/*****************************************************************************
*   "Irit" - the 3d (not only polygonal) solid modeller.		     *
*									     *
* Written by:  Gershon Elber				Ver 0.2, Mar. 1990   *
******************************************************************************
*   Module to provide the required interfact for the cagd library for the    *
* free form surfaces and curves.					     *
*****************************************************************************/

#ifndef FREEFORM_H
#define FREEFORM_H

int GetDrawCtlPt(void);
int GetFourPerFlat(void);
IPObjectStruct *GenBezierSurfaceObject(IPObjectStruct *LstObjList);
IPObjectStruct *GenBezierCurveObject(IPObjectStruct *PtObjList);
IPObjectStruct *GenBsplineSurfaceObject(RealType *UOrder, RealType *VOrder,
		      IPObjectStruct *LstObjList, IPObjectStruct *KntObjList);
IPObjectStruct *GenBsplineCurveObject(RealType *ROrder,
			IPObjectStruct *PtObjList, IPObjectStruct *KntObjList);
IPObjectStruct *DivideSurfaceObject(IPObjectStruct *SrfObj, RealType *Dir,
							RealType *ParamVal);
IPObjectStruct *RegionFromSurfaceObject(IPObjectStruct *SrfObj, RealType *RDir,
				     RealType *ParamVal1, RealType *ParamVal2);
IPObjectStruct *DivideCurveObject(IPObjectStruct *CrvObj, RealType *ParamVal);
IPObjectStruct *RegionFromCurveObject(IPObjectStruct *CrvObj,
				    RealType *ParamVal1, RealType *ParamVal2);
IPObjectStruct *RefineSurfaceObject(IPObjectStruct *SrfObj, RealType *Dir,
				  RealType *Replace, IPObjectStruct *KnotsObj);
IPObjectStruct *RefineCurveObject(IPObjectStruct *CrvObj, RealType *Replace,
						       IPObjectStruct *KnotsObj);
IPObjectStruct *EvalSurfaceObject(IPObjectStruct *SrfObj, RealType *u, RealType *v);
IPObjectStruct *EvalCurveObject(IPObjectStruct *CrvObj, RealType *t);
IPObjectStruct *DeriveSurfaceObject(IPObjectStruct *SrfObj, RealType *Dir);
IPObjectStruct *DeriveCurveObject(IPObjectStruct *CrvObj);
IPObjectStruct *SurfaceNormalObject(IPObjectStruct *SrfObj);
IPObjectStruct *NormalSurfaceObject(IPObjectStruct *SrfObj, RealType *u,
								  RealType *v);
IPObjectStruct *TangentSurfaceObject(IPObjectStruct *SrfObj, RealType *Dir,
						     RealType *u, RealType *v);
IPObjectStruct *TangentCurveObject(IPObjectStruct *CrvObj, RealType *t);
IPObjectStruct *CurveFromSrfMesh(IPObjectStruct *SrfObj, RealType *Dir,
							 RealType *Index);
IPObjectStruct *CurveFromSurface(IPObjectStruct *SrfObj, RealType *Dir,
							   RealType *ParamVal);
IPObjectStruct *CurveReverse(IPObjectStruct *CrvObj);
IPObjectStruct *SurfaceReverse(IPObjectStruct *SrfObj);
void ComputeCurveIsoLines(IPObjectStruct *PObj);
void ComputeSurfaceIsoLines(IPObjectStruct *PObj);
void ComputeSurfacePolygons(IPObjectStruct *PObj);
IPObjectStruct *Geometry2Polygons(IPObjectStruct *Obj);
IPObjectStruct *Geometry2Polylines(IPObjectStruct *Obj);
IPObjectStruct *GenCircleCurveObject(VectorType Position, RealType *Radius);
IPObjectStruct *GenArcCurveObject(VectorType Start, VectorType Center,
							VectorType End);
IPObjectStruct *GenRuledSrfObject(IPObjectStruct *Crv1, IPObjectStruct *Crv2);
