/*======================================================================



	Animation file data structures 

	Copyright 1997-2003 Epic Games, Inc. All Rights Reserved.



========================================================================*/





// Stub to outline FQuat, which we won't fully define here...

class FQuat

{

public:

	FLOAT X,Y,Z,W;

};



// 

class FVector

{

public:

	FLOAT X,Y,Z;

};





// A bone: an orientation, and a position, all relative to their parent.

struct VJointPos

{

	FQuat   	Orientation;  //

	FVector		Position;     //  



	FLOAT       Length;       //  For collision testing / debugging drawing.  (unused)

	FLOAT       XSize;

	FLOAT       YSize;

	FLOAT       ZSize;

	

};





// Binary animation info format - used to organize raw animation keys into FAnimSeqs on rebuild

// Similar to MotionChunkDigestInfo..

struct AnimInfoBinary

{

	ANSICHAR Name[64];     // Animation's name

	ANSICHAR Group[64];    // Animation's group name	



	INT TotalBones;           // TotalBones * NumRawFrames is number of animation keys to digest.



	INT RootInclude;          // 0 none 1 included 	(unused)

	INT KeyCompressionStyle;  // Reserved: variants in tradeoffs for compression.

	INT KeyQuotum;            // Max key quotum for compression	

	FLOAT KeyReduction;       // desired 

	FLOAT TrackTime;          // explicit - can be overridden by the animation rate

	FLOAT AnimRate;           // frames per second.

	INT StartBone;            // - Reserved: for partial animations (unused)

	INT FirstRawFrame;        //

	INT NumRawFrames;         // NumRawFrames and AnimRate dictate tracktime...

};





// File header structure. 

struct VChunkHeader

{

	ANSICHAR    ChunkID[20];  // String ID of up to 19 chars (usually zero-terminated)

	INT			TypeFlag;     // Flags/reserved

   	INT         DataSize;     // Size per struct following;

	INT         DataCount;    // Number of structs/

};



// Raw data material.

struct VMaterial

{

	ANSICHAR    MaterialName[64];

	INT			TextureIndex;  // Texture index ('multiskin index')

	DWORD		PolyFlags;     // ALL poly's with THIS material will have this flag.

	INT	        AuxMaterial;   // Reserved: index into another material, eg. detailtexture/shininess/whatever.

	DWORD		AuxFlags;      // Reserved: auxiliary flags 

	INT			LodBias;       // Material-specific lod bias (unused)

	INT			LodStyle;      // Material-specific lod style (unused)

};





// Raw data bone.

struct VBone

{

	ANSICHAR    Name[64];     //

	DWORD	    Flags;        // Reserved.

	INT 	    NumChildren;  // Children  (not used.)

	INT         ParentIndex;  // 0/NULL if this is the root bone.  

	VJointPos   BonePos;      // Reference position.

};





// Binary bone format to deal with raw animations as generated by various exporters.

struct FNamedBoneBinary

{

	ANSICHAR   Name[64];	// Bone's name

	DWORD      Flags;		// reserved

	INT        NumChildren; //

	INT		   ParentIndex;	// 0/NULL if this is the root bone.  

	VJointPos  BonePos;	    //

};



// Raw data bone influence.

struct VRawBoneInfluence // Just weight, vertex, and Bone, sorted later.

{

	FLOAT Weight;

	INT   PointIndex;

	INT   BoneIndex;

};



// An animation key.

struct VQuatAnimKey

{

	FVector		Position;           // Relative to parent.

	FQuat       Orientation;        // Relative to parent.

	FLOAT       Time;				// The duration until the next key (end key wraps to first...)

};



// Vertex with texturing info, akin to Hoppe's 'Wedge' concept - import only.

struct VVertex

{

	_WORD	PointIndex;	 // Index into the 3d point table.

	FLOAT   U,V;         // Texture U, V coordinates.

	BYTE    MatIndex;    // At runtime, this one will be implied by the face that's pointing to us.

	BYTE    Reserved;    // Top secret.

};



// Points: regular FVectors 

struct VPoint

{	

	FVector			Point; 

};



// Textured triangle.

struct VTriangle

{

	_WORD   WedgeIndex[3];	 // Point to three vertices in the vertex list.

	BYTE    MatIndex;	     // Materials can be anything.

	BYTE    AuxMatIndex;     // Second material (unused).

	DWORD   SmoothingGroups; // 32-bit flag for smoothing groups.

};