452 lines
22 KiB
JavaScript
452 lines
22 KiB
JavaScript
/**
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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', './IndexDatatype-755cb3fd', './GeometryOffsetAttribute-bc682dfe', './EllipsoidRhumbLine-33694923', './PolygonPipeline-99528590', './RectangleGeometryLibrary-d09e6dbe'], function (when, Check, _Math, Cartesian2, Transforms, RuntimeError, WebGLConstants, ComponentDatatype, GeometryAttribute, GeometryAttributes, IndexDatatype, GeometryOffsetAttribute, EllipsoidRhumbLine, PolygonPipeline, RectangleGeometryLibrary) { 'use strict';
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var bottomBoundingSphere = new Transforms.BoundingSphere();
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var topBoundingSphere = new Transforms.BoundingSphere();
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var positionScratch = new Cartesian2.Cartesian3();
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var rectangleScratch = new Cartesian2.Rectangle();
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function constructRectangle(geometry, computedOptions) {
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var ellipsoid = geometry._ellipsoid;
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var height = computedOptions.height;
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var width = computedOptions.width;
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var northCap = computedOptions.northCap;
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var southCap = computedOptions.southCap;
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var rowHeight = height;
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var widthMultiplier = 2;
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var size = 0;
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var corners = 4;
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if (northCap) {
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widthMultiplier -= 1;
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rowHeight -= 1;
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size += 1;
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corners -= 2;
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}
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if (southCap) {
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widthMultiplier -= 1;
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rowHeight -= 1;
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size += 1;
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corners -= 2;
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}
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size += (widthMultiplier * width + 2 * rowHeight - corners);
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var positions = new Float64Array(size * 3);
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var posIndex = 0;
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var row = 0;
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var col;
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var position = positionScratch;
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if (northCap) {
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RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(computedOptions, ellipsoid, false, row, 0, position);
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positions[posIndex++] = position.x;
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positions[posIndex++] = position.y;
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positions[posIndex++] = position.z;
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} else {
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for (col = 0; col < width; col++) {
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RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(computedOptions, ellipsoid, false, row, col, position);
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positions[posIndex++] = position.x;
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positions[posIndex++] = position.y;
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positions[posIndex++] = position.z;
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}
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}
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col = width - 1;
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for (row = 1; row < height; row++) {
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RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(computedOptions, ellipsoid, false, row, col, position);
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positions[posIndex++] = position.x;
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positions[posIndex++] = position.y;
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positions[posIndex++] = position.z;
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}
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row = height - 1;
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if (!southCap) { // if southCap is true, we dont need to add any more points because the south pole point was added by the iteration above
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for (col = width - 2; col >= 0; col--) {
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RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(computedOptions, ellipsoid, false, row, col, position);
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positions[posIndex++] = position.x;
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positions[posIndex++] = position.y;
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positions[posIndex++] = position.z;
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}
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}
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col = 0;
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for (row = height - 2; row > 0; row--) {
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RectangleGeometryLibrary.RectangleGeometryLibrary.computePosition(computedOptions, ellipsoid, false, row, col, position);
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positions[posIndex++] = position.x;
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positions[posIndex++] = position.y;
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positions[posIndex++] = position.z;
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}
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var indicesSize = positions.length / 3 * 2;
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var indices = IndexDatatype.IndexDatatype.createTypedArray(positions.length / 3, indicesSize);
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var index = 0;
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for (var i = 0; i < (positions.length / 3) - 1; i++) {
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indices[index++] = i;
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indices[index++] = i + 1;
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}
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indices[index++] = (positions.length / 3) - 1;
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indices[index++] = 0;
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var geo = new GeometryAttribute.Geometry({
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attributes : new GeometryAttributes.GeometryAttributes(),
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primitiveType : GeometryAttribute.PrimitiveType.LINES
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});
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geo.attributes.position = new GeometryAttribute.GeometryAttribute({
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componentDatatype : ComponentDatatype.ComponentDatatype.DOUBLE,
