98 lines
2.2 KiB
C++
98 lines
2.2 KiB
C++
#ifndef OPENGLTERRAINCHUNK_H
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#define OPENGLTERRAINCHUNK_H
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#include "opengl_global.h"
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class QImage;
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namespace paysages {
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namespace opengl {
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class OPENGLSHARED_EXPORT OpenGLTerrainChunk {
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public:
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OpenGLTerrainChunk(OpenGLRenderer *renderer, double x, double z, double size, int nbchunks);
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~OpenGLTerrainChunk();
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bool maintain();
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void updatePriority(CameraDefinition *camera);
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void render(OpenGLShaderProgram *program);
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void askReset(bool topology = true, bool texture = true);
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void askInterrupt();
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void askResume();
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inline int getVerticesLevel() const {
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return vertices_level;
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}
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inline double getPriority() const {
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return priority;
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}
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inline const OpenGLVertexArray *getVertices() const {
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return vertices;
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}
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/**
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* Release any allocated resource in the opengl context.
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*
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* Must be called in the opengl rendering thread, and before the destructor is called.
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*/
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void destroy(OpenGLFunctions *functions);
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/**
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* Fill 'vertices' with a quick initial set of vertices, that can be augmented later using 'augmentVertices'.
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*/
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void setFirstStepVertices();
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/**
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* Improve the level of detail of tessellated vertices in 'vertices'.
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*
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* This will double the existing resolution.
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*/
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void augmentVertices();
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/**
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* Update 'vertices' using 'source'.
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*/
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void updateVertices(const OpenGLVertexArray &source, int vertice_level);
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/**
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* Set a square (two triangles) in 'vertices_next'.
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*/
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void fillVerticesFromSquare(OpenGLVertexArray *array, int index_offset, double x, double z, double size);
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private:
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Vector3 getCenter();
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double priority;
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double _startx;
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double _startz;
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double _size;
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double _overall_step;
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OpenGLVertexArray *vertices;
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int vertices_level;
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Mutex *_lock_data;
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OpenGLRenderer *_renderer;
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OpenGLSharedState *glstate;
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bool _reset_topology;
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bool _reset_texture;
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bool interrupt;
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QImage *_texture;
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bool _texture_changed;
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int _texture_current_size;
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int _texture_wanted_size;
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int _texture_max_size;
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// LOD control
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double distance_to_camera;
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};
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}
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}
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#endif // OPENGLTERRAINCHUNK_H
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