[研讨] AcDbCurve转换AcGeCurve中的样条化3dpoly

admin · 发表于 2024-2-23 22:53:07

在 AutoCAD 2014 SDK 中 AcDbCurve 提供了 getAcGeCurve() 方法，同时 AcDbCurve::createFromAcGeCurve(), 经测试在 AcDbCurve 是 3dpoly 经过 Pedit S 后，如果使用前者再使用后者添加到数据库后可以生成真正的 Spline，而对 LWPOLYLINE 经过 S 后，生成的曲线和原曲线一致

对 3dpoly 样条化后在 AcDb 时表现为折线模拟，getAcGeCurve（）获取的反而是真正的 Spline ，这和 AcDb表现不一致，应该是一个Bug

static void asdkMyGroupCTest(void)
{
ads采用name ent;
ads采用point pt;
if(RTNORM != acedEntSel(NULL,ent,pt))
{
return;
}
AcDbObjectId id;
acdbGetObjectId(id,ent);
AcDbEntityPointer pEnt(id,AcDb::kForRead);
if (pEnt.openStatus()!=Acad::eOk||!pEnt->isKindOf(AcDbCurve::desc()))
{
return;
}
AcDbCurve *pCurve=NULL;
pCurve=AcDbCurve::cast(pEnt);
if(pCurve==NULL)
{
return;
}
AcGeCurve3d *pGe=NULL;
Acad::ErrorStatus es=pCurve->getAcGeCurve(pGe);
pCurve->closes();
if (es!=Acad::eOk)
{
return;
}
AcDbBlockTableRecordPointer btr(curDoc()->database()->currentSpaceId(),AcDb::kForWrite);
if (btr.openStatus()!=Acad::eOk)
{
delete pGe;
return;
}
AcDbCurve *pDbCv=NULL;
es=AcDbCurve::createFromAcGeCurve(*pGe,pDbCv);
delete pGe;
if (es!=Acad::eOk)
{
return;
}
btr->appendAcDbEntity(pDbCv);
pDbCv->close();
}

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admin · 发表于 2024-2-23 22:53:21

// POLYLINE3D ?fit 后是折线模拟
Acad::ErrorStatus Conversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDb3dPolyline * pPoly3d)
{
AcGePoint3dArray pts;
AcGePoint3d pt1;
AcDbObjectId id;
AcDbVertex *p3dVertex=NULL;
Acad::ErrorStatus es;
AcDb3dPolylineVertex *pPoly3dVertex=NULL;
AcDbObjectIterator* vertexIterator = pPoly3d->vertexIterator();
for (vertexIterator->start();!vertexIterator==vertexIterator->done();vertexIterator->step())
{
id=vertexIterator->objectId();
es=acdbOpenObject(p3dVertex,id,AcDb::kForRead);
if (es==Acad::eOk)
{
pPoly3dVertex=AcDb3dPolylineVertex::cast(p3dVertex);
if (pPoly3dVertex->vertexType()!=AcDb::k3dControlVertex)
{
pts.append(pPoly3dVertex->position());
}
}
if (p3dVertex!=NULL)
{
p3dVertex->close();
}
if (pPoly3dVertex!=NULL)
{
pPoly3dVertex->close();
}
}
delete vertexIterator;
if (pPoly3d->isClosed())
{
pPoly3d->getStartPoint(pt1);
pts.append(pt1);
}
pGe=new AcGePolyline3d(pts);
return Acad::eOk;
}

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admin · 发表于 2024-2-23 22:53:36

