赣州市洪水风险预警系统三维版本
guoshilong
2023-02-27 4d8c6dd77427e8e581fda17b6b65ba86bfb7a815
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/* This file is automatically rebuilt by the Cesium build process. */
define(['exports', './Math-c5f6c994'], 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;
 
});