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/*
* Copyright 2020 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.
*/
/** @file vertex.h
* @brief Functions for working with cell vertexes.
*/
#ifndef H3VERTEX_H
#define H3VERTEX_H
#include "h3Index.h"
#include "faceijk.h"
/** @struct PentagonDirectionFaces
* @brief The faces in each axial direction of a given pentagon base cell
*/
typedef struct {
int baseCell; ///< base cell number
int faces[NUM_PENT_VERTS]; ///< face numbers for each axial direction,
/// in order, starting with J
} PentagonDirectionFaces;
/** Invalid vertex number */
#define INVALID_VERTEX_NUM -1
/** Max number of faces a base cell's descendants may appear on */
#define MAX_BASE_CELL_FACES 5
int vertexRotations(H3Index cell);
int vertexNumForDirection(const H3Index origin, const Direction direction);
#endif
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