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componentsPerAttribute : 3,
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values : positions
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});
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geo.indices = indices;
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return geo;
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}
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function constructExtrudedRectangle(rectangleGeometry, computedOptions) {
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var surfaceHeight = rectangleGeometry._surfaceHeight;
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var extrudedHeight = rectangleGeometry._extrudedHeight;
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var ellipsoid = rectangleGeometry._ellipsoid;
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var minHeight = extrudedHeight;
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var maxHeight = surfaceHeight;
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var geo = constructRectangle(rectangleGeometry, computedOptions);
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var height = computedOptions.height;
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var width = computedOptions.width;
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var topPositions = PolygonPipeline.PolygonPipeline.scaleToGeodeticHeight(geo.attributes.position.values, maxHeight, ellipsoid, false);
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var length = topPositions.length;
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var positions = new Float64Array(length * 2);
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positions.set(topPositions);
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var bottomPositions = PolygonPipeline.PolygonPipeline.scaleToGeodeticHeight(geo.attributes.position.values, minHeight, ellipsoid);
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positions.set(bottomPositions, length);
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geo.attributes.position.values = positions;
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var northCap = computedOptions.northCap;
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var southCap = computedOptions.southCap;
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var corners = 4;
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if (northCap) {
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corners -= 1;
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}
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if (southCap) {
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corners -= 1;
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}
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var indicesSize = (positions.length / 3 + corners) * 2;
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var indices = IndexDatatype.IndexDatatype.createTypedArray(positions.length / 3, indicesSize);
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length = positions.length / 6;
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var index = 0;
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for (var i = 0; i < length - 1; i++) {
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indices[index++] = i;
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indices[index++] = i + 1;
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indices[index++] = i + length;
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indices[index++] = i + length + 1;
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}
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indices[index++] = length - 1;
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indices[index++] = 0;
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indices[index++] = length + length - 1;
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indices[index++] = length;
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indices[index++] = 0;
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indices[index++] = length;
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var bottomCorner;
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if (northCap) {
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bottomCorner = height - 1;
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} else {
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var topRightCorner = width - 1;
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indices[index++] = topRightCorner;
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indices[index++] = topRightCorner + length;
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bottomCorner = width + height - 2;
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}
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indices[index++] = bottomCorner;
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indices[index++] = bottomCorner + length;
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if (!southCap) {
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var bottomLeftCorner = width + bottomCorner - 1;
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indices[index++] = bottomLeftCorner;
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indices[index] = bottomLeftCorner + length;
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}
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geo.indices = indices;
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return geo;
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}
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/**
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* A description of the outline of a a cartographic rectangle on an ellipsoid centered at the origin.
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*
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* @alias RectangleOutlineGeometry
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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 {Rectangle} options.rectangle A cartographic rectangle with north, south, east and west properties in radians.
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* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid on which the rectangle lies.
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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 {Number} [options.height=0.0] The distance in meters between the rectangle and the ellipsoid surface.
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* @param {Number} [options.rotation=0.0] The rotation of the rectangle, in radians. A positive rotation is counter-clockwise.
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* @param {Number} [options.extrudedHeight] The distance in meters between the rectangle's extruded face and the ellipsoid surface.
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*
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* @exception {DeveloperError} <code>options.rectangle.north</code> must be in the interval [<code>-Pi/2</code>, <code>Pi/2</code>].
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* @exception {DeveloperError} <code>options.rectangle.south</code> must be in the interval [<code>-Pi/2</code>, <code>Pi/2</code>].
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* @exception {DeveloperError} <code>options.rectangle.east</code> must be in the interval [<code>-Pi</code>, <code>Pi</code>].
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* @exception {DeveloperError} <code>options.rectangle.west</code> must be in the interval [<code>-Pi</code>, <code>Pi</code>].
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* @exception {DeveloperError} <code>options.rectangle.north</code> must be greater than <code>rectangle.south</code>.
