[occt.git] / src / SelectMgr / SelectMgr_SelectingVolumeManager.cxx

// Created on: 2014-05-22
// Created by: Varvara POSKONINA
// Copyright (c) 2005-2014 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.

#include <SelectMgr_SelectingVolumeManager.hxx>

//=======================================================================
// function : SelectMgr_SelectingVolumeManager
// purpose  : Creates instances of all available selecting volume types
//=======================================================================
SelectMgr_SelectingVolumeManager::SelectMgr_SelectingVolumeManager (Standard_Boolean theToAllocateFrustums)
{
  myActiveSelectionType = Unknown;
  myToAllowOverlap = Standard_False;

  if (theToAllocateFrustums)
  {
    mySelectingVolumes[Frustum] = new SelectMgr_RectangularFrustum();
    mySelectingVolumes[FrustumSet] = new SelectMgr_TriangularFrustumSet();
  }
}

//=======================================================================
// function : ScaleAndTransform
// purpose  : IMPORTANT: Scaling makes sense only for frustum built on a single point!
//            Note that this method does not perform any checks on type of the frustum.
//
//            Returns a copy of the frustum resized according to the scale factor given
//            and transforms it using the matrix given.
//            There are no default parameters, but in case if:
//                - transformation only is needed: @theScaleFactor must be initialized
//                  as any negative value;
//                - scale only is needed: @theTrsf must be set to gp_Identity.
//            Builder is an optional argument that represents corresponding settings for
//            re-constructing transformed frustum from scratch. Can be null if reconstruction
//            is not needed furthermore in the code.
//=======================================================================
SelectMgr_SelectingVolumeManager SelectMgr_SelectingVolumeManager::ScaleAndTransform (const Standard_Integer theScaleFactor,
                                                                                      const gp_GTrsf& theTrsf,
                                                                                      const Handle(SelectMgr_FrustumBuilder)& theBuilder) const
{
  SelectMgr_SelectingVolumeManager aMgr (Standard_False);

  if (myActiveSelectionType == Unknown)
    return aMgr;

  aMgr.myActiveSelectionType = myActiveSelectionType;
  aMgr.mySelectingVolumes[myActiveSelectionType / 2]
    = mySelectingVolumes[myActiveSelectionType / 2]->ScaleAndTransform (theScaleFactor, theTrsf);
  aMgr.myToAllowOverlap = myToAllowOverlap;
  aMgr.mySelectingVolumes[myActiveSelectionType / 2]->SetBuilder (theBuilder);
  aMgr.myViewClipPlanes = myViewClipPlanes;
  aMgr.myObjectClipPlanes = myObjectClipPlanes;
  aMgr.myViewClipRange = myViewClipRange;

  return aMgr;
}

//=======================================================================
// function : GetActiveSelectionType
// purpose  :
//=======================================================================
Standard_Integer SelectMgr_SelectingVolumeManager::GetActiveSelectionType() const
{
  return myActiveSelectionType;
}

//=======================================================================
// function : SetActiveSelectionType
// purpose  :
//=======================================================================
void SelectMgr_SelectingVolumeManager::SetActiveSelectionType (const SelectionType& theType)
{
  myActiveSelectionType = theType;
}

//=======================================================================
// function : SetCamera
// purpose  : Updates camera projection and orientation matrices in all
//            selecting volumes
//=======================================================================
void SelectMgr_SelectingVolumeManager::SetCamera (const Handle(Graphic3d_Camera) theCamera)
{
  for (Standard_Integer anIdx = 0; anIdx < VolumeTypesNb; ++anIdx)
  {
    mySelectingVolumes[anIdx]->SetCamera (theCamera);
  }
}

//=======================================================================
// function : SetCamera
// purpose  : Updates camera projection and orientation matrices in all
//            selecting volumes
//=======================================================================
void SelectMgr_SelectingVolumeManager::SetCamera (const Graphic3d_Mat4d& theProjection,
                                                  const Graphic3d_Mat4d& theWorldView,
                                                  const Standard_Boolean theIsOrthographic,
                                                  const Graphic3d_WorldViewProjState& theWVPState)
{
  for (Standard_Integer anIdx = 0; anIdx < VolumeTypesNb; ++anIdx)
  {
    mySelectingVolumes[anIdx]->SetCamera (theProjection, theWorldView, theIsOrthographic, theWVPState);
  }
}

//=======================================================================
// function : ProjectionMatrix
// purpose  : Returns current projection transformation common for all
//            selecting volumes
//=======================================================================
const Graphic3d_Mat4d& SelectMgr_SelectingVolumeManager::ProjectionMatrix() const
{
  return mySelectingVolumes[Frustum]->ProjectionMatrix();
}

