static AcGePoint3dArray Intersect(AcDbSurface* pSurface, AcGeLine3d line)
{
AcGePoint3dArray returnPtArray;
AcDbBody* pBody = new AcDbBody();
// 2013
// Acad::ErrorStatus es = pBody->setASMBody(pSurface->ASMBodyCopy());
//before 20123
Acad::ErrorStatus es = pBody->setBody(pSurface->body());
//build AcBrBrep
AcBrBrep* pBrep = new AcBrBrep();
//
if (AcBr::eOk == pBrep->set(*pBody))
{
AcBrBrepFaceTraverser* pFaceTrav = new AcBrBrepFaceTraverser;
if (AcBr::eOk == pFaceTrav->setBrep(*pBrep))
{
for (pFaceTrav->restart(); !pFaceTrav->done(); pFaceTrav->next())
{
AcBrFace face;
if (AcBr::eOk == pFaceTrav->getFace(face))
{
double area = 0.0f;
face.getSurfaceArea(area);
acutPrintf(L"\nSurface Area: %f", area);
//*****whole surface of the Brep face******
//AcGeNurbSurface nurbSurface;
//face.getSurfaceAsNurb(nurbSurface);
//AcGeCurveSurfInt curveSI;
////input the curve and line
//curveSI.set(line,nurbSurface);
////get the count of intersect points
//int count = curveSI.numIntPoints(err_1);
// if(err_1 == AcGe::kXXOk && count >0 )
// {
// AcGeIntersectError err_2;
// for(int index = 0 ;index < count; index ++)
// {
// AcGePoint3d pt =
// curveSI.intPoint(index,err_2);
// returnPtArray.append(pt);
// }
//
// }
//**********
//****real surface of the orignal AcDbSurface
AcGeExternalBoundedSurface** nurbs = NULL;
Adesk::UInt32 numNurbs = 0;
face.getSurfaceAsTrimmedNurbs(numNurbs, nurbs);
//*****
for (Adesk::UInt32 i = 0; i < numNurbs; i++)
{
AcGeCurveSurfInt curveSI;
AcGeIntersectError err_1 = AcGe::kXXOk;
//input the curve and line
curveSI.set(line, *nurbs[i]);
//get the count of intersect points
int count = curveSI.numIntPoints(err_1);
if (err_1 == AcGe::kXXOk && count > 0)
{
AcGeIntersectError err_2;
for (int index = 0; index < count; index++)
{
AcGePoint3d pt =
curveSI.intPoint(index, err_2);
returnPtArray.append(pt);
}
}
delete nurbs[i];
}
// your responsibility to delete the
// array of surfaces
delete[] nurbs;
}
}
}
delete pFaceTrav;
}
delete pBrep;
return returnPtArray;
}
static void getIntersectPts(void)
{
ads_name ename;
ads_point pickpt;
AcDbObjectId objId;
AcDbObject* pObj;
int rc;
// select a surface
rc = acedEntSel(L"\nSelect Surface: ", ename, pickpt);
if (rc != RTNORM)
{
if (rc != RTCAN)
acutPrintf(L"\nError selecting entity ");
return;
}
acdbGetObjectId(objId, ename);
acdbOpenObject(pObj, objId, AcDb::kForRead);
AcDbSurface* pEntity1 = AcDbSurface::cast(pObj);
if (!pEntity1)
{
acutPrintf(L"\nSelection Invalid...");
pObj->close();
return;
}
// call Intersect
AcGePoint3dArray points =
Intersect(pEntity1, AcGeLine3d(AcGePoint3d(0, 0, 0),
AcGePoint3d(0, 0, 1)));
if (points.length() > 0)
{
// iterate the points
}
pObj->close();
}
