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OpenSpace/modules/globebrowsing/meshes/grid.h
2016-04-25 13:58:32 -04:00

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3.4 KiB
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/*****************************************************************************************
* *
* OpenSpace *
* *
* Copyright (c) 2014-2016 *
* *
* Permission is hereby granted, free of charge, to any person obtaining a copy of this *
* software and associated documentation files (the "Software"), to deal in the Software *
* without restriction, including without limitation the rights to use, copy, modify, *
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to *
* permit persons to whom the Software is furnished to do so, subject to the following *
* conditions: *
* *
* The above copyright notice and this permission notice shall be included in all copies *
* or substantial portions of the Software. *
* *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, *
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A *
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT *
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF *
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE *
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. *
****************************************************************************************/
#ifndef __GRIDGEOMETRY_H__
#define __GRIDGEOMETRY_H__
#include <ghoul/opengl/ghoul_gl.h>
#include <glm/glm.hpp>
#include <modules/globebrowsing/meshes/trianglesoup.h>
#include <vector>
namespace openspace {
class Grid
{
public:
Grid(
int xSegments,
int ySegments,
TriangleSoup::Positions usePositions = TriangleSoup::Positions::No,
TriangleSoup::TextureCoordinates useTextures = TriangleSoup::TextureCoordinates::No,
TriangleSoup::Normals useNormals = TriangleSoup::Normals::No);
~Grid();
TriangleSoup& geometry();
/**
Returns the number of grid cells in the x direction. Hence the number of vertices
in the x direction is xResolution + 1.
*/
virtual int xSegments() const = 0;
/**
Returns the number of grid cells in the y direction. Hence the number of vertices
in the y direction is xResolution + 1.
*/
virtual int ySegments() const = 0;
protected:
virtual std::vector<GLuint> CreateElements( int xSegments, int ySegments) = 0;
virtual std::vector<glm::vec4> CreatePositions( int xSegments, int ySegments) = 0;
virtual std::vector<glm::vec2> CreateTextureCoordinates( int xSegments, int ySegments) = 0;
virtual std::vector<glm::vec3> CreateNormals( int xSegments, int ySegments) = 0;
std::unique_ptr<TriangleSoup> _geometry;
const int _xSegments;
const int _ySegments;
};
} // namespace openspace
#endif // __GRIDGEOMETRY_H__