//=======================================================================
// function : WorldViewMatrix
// purpose  : Returns current world view transformation common for all
//            selecting volumes
//=======================================================================
const Graphic3d_Mat4d& SelectMgr_SelectingVolumeManager::WorldViewMatrix() const
{
  return mySelectingVolumes[Frustum]->WorldViewMatrix();
}

//=======================================================================
// function : WorldViewProjState
// purpose  : Returns current camera world view projection transformation
//            state common for all selecting volumes
//=======================================================================
const Graphic3d_WorldViewProjState& SelectMgr_SelectingVolumeManager::WorldViewProjState() const
{
  return mySelectingVolumes[Frustum]->WorldViewProjState();
}

//=======================================================================
// function : WindowSize
// purpose  :
//=======================================================================
void SelectMgr_SelectingVolumeManager::WindowSize (Standard_Integer& theWidth, Standard_Integer& theHeight) const
{
  mySelectingVolumes[Frustum]->WindowSize (theWidth, theHeight);
}

//=======================================================================
// function : SetCamera
// purpose  : Updates viewport in all selecting volumes
//=======================================================================
void SelectMgr_SelectingVolumeManager::SetViewport (const Standard_Real theX,
                                                    const Standard_Real theY,
                                                    const Standard_Real theWidth,
                                                    const Standard_Real theHeight)
{
  for (Standard_Integer anIdx = 0; anIdx < VolumeTypesNb; ++anIdx)
  {
    mySelectingVolumes[anIdx]->SetViewport (theX, theY, theWidth, theHeight);
  }
}

//=======================================================================
// function : SetWindowSize
// purpose  : Updates window size in all selecting volumes
//=======================================================================
void SelectMgr_SelectingVolumeManager::SetWindowSize (const Standard_Integer theWidth,
                                                      const Standard_Integer theHeight)
{
  for (Standard_Integer anIdx = 0; anIdx < VolumeTypesNb; ++anIdx)
  {
    mySelectingVolumes[anIdx]->SetWindowSize (theWidth, theHeight);
  }
}

//=======================================================================
// function : SetPixelTolerance
// purpose  : Updates pixel tolerance in all selecting volumes
//=======================================================================
void SelectMgr_SelectingVolumeManager::SetPixelTolerance (const Standard_Integer theTolerance)
{
  for (Standard_Integer anIdx = 0; anIdx < VolumeTypesNb; ++anIdx)
  {
    mySelectingVolumes[anIdx]->SetPixelTolerance (theTolerance);
  }
}

//=======================================================================
// function : BuildSelectingVolume
// purpose  : Builds rectangular selecting frustum for point selection
//=======================================================================
void SelectMgr_SelectingVolumeManager::BuildSelectingVolume (const gp_Pnt2d& thePoint)
{
  if (myActiveSelectionType != Point)
    return;

  mySelectingVolumes[Frustum]->Build (thePoint);
}

//=======================================================================
// function : BuildSelectingVolume
// purpose  : Builds rectangular selecting frustum for box selection
//=======================================================================
void SelectMgr_SelectingVolumeManager::BuildSelectingVolume (const gp_Pnt2d& theMinPt,
                                                             const gp_Pnt2d& theMaxPt)
{
  if (myActiveSelectionType != Box)
    return;

  mySelectingVolumes[Frustum]->Build (theMinPt, theMaxPt);
}

//=======================================================================
// function : BuildSelectingVolume
// purpose  : Builds set of triangular selecting frustums for polyline
//            selection
//=======================================================================
void SelectMgr_SelectingVolumeManager::BuildSelectingVolume (const TColgp_Array1OfPnt2d& thePoints)
{
  if (myActiveSelectionType != Polyline)
    return;

  mySelectingVolumes[FrustumSet]->Build (thePoints);
}

//=======================================================================
// function : Overlaps
// purpose  : SAT intersection test between defined volume and
//            given axis-aligned box
//=======================================================================
Standard_Boolean SelectMgr_SelectingVolumeManager::Overlaps (const SelectMgr_Vec3& theBoxMin,
                                                             const SelectMgr_Vec3& theBoxMax,
                                                             SelectBasics_PickResult& thePickResult) const
{
  if (myActiveSelectionType == Unknown)
    return Standard_False;

  return mySelectingVolumes[myActiveSelectionType / 2]->Overlaps (theBoxMin, theBoxMax, myViewClipRange, thePickResult);
}

