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70 lines
3.4 KiB
C++
70 lines
3.4 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 __CLIPMAPGEOMETRY_H__
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#define __CLIPMAPGEOMETRY_H__
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#include <modules/globebrowsing/rendering/geometry.h>
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#include <vector>
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#include <glm/glm.hpp>
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namespace openspace {
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class ClipMapGeometry : public Geometry
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{
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public:
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ClipMapGeometry(
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unsigned int resolution,
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Positions usePositions = Positions::No,
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TextureCoordinates useTextures = TextureCoordinates::Yes,
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Normals useNormals = Normals::No
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);
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~ClipMapGeometry();
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const unsigned int resolution() const;
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static size_t numVerticesBottom(unsigned int resolution);
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static size_t numVerticesLeft(unsigned int resolution);
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static size_t numVerticesRight(unsigned int resolution);
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static size_t numVerticesTop(unsigned int resolution);
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static size_t numElements(unsigned int resolution);
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static size_t numVertices(unsigned int resolution);
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private:
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static std::vector<GLuint> CreateElements(unsigned int resoluion);
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static std::vector<glm::vec4> CreatePositions(unsigned int resolution);
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static std::vector<glm::vec2> CreateTextureCoordinates(unsigned int resolution);
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static std::vector<glm::vec3> CreateNormals(unsigned int resolution);
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static void validate(unsigned int resolution);
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// _resolution defines how many grid squares the geometry has in one direction.
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// In its uncontracted state, the clipmap geometry will have two extra grid squares
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// in each direction.
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unsigned int _resolution;
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};
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} // namespace openspace
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#endif // __CLIPMAPGEOMETRY_H__
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