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522 lines
17 KiB
JavaScript
522 lines
17 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(['exports', './Cartesian2-716c2715', './PolylineVolumeGeometryLibrary-ae862093', './when-208fe5b0', './Math-3ba16bed', './Transforms-f1816abc', './PolylinePipeline-13b674b4'], function (exports, Cartesian2, PolylineVolumeGeometryLibrary, when, _Math, Transforms, PolylinePipeline) { 'use strict';
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/**
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* @private
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*/
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var CorridorGeometryLibrary = {};
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var scratch1 = new Cartesian2.Cartesian3();
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var scratch2 = new Cartesian2.Cartesian3();
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var scratch3 = new Cartesian2.Cartesian3();
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var scratch4 = new Cartesian2.Cartesian3();
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var scaleArray2 = [new Cartesian2.Cartesian3(), new Cartesian2.Cartesian3()];
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var cartesian1 = new Cartesian2.Cartesian3();
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var cartesian2 = new Cartesian2.Cartesian3();
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var cartesian3 = new Cartesian2.Cartesian3();
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var cartesian4 = new Cartesian2.Cartesian3();
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var cartesian5 = new Cartesian2.Cartesian3();
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var cartesian6 = new Cartesian2.Cartesian3();
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var cartesian7 = new Cartesian2.Cartesian3();
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var cartesian8 = new Cartesian2.Cartesian3();
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var cartesian9 = new Cartesian2.Cartesian3();
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var cartesian10 = new Cartesian2.Cartesian3();
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var quaterion = new Transforms.Quaternion();
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var rotMatrix = new Transforms.Matrix3();
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function computeRoundCorner(
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cornerPoint,
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startPoint,
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endPoint,
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cornerType,
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leftIsOutside
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) {
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var angle = Cartesian2.Cartesian3.angleBetween(
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Cartesian2.Cartesian3.subtract(startPoint, cornerPoint, scratch1),
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Cartesian2.Cartesian3.subtract(endPoint, cornerPoint, scratch2)
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);
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var granularity =
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cornerType === PolylineVolumeGeometryLibrary.CornerType.BEVELED
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? 1
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: Math.ceil(angle / _Math.CesiumMath.toRadians(5)) + 1;
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var size = granularity * 3;
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var array = new Array(size);
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array[size - 3] = endPoint.x;
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array[size - 2] = endPoint.y;
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array[size - 1] = endPoint.z;
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var m;
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if (leftIsOutside) {
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m = Transforms.Matrix3.fromQuaternion(
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Transforms.Quaternion.fromAxisAngle(
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Cartesian2.Cartesian3.negate(cornerPoint, scratch1),
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angle / granularity,
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quaterion
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),
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rotMatrix
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);
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} else {
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m = Transforms.Matrix3.fromQuaternion(
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Transforms.Quaternion.fromAxisAngle(cornerPoint, angle / granularity, quaterion),
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rotMatrix
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);
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}
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var index = 0;
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startPoint = Cartesian2.Cartesian3.clone(startPoint, scratch1);
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for (var i = 0; i < granularity; i++) {
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startPoint = Transforms.Matrix3.multiplyByVector(m, startPoint, startPoint);
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array[index++] = startPoint.x;
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array[index++] = startPoint.y;
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array[index++] = startPoint.z;
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}
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return array;
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}
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function addEndCaps(calculatedPositions) {
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var cornerPoint = cartesian1;
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var startPoint = cartesian2;
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var endPoint = cartesian3;
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var leftEdge = calculatedPositions[1];
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startPoint = Cartesian2.Cartesian3.fromArray(
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calculatedPositions[1],
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leftEdge.length - 3,
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startPoint
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);
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endPoint = Cartesian2.Cartesian3.fromArray(calculatedPositions[0], 0, endPoint);
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cornerPoint = Cartesian2.Cartesian3.midpoint(startPoint, endPoint, cornerPoint);
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var firstEndCap = computeRoundCorner(
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cornerPoint,
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startPoint,
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endPoint,
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PolylineVolumeGeometryLibrary.CornerType.ROUNDED,
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false
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);
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var length = calculatedPositions.length - 1;
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var rightEdge = calculatedPositions[length - 1];
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leftEdge = calculatedPositions[length];
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startPoint = Cartesian2.Cartesian3.fromArray(
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rightEdge,
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rightEdge.length - 3,
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startPoint
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);
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endPoint = Cartesian2.Cartesian3.fromArray(leftEdge, 0, endPoint);
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cornerPoint = Cartesian2.Cartesian3.midpoint(startPoint, endPoint, cornerPoint);
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var lastEndCap = computeRoundCorner(
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cornerPoint,
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startPoint,
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endPoint,
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PolylineVolumeGeometryLibrary.CornerType.ROUNDED,
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false
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);
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return [firstEndCap, lastEndCap];
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}
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function computeMiteredCorner(
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position,
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leftCornerDirection,
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lastPoint,
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leftIsOutside
