438 lines
21 KiB
JavaScript
438 lines
21 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', './GeometryInstance-81f6321c', './arrayRemoveDuplicates-8d93d3b4', './BoundingRectangle-a263ff52', './EllipsoidTangentPlane-cf837d4c', './OrientedBoundingBox-85824f79', './CoplanarPolygonGeometryLibrary-939b0045', './ArcType-29cf2197', './EllipsoidRhumbLine-33694923', './PolygonPipeline-99528590', './PolygonGeometryLibrary-4cb0025f'], function (when, Check, _Math, Cartesian2, Transforms, RuntimeError, WebGLConstants, ComponentDatatype, GeometryAttribute, GeometryAttributes, AttributeCompression, GeometryPipeline, EncodedCartesian3, IndexDatatype, IntersectionTests, Plane, VertexFormat, GeometryInstance, arrayRemoveDuplicates, BoundingRectangle, EllipsoidTangentPlane, OrientedBoundingBox, CoplanarPolygonGeometryLibrary, ArcType, EllipsoidRhumbLine, PolygonPipeline, PolygonGeometryLibrary) { 'use strict';
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var scratchPosition = new Cartesian2.Cartesian3();
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var scratchBR = new BoundingRectangle.BoundingRectangle();
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var stScratch = new Cartesian2.Cartesian2();
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var textureCoordinatesOrigin = new Cartesian2.Cartesian2();
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var scratchNormal = new Cartesian2.Cartesian3();
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var scratchTangent = new Cartesian2.Cartesian3();
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var scratchBitangent = new Cartesian2.Cartesian3();
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var centerScratch = new Cartesian2.Cartesian3();
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var axis1Scratch = new Cartesian2.Cartesian3();
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var axis2Scratch = new Cartesian2.Cartesian3();
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var quaternionScratch = new Transforms.Quaternion();
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var textureMatrixScratch = new Transforms.Matrix3();
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var tangentRotationScratch = new Transforms.Matrix3();
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var surfaceNormalScratch = new Cartesian2.Cartesian3();
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function createGeometryFromPolygon(polygon, vertexFormat, boundingRectangle, stRotation, projectPointTo2D, normal, tangent, bitangent) {
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var positions = polygon.positions;
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var indices = PolygonPipeline.PolygonPipeline.triangulate(polygon.positions2D, polygon.holes);
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/* If polygon is completely unrenderable, just use the first three vertices */
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if (indices.length < 3) {
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indices = [0, 1, 2];
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}
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var newIndices = IndexDatatype.IndexDatatype.createTypedArray(positions.length, indices.length);
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newIndices.set(indices);
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var textureMatrix = textureMatrixScratch;
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if (stRotation !== 0.0) {
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var rotation = Transforms.Quaternion.fromAxisAngle(normal, stRotation, quaternionScratch);
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textureMatrix = Transforms.Matrix3.fromQuaternion(rotation, textureMatrix);
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if (vertexFormat.tangent || vertexFormat.bitangent) {
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rotation = Transforms.Quaternion.fromAxisAngle(normal, -stRotation, quaternionScratch);
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var tangentRotation = Transforms.Matrix3.fromQuaternion(rotation, tangentRotationScratch);
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tangent = Cartesian2.Cartesian3.normalize(Transforms.Matrix3.multiplyByVector(tangentRotation, tangent, tangent), tangent);
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if (vertexFormat.bitangent) {
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bitangent = Cartesian2.Cartesian3.normalize(Cartesian2.Cartesian3.cross(normal, tangent, bitangent), bitangent);
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}
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}
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} else {
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textureMatrix = Transforms.Matrix3.clone(Transforms.Matrix3.IDENTITY, textureMatrix);
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}
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var stOrigin = textureCoordinatesOrigin;
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if (vertexFormat.st) {
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stOrigin.x = boundingRectangle.x;
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stOrigin.y = boundingRectangle.y;
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}
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var length = positions.length;
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var size = length * 3;
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var flatPositions = new Float64Array(size);
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var normals = vertexFormat.normal ? new Float32Array(size) : undefined;
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var tangents = vertexFormat.tangent ? new Float32Array(size) : undefined;
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var bitangents = vertexFormat.bitangent ? new Float32Array(size) : undefined;
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var textureCoordinates = vertexFormat.st ? new Float32Array(length * 2) : undefined;
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var positionIndex = 0;
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var normalIndex = 0;
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var bitangentIndex = 0;
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var tangentIndex = 0;
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var stIndex = 0;
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for (var i = 0; i < length; i++) {
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var position = positions[i];
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flatPositions[positionIndex++] = position.x;
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flatPositions[positionIndex++] = position.y;
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flatPositions[positionIndex++] = position.z;
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if (vertexFormat.st) {
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var p = Transforms.Matrix3.multiplyByVector(textureMatrix, position, scratchPosition);
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var st = projectPointTo2D(p, stScratch);
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Cartesian2.Cartesian2.subtract(st, stOrigin, st);
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var stx = _Math.CesiumMath.clamp(st.x / boundingRectangle.width, 0, 1);
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var sty = _Math.CesiumMath.clamp(st.y / boundingRectangle.height, 0, 1);
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textureCoordinates[stIndex++] = stx;
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textureCoordinates[stIndex++] = sty;
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}
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if (vertexFormat.normal) {
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normals[normalIndex++] = normal.x;
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normals[normalIndex++] = normal.y;
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normals[normalIndex++] = normal.z;
