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437 lines
16 KiB
437 lines
16 KiB
/**
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* @license
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* Cesium - https://github.com/CesiumGS/cesium
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* Version 1.99
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*
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* Copyright 2011-2022 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/main/LICENSE.md for full licensing details.
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*/
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define(['./defaultValue-135942ca', './Matrix3-ea964448', './arrayRemoveDuplicates-3fb00ed2', './BoundingRectangle-02351bff', './Transforms-ac2d28a9', './Matrix2-f9f1b94b', './ComponentDatatype-ebdce3ba', './PolylineVolumeGeometryLibrary-e460dd46', './Check-40d84a28', './GeometryAttribute-51d61732', './GeometryAttributes-899f8bd0', './GeometryPipeline-576f16cd', './IndexDatatype-fa75fe25', './Math-efde0c7b', './PolygonPipeline-cf232713', './VertexFormat-1d6950e1', './combine-462d91dd', './RuntimeError-f0dada00', './WebGLConstants-fcb70ee3', './EllipsoidTangentPlane-244dda7a', './AxisAlignedBoundingBox-48df2a2e', './IntersectionTests-4ab30dca', './Plane-93af52b2', './PolylinePipeline-b636012e', './EllipsoidGeodesic-08772132', './EllipsoidRhumbLine-6161ec8c', './AttributeCompression-53c7fda2', './EncodedCartesian3-4040c81e'], (function (defaultValue, Matrix3, arrayRemoveDuplicates, BoundingRectangle, Transforms, Matrix2, ComponentDatatype, PolylineVolumeGeometryLibrary, Check, GeometryAttribute, GeometryAttributes, GeometryPipeline, IndexDatatype, Math, PolygonPipeline, VertexFormat, combine, RuntimeError, WebGLConstants, EllipsoidTangentPlane, AxisAlignedBoundingBox, IntersectionTests, Plane, PolylinePipeline, EllipsoidGeodesic, EllipsoidRhumbLine, AttributeCompression, EncodedCartesian3) { 'use strict';
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function computeAttributes(
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combinedPositions,
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shape,
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boundingRectangle,
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vertexFormat
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) {
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const 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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const shapeLength = shape.length;
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const vertexCount = combinedPositions.length / 3;
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const length = (vertexCount - shapeLength * 2) / (shapeLength * 2);
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const firstEndIndices = PolygonPipeline.PolygonPipeline.triangulate(shape);
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const indicesCount =
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(length - 1) * shapeLength * 6 + firstEndIndices.length * 2;
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const indices = IndexDatatype.IndexDatatype.createTypedArray(vertexCount, indicesCount);
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let i, j;
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let ll, ul, ur, lr;
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const offset = shapeLength * 2;
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let 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) {
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// st required for tangent/bitangent calculation
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const st = new Float32Array(vertexCount * 2);
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const lengthSt = 1 / (length - 1);
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const heightSt = 1 / boundingRectangle.height;
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const heightOffset = boundingRectangle.height / 2;
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let s, t;
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let 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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const endOffset = vertexCount - shapeLength * 2;
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for (i = 0; i < firstEndIndices.length; i += 3) {
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const v0 = firstEndIndices[i] + endOffset;
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const v1 = firstEndIndices[i + 1] + endOffset;
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const 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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let 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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PolylineVolumeGeometryLibrary.oneTimeWarning(
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"polyline-volume-tangent-bitangent",
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"Unable to compute tangents and bitangents for polyline volume geometry"
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);
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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 Cartesian3} 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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* const positions = [];
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* for (let i = 0; i < 360; i++) {
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* const 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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* const 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 = defaultValue.defaultValue(options, defaultValue.defaultValue.EMPTY_OBJECT);
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const positions = options.polylinePositions;
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const shape = options.shapePositions;
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//>>includeStart('debug', pragmas.debug);
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if (!defaultValue.defined(positions)) {
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throw new Check.DeveloperError("options.polylinePositions is required.");
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}
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if (!defaultValue.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 = Matrix3.Ellipsoid.clone(
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defaultValue.defaultValue(options.ellipsoid, Matrix3.Ellipsoid.WGS84)
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);
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this._cornerType = defaultValue.defaultValue(options.cornerType, PolylineVolumeGeometryLibrary.CornerType.ROUNDED);
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this._vertexFormat = VertexFormat.VertexFormat.clone(
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defaultValue.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT)
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);
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this._granularity = defaultValue.defaultValue(
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options.granularity,
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Math.CesiumMath.RADIANS_PER_DEGREE
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);
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this._workerName = "createPolylineVolumeGeometry";
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let numComponents = 1 + positions.length * Matrix3.Cartesian3.packedLength;
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numComponents += 1 + shape.length * Matrix2.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 =
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numComponents + Matrix3.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 (!defaultValue.defined(value)) {
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throw new Check.DeveloperError("value is required");
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}
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if (!defaultValue.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 = defaultValue.defaultValue(startingIndex, 0);
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let i;
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const positions = value._positions;
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let length = positions.length;
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array[startingIndex++] = length;
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for (i = 0; i < length; ++i, startingIndex += Matrix3.Cartesian3.packedLength) {
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Matrix3.Cartesian3.pack(positions[i], array, startingIndex);
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}
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const 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 += Matrix2.Cartesian2.packedLength) {
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Matrix2.Cartesian2.pack(shape[i], array, startingIndex);
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}
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Matrix3.Ellipsoid.pack(value._ellipsoid, array, startingIndex);
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startingIndex += Matrix3.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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const scratchEllipsoid = Matrix3.Ellipsoid.clone(Matrix3.Ellipsoid.UNIT_SPHERE);
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const scratchVertexFormat = new VertexFormat.VertexFormat();
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const 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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/**
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* Retrieves an instance from a packed array.