#pragma once
class CConversion
{
public:
CConversion(void);
virtual ~CConversion(void);
static Acad::ErrorStatus AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeCurve3d * pGe);
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbEntity *pEnt);
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbCurve *pDbCurve);
private:
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDb2dPolyline *pPoly2d);
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDb3dPolyline * pPoly3d);
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbPolyline * pPoly);
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbSpline * pSpline);
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbEllipse * pDb);
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbCircle * pDbCircle);
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbArc * pDbArc);
static Acad::ErrorStatus AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbLine * pLine);
static Acad::ErrorStatus AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGePolyline3d *pGe);
static Acad::ErrorStatus AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeCompositeCurve3d * pGe);
static Acad::ErrorStatus AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeNurbCurve3d * pGe);
static Acad::ErrorStatus AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeEllipArc3d * pGe);
static Acad::ErrorStatus AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeCircArc3d * pGe);
static Acad::ErrorStatus AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeLineSeg3d * pGe);
};

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admin · 发表于 2024-2-23 22:54:01

#include "stdafx.h"
#include "CConversion.h"
CConversion::CConversion(void)
{
}
CConversion::~CConversion(void)
{
}
//////////////////////////////////////////////////////////////////////////
// catch all for all other entity types.
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbCurve *pDbCurve)
{
if (pDbCurve->isKindOf(AcDbLine::desc()))
{
return AcDbCurveToAcGeCurve(pGe,(AcDbLine *)pDbCurve);
}
if (pDbCurve->isKindOf(AcDbArc::desc()))
{
return AcDbCurveToAcGeCurve(pGe,(AcDbArc *)pDbCurve);
}
if (pDbCurve->isKindOf(AcDbCircle::desc()))
{
return AcDbCurveToAcGeCurve(pGe,(AcDbCircle *)pDbCurve);
}
if (pDbCurve->isKindOf(AcDbEllipse::desc()))
{
return AcDbCurveToAcGeCurve(pGe,(AcDbEllipse *)pDbCurve);
}
if (pDbCurve->isKindOf(AcDbSpline::desc()))
{
return AcDbCurveToAcGeCurve(pGe,(AcDbSpline *)pDbCurve);
}
if (pDbCurve->isKindOf(AcDbPolyline::desc()))
{
return AcDbCurveToAcGeCurve(pGe,(AcDbPolyline *)pDbCurve);
}
if (pDbCurve->isKindOf(AcDb3dPolyline::desc()))
{
return AcDbCurveToAcGeCurve(pGe,(AcDb3dPolyline *)pDbCurve);
}
if (pDbCurve->isKindOf(AcDb2dPolyline::desc()))
{
return AcDbCurveToAcGeCurve(pGe,(AcDb2dPolyline *)pDbCurve);
}
return Acad::eNotImplementedYet;
}
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbEntity *pEnt)
{
if (pEnt->isKindOf(AcDbCurve::desc()))
{
return AcDbCurveToAcGeCurve(pGe,(AcDbCurve *)pEnt);
}
return Acad::eNotImplementedYet;
}
