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https://github.com/OpenSpace/OpenSpace.git
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94 lines
4.1 KiB
C++
94 lines
4.1 KiB
C++
/*****************************************************************************************
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* *
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* OpenSpace *
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* *
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* Copyright (c) 2014-2016 *
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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 __PATCHCOVERAGEPROVIDER_H__
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#define __PATCHCOVERAGEPROVIDER_H__
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#include <ghoul/logging/logmanager.h>
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#include <modules/globebrowsing/globes/chunkindex.h>
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#include <modules/globebrowsing/geodetics/geodetic2.h>
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#include <modules/globebrowsing/other/tileprovider.h>
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#include <ghoul/opengl/texture.h>
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//////////////////////////////////////////////////////////////////////////////////////////
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// PATCH COVERAGE PROVIDER //
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//////////////////////////////////////////////////////////////////////////////////////////
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namespace openspace {
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using namespace ghoul::opengl;
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struct PatchCoverage
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{
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using TextureTransformPair = std::pair<std::shared_ptr<Texture>, glm::mat3>;
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TextureTransformPair textureTransformPairs[4];
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};
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class PatchCoverageProvider
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{
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public:
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PatchCoverageProvider(
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Geodetic2 sizeLevel0,
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Geodetic2 offsetLevel0,
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int depth);
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~PatchCoverageProvider();
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/**
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Returns the index of the tile at an appropriate level.
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Appropriate meaning that the tile should be at as high level as possible
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Without the tile being smaller than the patch in lat-lon space.
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The tile is at least as big as the patch.
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*/
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ChunkIndex getChunkIndex(const GeodeticPatch& patch);
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/**
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A transformation (translation and scaling) from the texture space of a patch
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to the texture space of a tile.
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*/
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glm::mat3 getUvTransformationPatchToTile(
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GeodeticPatch patch,
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const ChunkIndex& chunkIndex);
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/**
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Overloaded function
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*/
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glm::mat3 getUvTransformationPatchToTile(
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GeodeticPatch patch,
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GeodeticPatch tile);
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PatchCoverage getCoverage(
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GeodeticPatch patch,
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std::shared_ptr<TileProvider> tileProvider);
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private:
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Geodetic2 _sizeLevel0;
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Geodetic2 _offsetLevel0;
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int _depth;
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};
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} // namespace openspace
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#endif // __PATCHCOVERAGEPROVIDER_H__
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