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/* | |
* Copyright 2018 Uber Technologies, Inc. | |
* | |
* Licensed under the Apache License, Version 2.0 (the "License"); | |
* you may not use this file except in compliance with the License. | |
* You may obtain a copy of the License at | |
* | |
* http://www.apache.org/licenses/LICENSE-2.0 | |
* | |
* Unless required by applicable law or agreed to in writing, software | |
* distributed under the License is distributed on an "AS IS" BASIS, | |
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. | |
* See the License for the specific language governing permissions and | |
* limitations under the License. | |
*/ | |
/** | |
* Example program that finds the edge between two indexes and prints their | |
* boundary vertices. | |
*/ | |
#include <h3/h3api.h> | |
#include <inttypes.h> | |
#include <stdio.h> | |
int main(int argc, char *argv[]) { | |
H3Index origin = 0x8a2a1072b59ffffL; | |
H3Index destination = 0x8a2a1072b597fffL; // north of the origin | |
H3Index edge = getH3UnidirectionalEdge(origin, destination); | |
printf("The edge is %" PRIx64 "\n", edge); | |
GeoBoundary boundary; | |
getH3UnidirectionalEdgeBoundary(edge, &boundary); | |
for (int v = 0; v < boundary.numVerts; v++) { | |
printf("Edge vertex #%d: %lf, %lf\n", v, | |
radsToDegs(boundary.verts[v].lat), | |
radsToDegs(boundary.verts[v].lon)); | |
} | |
// Output: | |
// The edge is 16a2a1072b59ffff | |
// Edge vertex #0: 40.690059, -74.044152 | |
// Edge vertex #1: 40.689908, -74.045062 | |
} |