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) {
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var cornerPoint = scratch1;
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if (leftIsOutside) {
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cornerPoint = Cartesian2.Cartesian3.add(position, leftCornerDirection, cornerPoint);
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} else {
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leftCornerDirection = Cartesian2.Cartesian3.negate(
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leftCornerDirection,
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leftCornerDirection
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);
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cornerPoint = Cartesian2.Cartesian3.add(position, leftCornerDirection, cornerPoint);
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}
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return [
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cornerPoint.x,
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cornerPoint.y,
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cornerPoint.z,
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lastPoint.x,
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lastPoint.y,
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lastPoint.z,
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];
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}
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function addShiftedPositions(positions, left, scalar, calculatedPositions) {
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var rightPositions = new Array(positions.length);
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var leftPositions = new Array(positions.length);
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var scaledLeft = Cartesian2.Cartesian3.multiplyByScalar(left, scalar, scratch1);
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var scaledRight = Cartesian2.Cartesian3.negate(scaledLeft, scratch2);
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var rightIndex = 0;
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var leftIndex = positions.length - 1;
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for (var i = 0; i < positions.length; i += 3) {
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var pos = Cartesian2.Cartesian3.fromArray(positions, i, scratch3);
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var rightPos = Cartesian2.Cartesian3.add(pos, scaledRight, scratch4);
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rightPositions[rightIndex++] = rightPos.x;
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rightPositions[rightIndex++] = rightPos.y;
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rightPositions[rightIndex++] = rightPos.z;
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var leftPos = Cartesian2.Cartesian3.add(pos, scaledLeft, scratch4);
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leftPositions[leftIndex--] = leftPos.z;
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leftPositions[leftIndex--] = leftPos.y;
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leftPositions[leftIndex--] = leftPos.x;
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}
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calculatedPositions.push(rightPositions, leftPositions);
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return calculatedPositions;
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}
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/**
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* @private
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*/
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CorridorGeometryLibrary.addAttribute = function (
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attribute,
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value,
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front,
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back
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) {
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var x = value.x;
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var y = value.y;
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var z = value.z;
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if (when.defined(front)) {
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attribute[front] = x;
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attribute[front + 1] = y;
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attribute[front + 2] = z;
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}
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if (when.defined(back)) {
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attribute[back] = z;
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attribute[back - 1] = y;
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attribute[back - 2] = x;
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}
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};
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var scratchForwardProjection = new Cartesian2.Cartesian3();
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var scratchBackwardProjection = new Cartesian2.Cartesian3();
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/**
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* @private
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*/
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CorridorGeometryLibrary.computePositions = function (params) {
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var granularity = params.granularity;
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var positions = params.positions;
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var ellipsoid = params.ellipsoid;
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var width = params.width / 2;
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var cornerType = params.cornerType;
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var saveAttributes = params.saveAttributes;
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var normal = cartesian1;
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var forward = cartesian2;
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var backward = cartesian3;
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var left = cartesian4;
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var cornerDirection = cartesian5;
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var startPoint = cartesian6;
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var previousPos = cartesian7;
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var rightPos = cartesian8;
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var leftPos = cartesian9;
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var center = cartesian10;
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var calculatedPositions = [];
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var calculatedLefts = saveAttributes ? [] : undefined;
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var calculatedNormals = saveAttributes ? [] : undefined;
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var position = positions[0]; //add first point
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var nextPosition = positions[1];
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forward = Cartesian2.Cartesian3.normalize(
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Cartesian2.Cartesian3.subtract(nextPosition, position, forward),
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forward
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);
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normal = ellipsoid.geodeticSurfaceNormal(position, normal);
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left = Cartesian2.Cartesian3.normalize(Cartesian2.Cartesian3.cross(normal, forward, left), left);
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if (saveAttributes) {
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calculatedLefts.push(left.x, left.y, left.z);
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calculatedNormals.push(normal.x, normal.y, normal.z);
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}
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previousPos = Cartesian2.Cartesian3.clone(position, previousPos);
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position = nextPosition;
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backward = Cartesian2.Cartesian3.negate(forward, backward);
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var subdividedPositions;
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var corners = [];
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var i;
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var length = positions.length;
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for (i = 1; i < length - 1; i++) {
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// add middle points and corners
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normal = ellipsoid.geodeticSurfaceNormal(position, normal);
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nextPosition = positions[i + 1];
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forward = Cartesian2.Cartesian3.normalize(
