liboce-visualization-dev 0.15-5 / usr / include / oce / AIS_LengthDimension.hxx

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// Copyright (c) 1999-2013 OPEN CASCADE SAS
//
// This file is part of Open CASCADE Technology software library.
//
// This library is free software; you can redistribute it and / or modify it
// under the terms of the GNU Lesser General Public version 2.1 as published
// by the Free Software Foundation, with special exception defined in the file
// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
// distribution for complete text of the license and disclaimer of any warranty.
//
// Alternatively, this file may be used under the terms of Open CASCADE
// commercial license or contractual agreement.

#ifndef _AIS_LengthDimension_HeaderFile
#define _AIS_LengthDimension_HeaderFile

#include <AIS.hxx>
#include <AIS_Dimension.hxx>
#include <AIS_Drawer.hxx>
#include <AIS_KindOfDimension.hxx>
#include <Geom_Plane.hxx>
#include <Geom_Transformation.hxx>
#include <gp_Pnt.hxx>
#include <gp_Dir.hxx>
#include <Prs3d_DimensionAspect.hxx>
#include <Prs3d_Presentation.hxx>
#include <Prs3d_Projector.hxx>
#include <PrsMgr_PresentationManager3d.hxx>
#include <SelectMgr_Selection.hxx>
#include <Standard.hxx>
#include <Standard_Macro.hxx>
#include <Standard_DefineHandle.hxx>
#include <TopoDS.hxx>
#include <TopoDS_Vertex.hxx>
#include <TCollection_ExtendedString.hxx>

class TopoDS_Face;
class TCollection_ExtendedString;
class gp_Pnt;
class TopoDS_Edge;
class TopoDS_Shape;
class Geom_Plane;
class PrsMgr_PresentationManager3d;
class Prs3d_Presentation;
class Prs3d_Projector;
class Geom_Transformation;
class SelectMgr_Selection;
class AIS_Drawer;
class Bnd_Box;
class gp_Dir;
class TopoDS_Vertex;
class Standard_Transient;
class Handle(Standard_Type);
class Handle(AIS_Relation);
class AIS_LengthDimension;

DEFINE_STANDARD_HANDLE (AIS_LengthDimension, AIS_Dimension)

//! Length dimension. Can be constructued:
//! - Between two generic points.
//! - Between two vertices.
//! - Between two faces.
//! - Between two parallel edges.
//! - Between face and edge.
//!
//! In case of two points (vertices) or one linear edge the user-defined plane
//! that includes this geometry is necessary to be set.
//!
//! In case of face-edge, edge-vertex or face-face lengthes the automatic plane
//! computing is allowed. For this plane the third point is found on the
//! edge or on the face.
//! 
//! Please note that if the inappropriate geometry is defined
//! or the distance between measured points is less than
//! Precision::Confusion(), the dimension is invalid and its
//! presentation can not be computed.
class AIS_LengthDimension : public AIS_Dimension
{
public:

  //! Construct length dimension between face and edge.
  //! Here dimension can be built without user-defined plane.
  //! @param theFace [in] the face (first shape).
  //! @param theEdge [in] the edge (second shape).
  Standard_EXPORT AIS_LengthDimension (const TopoDS_Face& theFace,
                                       const TopoDS_Edge& theEdge);

public:

  //! Construct length dimension between two faces.
  //! @param theFirstFace [in] the first face (first shape).
  //! @param theSecondFace [in] the second face (second shape).
  Standard_EXPORT AIS_LengthDimension (const TopoDS_Face& theFirstFace,
                                       const TopoDS_Face& theSecondFace);

  //! Construct length dimension between two points in
  //! the specified plane.
  //! @param theFirstPoint [in] the first point.
  //! @param theSecondPoint [in] the second point.
  //! @param thePlane [in] the plane to orient dimension.
  Standard_EXPORT AIS_LengthDimension (const gp_Pnt& theFirstPoint,
                                       const gp_Pnt& theSecondPoint,
                                       const gp_Pln& thePlane);

  //! Construct length dimension between two arbitrary shapes in
  //! the specified plane.
  //! @param theFirstShape [in] the first shape.
  //! @param theSecondShape [in] the second shape.
  //! @param thePlane [in] the plane to orient dimension.
  Standard_EXPORT AIS_LengthDimension (const TopoDS_Shape& theFirstShape,
                                       const TopoDS_Shape& theSecondShape,
                                       const gp_Pln& thePlane);

  //! Construct length dimension of linear edge.
  //! @param theEdge [in] the edge to measure.
  //! @param thePlane [in] the plane to orient dimension.
  Standard_EXPORT AIS_LengthDimension (const TopoDS_Edge& theEdge,
                                       const gp_Pln& thePlane);

public:

  //! @return first attachement point.
  const gp_Pnt& FirstPoint() const
  {
    return myFirstPoint;
  }

  //! @return second attachement point.
  const gp_Pnt& SecondPoint() const
  {
    return mySecondPoint;
  }

  //! @return first attachement shape.
  const TopoDS_Shape& FirstShape() const
  {
    return myFirstShape;
  }

  //! @return second attachement shape.
  const TopoDS_Shape& SecondShape() const
  {
    return mySecondShape;
  }

public:

  //! Measure distance between two points.
  //! The dimension will become invalid if the new distance between
  //! attachement points is less than Precision::Confusion().
  //! @param theFirstPoint [in] the first point.
  //! @param theSecondPoint [in] the second point.
  //! @param thePlane [in] the user-defined plane
  Standard_EXPORT void SetMeasuredGeometry (const gp_Pnt& theFirstPoint,
                                            const gp_Pnt& theSecondPoint,
                                            const gp_Pln& thePlane);