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}
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if (vertexFormat.tangent) {
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tangents[tangentIndex++] = tangent.x;
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tangents[tangentIndex++] = tangent.y;
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tangents[tangentIndex++] = tangent.z;
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}
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if (vertexFormat.bitangent) {
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bitangents[bitangentIndex++] = bitangent.x;
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bitangents[bitangentIndex++] = bitangent.y;
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bitangents[bitangentIndex++] = bitangent.z;
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}
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}
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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 : flatPositions
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});
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}
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if (vertexFormat.normal) {
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attributes.normal = new GeometryAttribute.GeometryAttribute({
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componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
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componentsPerAttribute : 3,
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values : normals
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});
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}
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if (vertexFormat.tangent) {
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attributes.tangent = new GeometryAttribute.GeometryAttribute({
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componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
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componentsPerAttribute : 3,
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values : tangents
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});
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}
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if (vertexFormat.bitangent) {
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attributes.bitangent = new GeometryAttribute.GeometryAttribute({
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componentDatatype : ComponentDatatype.ComponentDatatype.FLOAT,
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componentsPerAttribute : 3,
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values : bitangents
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});
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}
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if (vertexFormat.st) {
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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 : textureCoordinates
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});
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}
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return new GeometryAttribute.Geometry({
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attributes : attributes,
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indices : newIndices,
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primitiveType : GeometryAttribute.PrimitiveType.TRIANGLES
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});
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}
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/**
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* A description of a polygon composed of arbitrary coplanar positions.
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*
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* @alias CoplanarPolygonGeometry
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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 {PolygonHierarchy} options.polygonHierarchy A polygon hierarchy that can include holes.
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* @param {Number} [options.stRotation=0.0] The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
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* @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
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* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
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*
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* @example
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* var polygon = new Cesium.CoplanarPolygonGeometry({
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* positions : Cesium.Cartesian3.fromDegreesArrayHeights([
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* -90.0, 30.0, 0.0,
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* -90.0, 30.0, 1000.0,
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* -80.0, 30.0, 1000.0,
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* -80.0, 30.0, 0.0
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* ])
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* });
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* var geometry = Cesium.CoplanarPolygonGeometry.createGeometry(polygon);
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*
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* @see CoplanarPolygonGeometry.createGeometry
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*/
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function CoplanarPolygonGeometry(options) {
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options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
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var polygonHierarchy = options.polygonHierarchy;
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//>>includeStart('debug', pragmas.debug);
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Check.Check.defined('options.polygonHierarchy', polygonHierarchy);
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//>>includeEnd('debug');
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var vertexFormat = when.defaultValue(options.vertexFormat, VertexFormat.VertexFormat.DEFAULT);
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this._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat);
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this._polygonHierarchy = polygonHierarchy;
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this._stRotation = when.defaultValue(options.stRotation, 0.0);
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this._ellipsoid = Cartesian2.Ellipsoid.clone(when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84));
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this._workerName = 'createCoplanarPolygonGeometry';
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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 = PolygonGeometryLibrary.PolygonGeometryLibrary.computeHierarchyPackedLength(polygonHierarchy) + VertexFormat.VertexFormat.packedLength + Cartesian2.Ellipsoid.packedLength + 2;
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}
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/**
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* A description of a coplanar polygon from an array of positions.
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*
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* @param {Object} options Object with the following properties:
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* @param {Cartesian3[]} options.positions An array of positions that defined the corner points of the polygon.
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* @param {VertexFormat} [options.vertexFormat=VertexFormat.DEFAULT] The vertex attributes to be computed.
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* @param {Number} [options.stRotation=0.0] The rotation of the texture coordinates, in radians. A positive rotation is counter-clockwise.
