From d74b495736f0c04522ec54274b70fed0ded2878d Mon Sep 17 00:00:00 2001
From: zhongrj <646384940@qq.com>
Date: Tue, 27 Jun 2023 11:30:06 +0800
Subject: [PATCH] 任务新增导出
---
public/libs/Cesium/Workers/createVectorTilePoints.js | 90 +++++++++++++++++++++++++++++++++++++++++++++
1 files changed, 90 insertions(+), 0 deletions(-)
diff --git a/public/libs/Cesium/Workers/createVectorTilePoints.js b/public/libs/Cesium/Workers/createVectorTilePoints.js
new file mode 100644
index 0000000..4beecdc
--- /dev/null
+++ b/public/libs/Cesium/Workers/createVectorTilePoints.js
@@ -0,0 +1,90 @@
+/**
+ * Cesium - https://github.com/CesiumGS/cesium
+ *
+ * Copyright 2011-2020 Cesium Contributors
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ * Columbus View (Pat. Pend.)
+ *
+ * Portions licensed separately.
+ * See https://github.com/CesiumGS/cesium/blob/master/LICENSE.md for full licensing details.
+ */
+define(['./when-8d13db60', './Check-70bec281', './Math-61ede240', './Cartographic-fe4be337', './Cartesian2-85064f09', './AttributeCompression-84a90a13', './createTaskProcessorWorker'], function (when, Check, _Math, Cartographic, Cartesian2, AttributeCompression, createTaskProcessorWorker) { 'use strict';
+
+ var maxShort = 32767;
+
+ var scratchBVCartographic = new Cartographic.Cartographic();
+ var scratchEncodedPosition = new Cartographic.Cartesian3();
+
+ var scratchRectangle = new Cartesian2.Rectangle();
+ var scratchEllipsoid = new Cartesian2.Ellipsoid();
+ var scratchMinMaxHeights = {
+ min : undefined,
+ max : undefined
+ };
+
+ function unpackBuffer(packedBuffer) {
+ packedBuffer = new Float64Array(packedBuffer);
+
+ var offset = 0;
+ scratchMinMaxHeights.min = packedBuffer[offset++];
+ scratchMinMaxHeights.max = packedBuffer[offset++];
+
+ Cartesian2.Rectangle.unpack(packedBuffer, offset, scratchRectangle);
+ offset += Cartesian2.Rectangle.packedLength;
+
+ Cartesian2.Ellipsoid.unpack(packedBuffer, offset, scratchEllipsoid);
+ }
+
+ function createVectorTilePoints(parameters, transferableObjects) {
+ var positions = new Uint16Array(parameters.positions);
+
+ unpackBuffer(parameters.packedBuffer);
+ var rectangle = scratchRectangle;
+ var ellipsoid = scratchEllipsoid;
+ var minimumHeight = scratchMinMaxHeights.min;
+ var maximumHeight = scratchMinMaxHeights.max;
+
+ var positionsLength = positions.length / 3;
+ var uBuffer = positions.subarray(0, positionsLength);
+ var vBuffer = positions.subarray(positionsLength, 2 * positionsLength);
+ var heightBuffer = positions.subarray(2 * positionsLength, 3 * positionsLength);
+ AttributeCompression.AttributeCompression.zigZagDeltaDecode(uBuffer, vBuffer, heightBuffer);
+
+ var decoded = new Float64Array(positions.length);
+ for (var i = 0; i < positionsLength; ++i) {
+ var u = uBuffer[i];
+ var v = vBuffer[i];
+ var h = heightBuffer[i];
+
+ var lon = _Math.CesiumMath.lerp(rectangle.west, rectangle.east, u / maxShort);
+ var lat = _Math.CesiumMath.lerp(rectangle.south, rectangle.north, v / maxShort);
+ var alt = _Math.CesiumMath.lerp(minimumHeight, maximumHeight, h / maxShort);
+
+ var cartographic = Cartographic.Cartographic.fromRadians(lon, lat, alt, scratchBVCartographic);
+ var decodedPosition = ellipsoid.cartographicToCartesian(cartographic, scratchEncodedPosition);
+ Cartographic.Cartesian3.pack(decodedPosition, decoded, i * 3);
+ }
+
+ transferableObjects.push(decoded.buffer);
+
+ return {
+ positions : decoded.buffer
+ };
+ }
+ var createVectorTilePoints$1 = createTaskProcessorWorker(createVectorTilePoints);
+
+ return createVectorTilePoints$1;
+
+});
--
Gitblit v1.9.3