51 lines
1.7 KiB
C++
51 lines
1.7 KiB
C++
// include/Terrain.h
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#ifndef TERRAIN_H
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#define TERRAIN_H
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#include <glm/glm.hpp>
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#include <vector>
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#include <GL/glew.h> // Include GLEW for OpenGL types like GLuint
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#include "Shader.h"
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class Terrain {
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public:
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Terrain(int gridSize, float gridSpacing);
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~Terrain();
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bool init(GLuint heightMapTextureID);
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void cleanup();
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glm::vec3 getVertex(int x, int z) const; // Get vertex position at grid index (x, z)
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float sampleHeightWorld(float worldX, float worldZ) const;
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float sampleGradientMagnitudeWorld(float worldX, float worldZ) const;
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float sampleDirectionalGradientWorld(float worldX, float worldZ, const glm::vec2& directionWorld) const;
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bool isInsideBoundsWorld(float worldX, float worldZ) const;
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int getGridSize() const { return gridSize; }
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float getGridSpacing() const { return gridSpacing; }
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GLuint getVAO() const { return vaoID; }
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GLuint getIndexCount() const { return indexCount; }
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glm::vec3 getNormal(int x, int z) const;
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glm::vec3 getHighestPoint() const { return highestPoint; }
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std::vector<glm::vec3> getHighestPeaks(int count, float minDistanceWorld) const;
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private:
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int gridSize;
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float gridSpacing;
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std::vector<glm::vec3> vertices;
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std::vector<glm::vec3> normals;
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std::vector<glm::vec2> texCoords;
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GLuint vertexBufferID;
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GLuint normalBufferID;
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GLuint texCoordBufferID;
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GLuint indexBufferID;
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GLuint vaoID;
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unsigned int indexCount;
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glm::vec3 highestPoint;
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void generateGrid(GLuint heightMapTextureID); // Generate the initial grid of vertices
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void createBuffers(); // Create and populate VBOs and IBO
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void updateBuffers(); // Update VBO data (not needed for static terrain in this example, but good to have)
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};
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#endif // TERRAIN_H
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