import arrayFill from './arrayFill.js';
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import arrayRemoveDuplicates from './arrayRemoveDuplicates.js';
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import BoundingSphere from './BoundingSphere.js';
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import Cartesian3 from './Cartesian3.js';
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import Check from './Check.js';
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import ComponentDatatype from './ComponentDatatype.js';
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import CornerType from './CornerType.js';
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import CorridorGeometryLibrary from './CorridorGeometryLibrary.js';
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import defaultValue from './defaultValue.js';
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import defined from './defined.js';
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import Ellipsoid from './Ellipsoid.js';
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import Geometry from './Geometry.js';
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import GeometryAttribute from './GeometryAttribute.js';
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import GeometryAttributes from './GeometryAttributes.js';
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import GeometryOffsetAttribute from './GeometryOffsetAttribute.js';
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import IndexDatatype from './IndexDatatype.js';
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import CesiumMath from './Math.js';
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import PolygonPipeline from './PolygonPipeline.js';
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import PrimitiveType from './PrimitiveType.js';
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var cartesian1 = new Cartesian3();
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var cartesian2 = new Cartesian3();
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var cartesian3 = new Cartesian3();
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function scaleToSurface(positions, ellipsoid) {
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for (var i = 0; i < positions.length; i++) {
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positions[i] = ellipsoid.scaleToGeodeticSurface(positions[i], positions[i]);
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}
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return positions;
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}
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function combine(computedPositions, cornerType) {
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var wallIndices = [];
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var positions = computedPositions.positions;
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var corners = computedPositions.corners;
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var endPositions = computedPositions.endPositions;
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var attributes = new GeometryAttributes();
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var corner;
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var leftCount = 0;
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var rightCount = 0;
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var i;
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var indicesLength = 0;
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var length;
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for (i = 0; i < positions.length; i += 2) {
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length = positions[i].length - 3;
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leftCount += length; //subtracting 3 to account for duplicate points at corners
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indicesLength += length / 3 * 4;
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rightCount += positions[i + 1].length - 3;
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}
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leftCount += 3; //add back count for end positions
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rightCount += 3;
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for (i = 0; i < corners.length; i++) {
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corner = corners[i];
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var leftSide = corners[i].leftPositions;
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if (defined(leftSide)) {
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length = leftSide.length;
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leftCount += length;
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indicesLength += length / 3 * 2;
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} else {
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length = corners[i].rightPositions.length;
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rightCount += length;
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indicesLength += length / 3 * 2;
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}
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}
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var addEndPositions = defined(endPositions);
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var endPositionLength;
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if (addEndPositions) {
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endPositionLength = endPositions[0].length - 3;
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leftCount += endPositionLength;
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rightCount += endPositionLength;
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endPositionLength /= 3;
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indicesLength += endPositionLength * 4;
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}
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var size = leftCount + rightCount;
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var finalPositions = new Float64Array(size);
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var front = 0;
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var back = size - 1;
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var UL, LL, UR, LR;
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var rightPos, leftPos;
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var halfLength = endPositionLength / 2;
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var indices = IndexDatatype.createTypedArray(size / 3, indicesLength + 4);
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var index = 0;
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indices[index++] = front / 3;
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indices[index++] = (back - 2) / 3;
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if (addEndPositions) { // add rounded end
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wallIndices.push(front / 3);
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leftPos = cartesian1;
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rightPos = cartesian2;
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var firstEndPositions = endPositions[0];
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for (i = 0; i < halfLength; i++) {
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leftPos = Cartesian3.fromArray(firstEndPositions, (halfLength - 1 - i) * 3, leftPos);
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rightPos = Cartesian3.fromArray(firstEndPositions, (halfLength + i) * 3, rightPos);
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CorridorGeometryLibrary.addAttribute(finalPositions, rightPos, front);
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CorridorGeometryLibrary.addAttribute(finalPositions, leftPos, undefined, back);
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LL = front / 3;
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LR = LL + 1;
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UL = (back - 2) / 3;
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UR = UL - 1;