Acad::ErrorStatus CConversion::AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeCurve3d * pGe)
{
AcGe::EntityId type = pGe->type();
switch (type)
{
case AcGe::kLineSeg3d:
return AcGeCurveToAcDbCurve(pDb,(AcGeLineSeg3d *) pGe);
case AcGe::kCircArc3d:
return AcGeCurveToAcDbCurve(pDb,(AcGeCircArc3d *) pGe);
case AcGe::kEllipArc3d:
return AcGeCurveToAcDbCurve(pDb,(AcGeEllipArc3d *) pGe);
case AcGe::kNurbCurve3d:
return AcGeCurveToAcDbCurve(pDb,(AcGeNurbCurve3d *) pGe);
case AcGe::kCompositeCrv3d:
return AcGeCurveToAcDbCurve(pDb,(AcGeCompositeCurve3d*) pGe);
case AcGe::kPolyline3d:
return AcGeCurveToAcDbCurve(pDb,(AcGePolyline3d *) pGe);
default:
return Acad::eNotImplementedYet;
}
}
//////////////////////////////////////////////////////////////////////////
//#include "Conversion.h"
// LINE
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbLine * pLine)
{
pGe = new AcGeLineSeg3d(pLine->startPoint(), pLine->endPoint());
return Acad::eOk;
}
Acad::ErrorStatus CConversion::AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeLineSeg3d * pGe)
{
pDb= new AcDbLine(pGe->startPoint(),pGe->endPoint());
return Acad::eOk;
}
// ARC
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbArc * pDbArc)
{
pGe = new AcGeCircArc3d(
pDbArc->center(),
pDbArc->normal(),
pDbArc->normal().perpVector(),
pDbArc->radius(),
pDbArc->startAngle(),
pDbArc->endAngle());
return Acad::eOk;
}
Acad::ErrorStatus CConversion::AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeCircArc3d * pGe)
{
if (pGe->isClosed())
{
pDb = new AcDbCircle(pGe->center(),pGe->normal(),pGe->radius());
}
else
{
pDb = new AcDbArc(pGe->center(),pGe->normal(),pGe->radius(),pGe->startAng(),pGe->endAng());
}
return Acad::eOk;
}
// CIRCLE
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbCircle * pDbCircle)
{
pGe = new AcGeCircArc3d(pDbCircle->center(),pDbCircle->normal(),pDbCircle->radius());
return Acad::eOk;
}
// ELLIPSE
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbEllipse * pDb)
{
pGe = new AcGeEllipArc3d(
pDb->center(),
pDb->majorAxis(),
pDb->minorAxis(),
pDb->majorAxis().length(),
pDb->minorAxis().length(),
pDb->startAngle(),
pDb->endAngle());
return Acad::eOk;
}
Acad::ErrorStatus CConversion::AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeEllipArc3d * pGe)
{
pDb = new AcDbEllipse(
pGe->center(),
pGe->normal(),
pGe->majorAxis()*pGe->majorRadius(),
pGe->minorRadius()/pGe->majorRadius(),
pGe->startAng(),
pGe->endAng());
return Acad::eOk;
}
// SPLINE
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbSpline * pSpline/*bool isFit*/)
{
Acad::ErrorStatus es;
int degree;
double fitTolerance,controlPtTol,knotTol;
Adesk::Boolean tangent**ist,tangentStartDef,tangentEndDef,bIsRational,bIsPeriodic,bIsClosed;
AcGeVector3d startTangent,endTangent;
AcGePoint3dArray controlPoints,fitPoints;
AcGeDoubleArray knots,weights;
bIsClosed = pSpline->isClosed();
AcGeNurbCurve3d *pNurb = NULL;
if (pSpline->hasFitData()==Adesk::kTrue/* && isFit*/)
{
AcGeTol tol;
es = pSpline->getFitData(fitPoints,degree,fitTolerance,tangent**ist,startTangent,endTangent);
if (es == Acad::eOk)
{