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*
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* @param {Number[]} array The packed array.
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* @param {Number} [startingIndex=0] The starting index of the element to be unpacked.
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* @param {PolylineVolumeGeometry} [result] The object into which to store the result.
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* @returns {PolylineVolumeGeometry} The modified result parameter or a new PolylineVolumeGeometry instance if one was not provided.
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*/
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PolylineVolumeGeometry.unpack = function (array, startingIndex, result) {
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//>>includeStart('debug', pragmas.debug);
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if (!defaultValue.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 = defaultValue.defaultValue(startingIndex, 0);
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let i;
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let length = array[startingIndex++];
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const positions = new Array(length);
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for (i = 0; i < length; ++i, startingIndex += Matrix3.Cartesian3.packedLength) {
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positions[i] = Matrix3.Cartesian3.unpack(array, startingIndex);
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}
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length = array[startingIndex++];
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const shape = new Array(length);
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for (i = 0; i < length; ++i, startingIndex += Matrix2.Cartesian2.packedLength) {
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shape[i] = Matrix2.Cartesian2.unpack(array, startingIndex);
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}
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const ellipsoid = Matrix3.Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
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startingIndex += Matrix3.Ellipsoid.packedLength;
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const vertexFormat = VertexFormat.VertexFormat.unpack(
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array,
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startingIndex,
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scratchVertexFormat
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);
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startingIndex += VertexFormat.VertexFormat.packedLength;
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const cornerType = array[startingIndex++];
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const granularity = array[startingIndex];
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if (!defaultValue.defined(result)) {
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scratchOptions.polylinePositions = positions;
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scratchOptions.shapePositions = shape;
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scratchOptions.cornerType = cornerType;
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scratchOptions.granularity = granularity;
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return new PolylineVolumeGeometry(scratchOptions);
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}
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result._positions = positions;
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result._shape = shape;
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result._ellipsoid = Matrix3.Ellipsoid.clone(ellipsoid, result._ellipsoid);
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result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
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result._cornerType = cornerType;
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result._granularity = granularity;
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return result;
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};
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const brScratch = new BoundingRectangle.BoundingRectangle();
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/**
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* Computes the geometric representation of a polyline with a volume, including its vertices, indices, and a bounding sphere.
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*
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* @param {PolylineVolumeGeometry} polylineVolumeGeometry A description of the polyline volume.
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* @returns {Geometry|undefined} The computed vertices and indices.
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*/
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PolylineVolumeGeometry.createGeometry = function (polylineVolumeGeometry) {
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const positions = polylineVolumeGeometry._positions;
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const cleanPositions = arrayRemoveDuplicates.arrayRemoveDuplicates(
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positions,
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Matrix3.Cartesian3.equalsEpsilon
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);
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let shape2D = polylineVolumeGeometry._shape;
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shape2D = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.removeDuplicatesFromShape(shape2D);
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if (cleanPositions.length < 2 || shape2D.length < 3) {
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return undefined;
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}
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if (
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PolygonPipeline.PolygonPipeline.computeWindingOrder2D(shape2D) === PolygonPipeline.WindingOrder.CLOCKWISE
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) {
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shape2D.reverse();
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}
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const boundingRectangle = BoundingRectangle.BoundingRectangle.fromPoints(shape2D, brScratch);
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const computedPositions = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.computePositions(
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cleanPositions,
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shape2D,
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boundingRectangle,
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polylineVolumeGeometry,
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true
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);
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return computeAttributes(
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computedPositions,
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shape2D,
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boundingRectangle,
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polylineVolumeGeometry._vertexFormat
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);
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};
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function createPolylineVolumeGeometry(polylineVolumeGeometry, offset) {
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if (defaultValue.defined(offset)) {
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polylineVolumeGeometry = PolylineVolumeGeometry.unpack(
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polylineVolumeGeometry,
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offset
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);
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}
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polylineVolumeGeometry._ellipsoid = Matrix3.Ellipsoid.clone(
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polylineVolumeGeometry._ellipsoid
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);
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return PolylineVolumeGeometry.createGeometry(polylineVolumeGeometry);
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}
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return createPolylineVolumeGeometry;
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}));
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