  //! Measure length of edge.
  //! The dimension will become invalid if the new length of edge
  //! is less than Precision::Confusion().
  //! @param theEdge [in] the edge to measure.
  //! @param thePlane [in] the user-defined plane
  Standard_EXPORT void SetMeasuredGeometry (const TopoDS_Edge& theEdge,
                                            const gp_Pln& thePlane);

  //! Measure distance between two faces.
  //! The dimension will become invalid if the distance can not
  //! be measured or it is less than Precision::Confusion().
  //! @param theFirstFace [in] the first face (first shape).
  //! @param theSecondFace [in] the second face (second shape).
  Standard_EXPORT void SetMeasuredGeometry (const TopoDS_Face& theFirstFace,
                                            const TopoDS_Face& theSecondFace);

  //! Measure distance between face and edge.
  //! The dimension will become invalid if the distance can not
  //! be measured or it is less than Precision::Confusion().
  //! @param theFace [in] the face (first shape).
  //! @param theEdge [in] the edge (second shape).
  Standard_EXPORT void SetMeasuredGeometry (const TopoDS_Face& theFace,
                                            const TopoDS_Edge& theEdge);

  //! Measure distance between generic pair of shapes (edges, vertices, length),
  //! where measuring is applicable.
  //! @param theFirstShape [in] the first shape.
  //! @param theSecondShape [in] the second shape.
  Standard_EXPORT void SetMeasuredShapes (const TopoDS_Shape& theFirstShape,
                                          const TopoDS_Shape& theSecondShape);

  //! @return the display units string.
  Standard_EXPORT virtual const TCollection_AsciiString& GetDisplayUnits () const;
  
  //! @return the model units string.
  Standard_EXPORT virtual const TCollection_AsciiString& GetModelUnits () const;

  Standard_EXPORT virtual void SetDisplayUnits (const TCollection_AsciiString& theUnits);

  Standard_EXPORT virtual void SetModelUnits (const TCollection_AsciiString& theUnits);

public:

  DEFINE_STANDARD_RTTI(AIS_LengthDimension)

protected:

  //! Checks if the plane includes first and second points to build dimension.
  Standard_EXPORT virtual Standard_Boolean CheckPlane (const gp_Pln& thePlane) const;

  Standard_EXPORT virtual gp_Pln ComputePlane(const gp_Dir& theAttachDir) const;

  Standard_EXPORT Standard_Real ComputeValue() const;

  Standard_EXPORT virtual void Compute (const Handle(PrsMgr_PresentationManager3d)& thePresentationManager,
                                        const Handle(Prs3d_Presentation)& thePresentation,
                                        const Standard_Integer theMode = 0);

  Standard_EXPORT virtual void ComputeFlyoutSelection (const Handle(SelectMgr_Selection)& theSelection,
                                                       const Handle(SelectMgr_EntityOwner)& theEntityOwner);

protected:

  //! Checks that distance between two points is valid.
  //! @param theFirstPoint [in] the first point.
  //! @param theSecondPoint [in] the second point.
  Standard_EXPORT Standard_Boolean IsValidPoints (const gp_Pnt& theFirstPoint,
                                                  const gp_Pnt& theSecondPoint) const;

  Standard_EXPORT Standard_Boolean InitTwoEdgesLength (const TopoDS_Edge & theFirstEdge,
                                                       const TopoDS_Edge& theSecondEdge,
                                                       gp_Dir& theEdgeDir);

  //! Auxiliary method for InitTwoShapesPoints()
  //! in case of the distance between edge and vertex.
  //! Finds the point on the edge that is the closest one to <theVertex>.
  //! @param theEdgeDir [out] is the direction on the edge to build
  //! automatical plane.
  Standard_EXPORT Standard_Boolean InitEdgeVertexLength (const TopoDS_Edge& theEdge,
                                                         const TopoDS_Vertex& theVertex,
                                                         gp_Dir& theEdgeDir,
                                                         Standard_Boolean isInfinite);

  //! Auxiliary method for InitTwoShapesPoints()
  //! in case of the distance between face and edge.
  //! The first attachment point is first parameter point from <theEdge>.
  //! Find the second attachment point which belongs to <theFace>
  //! Iterate over the edges of the face and find the closest point according
  //! to finded point on edge.
  //! @param theEdgeDir [out] is the direction on the edge to build
  //! automatical plane.
  Standard_EXPORT Standard_Boolean InitEdgeFaceLength (const TopoDS_Edge& theEdge,
                                                       const TopoDS_Face& theFace,
                                                       gp_Dir& theEdgeDir);

  //! Initialization of two attach points in case of two owner shapes.
  Standard_EXPORT Standard_Boolean InitTwoShapesPoints (const TopoDS_Shape& theFirstShape,
                                                        const TopoDS_Shape& theSecondShape,
                                                        gp_Pln& theComputedPlane,
                                                        Standard_Boolean& theIsPlaneComputed);

  //! Initialization of two attach points in case of one owner shape.
  Standard_EXPORT Standard_Boolean InitOneShapePoints (const TopoDS_Shape& theShape);

private:

  gp_Pnt myFirstPoint;
  gp_Pnt mySecondPoint;
  TopoDS_Shape myFirstShape;
  TopoDS_Shape mySecondShape;
};

#endif // _AIS_LengthDimension_HeaderFile

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