tangentStartDef = tangent**ist;
tangentEndDef = tangent**ist;
AcGeTol fitTol;
pSpline->fitTolerance();
fitTol.setEqualPoint(fitTolerance);
if (tangent**ist)
{
pNurb = new AcGeNurbCurve3d(fitPoints,startTangent,endTangent,tangentStartDef,tangentEndDef,fitTol);
}
else
{
pNurb = new AcGeNurbCurve3d(fitPoints,fitTol);
}
}
else
{
return Acad::eNotImplementedYet;
}
}
else
{
es = pSpline->getNurbsData(degree,bIsRational,bIsClosed,bIsPeriodic,controlPoints,knots,weights,controlPtTol,knotTol);
if (es == Acad::eOk)
{
if (bIsRational)
{
pNurb = new AcGeNurbCurve3d(degree,knots,controlPoints,weights,bIsPeriodic);
}
else
{
pNurb = new AcGeNurbCurve3d(degree,knots,controlPoints,bIsPeriodic);
}
}
else
{
return Acad::eNotImplementedYet;
}
}
bIsClosed?pNurb->makeClosed():pNurb->makeOpen();
pGe = pNurb;
return es;
}
Acad::ErrorStatus CConversion::AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeNurbCurve3d * pGe)
{
if (pGe->hasFitData())
{
AcGePoint3dArray fitPoints;
AcGeTol fitTolerance;
Adesk::Boolean tangent**ist;
AcGeVector3d startTangent;
AcGeVector3d endTangent;
//double tol;
pGe->getFitData(fitPoints,fitTolerance,tangent**ist,startTangent,endTangent);
pDb = new AcDbSpline(fitPoints,startTangent,endTangent,pGe->order(),fitTolerance.equalPoint());
}
else
{
int degree;
Adesk::Boolean bIsRational,periodic;
AcGePoint3dArray controlPoints;
AcGeKnotVector knots1;
AcGeDoubleArray weights;
pGe->getDefinitionData(degree,bIsRational,periodic,knots1,controlPoints,weights);
AcGeDoubleArray knots;
for (int i = 0;i<knots1.length();i++)
{
knots.append(knots1[i]);
}
pDb =new AcDbSpline(degree,bIsRational,pGe->isClosed(),periodic,controlPoints,knots,weights,0.0,pGe->knots().tolerance());
}
return Acad::eOk;
}
// POLYLINE
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDbPolyline * pPoly)
{
AcGeLineSeg3d *pLine = NULL;
AcGeCircArc3d *pArc = NULL;
AcGeVoidPointerArray GeCurves;
for( int i = 0; i <(int)pPoly->numVerts(); i++ )
{
if( pPoly->segType(i) == AcDbPolyline::kLine )
{
pLine = new AcGeLineSeg3d;
pPoly->getLineSegAt(i, *pLine);
GeCurves.append(pLine);
}
else if( pPoly->segType(i) == AcDbPolyline::kArc )
{
pArc = new AcGeCircArc3d;
pPoly->getArcSegAt(i, *pArc);
GeCurves.append(pArc);
}
}
pGe = new AcGeCompositeCurve3d(GeCurves);
return Acad::eOk;
}
Acad::ErrorStatus CConversion::AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGeCompositeCurve3d * pGe)
{
AcGePoint3d startPnt,endPnt;
if( pGe->hasEndPoint(endPnt) == Adesk ::kFalse ||
pGe->hasStartPoint(startPnt) == Adesk::kFalse)
{
return Acad::eNotImplementedYet;
}
//get the plane of Curve3d
AcGePlane plane;
AcGeLine3d line;
AcGePoint3d p1,p2,p3;
if(pGe->isPlanar(plane))
{
if(pGe->isLinear(line)) //Oh,it's a little tricky!
{
line.getPerpPlane(startPnt,plane);
plane.get(p1,p2,p3);
plane.set(p2,p3-p2);
}
plane.get(p1,p2,p3);
}
else
{
return Acad::eNotImplementedYet;
}
//Creat a polyline
AcDbPolyline *pPoly = new AcDbPolyline();
AcGeVoidPointerArray curveList;
pGe->getCurveList(curveList); //get all the segments
AcGeCurve3d *pCurve = NULL;
AcGeCircArc3d *pArc = NULL;
