437 lines
20 KiB
JavaScript
437 lines
20 KiB
JavaScript
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/**
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* Cesium - https://github.com/CesiumGS/cesium
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*
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* Copyright 2011-2020 Cesium Contributors
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*
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* Columbus View (Pat. Pend.)
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*
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* Portions licensed separately.
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* See https://github.com/CesiumGS/cesium/blob/master/LICENSE.md for full licensing details.
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*/
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define(['./when-c2e8ef35', './Check-c4f3a3fc', './Math-a06249ed', './Cartesian2-a4e73c05', './Transforms-533d1994', './RuntimeError-6122571f', './WebGLConstants-4ae0db90', './ComponentDatatype-762ab5b7', './GeometryAttribute-47fb6f1a', './GeometryAttributes-57608efc', './AttributeCompression-6b12d004', './GeometryPipeline-7db33fea', './EncodedCartesian3-0e715517', './IndexDatatype-755cb3fd', './IntersectionTests-11682642', './Plane-beebe18b', './VertexFormat-5ae20b72', './arrayRemoveDuplicates-8d93d3b4', './BoundingRectangle-a263ff52', './EllipsoidTangentPlane-cf837d4c', './EllipsoidRhumbLine-33694923', './PolygonPipeline-99528590', './PolylineVolumeGeometryLibrary-dab0a545', './EllipsoidGeodesic-0b95fd8b', './PolylinePipeline-6b7c02de'], function (when, Check, _Math, Cartesian2, Transforms, RuntimeError, WebGLConstants, ComponentDatatype, GeometryAttribute, GeometryAttributes, AttributeCompression, GeometryPipeline, EncodedCartesian3, IndexDatatype, IntersectionTests, Plane, VertexFormat, arrayRemoveDuplicates, BoundingRectangle, EllipsoidTangentPlane, EllipsoidRhumbLine, PolygonPipeline, PolylineVolumeGeometryLibrary, EllipsoidGeodesic, PolylinePipeline) { 'use strict';
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var warnings = {};
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/**
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* Logs a one time message to the console. Use this function instead of
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* <code>console.log</code> directly since this does not log duplicate messages
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* unless it is called from multiple workers.
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*
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* @exports oneTimeWarning
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*
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* @param {String} identifier The unique identifier for this warning.
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* @param {String} [message=identifier] The message to log to the console.
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*
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* @example
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* for(var i=0;i<foo.length;++i) {
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* if (!defined(foo[i].bar)) {
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* // Something that can be recovered from but may happen a lot
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* oneTimeWarning('foo.bar undefined', 'foo.bar is undefined. Setting to 0.');
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* foo[i].bar = 0;
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* // ...
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* }
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* }
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*
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* @private
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*/
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function oneTimeWarning(identifier, message) {
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//>>includeStart('debug', pragmas.debug);
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if (!when.defined(identifier)) {
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throw new Check.DeveloperError('identifier is required.');
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}
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//>>includeEnd('debug');
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if (!when.defined(warnings[identifier])) {
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warnings[identifier] = true;
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console.warn(when.defaultValue(message, identifier));
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}
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}
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oneTimeWarning.geometryOutlines = 'Entity geometry outlines are unsupported on terrain. Outlines will be disabled. To enable outlines, disable geometry terrain clamping by explicitly setting height to 0.';
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oneTimeWarning.geometryZIndex = 'Entity geometry with zIndex are unsupported when height or extrudedHeight are defined. zIndex will be ignored';
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oneTimeWarning.geometryHeightReference = 'Entity corridor, ellipse, polygon or rectangle with heightReference must also have a defined height. heightReference will be ignored';
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oneTimeWarning.geometryExtrudedHeightReference = 'Entity corridor, ellipse, polygon or rectangle with extrudedHeightReference must also have a defined extrudedHeight. extrudedHeightReference will be ignored';
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function computeAttributes(combinedPositions, shape, boundingRectangle, vertexFormat) {
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var attributes = new GeometryAttributes.GeometryAttributes();
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if (vertexFormat.position) {
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attributes.position = new GeometryAttribute.GeometryAttribute({
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componentDatatype : ComponentDatatype.ComponentDatatype.DOUBLE,
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componentsPerAttribute : 3,
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values : combinedPositions
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});
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}
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var shapeLength = shape.length;
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var vertexCount = combinedPositions.length / 3;
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var length = (vertexCount - shapeLength * 2) / (shapeLength * 2);
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var firstEndIndices = PolygonPipeline.PolygonPipeline.triangulate(shape);
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var indicesCount = (length - 1) * (shapeLength) * 6 + firstEndIndices.length * 2;
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var indices = IndexDatatype.IndexDatatype.createTypedArray(vertexCount, indicesCount);
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var i, j;
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var ll, ul, ur, lr;
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var offset = shapeLength * 2;
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var index = 0;
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for (i = 0; i < length - 1; i++) {
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for (j = 0; j < shapeLength - 1; j++) {
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ll = j * 2 + i * shapeLength * 2;
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lr = ll + offset;
