如何获取选择点映射到视图空间中？源码分享
如何获取选择点映射到视图空间中？源码分享
//------------------------------------------------------------------------------
// Select Screen Position and map to Modeling View Plane
//------------------------------------------------------------------------------
bool GtacPmi::SelectPmiPosition(NXOpen::Point3d &pos)
{
NXOpen::View* myView = NULL;
NXOpen::Point3d myCursor(0, 0, 0);
NXOpen::Selection::DialogResponse myResponse = m_ui->SelectionManager()->SelectScreenPosition("Select Screen Origin", &myView, &myCursor);
if (myResponse == NXOpen::Selection::DialogResponsePick)
{
// obtain the current default annotation plane where PMIs are placed on
NXOpen::Xform *xform1;
xform1 = m_wpart->Annotations()->GetDefaultAnnotationPlane(NXOpen::Annotations::PmiDefaultPlaneModelView);
NXOpen::Matrix3x3 vmxDefaultPlane = xform1->Orientation();
NXOpen::Point3d ptDefaultPlane = xform1->Origin();
NXOpen::Vector3d vecDefaultPlane(vmxDefaultPlane.Zx, vmxDefaultPlane.Zy, vmxDefaultPlane.Zz);
// create the ray 'into the screen' at the selected cursor position
NXOpen::Matrix3x3 vmx = myView->Matrix();
NXOpen::Point3d p1(myCursor.X - vmx.Zx * 1000, myCursor.Y - vmx.Zy * 1000, myCursor.Z - vmx.Zz * 1000);
NXOpen::Point3d p2(myCursor.X + vmx.Zx * 1000, myCursor.Y + vmx.Zy * 1000, myCursor.Z + vmx.Zz * 1000);
NXOpen::Line *lineRay = m_wpart->Curves()->CreateLine(p1, p2);
lineRay->SetName("Ray");
// create the plane from the view to intersect with the ray
NXOpen::Plane *planeView = m_wpart->Planes()->CreatePlane(ptDefaultPlane, vecDefaultPlane, NXOpen::SmartObject::UpdateOptionWithinModeling);
planeView->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
planeView->SetName("ViewPlane");
// now create the intersection point
NXOpen::Point *pntInterSect = m_wpart->Points()->CreatePoint(planeView, lineRay, NULL, NULL, NXOpen::SmartObject::UpdateOptionWithinModeling);
pntInterSect->SetVisibility(NXOpen::SmartObject::VisibilityOptionVisible);
pntInterSect->SetColor(10);
pntInterSect->SetName("Intersection");
pos = pntInterSect->Coordinates();
print("\nPMI Position:", pos);
// clean up - comment to see intermediate objects
NXOpen::Session::UndoMarkId markDel = m_session->SetUndoMark(NXOpen::Session::MarkVisibilityVisible, "Delete");
int nErrs1 = m_session->UpdateManager()->AddToDeleteList(pntInterSect);
int nErrs2 = m_session->UpdateManager()->AddToDeleteList(planeView);
int nErrs3 = m_session->UpdateManager()->AddToDeleteList(lineRay);
int nErrs4 = m_session->UpdateManager()->DoUpdate(markDel);
m_session->DeleteUndoMark(markDel, NULL);
return true;
}
return false;
}
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