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indices[index++] = UL;
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indices[index++] = UR;
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indices[index++] = LL;
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indices[index++] = LR;
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front += 3;
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back -= 3;
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}
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}
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var posIndex = 0;
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var rightEdge = positions[posIndex++]; //add first two edges
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var leftEdge = positions[posIndex++];
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finalPositions.set(rightEdge, front);
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finalPositions.set(leftEdge, back - leftEdge.length + 1);
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length = leftEdge.length - 3;
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wallIndices.push(front / 3, (back - 2) / 3);
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for (i = 0; i < length; i += 3) {
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LL = front / 3;
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LR = LL + 1;
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UL = (back - 2) / 3;
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UR = UL - 1;
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indices[index++] = UL;
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indices[index++] = UR;
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indices[index++] = LL;
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indices[index++] = LR;
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front += 3;
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back -= 3;
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}
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for (i = 0; i < corners.length; i++) {
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var j;
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corner = corners[i];
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var l = corner.leftPositions;
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var r = corner.rightPositions;
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var start;
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var outsidePoint = cartesian3;
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if (defined(l)) {
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back -= 3;
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start = UR;
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wallIndices.push(LR);
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for (j = 0; j < l.length / 3; j++) {
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outsidePoint = Cartesian3.fromArray(l, j * 3, outsidePoint);
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indices[index++] = start - j - 1;
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indices[index++] = start - j;
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CorridorGeometryLibrary.addAttribute(finalPositions, outsidePoint, undefined, back);
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back -= 3;
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}
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wallIndices.push(start - Math.floor(l.length / 6));
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if (cornerType === CornerType.BEVELED) {
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wallIndices.push((back - 2) / 3 + 1);
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}
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front += 3;
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} else {
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front += 3;
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start = LR;
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wallIndices.push(UR);
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for (j = 0; j < r.length / 3; j++) {
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outsidePoint = Cartesian3.fromArray(r, j * 3, outsidePoint);
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indices[index++] = start + j;
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indices[index++] = start + j + 1;
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CorridorGeometryLibrary.addAttribute(finalPositions, outsidePoint, front);
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front += 3;
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}
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wallIndices.push(start + Math.floor(r.length / 6));
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if (cornerType === CornerType.BEVELED) {
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wallIndices.push(front / 3 - 1);
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}
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back -= 3;
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}
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rightEdge = positions[posIndex++];
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leftEdge = positions[posIndex++];
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rightEdge.splice(0, 3); //remove duplicate points added by corner
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leftEdge.splice(leftEdge.length - 3, 3);
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finalPositions.set(rightEdge, front);
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finalPositions.set(leftEdge, back - leftEdge.length + 1);
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length = leftEdge.length - 3;
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for (j = 0; j < leftEdge.length; j += 3) {
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LR = front / 3;
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LL = LR - 1;
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UR = (back - 2) / 3;
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UL = UR + 1;
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indices[index++] = UL;
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indices[index++] = UR;
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indices[index++] = LL;
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indices[index++] = LR;
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front += 3;
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back -= 3;
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}
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front -= 3;
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back += 3;
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wallIndices.push(front / 3, (back - 2) / 3);
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}
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if (addEndPositions) { // add rounded end
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front += 3;
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back -= 3;
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leftPos = cartesian1;
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rightPos = cartesian2;
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var lastEndPositions = endPositions[1];
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for (i = 0; i < halfLength; i++) {
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leftPos = Cartesian3.fromArray(lastEndPositions, (endPositionLength - i - 1) * 3, leftPos);
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rightPos = Cartesian3.fromArray(lastEndPositions, i * 3, rightPos);
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CorridorGeometryLibrary.addAttribute(finalPositions, leftPos, undefined, back);
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CorridorGeometryLibrary.addAttribute(finalPositions, rightPos, front);
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LR = front / 3;
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LL = LR - 1;
