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[code]// This is command 'INTSOLID'
void Asdkintsolid()
{
AcDbObjectId lineId;
AcDbObjectId solidId;
AcDbEntity * pEnt;
AcDbEntity * pLinearEnt;
AcGePoint3dArray hitPoints;
int nHitsWanted;
ads_name en ;
ads_point pt ;
// User picks a line
if ( acedEntSel (_T("\nSelect a line: "), en, pt) != RTNORM )
return;
// Get pointer to line
if ( acdbGetObjectId (lineId, en) != Acad::eOk )
{
return;
}
acdbOpenAcDbEntity(pLinearEnt, lineId, AcDb::kForRead );
if(pLinearEnt == NULL )
{
acutPrintf(_T("\nCannot open line"));
return;
}
// User picks a solid
if ( acedEntSel (_T("\nSelect a solid: "), en, pt) != RTNORM )
return;
// Get pointer to line
if ( acdbGetObjectId (solidId, en) != Acad::eOk )
{
return;
}
acdbOpenAcDbEntity(pEnt, solidId, AcDb::kForRead );
if(pEnt == NULL )
{
acutPrintf(_T("\nCannot open solid"));
pLinearEnt->close();
return;
}
// Get required number of intersections to be returned.
// If user enters zero, then we will return all intersections.
if (RTNORM != acedGetInt(_T("\nEnter number of Hits required : "),
&nHitsWanted))
{
acutPrintf(_T("\nYou must enter an integer"));
pEnt->close();
pLinearEnt->close();
return;
}
// Find number of intersections
if ( Acad::eOk != getHits( pLinearEnt, pEnt,
nHitsWanted, hitPoints))
{
pEnt->close();
pLinearEnt->close();
return;
}
// Entities not needed any more
pEnt->close();
pLinearEnt->close();
// Print out intersections
int len = hitPoints.length();
if ( len == 0 )
{
acutPrintf(_T("\nNo intersections found."));
}
else
{
acutPrintf(_T("\n%d intersections found."), len);
for (int i = 0; i < len; i++)
{
AcGePoint3d pt = hitPoints[i];
acutPrintf(_T("\nIntersection %d: (%f, %f, %f)"),
i+1, pt[X], pt[Y], pt[Z]);
}
}
return;
}
Acad::ErrorStatus getHits( AcDbEntity * pLinearEnt,
AcDbEntity * pEnt,
int nHitsWanted,
AcGePoint3dArray &hitPoints)
// Parameters:
// AcDbEntity * pLinearEnt - pointer to a line
// AcDbEntity * pEnt - pointer to a solid
// int nHitsWanted - number of intersections
// to return (0 means return all)
// AcGePoint3dArray hitPoints - array to
// return intersection points
// Returns:
// Acad::eOk - if all is well
// Acad::eInvalidInput - if there is a problem
{
// Check that solid pointer is a really a solid
if( !(pEnt->isKindOf(AcDb3dSolid::desc()) ||
pEnt->isKindOf(AcDbRegion::desc()) ||
pEnt->isKindOf(AcDbBody::desc()) ) )
{
acutPrintf(_T("\nSecond argument must be a solid, not a %s"),
pEnt->isA()->name());
return Acad::eInvalidInput;
}
// Check that the line pointer is a line.
// If it is, create a corresponding AcGe object.
AcGeLinearEnt3d * pGeLine;
if(pLinearEnt->isKindOf( AcDbLine::desc() )) {
AcDbLine * pLine = (AcDbLine*)pLinearEnt;
pGeLine = new AcGeLineSeg3d(pLine->startPoint(),
pLine->endPoint() );
} else if (pLinearEnt->isKindOf( AcDbRay::desc() )) {
AcDbRay * pRay = (AcDbRay*)pLinearEnt;
pGeLine = new AcGeRay3d(pRay->basePoint(), pRay->unitDir() );
} else if (pLinearEnt->isKindOf( AcDbXline::desc() )) {
AcDbXline * pXline = (AcDbXline *)pLinearEnt;
pGeLine = new AcGeLine3d(pXline->basePoint(),
pXline->unitDir() );
} else {
acutPrintf(_T("\nFirst argument must be a line, not a %s"),
pLinearEnt->isA()->name());
return Acad::eInvalidInput;
}
// Find the number of intersections using B-Rep API
AcBrBrep*pBrep = new AcBrBrep;
AcDbObjectId solidId = pEnt->objectId();
pBrep->setSubentPath( AcDbFullSubentPath( solidId,
AcDbSubentId()));
AcBrHit*pHits = NULL;
Adesk::UInt32 nHitsFound;
pBrep->getLineContainment(*pGeLine, nHitsWanted,
nHitsFound, pHits );
// Append valid intersection points to hitPoints
for( Adesk::UInt32 i=0;i<nHitsFound; i++ ) {
AcBrEntity*pHitEntity = NULL;
pHits[i].getEntityHit( pHitEntity );
if( pHitEntity == NULL )
continue;
AcGePoint3d hitPt;
pHits[i].getPoint(hitPt);
if( !pHitEntity->isKindOf(AcBrBrep::desc()) ) {
hitPoints.append( hitPt );
}
else
{
acutPrintf(
_T("\nIgnoring the point at (%f, %f, %f) with a %s"),
hitPt.x, hitPt.y, hitPt.z, pHitEntity->isA()->name());
}
delete pHitEntity;
}
// Convert points from WCS to UCS
int nPts = hitPoints.length();
for( int i=0; i<nPts;i++ ) {
ads_point pt;
asPnt3d(pt) = hitPoints[i];
acdbWcs2Ucs(pt,pt,0);
hitPoints[i] = asPnt3d(pt);
}
// Tidy up
delete [] pHits;
delete pBrep;
delete pGeLine;
// end of function - everything must have worked
return Acad::eOk;
}[/code] |
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发表于 2024-6-22 09:46:18
发表于 2024-8-6 10:42:43
