#pragma once

#include "types.h"

#include <vector>
#include <ostream>

void calculateVertexNormals(const vec3v_t &positions, uvec3v_t &indices,
		vec3v_t &normals);
void calculateFaceNormals(const vec3v_t &positions, uvec3v_t &indices,
		vec3v_t &normals);
void findEdges(const vec3v_t &positions, const uvec3v_t &indices,
		uvec4v_t &edges);
//void createPatches(const vec3v_t &positions, const uvec3v_t &indices,
//		const uvec4v_t &edges, vec3v_t &oPositions, uvec3v_t &oIndices,
//		uvec4v_t &oEdges, uintv_t &patches, float threshold);

void moveToMean(vec3v_t &positions);

void smooth(vec3v_t &positions, const uvec3v_t &indices);

void saveAttrib(std::ostream &out, const char *prefix, vec3v_t &elements);

void saveAttrib(std::ostream &out, const char *prefix, vec2v_t &elements);

void saveFaces(std::ostream &out, const uvec3v_t &indicess, size_t attributes);

void findAdjacent(const uvec4v_t &edges, size_t nFaces, uvec3v_t &adjacents);

void computeTangentBasis(vec3v_t & vertices, vec2v_t & texcoords,
		vec3v_t & normals, vec3v_t & tangents, vec3v_t & bitangents);
void createPatches(const vec3v_t &positions, const uvec3v_t &indices,
		const vec3v_t &faceNormals, const uvec3v_t &adjacents,
		vec3v_t &oPositions, uvec3v_t &oIndices, uintv_t &patches,
		float threshold);