0031668: Visualization - WebGL sample doesn't work on Emscripten 1.39

[occt.git] / src / SelectMgr / SelectMgr_ViewerSelector3d.hxx

// Created on: 1995-03-15
// Created by: Robert COUBLANC
// Copyright (c) 1995-1999 Matra Datavision
// Copyright (c) 1999-2014 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 License 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 _SelectMgr_ViewerSelector3d_HeaderFile
#define _SelectMgr_ViewerSelector3d_HeaderFile

#include <Graphic3d_SequenceOfStructure.hxx>
#include <SelectMgr_ViewerSelector.hxx>
#include <SelectMgr_Selection.hxx>
#include <StdSelect_TypeOfSelectionImage.hxx>

class Graphic3d_Structure;
class Graphic3d_TransformPers;
class V3d_View;

//! Selector Usable by Viewers from V3d
class SelectMgr_ViewerSelector3d : public SelectMgr_ViewerSelector
{
  DEFINE_STANDARD_RTTIEXT(SelectMgr_ViewerSelector3d, SelectMgr_ViewerSelector)
public:

  //! Constructs an empty 3D selector object.
  Standard_EXPORT SelectMgr_ViewerSelector3d();

  //! Picks the sensitive entity at the pixel coordinates of
  //! the mouse <theXPix> and <theYPix>. The selector looks for touched areas and owners.
  Standard_EXPORT void Pick (const Standard_Integer theXPix,
                             const Standard_Integer theYPix,
                             const Handle(V3d_View)& theView);

  //! Picks the sensitive entity according to the minimum
  //! and maximum pixel values <theXPMin>, <theYPMin>, <theXPMax>
  //! and <theYPMax> defining a 2D area for selection in the 3D view aView.
  Standard_EXPORT void Pick (const Standard_Integer theXPMin,
                             const Standard_Integer theYPMin,
                             const Standard_Integer theXPMax,
                             const Standard_Integer theYPMax,
                             const Handle(V3d_View)& theView);

  //! pick action - input pixel values for polyline selection for selection.
  Standard_EXPORT void Pick (const TColgp_Array1OfPnt2d& thePolyline,
                             const Handle(V3d_View)& theView);

  //! Dump of detection results into image.
  //! This method performs axis picking for each pixel in the image
  //! and generates a color depending on picking results and selection image type.
  //! @param theImage       result image, should be initialized
  //! @param theView        3D view defining camera position
  //! @param theType        type of image to define
  //! @param thePickedIndex index of picked entity (1 means topmost)
  Standard_EXPORT Standard_Boolean ToPixMap (Image_PixMap&                        theImage,
                                             const Handle(V3d_View)&              theView,
                                             const StdSelect_TypeOfSelectionImage theType,
                                             const Standard_Integer               thePickedIndex = 1);

public:

  //! Displays sensitives in view <theView>.
  Standard_EXPORT void DisplaySensitive (const Handle(V3d_View)& theView);

  Standard_EXPORT void ClearSensitive (const Handle(V3d_View)& theView);

  Standard_EXPORT void DisplaySensitive (const Handle(SelectMgr_Selection)& theSel,
                                         const gp_Trsf& theTrsf,
                                         const Handle(V3d_View)& theView,
                                         const Standard_Boolean theToClearOthers = Standard_True);

  //! Dumps the content of me into the stream
  Standard_EXPORT void DumpJson (Standard_OStream& theOStream, Standard_Integer theDepth = -1) const;

protected:

  //! Update z-layers order map.
  Standard_EXPORT void updateZLayers (const Handle(V3d_View)& theView);

protected:

  Graphic3d_SequenceOfStructure myStructs; //!< list of debug presentations
};

DEFINE_STANDARD_HANDLE(SelectMgr_ViewerSelector3d, SelectMgr_ViewerSelector)

#endif