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ul = ll + 1;
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ur = ul + offset;
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indices[index++] = ul;
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indices[index++] = ll;
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indices[index++] = ur;
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indices[index++] = ur;
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indices[index++] = ll;
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indices[index++] = lr;
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}
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ll = shapeLength * 2 - 2 + i * shapeLength * 2;
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ul = ll + 1;
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ur = ul + offset;
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lr = ll + offset;
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indices[index++] = ul;
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indices[index++] = ll;
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indices[index++] = ur;
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indices[index++] = ur;
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indices[index++] = ll;
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indices[index++] = lr;
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}
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if (vertexFormat.st || vertexFormat.tangent || vertexFormat.bitangent) { // st required for tangent/bitangent calculation
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var st = new Float32Array(vertexCount * 2);
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var lengthSt = 1 / (length - 1);
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var heightSt = 1 / (boundingRectangle.height);
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var heightOffset = boundingRectangle.height / 2;
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var s, t;
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var stindex = 0;
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for (i = 0; i < length; i++) {
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s = i * lengthSt;
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t = heightSt * (shape[0].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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for (j = 1; j < shapeLength; j++) {
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t = heightSt * (shape[j].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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st[stindex++] = s;
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st[stindex++] = t;
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}
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t = heightSt * (shape[0].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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}
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for (j = 0; j < shapeLength; j++) {
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s = 0;
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t = heightSt * (shape[j].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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}
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for (j = 0; j < shapeLength; j++) {
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s = (length - 1) * lengthSt;
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t = heightSt * (shape[j].y + heightOffset);
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st[stindex++] = s;
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st[stindex++] = t;
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}
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attributes.st = new GeometryAttribute.GeometryAttribute({
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componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
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componentsPerAttribute : 2,
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values : new Float32Array(st)
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});
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}
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var endOffset = vertexCount - shapeLength * 2;
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for (i = 0; i < firstEndIndices.length; i += 3) {
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var v0 = firstEndIndices[i] + endOffset;
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var v1 = firstEndIndices[i + 1] + endOffset;
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var v2 = firstEndIndices[i + 2] + endOffset;
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indices[index++] = v0;
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indices[index++] = v1;
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indices[index++] = v2;
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indices[index++] = v2 + shapeLength;
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indices[index++] = v1 + shapeLength;
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indices[index++] = v0 + shapeLength;
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}
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var geometry = new GeometryAttribute.Geometry({
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attributes : attributes,
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indices : indices,
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boundingSphere : Transforms.BoundingSphere.fromVertices(combinedPositions),
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primitiveType : GeometryAttribute.PrimitiveType.TRIANGLES
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});
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if (vertexFormat.normal) {
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geometry = GeometryPipeline.GeometryPipeline.computeNormal(geometry);
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}
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if (vertexFormat.tangent || vertexFormat.bitangent) {
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try {
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geometry = GeometryPipeline.GeometryPipeline.computeTangentAndBitangent(geometry);
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} catch (e) {
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oneTimeWarning('polyline-volume-tangent-bitangent', 'Unable to compute tangents and bitangents for polyline volume geometry');
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//TODO https://github.com/CesiumGS/cesium/issues/3609
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}
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if (!vertexFormat.tangent) {
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geometry.attributes.tangent = undefined;
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}
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if (!vertexFormat.bitangent) {
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geometry.attributes.bitangent = undefined;
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}
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if (!vertexFormat.st) {
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geometry.attributes.st = undefined;
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}
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}
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return geometry;
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}
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/**
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* A description of a polyline with a volume (a 2D shape extruded along a polyline).