IPObjectStruct *GenBoolSumSrfObject(IPObjectStruct *Crv1, IPObjectStruct *Crv2,
				  IPObjectStruct *Crv3, IPObjectStruct *Crv4);
IPObjectStruct *GenBoolOneSrfObject(IPObjectStruct *BndryCrv);
IPObjectStruct *GenSrfFromCrvsObject(IPObjectStruct *CrvList,
				     RealType *OtherOrder);
IPObjectStruct *GenSweepSrfObject(IPObjectStruct *CrossSection,
				  IPObjectStruct *Axis, IPObjectStruct *Scale,
				  IPObjectStruct *Frame);
IPObjectStruct *GenOffsetObject(IPObjectStruct *Obj, RealType *Offset);
IPObjectStruct *GenAOffsetObject(IPObjectStruct *Obj, RealType *Offset,
					    RealType *Epsilon, RealType *Trim);
IPObjectStruct *MergeSrfSrf(IPObjectStruct *Srf1, IPObjectStruct *Srf2,
					    RealType *Dir, RealType *SameEdge);
IPObjectStruct *MergeCurvesAndCtlPoints(IPObjectStruct *PObj1,
					IPObjectStruct *PObj2);
IPObjectStruct *EditCrvControlPoint(IPObjectStruct *PObjCrv,
				    CagdCtlPtStruct *Pt, RealType *Index);
IPObjectStruct *EditSrfControlPoint(IPObjectStruct *PObjSrf,
				    CagdCtlPtStruct *Pt,
					RealType *UIndex, RealType *VIndex);
IPObjectStruct *RaiseCurveObject(IPObjectStruct *PObjCrv, RealType *Order);
IPObjectStruct *RaiseSurfaceObject(IPObjectStruct *PObjSrf, RealType *RDir,
							  RealType *RNewOrder);
void MakeFreeFormCompatible(IPObjectStruct *PObj1, IPObjectStruct *PObj2);
IPObjectStruct *TwoSrfsMorphing(IPObjectStruct *PObjSrf1,
				IPObjectStruct *PObjSrf2, RealType *Blend);
IPObjectStruct *CnvrtBezierToBspline(IPObjectStruct *PObj);
IPObjectStruct *CnvrtBsplineToBezier(IPObjectStruct *PObj);
IPObjectStruct *TwoCrvsSrfsProduct(IPObjectStruct *PObj1, IPObjectStruct *PObj2);
IPObjectStruct *TwoCrvsSrfsDotProduct(IPObjectStruct *PObj1,
				      IPObjectStruct *PObj2);
IPObjectStruct *TwoCrvsSrfsCrossProduct(IPObjectStruct *PObj1,
					IPObjectStruct *PObj2);
IPObjectStruct *TwoCrvsSrfsSum(IPObjectStruct *PObj1, IPObjectStruct *PObj2);
IPObjectStruct *TwoCrvsSrfsDiff(IPObjectStruct *PObj1, IPObjectStruct *PObj2);
IPObjectStruct *CrvCurvaturePts(IPObjectStruct *PObj, RealType *Eps);
IPObjectStruct *CrvInflectionPts(IPObjectStruct *PObj, RealType *Eps);
IPObjectStruct *CrvZeros(IPObjectStruct *PObj, RealType *Eps, RealType *Axis);
IPObjectStruct *CrvExtremes(IPObjectStruct *PObj, RealType *Eps,
							    RealType *Axis);
IPObjectStruct *CrvCrvInter(IPObjectStruct *PObj1, IPObjectStruct *PObj2,
			    RealType *Eps, RealType *SelfInter);
IPObjectStruct *CrvPointDist(IPObjectStruct *PCrv, PointType Point,
					    RealType *MinDist, RealType *Eps);
IPObjectStruct *CrvLineDist(IPObjectStruct *PCrv, PointType Point,
			    VectorType Vec, RealType *MinDist, RealType *Eps);
IPObjectStruct *CrvComposition(IPObjectStruct *PObj1, IPObjectStruct *PObj2);
IPObjectStruct *SrfsPrisa(IPObjectStruct *Srfs, CagdRType *SamplesPerCurve,
			CagdRType *Epsilon, CagdRType *Dir, CagdVType Space);
IPObjectStruct *SrfAdapIsoCurves(IPObjectStruct *Srf, CagdRType *Dir,
		 CagdRType *Eps, CagdRType *FullIso, CagdRType *SinglePath);
IPObjectStruct *GetCrvSrfPDomain(IPObjectStruct *SrfOrCrv);

#endif /* FREEFORM_H */