#pragma once

#include <cstdint>
#include <string>
#include <vector>
#include <glm/vec3.hpp>
#include <unordered_map>
#include <unordered_set>
#include "constraints.hpp"

using std::unordered_map;
using std::unordered_set;
using std::vector;

struct Vertex;

typedef unordered_map<const Constraint*, vector<const Constraint *>> Graph;

class Mesh;

class SoftBody {
public:
	explicit SoftBody(Mesh* mesh, float edgeCompliance, float triangleCompliance=0, float tetrahedronCompliance=0);
	uint32_t firstIndex = 0;
	int32_t vertexOffset = 0;

	vector<Vertex> vertices;
	vector<Face> faces;
	ConstraintData constraintData;

	void applyVertexWorldOffset(const glm::vec3& offset);

	SoftBody& operator =(const SoftBody& other) = delete;
private:
	void splitConstraints();
	void reorderConstraintIndices(const vector<unordered_set<const Constraint *>> &partitions);
};