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*
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* @alias PolylineVolumeGeometry
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* @constructor
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*
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* @param {Object} options Object with the following properties:
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* @param {Cartesian3[]} options.polylinePositions An array of {@link Cartesain3} positions that define the center of the polyline volume.
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* @param {Cartesian2[]} options.shapePositions An array of {@link Cartesian2} positions that define the shape to be extruded along the polyline
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* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
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* @param {Number} [options.granularity=CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
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* @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
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* @param {CornerType} [options.cornerType=CornerType.ROUNDED] Determines the style of the corners.
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*
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* @see PolylineVolumeGeometry#createGeometry
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*
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* @demo {@link https://sandcastle.cesium.com/index.html?src=Polyline%20Volume.html|Cesium Sandcastle Polyline Volume Demo}
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*
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* @example
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* function computeCircle(radius) {
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* var positions = [];
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* for (var i = 0; i < 360; i++) {
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* var radians = Cesium.Math.toRadians(i);
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* positions.push(new Cesium.Cartesian2(radius * Math.cos(radians), radius * Math.sin(radians)));
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* }
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* return positions;
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* }
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*
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* var volume = new Cesium.PolylineVolumeGeometry({
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* vertexFormat : Cesium.VertexFormat.POSITION_ONLY,
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* polylinePositions : Cesium.Cartesian3.fromDegreesArray([
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* -72.0, 40.0,
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* -70.0, 35.0
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* ]),
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* shapePositions : computeCircle(100000.0)
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* });
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*/
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function PolylineVolumeGeometry(options) {
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options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
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var positions = options.polylinePositions;
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var shape = options.shapePositions;
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//>>includeStart('debug', pragmas.debug);
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if (!when.defined(positions)) {
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throw new Check.DeveloperError('options.polylinePositions is required.');
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}
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if (!when.defined(shape)) {
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throw new Check.DeveloperError('options.shapePositions is required.');
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}
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//>>includeEnd('debug');
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this._positions = positions;
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this._shape = shape;
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this._ellipsoid = Cartesian2.Ellipsoid.clone(when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84));
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this._cornerType = when.defaultValue(options.cornerType, PolylineVolumeGeometryLibrary.CornerType.ROUNDED);
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this._vertexFormat = VertexFormat.VertexFormat.clone(when.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT));
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this._granularity = when.defaultValue(options.granularity, _Math.CesiumMath.RADIANS_PER_DEGREE);
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this._workerName = 'createPolylineVolumeGeometry';
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var numComponents = 1 + positions.length * Cartesian2.Cartesian3.packedLength;
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numComponents += 1 + shape.length * Cartesian2.Cartesian2.packedLength;
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/**
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* The number of elements used to pack the object into an array.
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* @type {Number}
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*/
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this.packedLength = numComponents + Cartesian2.Ellipsoid.packedLength + VertexFormat.VertexFormat.packedLength + 2;
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}
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/**
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* Stores the provided instance into the provided array.
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*
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* @param {PolylineVolumeGeometry} value The value to pack.
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* @param {Number[]} array The array to pack into.
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* @param {Number} [startingIndex=0] The index into the array at which to start packing the elements.