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UR = (back - 2) / 3;
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UL = UR + 1;
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indices[index++] = UL;
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indices[index++] = UR;
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indices[index++] = LL;
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indices[index++] = LR;
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front += 3;
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back -= 3;
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}
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wallIndices.push(front / 3);
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} else {
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wallIndices.push(front / 3, (back - 2) / 3);
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}
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indices[index++] = front / 3;
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indices[index++] = (back - 2) / 3;
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attributes.position = new GeometryAttribute({
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componentDatatype : ComponentDatatype.DOUBLE,
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componentsPerAttribute : 3,
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values : finalPositions
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});
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return {
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attributes : attributes,
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indices : indices,
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wallIndices : wallIndices
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};
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}
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function computePositionsExtruded(params) {
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var ellipsoid = params.ellipsoid;
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var computedPositions = CorridorGeometryLibrary.computePositions(params);
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var attr = combine(computedPositions, params.cornerType);
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var wallIndices = attr.wallIndices;
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var height = params.height;
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var extrudedHeight = params.extrudedHeight;
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var attributes = attr.attributes;
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var indices = attr.indices;
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var positions = attributes.position.values;
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var length = positions.length;
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var extrudedPositions = new Float64Array(length);
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extrudedPositions.set(positions);
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var newPositions = new Float64Array(length * 2);
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positions = PolygonPipeline.scaleToGeodeticHeight(positions, height, ellipsoid);
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extrudedPositions = PolygonPipeline.scaleToGeodeticHeight(extrudedPositions, extrudedHeight, ellipsoid);
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newPositions.set(positions);
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newPositions.set(extrudedPositions, length);
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attributes.position.values = newPositions;
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length /= 3;
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if (defined(params.offsetAttribute)) {
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var applyOffset = new Uint8Array(length * 2);
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if (params.offsetAttribute === GeometryOffsetAttribute.TOP) {
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applyOffset = arrayFill(applyOffset, 1, 0, length);
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} else {
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var applyOffsetValue = params.offsetAttribute === GeometryOffsetAttribute.NONE ? 0 : 1;
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applyOffset = arrayFill(applyOffset, applyOffsetValue);
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}
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attributes.applyOffset = new GeometryAttribute({
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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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var i;
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var iLength = indices.length;
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var newIndices = IndexDatatype.createTypedArray(newPositions.length / 3, (iLength + wallIndices.length) * 2);
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newIndices.set(indices);
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var index = iLength;
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for (i = 0; i < iLength; i += 2) { // bottom indices
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var v0 = indices[i];
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var v1 = indices[i + 1];
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newIndices[index++] = v0 + length;
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newIndices[index++] = v1 + length;
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}
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var UL, LL;
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for (i = 0; i < wallIndices.length; i++) { //wall indices
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UL = wallIndices[i];
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LL = UL + length;
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newIndices[index++] = UL;
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newIndices[index++] = LL;
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}
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return {
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attributes : attributes,
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indices : newIndices
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};
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}
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/**
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* A description of a corridor outline.
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*
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* @alias CorridorOutlineGeometry
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* @constructor
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*
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* @param {Object} options Object with the following properties:
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* @param {Cartesian3[]} options.positions An array of positions that define the center of the corridor outline.
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* @param {Number} options.width The distance between the edges of the corridor outline.
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* @param {Ellipsoid} [options.ellipsoid=Ellipsoid.WGS84] The ellipsoid to be used as a reference.
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* @param {Number} [options.granularity=CesiumMath.RADIANS_PER_DEGREE] The distance, in radians, between each latitude and longitude. Determines the number of positions in the buffer.
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* @param {Number} [options.height=0] The distance in meters between the positions and the ellipsoid surface.
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* @param {Number} [options.extrudedHeight] The distance in meters between the extruded face and the ellipsoid surface.
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* @param {CornerType} [options.cornerType=CornerType.ROUNDED] Determines the style of the corners.
