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https://github.com/OpenSpace/OpenSpace.git
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0d03177d43
* Initial restructuring of the Globebrowsing branch * Update Ghoul repository Fix include guards * More cleanup * Split texttileprovider subclasses into separate files * Move TileProviders into namespace * Convert static class methods into free functions * Splitting tile subclasses into their own files Remove `using namespace` from header file * Split TileDataSet subclass into separate file Update SGCT reference * Move shader preprocessing data into internal class * More Globebrowsing cleanup * More cleanup Remove unused Convexhull class
109 lines
4.6 KiB
C++
109 lines
4.6 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___TRIANGLESOUP___H__
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#define __OPENSPACE_MODULE_GLOBEBROWSING___TRIANGLESOUP___H__
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#include <ghoul/glm.h>
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#include <ghoul/misc/boolean.h>
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#include <ghoul/opengl/ghoul_gl.h>
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#include <vector>
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namespace openspace {
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namespace globebrowsing {
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/**
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* Class to hold vertex data and handling OpenGL interfacing and rendering.
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* A <code>TriangleSoup</code> has all data needed such as position buffer and normal
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* buffer but all data is not necessarily needed for all purpouses so some vertex buffers
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* such as normals can be disabled if not needed.
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*/
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// TODO : Possibly render triangle strips in this class instead of triangles since
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// that is faster
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class TriangleSoup {
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public:
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using Positions = ghoul::Boolean;
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using TextureCoordinates = ghoul::Boolean;
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using Normals = ghoul::Boolean;
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TriangleSoup(
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std::vector<unsigned int> elements, // At least elements are required
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Positions usePositions = Positions::No,
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TextureCoordinates useTextures = TextureCoordinates::No,
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Normals useNormals = Normals::No);
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~TriangleSoup();
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// Setters
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void setVertexPositions(std::vector<glm::vec4> positions);
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void setVertexTextureCoordinates(std::vector<glm::vec2> textures);
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void setVertexNormals(std::vector<glm::vec3> normals);
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void setElements(std::vector<unsigned int> elements);
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/**
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* Calls OpenGL's draw function to draw the triangles defined in the vertex buffers
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* using the current bound program object.
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* The vertex buffer attribute input locations to the shader program comes in the
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* order of positions (0), texture coordinates (1) and normals (2).
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* The input locations in the shader program should be specified to match these
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* locations.
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*/
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void drawUsingActiveProgram();
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protected:
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// Determines what attribute data is in use
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bool _useVertexPositions;
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bool _useTextureCoordinates;
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bool _useVertexNormals;
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struct Vertex {
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GLfloat position[4];
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GLfloat texture[2];
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GLfloat normal[3];
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private:
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GLubyte padding[28]; // Pads the struct out to 64 bytes for performance increase
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};
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// Vertex data
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std::vector<Vertex> _vertexData;
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std::vector<GLuint> _elementData;
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private:
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bool updateDataOnGPU();
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// GL handles
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GLuint _vaoID;
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GLuint _vertexBufferID;
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GLuint _elementBufferID;
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bool _gpuDataNeedUpdate;
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};
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} // namespace globebrowsing
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} // namespace openspace
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#endif // __OPENSPACE_MODULE_GLOBEBROWSING___TRIANGLESOUP___H__
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