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* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
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* @returns {CoplanarPolygonGeometry}
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*
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* @example
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* // create a polygon from points
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* var polygon = Cesium.CoplanarPolygonGeometry.fromPositions({
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* positions : Cesium.Cartesian3.fromDegreesArray([
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* -72.0, 40.0,
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* -70.0, 35.0,
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* -75.0, 30.0,
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* -70.0, 30.0,
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* -68.0, 40.0
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* ])
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* });
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* var geometry = Cesium.PolygonGeometry.createGeometry(polygon);
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*
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* @see PolygonGeometry#createGeometry
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*/
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CoplanarPolygonGeometry.fromPositions = function(options) {
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options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
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//>>includeStart('debug', pragmas.debug);
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Check.Check.defined('options.positions', options.positions);
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//>>includeEnd('debug');
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var newOptions = {
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polygonHierarchy : {
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positions : options.positions
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},
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vertexFormat : options.vertexFormat,
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stRotation : options.stRotation,
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ellipsoid : options.ellipsoid
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};
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return new CoplanarPolygonGeometry(newOptions);
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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 {CoplanarPolygonGeometry} 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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CoplanarPolygonGeometry.pack = function(value, array, startingIndex) {
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//>>includeStart('debug', pragmas.debug);
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Check.Check.typeOf.object('value', value);
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Check.Check.defined('array', array);
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//>>includeEnd('debug');
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startingIndex = when.defaultValue(startingIndex, 0);
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startingIndex = PolygonGeometryLibrary.PolygonGeometryLibrary.packPolygonHierarchy(value._polygonHierarchy, array, startingIndex);
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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._stRotation;
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array[startingIndex] = value.packedLength;
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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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polygonHierarchy : {}
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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 {CoplanarPolygonGeometry} [result] The object into which to store the result.
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* @returns {CoplanarPolygonGeometry} The modified result parameter or a new CoplanarPolygonGeometry instance if one was not provided.
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*/
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CoplanarPolygonGeometry.unpack = function(array, startingIndex, result) {
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//>>includeStart('debug', pragmas.debug);
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Check.Check.defined('array', array);
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//>>includeEnd('debug');
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startingIndex = when.defaultValue(startingIndex, 0);
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var polygonHierarchy = PolygonGeometryLibrary.PolygonGeometryLibrary.unpackPolygonHierarchy(array, startingIndex);
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startingIndex = polygonHierarchy.startingIndex;
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delete polygonHierarchy.startingIndex;
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var ellipsoid = Cartesian2.Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
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startingIndex += Cartesian2.Ellipsoid.packedLength;
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var vertexFormat = VertexFormat.VertexFormat.unpack(array, startingIndex, scratchVertexFormat);
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startingIndex += VertexFormat.VertexFormat.packedLength;
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var stRotation = array[startingIndex++];
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var packedLength = array[startingIndex];
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|
|
|
||
|
|
if (!when.defined(result)) {
|
||
|
|
result = new CoplanarPolygonGeometry(scratchOptions);
|
||
|
|
}
|
||
|
|
|
||
|
|
result._polygonHierarchy = polygonHierarchy;
|
||
|
|
result._ellipsoid = Cartesian2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
|
||
|
|
result._vertexFormat = VertexFormat.VertexFormat.clone(vertexFormat, result._vertexFormat);
|
||
|
|
result._stRotation = stRotation;
|
||
|
|
result.packedLength = packedLength;
|
||
|
|
return result;
|
||
|
|
};
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Computes the geometric representation of an arbitrary coplanar polygon, including its vertices, indices, and a bounding sphere.
|
||
|
|
*
|
||
|
|
* @param {CoplanarPolygonGeometry} polygonGeometry A description of the polygon.
|
||
|
|
* @returns {Geometry|undefined} The computed vertices and indices.