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*
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* @see CorridorOutlineGeometry.createGeometry
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*
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* @example
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* var corridor = new Cesium.CorridorOutlineGeometry({
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* positions : Cesium.Cartesian3.fromDegreesArray([-72.0, 40.0, -70.0, 35.0]),
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* width : 100000
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* });
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*/
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function CorridorOutlineGeometry(options) {
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options = defaultValue(options, defaultValue.EMPTY_OBJECT);
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var positions = options.positions;
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var width = options.width;
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//>>includeStart('debug', pragmas.debug);
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Check.typeOf.object('options.positions', positions);
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Check.typeOf.number('options.width', width);
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//>>includeEnd('debug');
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var height = defaultValue(options.height, 0.0);
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var extrudedHeight = defaultValue(options.extrudedHeight, height);
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this._positions = positions;
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this._ellipsoid = Ellipsoid.clone(defaultValue(options.ellipsoid, Ellipsoid.WGS84));
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this._width = width;
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this._height = Math.max(height, extrudedHeight);
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this._extrudedHeight = Math.min(height, extrudedHeight);
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this._cornerType = defaultValue(options.cornerType, CornerType.ROUNDED);
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this._granularity = defaultValue(options.granularity, CesiumMath.RADIANS_PER_DEGREE);
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this._offsetAttribute = options.offsetAttribute;
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this._workerName = 'createCorridorOutlineGeometry';
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/**
|
* The number of elements used to pack the object into an array.
|
* @type {Number}
|
*/
|
this.packedLength = 1 + positions.length * Cartesian3.packedLength + Ellipsoid.packedLength + 6;
|
}
|
|
/**
|
* Stores the provided instance into the provided array.
|
*
|
* @param {CorridorOutlineGeometry} value The value to pack.
|
* @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.
|
*
|
* @returns {Number[]} The array that was packed into
|
*/
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CorridorOutlineGeometry.pack = function(value, array, startingIndex) {
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//>>includeStart('debug', pragmas.debug);
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Check.typeOf.object('value', value);
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Check.typeOf.object('array', array);
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//>>includeEnd('debug');
|
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startingIndex = defaultValue(startingIndex, 0);
|
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var positions = value._positions;
|
var length = positions.length;
|
array[startingIndex++] = length;
|
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for (var i = 0; i < length; ++i, startingIndex += Cartesian3.packedLength) {
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Cartesian3.pack(positions[i], array, startingIndex);
|
}
|
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Ellipsoid.pack(value._ellipsoid, array, startingIndex);
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startingIndex += Ellipsoid.packedLength;
|
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array[startingIndex++] = value._width;
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array[startingIndex++] = value._height;
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array[startingIndex++] = value._extrudedHeight;
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array[startingIndex++] = value._cornerType;
|
array[startingIndex++] = value._granularity;
|
array[startingIndex] = defaultValue(value._offsetAttribute, -1);
|
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return array;
|
};
|
|
var scratchEllipsoid = Ellipsoid.clone(Ellipsoid.UNIT_SPHERE);
|
var scratchOptions = {
|
positions : undefined,
|
ellipsoid : scratchEllipsoid,
|
width : undefined,
|
height : undefined,
|
extrudedHeight : undefined,
|
cornerType : undefined,
|
granularity : undefined,
|
offsetAttribute: undefined
|
};
|
|
/**
|
* Retrieves an instance from a packed array.
|
*
|
* @param {Number[]} array The packed array.
|
* @param {Number} [startingIndex=0] The starting index of the element to be unpacked.
|
* @param {CorridorOutlineGeometry} [result] The object into which to store the result.
|
* @returns {CorridorOutlineGeometry} The modified result parameter or a new CorridorOutlineGeometry instance if one was not provided.
