mirror of
https://github.com/OpenSpace/OpenSpace.git
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122 lines
4.0 KiB
C++
122 lines
4.0 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2017 *
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* *
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* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
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* software and associated documentation files (the "Software"), to deal in the Software *
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* without restriction, including without limitation the rights to use, copy, modify, *
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* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
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* permit persons to whom the Software is furnished to do so, subject to the following *
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* conditions: *
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* *
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* The above copyright notice and this permission notice shall be included in all copies *
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* or substantial portions of the Software. *
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* *
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
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* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
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* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
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* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
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* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
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* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
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****************************************************************************************/
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#ifndef __OPENSPACE_MODULE_GLOBEBROWSING___TILE_INDEX___H__
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#define __OPENSPACE_MODULE_GLOBEBROWSING___TILE_INDEX___H__
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#include <modules/globebrowsing/tile/quad.h>
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#include <ghoul/glm.h>
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#include <stdint.h>
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namespace ghoul {
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class Dictionary;
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}
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namespace openspace {
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namespace globebrowsing {
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struct Geodetic2;
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enum CardinalDirection {
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WEST = 0,
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EAST,
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NORTH,
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SOUTH,
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};
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struct TileIndex {
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using TileHashKey = uint64_t;
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int x, y, level;
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TileIndex(int x = 0, int y = 0, int level = 0);
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TileIndex(const TileIndex& other);
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/**
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* Creates the geodetic tile index for the Geodetic patch that covers the
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* point p at the specified level
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*/
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TileIndex(const Geodetic2& point, int level);
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/**
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* Initializes a TileIndex from a Dictionary
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*/
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TileIndex(const ghoul::Dictionary& dict);
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bool hasParent() const {
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return level > 0;
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}
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TileIndex parent() const;
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TileIndex& operator--();
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TileIndex operator--(int);
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TileIndex& operator-=(unsigned int levels);
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inline bool isWestChild() const {
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return x % 2 == 0;
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}
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inline bool isEastChild() const {
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return x % 2 == 1;
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}
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inline bool isNorthChild() const {
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return y % 2 == 0;
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}
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inline bool isSouthChild() const {
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return y % 2 == 1;
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}
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TileIndex child(Quad q) const;
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glm::vec2 positionRelativeParent() const;
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std::string toString() const;
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/**
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* Gets the tile at a specified offset from this tile.
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* Accepts delta indices ranging from [-2^level, Infinity[
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*/
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TileIndex getRelatedTile(int deltaX, int deltaY) const;
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int manhattan(const TileIndex& other) const;
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TileHashKey hashKey() const;
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bool operator==(const TileIndex& other) const;
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};
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std::ostream& operator<<(std::ostream& os, const TileIndex& ti);
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} // namespace globebrowsing
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} // namespace openspace
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#endif // __OPENSPACE_MODULE_GLOBEBROWSING___TILE_INDEX___H__
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