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Cartesian2.Cartesian3.subtract(nextPosition, position, forward),
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forward
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);
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cornerDirection = Cartesian2.Cartesian3.normalize(
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Cartesian2.Cartesian3.add(forward, backward, cornerDirection),
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cornerDirection
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);
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var forwardProjection = Cartesian2.Cartesian3.multiplyByScalar(
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normal,
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Cartesian2.Cartesian3.dot(forward, normal),
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scratchForwardProjection
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);
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Cartesian2.Cartesian3.subtract(forward, forwardProjection, forwardProjection);
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Cartesian2.Cartesian3.normalize(forwardProjection, forwardProjection);
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var backwardProjection = Cartesian2.Cartesian3.multiplyByScalar(
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normal,
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Cartesian2.Cartesian3.dot(backward, normal),
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scratchBackwardProjection
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);
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Cartesian2.Cartesian3.subtract(backward, backwardProjection, backwardProjection);
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Cartesian2.Cartesian3.normalize(backwardProjection, backwardProjection);
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var doCorner = !_Math.CesiumMath.equalsEpsilon(
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Math.abs(Cartesian2.Cartesian3.dot(forwardProjection, backwardProjection)),
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1.0,
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_Math.CesiumMath.EPSILON7
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);
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if (doCorner) {
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cornerDirection = Cartesian2.Cartesian3.cross(
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cornerDirection,
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normal,
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cornerDirection
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);
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cornerDirection = Cartesian2.Cartesian3.cross(
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normal,
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cornerDirection,
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cornerDirection
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);
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cornerDirection = Cartesian2.Cartesian3.normalize(cornerDirection, cornerDirection);
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var scalar =
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width /
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Math.max(
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0.25,
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Cartesian2.Cartesian3.magnitude(
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Cartesian2.Cartesian3.cross(cornerDirection, backward, scratch1)
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)
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);
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var leftIsOutside = PolylineVolumeGeometryLibrary.PolylineVolumeGeometryLibrary.angleIsGreaterThanPi(
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forward,
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backward,
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position,
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ellipsoid
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);
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cornerDirection = Cartesian2.Cartesian3.multiplyByScalar(
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cornerDirection,
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scalar,
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cornerDirection
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);
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if (leftIsOutside) {
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rightPos = Cartesian2.Cartesian3.add(position, cornerDirection, rightPos);
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center = Cartesian2.Cartesian3.add(
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rightPos,
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Cartesian2.Cartesian3.multiplyByScalar(left, width, center),
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center
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);
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leftPos = Cartesian2.Cartesian3.add(
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rightPos,
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Cartesian2.Cartesian3.multiplyByScalar(left, width * 2, leftPos),
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leftPos
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);
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scaleArray2[0] = Cartesian2.Cartesian3.clone(previousPos, scaleArray2[0]);
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scaleArray2[1] = Cartesian2.Cartesian3.clone(center, scaleArray2[1]);
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subdividedPositions = PolylinePipeline.PolylinePipeline.generateArc({
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positions: scaleArray2,
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granularity: granularity,
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ellipsoid: ellipsoid,
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});
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calculatedPositions = addShiftedPositions(
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subdividedPositions,
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left,
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width,
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calculatedPositions
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);
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if (saveAttributes) {
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calculatedLefts.push(left.x, left.y, left.z);
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calculatedNormals.push(normal.x, normal.y, normal.z);
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}
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startPoint = Cartesian2.Cartesian3.clone(leftPos, startPoint);
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left = Cartesian2.Cartesian3.normalize(
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Cartesian2.Cartesian3.cross(normal, forward, left),
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left
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);
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leftPos = Cartesian2.Cartesian3.add(
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rightPos,
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Cartesian2.Cartesian3.multiplyByScalar(left, width * 2, leftPos),
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leftPos
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);
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previousPos = Cartesian2.Cartesian3.add(
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rightPos,
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Cartesian2.Cartesian3.multiplyByScalar(left, width, previousPos),
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previousPos
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);
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if (
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cornerType === PolylineVolumeGeometryLibrary.CornerType.ROUNDED ||
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cornerType === PolylineVolumeGeometryLibrary.CornerType.BEVELED
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) {
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corners.push({
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leftPositions: computeRoundCorner(
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rightPos,
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startPoint,
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leftPos,
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cornerType,
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leftIsOutside
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),
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});
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} else {
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corners.push({
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leftPositions: computeMiteredCorner(
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position,