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*
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* @see RectangleOutlineGeometry#createGeometry
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*
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* @example
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* var rectangle = new Cesium.RectangleOutlineGeometry({
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* ellipsoid : Cesium.Ellipsoid.WGS84,
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* rectangle : Cesium.Rectangle.fromDegrees(-80.0, 39.0, -74.0, 42.0),
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* height : 10000.0
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* });
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* var geometry = Cesium.RectangleOutlineGeometry.createGeometry(rectangle);
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*/
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function RectangleOutlineGeometry(options) {
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options = when.defaultValue(options, when.defaultValue.EMPTY_OBJECT);
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var rectangle = options.rectangle;
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var granularity = when.defaultValue(options.granularity, _Math.CesiumMath.RADIANS_PER_DEGREE);
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var ellipsoid = when.defaultValue(options.ellipsoid, Cartesian2.Ellipsoid.WGS84);
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var rotation = when.defaultValue(options.rotation, 0.0);
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//>>includeStart('debug', pragmas.debug);
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if (!when.defined(rectangle)) {
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throw new Check.DeveloperError('rectangle is required.');
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}
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Cartesian2.Rectangle.validate(rectangle);
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if (rectangle.north < rectangle.south) {
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throw new Check.DeveloperError('options.rectangle.north must be greater than options.rectangle.south');
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}
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//>>includeEnd('debug');
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var height = when.defaultValue(options.height, 0.0);
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var extrudedHeight = when.defaultValue(options.extrudedHeight, height);
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this._rectangle = Cartesian2.Rectangle.clone(rectangle);
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this._granularity = granularity;
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this._ellipsoid = ellipsoid;
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this._surfaceHeight = Math.max(height, extrudedHeight);
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this._rotation = rotation;
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this._extrudedHeight = Math.min(height, extrudedHeight);
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this._offsetAttribute = options.offsetAttribute;
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this._workerName = 'createRectangleOutlineGeometry';
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}
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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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RectangleOutlineGeometry.packedLength = Cartesian2.Rectangle.packedLength + Cartesian2.Ellipsoid.packedLength + 5;
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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 {RectangleOutlineGeometry} 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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RectangleOutlineGeometry.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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Cartesian2.Rectangle.pack(value._rectangle, array, startingIndex);
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startingIndex += Cartesian2.Rectangle.packedLength;
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Cartesian2.Ellipsoid.pack(value._ellipsoid, array, startingIndex);
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startingIndex += Cartesian2.Ellipsoid.packedLength;
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array[startingIndex++] = value._granularity;
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array[startingIndex++] = value._surfaceHeight;
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array[startingIndex++] = value._rotation;
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array[startingIndex++] = value._extrudedHeight;
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array[startingIndex] = when.defaultValue(value._offsetAttribute, -1);
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return array;
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};
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var scratchRectangle = new Cartesian2.Rectangle();
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var scratchEllipsoid = Cartesian2.Ellipsoid.clone(Cartesian2.Ellipsoid.UNIT_SPHERE);
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var scratchOptions = {
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rectangle : scratchRectangle,
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ellipsoid : scratchEllipsoid,
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granularity : undefined,
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height : undefined,
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rotation : undefined,
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extrudedHeight : undefined,
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offsetAttribute : 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 {RectangleOutlineGeometry} [result] The object into which to store the result.
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* @returns {RectangleOutlineGeometry} The modified result parameter or a new Quaternion instance if one was not provided.
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*/
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RectangleOutlineGeometry.unpack = function(array, startingIndex, result) {
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//>>includeStart('debug', pragmas.debug);
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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 rectangle = Cartesian2.Rectangle.unpack(array, startingIndex, scratchRectangle);
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startingIndex += Cartesian2.Rectangle.packedLength;
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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 granularity = array[startingIndex++];
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var height = array[startingIndex++];
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var rotation = array[startingIndex++];
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var extrudedHeight = array[startingIndex++];
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var offsetAttribute = array[startingIndex];
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if (!when.defined(result)) {
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scratchOptions.granularity = granularity;
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scratchOptions.height = height;
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scratchOptions.rotation = rotation;
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scratchOptions.extrudedHeight = extrudedHeight;
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scratchOptions.offsetAttribute = offsetAttribute === -1 ? undefined : offsetAttribute;
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return new RectangleOutlineGeometry(scratchOptions);
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}
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result._rectangle = Cartesian2.Rectangle.clone(rectangle, result._rectangle);
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result._ellipsoid = Cartesian2.Ellipsoid.clone(ellipsoid, result._ellipsoid);
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result._surfaceHeight = height;
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result._rotation = rotation;
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result._extrudedHeight = extrudedHeight;
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result._offsetAttribute = offsetAttribute === -1 ? undefined : offsetAttribute;
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return result;
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};
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var nwScratch = new Cartesian2.Cartographic();
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/**
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* Computes the geometric representation of an outline of a rectangle, including its vertices, indices, and a bounding sphere.
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*
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* @param {RectangleOutlineGeometry} rectangleGeometry A description of the rectangle outline.
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* @returns {Geometry|undefined} The computed vertices and indices.
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*
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* @exception {DeveloperError} Rotated rectangle is invalid.
