/**********************************************************************
 *<
	FILE: linshape.h

	DESCRIPTION:  Defines a Linear Shape Object Class

	CREATED BY: Tom Hudson

	HISTORY: created 31 October 1995

 *>	Copyright (c) 1995, All Rights Reserved.
 **********************************************************************/

#ifndef __LINSHAPE_H__ 

#define __LINSHAPE_H__

#include "polyshp.h"
extern CoreExport Class_ID  linearShapeClassID; 

class LinearShape : public ShapeObject {			   
	private:
		Interval geomValid;
		Interval topoValid;
		Interval selectValid;
		DWORD validBits; // for the remaining constant channels
		void CopyValidity(LinearShape *fromOb, ChannelMask channels);

	protected:
		//  inherited virtual methods for Reference-management
		RefResult NotifyRefChanged(Interval changeInt, RefTargetHandle hTarget, PartID& partID, RefMessage message );

	public:
		PolyShape		shape;

		CoreExport LinearShape();
		CoreExport ~LinearShape();

 		//  inherited virtual methods:

		// From BaseObject
		CoreExport int HitTest(TimeValue t, INode* inode, int type, int crossing, int flags, IPoint2 *p, ViewExp *vpt);
		CoreExport void Snap(TimeValue t, INode* inode, SnapInfo *snap, IPoint2 *p, ViewExp *vpt);
		CoreExport int Display(TimeValue t, INode* inode, ViewExp *vpt, int flags);
		CoreExport CreateMouseCallBack* GetCreateMouseCallBack();
		CoreExport RefTargetHandle Clone(RemapDir& remap = NoRemap());
		
		// From Object			 
		CoreExport ObjectState Eval(TimeValue time);
		CoreExport Interval ObjectValidity(TimeValue t);

		// The validity interval of channels necessary to do a convert to type
		CoreExport Interval ConvertValidity(TimeValue t);

		// get and set the validity interval for the nth channel
	   	CoreExport Interval ChannelValidity(TimeValue t, int nchan);
		CoreExport void SetChannelValidity(int i, Interval v);
		CoreExport void InvalidateChannels(ChannelMask channels);

		// Deformable object procs	
		int IsDeformable() { return 1; }  
		CoreExport int NumPoints();
		CoreExport Point3 GetPoint(int i);
		CoreExport void SetPoint(int i, const Point3& p);
		CoreExport BOOL IsPointSelected (int i);
		
		CoreExport void PointsWereChanged();
		CoreExport void GetDeformBBox(TimeValue t, Box3& box, Matrix3 *tm=NULL,BOOL useSel=FALSE );
		CoreExport void Deform(Deformer *defProc, int useSel);

		CoreExport int CanConvertToType(Class_ID obtype);
		CoreExport Object* ConvertToType(TimeValue t, Class_ID obtype);
		CoreExport void FreeChannels(ChannelMask chan);
		CoreExport Object *MakeShallowCopy(ChannelMask channels);
		CoreExport void ShallowCopy(Object* fromOb, ChannelMask channels);
		CoreExport void NewAndCopyChannels(ChannelMask channels);

		CoreExport DWORD GetSubselState();

		// From ShapeObject
		CoreExport ObjectHandle CreateTriObjRep(TimeValue t);  // for rendering, also for deformation		
		CoreExport void GetWorldBoundBox(TimeValue t, INode *inode, ViewExp* vpt, Box3& box );
		CoreExport void GetLocalBoundBox(TimeValue t, INode *inode, ViewExp* vpt, Box3& box );
		CoreExport int NumberOfVertices(TimeValue t, int curve);
		CoreExport int NumberOfCurves();
		CoreExport BOOL CurveClosed(TimeValue t, int curve);
		CoreExport Point3 InterpCurve3D(TimeValue t, int curve, float param, int ptype=PARAM_SIMPLE);
		CoreExport Point3 TangentCurve3D(TimeValue t, int curve, float param, int ptype=PARAM_SIMPLE);
		CoreExport float LengthOfCurve(TimeValue t, int curve);
		CoreExport int NumberOfPieces(TimeValue t, int curve);
		CoreExport Point3 InterpPiece3D(TimeValue t, int curve, int piece, float param, int ptype=PARAM_SIMPLE);
		CoreExport Point3 TangentPiece3D(TimeValue t, int curve, int piece, float param, int ptype=PARAM_SIMPLE);
		CoreExport MtlID GetMatID(TimeValue t, int curve, int piece);
		BOOL CanMakeBezier() { return TRUE; }
		CoreExport void MakeBezier(TimeValue t, BezierShape &shape);
		CoreExport ShapeHierarchy &OrganizeCurves(TimeValue t, ShapeHierarchy *hier = NULL);
		CoreExport void MakePolyShape(TimeValue t, PolyShape &shape, int steps = PSHAPE_BUILTIN_STEPS, BOOL optimize = FALSE);
		CoreExport int MakeCap(TimeValue t, MeshCapInfo &capInfo, int capType);
		CoreExport int MakeCap(TimeValue t, PatchCapInfo &capInfo);

		PolyShape& GetShape() { return shape; }

		// This does the job of setting all points in the PolyShape to "POLYPT_KNOT"
		// types, and removing the "POLYPT_INTERPOLATED" flag.  This is because the
		// LinearShape knows nothing about its origin
		CoreExport void SetPointFlags();

		// Animatable methods

		void DeleteThis() { delete this; }
		void FreeCaches() { shape.InvalidateGeomCache(FALSE); }
		Class_ID ClassID() { return linearShapeClassID; }
		CoreExport void GetClassName(TSTR& s);
		void NotifyMe(Animatable *subAnim, int message) {}
		int IsKeyable() { return 0;}
		int Update(TimeValue t) { return 0; }
		BOOL BypassTreeView() { return TRUE; }
		// This is the name that will appear in the history browser.
		CoreExport TCHAR *GetObjectName();

		// IO
		CoreExport IOResult Save(ISave *isave);
		CoreExport IOResult Load(ILoad *iload);

#ifdef DESIGN_VER // should be added to MAX after R3 ships
		// RefMaker methods
		CoreExport void RescaleWorldUnits(float f);
#endif //DESIGN_VER

	};				

CoreExport ClassDesc* GetLinearShapeDescriptor();

#endif // __LINSHAPE_H__