//=======================================================================
// function : Overlaps
// purpose  : Intersection test between defined volume and given point
//=======================================================================
Standard_Boolean SelectMgr_SelectingVolumeManager::Overlaps (const SelectMgr_Vec3& theBoxMin,
                                                             const SelectMgr_Vec3& theBoxMax,
                                                             Standard_Boolean*     theInside) const
{
  if (myActiveSelectionType == Unknown)
    return Standard_False;

  return mySelectingVolumes[myActiveSelectionType / 2]->Overlaps (theBoxMin, theBoxMax, theInside);
}

//=======================================================================
// function : Overlaps
// purpose  : Intersection test between defined volume and given point
//=======================================================================
Standard_Boolean SelectMgr_SelectingVolumeManager::Overlaps (const gp_Pnt& thePnt,
                                                             SelectBasics_PickResult& thePickResult) const
{
  if (myActiveSelectionType == Unknown)
    return Standard_False;

  return mySelectingVolumes[myActiveSelectionType / 2]->Overlaps (thePnt, myViewClipRange, thePickResult);
}

//=======================================================================
// function : Overlaps
// purpose  : Intersection test between defined volume and given point
//=======================================================================
Standard_Boolean SelectMgr_SelectingVolumeManager::Overlaps (const gp_Pnt& thePnt) const
{
  if (myActiveSelectionType == Unknown)
    return Standard_False;

  return mySelectingVolumes[myActiveSelectionType / 2]->Overlaps (thePnt);
}

//=======================================================================
// function : Overlaps
// purpose  : SAT intersection test between defined volume and given
//            ordered set of points, representing line segments. The test
//            may be considered of interior part or boundary line defined
//            by segments depending on given sensitivity type
//=======================================================================
Standard_Boolean SelectMgr_SelectingVolumeManager::Overlaps (const Handle(TColgp_HArray1OfPnt)& theArrayOfPnts,
                                                             Standard_Integer theSensType,
                                                             SelectBasics_PickResult& thePickResult) const
{
  if (myActiveSelectionType == Unknown)
    return Standard_False;

  return mySelectingVolumes[myActiveSelectionType / 2]->Overlaps (theArrayOfPnts->Array1(), (Select3D_TypeOfSensitivity)theSensType,
                                                                  myViewClipRange, thePickResult);
}

//=======================================================================
// function : Overlaps
// purpose  : SAT intersection test between defined volume and given
//            ordered set of points, representing line segments. The test
//            may be considered of interior part or boundary line defined
//            by segments depending on given sensitivity type
//=======================================================================
Standard_Boolean SelectMgr_SelectingVolumeManager::Overlaps (const TColgp_Array1OfPnt& theArrayOfPnts,
                                                             Standard_Integer theSensType,
                                                             SelectBasics_PickResult& thePickResult) const
{
  if (myActiveSelectionType == Unknown)
    return Standard_False;

  return mySelectingVolumes[myActiveSelectionType / 2]->Overlaps (theArrayOfPnts, (Select3D_TypeOfSensitivity)theSensType,
                                                                  myViewClipRange, thePickResult);
}

//=======================================================================
// function : Overlaps
// purpose  : Checks if line segment overlaps selecting volume
//=======================================================================
Standard_Boolean SelectMgr_SelectingVolumeManager::Overlaps (const gp_Pnt& thePt1,
                                                             const gp_Pnt& thePt2,
                                                             SelectBasics_PickResult& thePickResult) const
{
  if (myActiveSelectionType == Unknown)
    return Standard_False;

  return mySelectingVolumes[myActiveSelectionType / 2]->Overlaps (thePt1, thePt2, myViewClipRange, thePickResult);
}

//=======================================================================
// function : Overlaps
// purpose  : SAT intersection test between defined volume and given
//            triangle. The test may be considered of interior part or
//            boundary line defined by triangle vertices depending on
//            given sensitivity type
//=======================================================================
Standard_Boolean SelectMgr_SelectingVolumeManager::Overlaps (const gp_Pnt& thePt1,
                                                             const gp_Pnt& thePt2,
                                                             const gp_Pnt& thePt3,
                                                             Standard_Integer theSensType,
                                                             SelectBasics_PickResult& thePickResult) const
{
  if (myActiveSelectionType == Unknown)
    return Standard_False;

  return mySelectingVolumes[myActiveSelectionType / 2]->Overlaps (thePt1, thePt2, thePt3, (Select3D_TypeOfSensitivity)theSensType,
                                                                  myViewClipRange, thePickResult);
}