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*/
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RectangleOutlineGeometry.createGeometry = function(rectangleGeometry) {
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var rectangle = rectangleGeometry._rectangle;
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var ellipsoid = rectangleGeometry._ellipsoid;
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var computedOptions = RectangleGeometryLibrary.RectangleGeometryLibrary.computeOptions(rectangle, rectangleGeometry._granularity, rectangleGeometry._rotation, 0, rectangleScratch, nwScratch);
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var geometry;
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var boundingSphere;
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if ((_Math.CesiumMath.equalsEpsilon(rectangle.north, rectangle.south, _Math.CesiumMath.EPSILON10) ||
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(_Math.CesiumMath.equalsEpsilon(rectangle.east, rectangle.west, _Math.CesiumMath.EPSILON10)))) {
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return undefined;
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}
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var surfaceHeight = rectangleGeometry._surfaceHeight;
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var extrudedHeight = rectangleGeometry._extrudedHeight;
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var extrude = !_Math.CesiumMath.equalsEpsilon(surfaceHeight, extrudedHeight, 0, _Math.CesiumMath.EPSILON2);
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var offsetValue;
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if (extrude) {
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geometry = constructExtrudedRectangle(rectangleGeometry, computedOptions);
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if (when.defined(rectangleGeometry._offsetAttribute)) {
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var size = geometry.attributes.position.values.length / 3;
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var offsetAttribute = new Uint8Array(size);
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if (rectangleGeometry._offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.TOP) {
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offsetAttribute = GeometryOffsetAttribute.arrayFill(offsetAttribute, 1, 0, size / 2);
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} else {
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offsetValue = rectangleGeometry._offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.NONE ? 0 : 1;
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offsetAttribute = GeometryOffsetAttribute.arrayFill(offsetAttribute, offsetValue);
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}
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geometry.attributes.applyOffset = new GeometryAttribute.GeometryAttribute({
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componentDatatype : ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE,
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componentsPerAttribute : 1,
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values : offsetAttribute
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});
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}
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var topBS = Transforms.BoundingSphere.fromRectangle3D(rectangle, ellipsoid, surfaceHeight, topBoundingSphere);
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var bottomBS = Transforms.BoundingSphere.fromRectangle3D(rectangle, ellipsoid, extrudedHeight, bottomBoundingSphere);
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boundingSphere = Transforms.BoundingSphere.union(topBS, bottomBS);
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} else {
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geometry = constructRectangle(rectangleGeometry, computedOptions);
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geometry.attributes.position.values = PolygonPipeline.PolygonPipeline.scaleToGeodeticHeight(geometry.attributes.position.values, surfaceHeight, ellipsoid, false);
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if (when.defined(rectangleGeometry._offsetAttribute)) {
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var length = geometry.attributes.position.values.length;
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var applyOffset = new Uint8Array(length / 3);
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offsetValue = rectangleGeometry._offsetAttribute === GeometryOffsetAttribute.GeometryOffsetAttribute.NONE ? 0 : 1;
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GeometryOffsetAttribute.arrayFill(applyOffset, offsetValue);
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geometry.attributes.applyOffset = new GeometryAttribute.GeometryAttribute({
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componentDatatype : ComponentDatatype.ComponentDatatype.UNSIGNED_BYTE,
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componentsPerAttribute : 1,
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values : applyOffset
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});
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}
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boundingSphere = Transforms.BoundingSphere.fromRectangle3D(rectangle, ellipsoid, surfaceHeight);
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}
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return new GeometryAttribute.Geometry({
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attributes : geometry.attributes,
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indices : geometry.indices,
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primitiveType : GeometryAttribute.PrimitiveType.LINES,
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boundingSphere : boundingSphere,
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offsetAttribute : rectangleGeometry._offsetAttribute
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});
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};
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function createRectangleOutlineGeometry(rectangleGeometry, offset) {
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if (when.defined(offset)) {
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rectangleGeometry = RectangleOutlineGeometry.unpack(rectangleGeometry, offset);
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}
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rectangleGeometry._ellipsoid = Cartesian2.Ellipsoid.clone(rectangleGeometry._ellipsoid);
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rectangleGeometry._rectangle = Cartesian2.Rectangle.clone(rectangleGeometry._rectangle);
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return RectangleOutlineGeometry.createGeometry(rectangleGeometry);
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}
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return createRectangleOutlineGeometry;
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});
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//# sourceMappingURL=createRectangleOutlineGeometry.js.map
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