|
*/
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CorridorOutlineGeometry.unpack = function(array, startingIndex, result) {
|
//>>includeStart('debug', pragmas.debug);
|
Check.typeOf.object('array', array);
|
//>>includeEnd('debug');
|
|
startingIndex = defaultValue(startingIndex, 0);
|
|
var length = array[startingIndex++];
|
var positions = new Array(length);
|
|
for (var i = 0; i < length; ++i, startingIndex += Cartesian3.packedLength) {
|
positions[i] = Cartesian3.unpack(array, startingIndex);
|
}
|
|
var ellipsoid = Ellipsoid.unpack(array, startingIndex, scratchEllipsoid);
|
startingIndex += Ellipsoid.packedLength;
|
|
var width = array[startingIndex++];
|
var height = array[startingIndex++];
|
var extrudedHeight = array[startingIndex++];
|
var cornerType = array[startingIndex++];
|
var granularity = array[startingIndex++];
|
var offsetAttribute = array[startingIndex];
|
|
if (!defined(result)) {
|
scratchOptions.positions = positions;
|
scratchOptions.width = width;
|
scratchOptions.height = height;
|
scratchOptions.extrudedHeight = extrudedHeight;
|
scratchOptions.cornerType = cornerType;
|
scratchOptions.granularity = granularity;
|
scratchOptions.offsetAttribute = offsetAttribute === -1 ? undefined : offsetAttribute;
|
return new CorridorOutlineGeometry(scratchOptions);
|
}
|
|
result._positions = positions;
|
result._ellipsoid = Ellipsoid.clone(ellipsoid, result._ellipsoid);
|
result._width = width;
|
result._height = height;
|
result._extrudedHeight = extrudedHeight;
|
result._cornerType = cornerType;
|
result._granularity = granularity;
|
result._offsetAttribute = offsetAttribute === -1 ? undefined : offsetAttribute;
|
|
return result;
|
};
|
|
/**
|
* Computes the geometric representation of a corridor, including its vertices, indices, and a bounding sphere.
|
*
|
* @param {CorridorOutlineGeometry} corridorOutlineGeometry A description of the corridor.
|
* @returns {Geometry|undefined} The computed vertices and indices.
|
*/
|
CorridorOutlineGeometry.createGeometry = function(corridorOutlineGeometry) {
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var positions = corridorOutlineGeometry._positions;
|
var width = corridorOutlineGeometry._width;
|
var ellipsoid = corridorOutlineGeometry._ellipsoid;
|
|
positions = scaleToSurface(positions, ellipsoid);
|
var cleanPositions = arrayRemoveDuplicates(positions, Cartesian3.equalsEpsilon);
|
|
if ((cleanPositions.length < 2) || (width <= 0)) {
|
return;
|
}
|
|
var height = corridorOutlineGeometry._height;
|
var extrudedHeight = corridorOutlineGeometry._extrudedHeight;
|
var extrude = !CesiumMath.equalsEpsilon(height, extrudedHeight, 0, CesiumMath.EPSILON2);
|
|
var params = {
|
ellipsoid : ellipsoid,
|
positions : cleanPositions,
|
width : width,
|
cornerType : corridorOutlineGeometry._cornerType,
|
granularity : corridorOutlineGeometry._granularity,
|
saveAttributes : false
|
};
|
var attr;
|
if (extrude) {
|
params.height = height;
|
params.extrudedHeight = extrudedHeight;
|
params.offsetAttribute = corridorOutlineGeometry._offsetAttribute;
|
attr = computePositionsExtruded(params);
|
} else {
|
var computedPositions = CorridorGeometryLibrary.computePositions(params);
|
attr = combine(computedPositions, params.cornerType);
|
attr.attributes.position.values = PolygonPipeline.scaleToGeodeticHeight(attr.attributes.position.values, height, ellipsoid);
|
|
if (defined(corridorOutlineGeometry._offsetAttribute)) {
|
var length = attr.attributes.position.values.length;
|
var applyOffset = new Uint8Array(length / 3);
|
var offsetValue = corridorOutlineGeometry._offsetAttribute === GeometryOffsetAttribute.NONE ? 0 : 1;
|
arrayFill(applyOffset, offsetValue);
|
attr.attributes.applyOffset = new GeometryAttribute({
|
componentDatatype : ComponentDatatype.UNSIGNED_BYTE,
|
componentsPerAttribute : 1,
|
values: applyOffset
|
});
|
}
|
}
|
var attributes = attr.attributes;
|
var boundingSphere = BoundingSphere.fromVertices(attributes.position.values, undefined, 3);
|
|
return new Geometry({
|
attributes : attributes,
|
indices : attr.indices,
|
primitiveType : PrimitiveType.LINES,
|
boundingSphere : boundingSphere,
|
offsetAttribute : corridorOutlineGeometry._offsetAttribute
|
});
|
};
|
export default CorridorOutlineGeometry;
|
