#ifndef __PLANET_H__
#define __PLANET_H__

#include "util/Common.h"
#include "util/SimplexNoise.h"
#include "Shader.h"
#include "Camera.h"

#include "planet/PlanetIndexBuffer.h"

struct PlanetNoiseParams {
	float frequency;
	float amplitude;
	float lacunarity;
	float persistence;
};

class PlanetFace;
class PlanetFaceNode;
class Planet
{
	public:
		Planet(glm::vec3 position, float radius, PlanetNoiseParams &noiseParams);
		~Planet();

		inline void setLightDirection(glm::vec3 lightDir) { m_lightDir = lightDir; }
		inline glm::vec3 getLightDirection() const { return m_lightDir; }

		inline float getRadius() const { return m_radius; }
		inline glm::vec3 getPosition() const { return m_position; }

		void tick(Camera* camera, GLfloat dtime);
		void draw(Camera* camera, Shader* shader);

		inline SimplexNoise& getNoise() { return m_noise; }
		inline PlanetFace* getFace(const unsigned int face) { return m_faces[face]; }
		PlanetIndexBuffer* getIndexBuffer(const unsigned int detailTop, const unsigned int detailRight, const unsigned int detailBottom, const unsigned int detailLeft);

		const glm::mat4 getTransformation();
	private:
		void connectFaces();

		PlanetIndexBuffer* m_ibuffers[5][5][5][5];
		SimplexNoise m_noise;
		glm::vec3 m_position;
		float m_radius;

		glm::vec3 m_lightDir;

		// 6 faces
		PlanetFace* m_faces[6];
};
#endif // __PLANET_H__