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*
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* @returns {Number[]} The array that was packed into
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*/
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PolylineVolumeGeometry.pack = function(value, array, startingIndex) {
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//>>includeStart('debug', pragmas.debug);
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if (!when.defined(value)) {
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throw new Check.DeveloperError('value is required');
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}
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if (!when.defined(array)) {
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throw new Check.DeveloperError('array is required');
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}
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//>>includeEnd('debug');
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startingIndex = when.defaultValue(startingIndex, 0);
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var i;
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var positions = value._positions;
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var length = positions.length;
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array[startingIndex++] = length;
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for (i = 0; i < length; ++i, startingIndex += Cartesian2.Cartesian3.packedLength) {
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Cartesian2.Cartesian3.pack(positions[i], array, startingIndex);
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}
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var shape = value._shape;
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length = shape.length;
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array[startingIndex++] = length;
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for (i = 0; i < length; ++i, startingIndex += Cartesian2.Cartesian2.packedLength) {
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Cartesian2.Cartesian2.pack(shape[i], array, startingIndex);
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}
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Cartesian2.Ellipsoid.pack(value._ellipsoid, array, startingIndex);
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startingIndex += Cartesian2.Ellipsoid.packedLength;
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VertexFormat.VertexFormat.pack(value._vertexFormat, array, startingIndex);
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startingIndex += VertexFormat.VertexFormat.packedLength;
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array[startingIndex++] = value._cornerType;
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array[startingIndex] = value._granularity;
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return array;
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};
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var scratchEllipsoid = Cartesian2.Ellipsoid.clone(Cartesian2.Ellipsoid.UNIT_SPHERE);
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var scratchVertexFormat = new VertexFormat.VertexFormat();
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var scratchOptions = {
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polylinePositions : undefined,
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shapePositions : undefined,
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ellipsoid : scratchEllipsoid,
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vertexFormat : scratchVertexFormat,
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cornerType : undefined,
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granularity : undefined
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};
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|
||
|
|
/**
|
||
|
|
* Retrieves an instance from a packed array.
|
||
|
|
*
|
||
|
|
* @param {Number[]} array The packed array.
|
||
|
|
* @param {Number} [startingIndex=0] The starting index of the element to be unpacked.
|
||
|
|
* @param {PolylineVolumeGeometry} [result] The object into which to store the result.
|
||
|
|
