1] = topY;
      positions[tbIndex + topOffset + 2] = topZ;
      tbIndex += 3;
      if (fill) {
        positions[index++] = bottomX;
        positions[index++] = bottomY;
        positions[index++] = bottomZ;
        positions[index++] = topX;
        positions[index++] = topY;
        positions[index++] = topZ;
      }
    }

    return positions;
  };

  exports.CylinderGeometryLibrary = CylinderGeometryLibrary;

});