int i;
double b;
AcGePoint2d pt;
for(i = 0;i < curveList.length();i++)
{
pCurve = (AcGeCurve3d *) (curveList[i]);
pCurve->hasStartPoint(startPnt);
pt = startPnt.convert2d(plane);
if (pCurve->isKindOf(AcGe::kCircArc3d))
{
pArc = (AcGeCircArc3d *)(pCurve);
b = tan(0.25 * pArc->endAng());
if (pArc->normal()!=plane.normal())
{
pPoly->addVertexAt(i,pt,-b);
}
else
{
pPoly->addVertexAt(i,pt,b);
}
}
else
{
pPoly->addVertexAt(i,pt);
}
}
if(!pGe->isClosed())
{
pt = endPnt.convert2d(plane);
pPoly->addVertexAt(i,pt);
}
else
{
pPoly->setClosed(Adesk::kTrue);
}
//the most important step;
AcGeMatrix3d xform;
AcGeVector3d XAxis = p1-p2;
AcGeVector3d YAxis = p3-p2;
AcGeVector3d ZAxis = XAxis.crossProduct(YAxis);
xform.setCoordSystem(p2,XAxis,YAxis,ZAxis);
pPoly->transformBy(xform);
pDb = pPoly;
return Acad::eOk;
}
// POLYLINE3D ?fit 后是折线模拟
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDb3dPolyline * pPoly3d)
{
AcGePoint3dArray pts;
AcGePoint3d pt1;
AcDbObjectId id;
AcDbVertex *p3dVertex=NULL;
Acad::ErrorStatus es;
AcDb3dPolylineVertex *pPoly3dVertex=NULL;
AcDbObjectIterator* vertexIterator = pPoly3d->vertexIterator();
for (vertexIterator->start();!vertexIterator==vertexIterator->done();vertexIterator->step())
{
id=vertexIterator->objectId();
es=acdbOpenObject(p3dVertex,id,AcDb::kForRead);
if (es==Acad::eOk)
{
pPoly3dVertex=AcDb3dPolylineVertex::cast(p3dVertex);
if (pPoly3dVertex->vertexType()!=AcDb::k3dControlVertex)
{
pts.append(pPoly3dVertex->position());
}
}
if (p3dVertex!=NULL)
{
p3dVertex->close();
}
if (pPoly3dVertex!=NULL)
{
pPoly3dVertex->close();
}
}
delete vertexIterator;
if (pPoly3d->isClosed())
{
pPoly3d->getStartPoint(pt1);
pts.append(pt1);
}
pGe=new AcGePolyline3d(pts);
return Acad::eOk;
}
Acad::ErrorStatus CConversion::AcGeCurveToAcDbCurve(AcDbCurve * &pDb,const AcGePolyline3d *pGe)
{
AcGePoint3dArray pts;
for (int i = 0;i < pGe->numControlPoints();i++)
{
pts.append(pGe->controlPointAt(i));
}
pDb = new AcDb3dPolyline((AcDb::Poly3dType)pGe->type(),pts,pGe->isClosed());
return Acad::eOk;
}
// POLYLINE2D
Acad::ErrorStatus CConversion::AcDbCurveToAcGeCurve(AcGeCurve3d * &pGe,const AcDb2dPolyline *pPoly2d)
{
AcDb::Poly2dType type;
type=pPoly2d->polyType();
AcDbPolyline * pLwpoly = NULL;
Acad::ErrorStatus es;
if ((type==AcDb::k2d**Poly)||(type==AcDb::k2dFitCurvePoly))
{
pLwpoly=new AcDbPolyline;
es = pLwpoly->convertFrom((AcDbEntity *&)pPoly2d,Adesk::kFalse);
if (es!=Acad::eOk)
{
delete pLwpoly;
pLwpoly=NULL;
return es;
}
es = AcDbCurveToAcGeCurve(pGe,pLwpoly);
pLwpoly->close();
return es;
}
else
{
AcGeVoidPointerArray GeCurves;
AcGePoint3d pt1;
AcGePoint3d pt2;
double Param;
pPoly2d->getEndParam(Param);
AcGeLineSeg3d *pLine = NULL;
for (int i= 0; i < (int)Param;i++)
{
pPoly2d->getPointAtParam(i,pt1);
pPoly2d->getPointAtParam(i+1,pt2);
pLine = new AcGeLineSeg3d(pt1,pt2);
GeCurves.append(pLine);
}
pGe = new AcGeCompositeCurve3d(GeCurves);
return Acad::eOk;
}
}

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[研讨] AcDbCurve转换AcGeCurve中的样条化3dpoly

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