cesiumDemo/Source/Workers/CylinderGeometryLibrary-1a22ba0e.js

/* This file is automatically rebuilt by the Cesium build process. */
define(['exports', './Math-fa6e45cb'], 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;

});