* @returns {PolylineVolumeGeometry} The modified result parameter or a new PolylineVolumeGeometry instance if one was not provided.
|
||
|
|
*/
|
||
|
|
PolylineVolumeGeometry.unpack = function(array, startingIndex, result) {
|
||
|
|
//>>includeStart('debug', pragmas.debug);
|
||
|
|
if (!when.defined(array)) {
|
||
|
|
throw new Check.DeveloperError('array is required');
|
||
|
|
}
|
||
|
|
//>>includeEnd('debug');
|
||
|
|
|
||
|
|
startingIndex = when.defaultValue(startingIndex, 0);
|
||
|
|
|
||
|
|
var i;
|
||
|
|
|
||
|
|
var length = array[startingIndex++];
|
||
|
|
var positions = new Array(length);
|
||
|
|
|
||
|
|
for (i = 0; i < length; ++i, startingIndex += Cartesian2.Cartesian3.packedLength) {
|
||
|
|
positions[i] = Cartesian2.Cartesian3.unpack(array, startingIndex);
|
||
|
|
}
|
||
|
|
|
||
|
|
length = array[startingIndex++];
|
||
|
|
var shape = new Array(length);
|
||
|
|
|
||
|
|
for (i = 0; i < length; ++i, startingIndex += Cartesian2.Cartesian2.packedLength) {
|
||
|
|
shape[i] = Cartesian2.Cartesian2.unpack(array, startingIndex);
|
||
|
|
}
|
||
|
|
|
||
|
|
var ellipsoid = Cartesian2.Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
|
||
|
|
startingIndex += Cartesian2.Ellipsoid.packedLength;
|
||
|
|
|
||
|
|
var vertexFormat = VertexFormat.VertexFormat.unpack(array, startingIndex, scratchVertexFormat);
|
||
|
|
startingIndex += VertexFormat.VertexFormat.packedLength;
|
||
|
|
|
||
|
|
var cornerType = array[startingIndex++];
|
||
|
|
var granularity = array[startingIndex];
|
||
|
|
|
||
|
|
if (!when.defined(result)) {
|
||
|
|
scratchOptions.polylinePositions = positions;
|
||
|
|
scratchOptions.shapePositions = shape;
|
||
|
|
scratchOptions.cornerType = cornerType;
|
||
|
|
scratchOptions.granularity = granularity;
|
||
|
|
return new PolylineVolumeGeometry(scratchOptions);
|
||
|
|
}
|
||
|
|
|
||
|
|
result._positions = positions;
|
||
|
|
result._shape = shape;
|
||
|
|
result._ellipsoid = Cartesian2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
|
||
|
|
result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
|
||
|
|
result._cornerType = cornerType;
|
||
|
|
result._granularity = granularity;
|
||
|
|
|
||
|
|
return result;
|
||
|
|
};
|
||
|
|
|
||
|
|
var brScratch = new BoundingRectangle.BoundingRectangle();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Computes the geometric representation of a polyline with a volume, including its vertices, indices, and a bounding sphere.
|
||
|
|
*
|
||
|
|
* @param {PolylineVolumeGeometry} polylineVolumeGeometry A description of the polyline volume.
|
||
|
|
* @returns {Geometry|undefined} The computed vertices and indices.
|
||
|
|
*/
|
||
|
|
PolylineVolumeGeometry.createGeometry = function(polylineVolumeGeometry) {
|
||
|
|
var positions = polylineVolumeGeometry._positions;
|
||
|
|
var cleanPositions = arrayRemoveDuplicates.arrayRemoveDuplicates(positions, Cartesian2.Cartesian3.equalsEpsilon);
|
||
|
|
var shape2D = polylineVolumeGeometry._shape;
|
||
|
|
shape2D = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.removeDuplicatesFromShape(shape2D);
|
||
|
|
|
||
|
|
if (cleanPositions.length < 2 || shape2D.length < 3) {
|
||
|
|
return undefined;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (PolygonPipeline.PolygonPipeline.computeWindingOrder2D(shape2D) === PolygonPipeline.WindingOrder.CLOCKWISE) {
|
||
|
|
shape2D.reverse();
|
||
|
|
}
|
||
|
|
var boundingRectangle = BoundingRectangle.BoundingRectangle.fromPoints(shape2D, brScratch);
|
||
|
|
|
||
|
|
var computedPositions = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.computePositions(cleanPositions, shape2D, boundingRectangle, polylineVolumeGeometry, true);
|
||
|
|
return computeAttributes(computedPositions, shape2D, boundingRectangle, polylineVolumeGeometry._vertexFormat);
|
||
|
|
};
|
||
|
|
|
||
|
|
function createPolylineVolumeGeometry(polylineVolumeGeometry, offset) {
|
||
|
|
if (when.defined(offset)) {
|
||
|
|
polylineVolumeGeometry = PolylineVolumeGeometry.unpack(polylineVolumeGeometry, offset);
|
||
|
|
}
|
||
|
|
polylineVolumeGeometry._ellipsoid = Cartesian2.Ellipsoid.clone(polylineVolumeGeometry._ellipsoid);
|
||
|
|
return PolylineVolumeGeometry.createGeometry(polylineVolumeGeometry);
|
||
|
|
}
|
||
|
|
|
||
|
|
return createPolylineVolumeGeometry;
|
||
|
|
|
||
|
|
});
|
||
|
|
//# sourceMappingURL=createPolylineVolumeGeometry.js.map
|