|
||
|
|
*/
|
||
|
|
CoplanarPolygonGeometry.createGeometry = function(polygonGeometry) {
|
||
|
|
var vertexFormat = polygonGeometry._vertexFormat;
|
||
|
|
var polygonHierarchy = polygonGeometry._polygonHierarchy;
|
||
|
|
var stRotation = polygonGeometry._stRotation;
|
||
|
|
|
||
|
|
var outerPositions = polygonHierarchy.positions;
|
||
|
|
outerPositions = arrayRemoveDuplicates.arrayRemoveDuplicates(outerPositions, Cartesian2.Cartesian3.equalsEpsilon, true);
|
||
|
|
if (outerPositions.length < 3) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
var normal = scratchNormal;
|
||
|
|
var tangent = scratchTangent;
|
||
|
|
var bitangent = scratchBitangent;
|
||
|
|
var axis1 = axis1Scratch;
|
||
|
|
var axis2 = axis2Scratch;
|
||
|
|
|
||
|
|
var validGeometry = CoplanarPolygonGeometryLibrary.CoplanarPolygonGeometryLibrary.computeProjectTo2DArguments(outerPositions, centerScratch, axis1, axis2);
|
||
|
|
if (!validGeometry) {
|
||
|
|
return undefined;
|
||
|
|
}
|
||
|
|
|
||
|
|
normal = Cartesian2.Cartesian3.cross(axis1, axis2, normal);
|
||
|
|
normal = Cartesian2.Cartesian3.normalize(normal, normal);
|
||
|
|
|
||
|
|
if (!Cartesian2.Cartesian3.equalsEpsilon(centerScratch, Cartesian2.Cartesian3.ZERO, _Math.CesiumMath.EPSILON6)) {
|
||
|
|
var surfaceNormal = polygonGeometry._ellipsoid.geodeticSurfaceNormal(centerScratch, surfaceNormalScratch);
|
||
|
|
if (Cartesian2.Cartesian3.dot(normal, surfaceNormal) < 0) {
|
||
|
|
normal = Cartesian2.Cartesian3.negate(normal, normal);
|
||
|
|
axis1 = Cartesian2.Cartesian3.negate(axis1, axis1);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
var projectPoints = CoplanarPolygonGeometryLibrary.CoplanarPolygonGeometryLibrary.createProjectPointsTo2DFunction(centerScratch, axis1, axis2);
|
||
|
|
var projectPoint = CoplanarPolygonGeometryLibrary.CoplanarPolygonGeometryLibrary.createProjectPointTo2DFunction(centerScratch, axis1, axis2);
|
||
|
|
|
||
|
|
if (vertexFormat.tangent) {
|
||
|
|
tangent = Cartesian2.Cartesian3.clone(axis1, tangent);
|
||
|
|
}
|
||
|
|
if (vertexFormat.bitangent) {
|
||
|
|
bitangent = Cartesian2.Cartesian3.clone(axis2, bitangent);
|
||
|
|
}
|
||
|
|
|
||
|
|
var results = PolygonGeometryLibrary.PolygonGeometryLibrary.polygonsFromHierarchy(polygonHierarchy, projectPoints, false);
|
||
|
|
var hierarchy = results.hierarchy;
|
||
|
|
var polygons = results.polygons;
|
||
|
|
|
||
|
|
if (hierarchy.length === 0) {
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
outerPositions = hierarchy[0].outerRing;
|
||
|
|
|
||
|
|
var boundingSphere = Transforms.BoundingSphere.fromPoints(outerPositions);
|
||
|
|
var boundingRectangle = PolygonGeometryLibrary.PolygonGeometryLibrary.computeBoundingRectangle(normal, projectPoint, outerPositions, stRotation, scratchBR);
|
||
|
|
|
||
|
|
var geometries = [];
|
||
|
|
for (var i = 0; i < polygons.length; i++) {
|
||
|
|
var geometryInstance = new GeometryInstance.GeometryInstance({
|
||
|
|
geometry : createGeometryFromPolygon(polygons[i], vertexFormat, boundingRectangle, stRotation, projectPoint, normal, tangent, bitangent)
|
||
|
|
});
|
||
|
|
|
||
|
|
geometries.push(geometryInstance);
|
||
|
|
}
|
||
|
|
|
||
|
|
var geometry = GeometryPipeline.GeometryPipeline.combineInstances(geometries)[0];
|
||
|
|
geometry.attributes.position.values = new Float64Array(geometry.attributes.position.values);
|
||
|
|
geometry.indices = IndexDatatype.IndexDatatype.createTypedArray(geometry.attributes.position.values.length / 3, geometry.indices);
|
||
|
|
|
||
|
|
var attributes = geometry.attributes;
|
||
|
|
if (!vertexFormat.position) {
|
||
|
|
delete attributes.position;
|
||
|
|
}
|
||
|
|
return new GeometryAttribute.Geometry({
|
||
|
|
attributes : attributes,
|
||
|
|
indices : geometry.indices,
|
||
|
|
primitiveType : geometry.primitiveType,
|
||
|
|
boundingSphere : boundingSphere
|
||
|
|
});
|
||
|
|
};
|
||
|
|
|
||
|
|
function createCoplanarPolygonGeometry(polygonGeometry, offset) {
|
||
|
|
if (when.defined(offset)) {
|
||
|
|
polygonGeometry = CoplanarPolygonGeometry.unpack(polygonGeometry, offset);
|
||
|
|
}
|
||
|
|
return CoplanarPolygonGeometry.createGeometry(polygonGeometry);
|
||
|
|
}
|
||
|
|
|
||
|
|
return createCoplanarPolygonGeometry;
|
||
|
|
|
||
|
|
});
|
||
|
|
//# sourceMappingURL=createCoplanarPolygonGeometry.js.map
|