brfMesh.h

/* OpenBRF -- by marco tarini. Provided under GNU General Public License */

#ifndef BRF_MESH
#define BRF_MESH
// a BRF mesh....

#include "brfToken.h"

namespace vcg {
template <class T> class Matrix44;
}

class CarryPosition;
class BrfSkeleton;
class BrfAnimation;
class BrfBodyPart;

class BrfVert{
public:
	BrfVert();
	int index;
	unsigned int col;
	Point3f __norm; // use normal inside frame instead
	Point3f tang; // tangent dir...
	unsigned char tangi; // 0: frame TBN right-handed  1: left-handed
	Point2f ta,tb; // texture

	BrfVert operator + (const int i) const {BrfVert res = *this; res.index += i; return res;}
	bool Load(FILE*f);
	void Save(FILE*f) const;

	static unsigned int SizeOnDisk();
};



class BrfFace{
public:
	int index[3];

	BrfFace(){}
	BrfFace(int i, int j, int k) {index[0]=i; index[1]=j; index[2]=k; }
	BrfFace operator + (const int i) const {BrfFace res = *this;
											res.index[0] += i; res.index[1] += i; res.index[2] += i; return res;}

	void Flip() { int tmp=index[1]; index[1]=index[2]; index[2]=tmp;}
	bool Load(FILE*f);
	void Save(FILE*f) const;

	static unsigned int SizeOnDisk();

};

class BrfSkinning{
public:
	BrfSkinning();
	// skinning
	int boneIndex[4];
	float boneWeight[4];
	void SetColorGl() const;
	bool operator < (const BrfSkinning &b) const;
	bool operator == (const BrfSkinning &b) const;
	int FirstEmpty() const;
	int LeastIndex() const; // index with the smallest weight
	float WeightOf(int i) const;
	void Normalize();
	void Add(int index, float w);
	bool MaybeAdd(int index, float w);
	bool MaybeAdd(BrfSkinning &b);
	void Stiffen(float howmuch);
};

class BrfFrame{
public:
	int time;
	vector<Point3f> pos;  // size = pos.size()  !!!
	vector<Point3f> norm; // size = vert.size()  !!!

	bool Load(FILE*f);
	void Save(FILE*f) const;
	static bool Skip(FILE*f);

	BrfFrame Blend(const BrfFrame& b, float t) const ;
	BrfFrame Blend(const BrfFrame& b, float t, const vector<bool> &sel) const;

	Point3f MinPos();
	Point3f MaxPos();
	void Apply(Matrix44<float> m);

	int FindClosestPoint(Point3f to, float* maxdist)const;

	void MakeSlim(float ratioX, float ratioZ, const BrfSkeleton* s);
};

class BrfMesh;

// used to morph a skinned mesh frame, e.g. feminine armour from masculine
class MeshMorpher{
public:
	enum{MAX_BONES = 40, POSZ_BONES = 20};
	void LearnFrom(BrfMesh& a, int framei, int framej); // learn from an example
	void ResetLearning();
	void FinishLearning();
	bool Save(const char* filename) const;
	bool Load(const char* text);
	void Emphatize(float k);
	Point3f s[MAX_BONES], t[MAX_BONES];
	float extraBreast;
private:
	// quadric coefficients
	Point3f css[MAX_BONES],ctt[MAX_BONES],cst[MAX_BONES],cs[MAX_BONES],ct[MAX_BONES],cc[MAX_BONES];
	// breast multiplier
};

class BrfMesh{
private:


public:

	void Apply(Matrix44<float> m);
	bool Apply( const CarryPosition& cp , const BrfSkeleton &s, float weapLen, bool atOrigin);
	static bool LoadCarryPosition(CarryPosition& cp, const char* line);

	int GetFirstSelected(int after=-1) const;