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Cartesian2.Cartesian3.negate(cornerDirection, cornerDirection),
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leftPos,
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leftIsOutside
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),
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});
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}
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} else {
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leftPos = Cartesian2.Cartesian3.add(position, cornerDirection, leftPos);
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center = Cartesian2.Cartesian3.add(
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leftPos,
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Cartesian2.Cartesian3.negate(
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Cartesian2.Cartesian3.multiplyByScalar(left, width, center),
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center
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),
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center
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);
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rightPos = Cartesian2.Cartesian3.add(
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leftPos,
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Cartesian2.Cartesian3.negate(
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Cartesian2.Cartesian3.multiplyByScalar(left, width * 2, rightPos),
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rightPos
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),
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rightPos
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);
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scaleArray2[0] = Cartesian2.Cartesian3.clone(previousPos, scaleArray2[0]);
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scaleArray2[1] = Cartesian2.Cartesian3.clone(center, scaleArray2[1]);
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subdividedPositions = PolylinePipeline.PolylinePipeline.generateArc({
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positions: scaleArray2,
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granularity: granularity,
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ellipsoid: ellipsoid,
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});
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calculatedPositions = addShiftedPositions(
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subdividedPositions,
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left,
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width,
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calculatedPositions
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);
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if (saveAttributes) {
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calculatedLefts.push(left.x, left.y, left.z);
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calculatedNormals.push(normal.x, normal.y, normal.z);
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}
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startPoint = Cartesian2.Cartesian3.clone(rightPos, startPoint);
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left = Cartesian2.Cartesian3.normalize(
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Cartesian2.Cartesian3.cross(normal, forward, left),
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left
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);
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rightPos = Cartesian2.Cartesian3.add(
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leftPos,
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Cartesian2.Cartesian3.negate(
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Cartesian2.Cartesian3.multiplyByScalar(left, width * 2, rightPos),
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rightPos
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),
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rightPos
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);
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previousPos = Cartesian2.Cartesian3.add(
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leftPos,
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Cartesian2.Cartesian3.negate(
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Cartesian2.Cartesian3.multiplyByScalar(left, width, previousPos),
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previousPos
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),
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previousPos
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);
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if (
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cornerType === PolylineVolumeGeometryLibrary.CornerType.ROUNDED ||
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cornerType === PolylineVolumeGeometryLibrary.CornerType.BEVELED
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) {
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corners.push({
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rightPositions: computeRoundCorner(
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leftPos,
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startPoint,
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rightPos,
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cornerType,
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leftIsOutside
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),
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});
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} else {
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corners.push({
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rightPositions: computeMiteredCorner(
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position,
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cornerDirection,
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rightPos,
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leftIsOutside
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),
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});
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}
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}
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backward = Cartesian2.Cartesian3.negate(forward, backward);
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}
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position = nextPosition;
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}
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normal = ellipsoid.geodeticSurfaceNormal(position, normal);
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scaleArray2[0] = Cartesian2.Cartesian3.clone(previousPos, scaleArray2[0]);
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scaleArray2[1] = Cartesian2.Cartesian3.clone(position, scaleArray2[1]);
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subdividedPositions = PolylinePipeline.PolylinePipeline.generateArc({
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positions: scaleArray2,
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granularity: granularity,
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ellipsoid: ellipsoid,
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});
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calculatedPositions = addShiftedPositions(
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subdividedPositions,
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left,
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width,
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calculatedPositions
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);
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if (saveAttributes) {
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calculatedLefts.push(left.x, left.y, left.z);
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calculatedNormals.push(normal.x, normal.y, normal.z);
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}
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var endPositions;
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if (cornerType === PolylineVolumeGeometryLibrary.CornerType.ROUNDED) {
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endPositions = addEndCaps(calculatedPositions);
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}
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return {
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positions: calculatedPositions,
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corners: corners,
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lefts: calculatedLefts,
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normals: calculatedNormals,
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endPositions: endPositions,
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};
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};
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exports.CorridorGeometryLibrary = CorridorGeometryLibrary;
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});
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//# sourceMappingURL=CorridorGeometryLibrary-824cd871.js.map
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