1 // Copyright (C) 2005-2024 OPEN CASCADE
3 // This library is free software; you can redistribute it and/or
4 // modify it under the terms of the GNU Lesser General Public
5 // License as published by the Free Software Foundation; either
6 // version 2.1 of the License, or (at your option) any later version.
8 // This library is distributed in the hope that it will be useful,
9 // but WITHOUT ANY WARRANTY; without even the implied warranty of
10 // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
11 // Lesser General Public License for more details.
13 // You should have received a copy of the GNU Lesser General Public
14 // License along with this library; if not, write to the Free Software
15 // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
17 // See http://www.salome-platform.org/ or email : webmaster.salome@opencascade.com
19 // File : LIGHTGUI_TextPrs.cxx
20 // Author : Natalia DONIS
22 #include "LIGHTGUI_TextPrs.h"
24 #include <Graphic3d_ArrayOfPoints.hxx>
25 #include <Graphic3d_Group.hxx>
26 #include <Graphic3d_Vertex.hxx>
27 #include <Prs3d_Root.hxx>
28 #include <Select3D_SensitivePoint.hxx>
29 #include <SelectMgr_EntityOwner.hxx>
30 #include <SelectMgr_Selection.hxx>
33 \class LIGHTGUI_TextPrs
34 \brief Presentation object for the string line.
36 This class is used to display a text line in the OCC 3D viewer.
39 IMPLEMENT_STANDARD_RTTIEXT( LIGHTGUI_TextPrs, AIS_InteractiveObject )
41 const Standard_Integer aCharSize = 16;
45 \param theString text string
46 \param thePos text position in the viewer
48 LIGHTGUI_TextPrs::LIGHTGUI_TextPrs( const char* theString, const gp_Pnt& thePos )
51 myString = new char[strlen( theString ) + 1];
52 strcpy( myString, theString );
58 LIGHTGUI_TextPrs::~LIGHTGUI_TextPrs()
64 \brief Get presentation text size.
66 int LIGHTGUI_TextPrs::TextSize()
72 \brief Compute the presentation.
73 \param prsMgr presentation manager (not used)
74 \param thePrs presentation
75 \param mode display mode
77 void LIGHTGUI_TextPrs::Compute( const Handle(PrsMgr_PresentationManager3d)& /*prsMgr*/,
78 const Handle(Prs3d_Presentation)& thePrs,
79 const Standard_Integer /*mode*/ )
81 Handle(Graphic3d_Group) aGroup = Prs3d_Root::CurrentGroup( thePrs );
82 Graphic3d_Vertex aTextPos;
83 aTextPos.SetCoord( myPos.X(), myPos.Y(), myPos.Z() );
84 Handle(Graphic3d_ArrayOfPoints) anArrayOfPoints = new Graphic3d_ArrayOfPoints (1);
85 anArrayOfPoints->AddVertex(myPos.X(), myPos.Y(), myPos.Z());
86 aGroup->AddPrimitiveArray(anArrayOfPoints);
87 aGroup->Text( myString, aTextPos, aCharSize );
91 \brief Compute selection of the presentation.
92 \param theSelection current selection object
93 \param mode display mode
95 void LIGHTGUI_TextPrs::ComputeSelection( const Handle(SelectMgr_Selection)& theSelection,
96 const Standard_Integer /*mode*/ )
98 Handle(SelectMgr_EntityOwner) eown = new SelectMgr_EntityOwner(this);
99 eown -> SelectBasics_EntityOwner::Set( aCharSize );
100 Handle(Select3D_SensitivePoint) seg = new Select3D_SensitivePoint(eown, myPos);
101 theSelection->Add(seg);