	// adds a rope from avg selected pos to To.AvgSelPos
	void AddRope(const BrfMesh &to, int nseg, float width);

	vector<BrfSkinning> skinning; // one per pos

	void DiminishAni(float t);
	void DiminishAniSelected(float t);

	bool UniformizeWith(const BrfMesh& target); // crates/removes vertex ani, tangent space, etc to uniformize with target mesh

	void Unskeletonize(const BrfSkeleton& from);
	void Reskeletonize(const BrfSkeleton& from, const BrfSkeleton& to);
	void ReskeletonizeHuman(const BrfSkeleton& from, const BrfSkeleton& to, float bonusArm = 0);
	void TransferRigging(const std::vector<BrfMesh>& from, int nf, int nfb);
	void ShrinkAroundBones(const BrfSkeleton& s, int nframe);
	void NormalizeRigging();
	void DiscardRigging();
	void DiscardTangentField();

	int IsNamedAsLOD() const; // does it follow the M&B convention for LOD meshes?
	bool IsNamedAsBody(const char* bodyName) const; // is it the M&B conventional rule for Collision body? ("bo_"+name)

	bool CopyModification(const BrfMesh& mod);
	bool CopyTextcoords(const BrfMesh& b);
	bool CopyVertColors(const BrfMesh& b, bool overwrite=true);
	bool CopyVertAni(const BrfMesh& b);
	void SetDefault();
	void MakeSingleQuad(float x, float y, float dx, float dy);
	void AddToBody(BrfBodyPart &dest);

	void SmoothRigging();
	void StiffenRigging(float howmuch);
	void TuneColors(int contast, int hue, int sat, int brigh);
	void MorphFrame(int framei, int framej, const MeshMorpher& m);
	void AddALittleOfBreast(int framei, float howMuch);

	unsigned int GetAverageColor() const;

	void FreezeFrame(const BrfSkeleton& s, const BrfAnimation& a, int frameInput, int frameOutput=0);
	bool SkinnedToVertexAni(const BrfSkeleton& s, const BrfAnimation& a);
	void Unmount(const BrfSkeleton& s);
	void MountOnBone(const BrfSkeleton& s, int boneIndex);

	const char* GetLikelyCollisonBodyName() const;

	void ResizeTextCoords(Point2f min, Point2f max );
	void paintAlphaAsZ(float min, float max);

	int DivideIntoSeparateChunks(std::vector<int> &map);
	void FixRigidObjectsInRigging();
	void SubdivideIntoConnectedComponents(std::vector<BrfMesh> &res);


	BrfMesh(){}
	BrfMesh(FILE *f){ Load(f);}
	unsigned int flags;

	char name[255];
	char material[255];
	static int tokenIndex(){return MESH;}

	void KeepOnlyFrame(int i);

	vector<bool> selected;

	vector<BrfFrame> frame;

	vector<BrfVert> vert;

	vector<BrfFace> face;

	Box3f bbox;
	int maxBone; // if skinned, what is the max bone index

	bool SaveSMD(FILE *f) const;
	bool LoadSMD(FILE *f) const;

	bool SaveOBJ(char* f, int frame) const;
	bool LoadOBJ(char* f);
	bool SaveVertexAniAsOBJ(char* f) const;

	/* data extracted from name... */
	char baseName[255];
	int lodLevel;
	int pieceIndex;
	void AnalyzeName();

	bool IsSkinned() const; // for convenience
	void UpdateBBox();
	void SetUniformRig(int nbone);
	void SplitFaces(const std::vector<int> &matIndex);
	bool RemoveUnreferenced();
	void ColorAll(unsigned int newcol);
	void MultColorAll(unsigned int newcol);

	void AdjustNormDuplicates(); // copys normals
	// sanity check
	bool CheckAssert() const;

	bool Load(FILE*f);
	void Save(FILE*f) const;
	bool Skip(FILE* f);

	bool SaveAsPly(int nframe=0, const char* path="") const;

	void Flip();
	void Bend(int frame, float range); // bends as if on a cylinder

	bool IsAnimable() const;
	void ComputeNormals();
	void ComputeTangents();
	void ComputeTangentsMaybeSplit();
	void ZeroTangents();
	void ComputeNormals(int framei);

	void ComputeAndStoreTangents();

	bool UnifyPos();
	bool UnifyVert(bool careForNormals, float crease=0);
	void DivideVert();
	void RemoveSeamsFromNormals(double crease);
	void AfterLoad();
	bool hasVertexColor;
	bool StoresTangentField() const; // on disk
	bool HasTangentField() const; // for previewing
	bool HasVertexAni() const;
	bool reverseVertexAni();

	bool Merge(const BrfMesh &brf);
	bool AddAllFrames(const BrfMesh &brf);
	bool AddFrameDirect(const BrfMesh &brf);
	bool AddFrameMatchVert(const BrfMesh &brf, int k);
	bool AddFrameMatchTc(const BrfMesh &brf, int k);
	bool AddFrameMatchPosOrDie(const BrfMesh &brf, int k);
	void EnsureTwoFrames();

	void Scale(float f);
	void Scale(float xNeg, float xPos, float yPos, float yNeg, float zPos, float zNeg);
	void TowardZero(float x,float y, float z);
	void TransformUv(float su, float sv, float tu, float tv);

	void Transform(float * m, int frameN = -1);
	void Translate(Point3f p);

	void RemoveBackfacingFaces();
	void AddBackfacingFaces();

	void GetTimings(std::vector<int> &v);
	void SetTimings(const std::vector<int> &v);

	static unsigned int multCol( unsigned int col, float a);
	static unsigned int multCol( unsigned int col, unsigned int colb);

	void SetName(const char* st);
private:
	void CopyTimesFrom(const BrfMesh &brf);
	void Blend(const BrfMesh &brf);
	void MergeMirror(const BrfMesh &brf);
	void UpdateMaxBone();

	void CollapseBetweenFrames(int fi, int fj);
	void DuplicateFrames(const BrfMesh &brf);
	void DuplicateFrames(int i);
	void CopySelectedFrom(const BrfMesh &brf);
	void FollowSelected(const BrfMesh &brf, int baseframe=0);
	void FollowSelectedSmart(const BrfMesh &brf, int baseframe=0);

	void KeepSelctedFixed(int asInFrame, float howmuch);
	void CopyTextcoord(const BrfMesh &origbrf, const BrfMesh &newbrf, int nframe=0);
	void CopyPos(int x, const BrfMesh &origbrf, const BrfMesh &newbrf);

	void PropagateDeformations(int nframe, const BrfMesh &brf);

	void SelectRed(const BrfMesh &brf);
	void SelectRand();


	float GetTopPos(int frame, int axis=1) const;

	//void Scale(float f);
	void TranslateSelected(Point3f p);
	void CycleFrame(int i);

	void Hasten(float timemult);
	void FixTextcoord(const BrfMesh &newbrf, BrfMesh &refbrf, int nframe=0);
	void FixPosOrder(const BrfMesh &refbrf);
	void InvertPosOrder();

	Point3f GetASelectedPos(int frame=0) const;
	Point3f GetAvgSelectedPos(int framei) const;

	void FindRefPoints();
	vector<int> refpoint;

	void FindSymmetry(vector<int> &output);
	void ApplySymmetry(const vector<int> &output);

	void SelectAbsent(const BrfMesh& ref, int nframe=0);
	void DeleteSelected();
	void ClearSelection();
	void CopySelection(const BrfMesh& ref);

	void AdaptToRes(const BrfMesh& ref);



	//BrfMesh& operator = (const BrfMesh &brf);

	static void AlignToTop(BrfMesh& a, BrfMesh& b);
	BrfMesh SingleFrame(int i) const; // returns a BrfMesh consisting only of frame i
	static bool FindVertVertMapping(std::vector<int> &map, const BrfMesh& a, const BrfMesh& b, int ai, int bi, float uv, float xyz);



};

#endif