//=======================================================================
// function : DistToGeometryCenter
// purpose  : Measures distance between 3d projection of user-picked
//            screen point and given point theCOG
//=======================================================================
Standard_Real SelectMgr_SelectingVolumeManager::DistToGeometryCenter (const gp_Pnt& theCOG) const
{
  if (myActiveSelectionType == Unknown)
    return Standard_False;

  return mySelectingVolumes[myActiveSelectionType / 2]->DistToGeometryCenter (theCOG);
}

// =======================================================================
// function : DetectedPoint
// purpose  : Calculates the point on a view ray that was detected during
//            the run of selection algo by given depth. Is valid for point
//            selection only
// =======================================================================
gp_Pnt SelectMgr_SelectingVolumeManager::DetectedPoint (const Standard_Real theDepth) const
{
  if (myActiveSelectionType != Point)
  {
    throw Standard_ProgramError("SelectMgr_SelectingVolumeManager::DetectedPoint() should be called only for Point selection type");
  }

  return mySelectingVolumes[Frustum]->DetectedPoint (theDepth);
}

//=======================================================================
// function : AllowOverlapDetection
// purpose  : If theIsToAllow is false, only fully included sensitives will
//            be detected, otherwise the algorithm will mark both included
//            and overlapped entities as matched
//=======================================================================
void SelectMgr_SelectingVolumeManager::AllowOverlapDetection (const Standard_Boolean theIsToAllow)
{
  myToAllowOverlap = theIsToAllow;
}

//=======================================================================
// function : IsOverlapAllowed
// purpose  :
//=======================================================================
Standard_Boolean SelectMgr_SelectingVolumeManager::IsOverlapAllowed() const
{
  return myActiveSelectionType != Box || myToAllowOverlap;
}

//=======================================================================
// function : GetVertices
// purpose  :
//=======================================================================
const gp_Pnt* SelectMgr_SelectingVolumeManager::GetVertices() const
{
  if (myActiveSelectionType == Polyline)
    return NULL;

  const SelectMgr_RectangularFrustum* aFr =
    reinterpret_cast<const SelectMgr_RectangularFrustum*> (mySelectingVolumes[myActiveSelectionType / 2].get());
  return aFr->GetVertices();
}

//=======================================================================
// function : GetNearPickedPnt
// purpose  :
//=======================================================================
gp_Pnt SelectMgr_SelectingVolumeManager::GetNearPickedPnt() const
{
  if (myActiveSelectionType == Polyline)
    return gp_Pnt();

   const SelectMgr_RectangularFrustum* aFr =
     reinterpret_cast<const SelectMgr_RectangularFrustum*> (mySelectingVolumes[myActiveSelectionType / 2].get());
  return aFr->GetNearPnt();
}

//=======================================================================
// function : GetFarPickedPnt
// purpose  :
//=======================================================================
gp_Pnt SelectMgr_SelectingVolumeManager::GetFarPickedPnt() const
{
  if (myActiveSelectionType == Polyline)
    return gp_Pnt();

   const SelectMgr_RectangularFrustum* aFr =
     reinterpret_cast<const SelectMgr_RectangularFrustum*> (mySelectingVolumes[myActiveSelectionType / 2].get());
  return aFr->GetFarPnt();
}

//=======================================================================
// function : SetViewClipping
// purpose  :
//=======================================================================
void SelectMgr_SelectingVolumeManager::SetViewClipping (const Handle(Graphic3d_SequenceOfHClipPlane)& theViewPlanes,
                                                        const Handle(Graphic3d_SequenceOfHClipPlane)& theObjPlanes)
{
  myViewClipPlanes   = theViewPlanes;
  myObjectClipPlanes = theObjPlanes;
  if (myActiveSelectionType != Point)
    return;

  const SelectMgr_RectangularFrustum* aFrustum = reinterpret_cast<const SelectMgr_RectangularFrustum*>(mySelectingVolumes[Frustum].get());
  myViewClipRange.SetVoid();
  if (!theViewPlanes.IsNull()
   && !theViewPlanes->IsEmpty())
  {
    myViewClipRange.AddClippingPlanes (*theViewPlanes, gp_Ax1 (aFrustum->GetNearPnt(), aFrustum->GetViewRayDirection()));
  }
  if (!theObjPlanes.IsNull()
   && !theObjPlanes->IsEmpty())
  {
    myViewClipRange.AddClippingPlanes (*theObjPlanes, gp_Ax1 (aFrustum->GetNearPnt(), aFrustum->GetViewRayDirection()));
  }
}

//=======================================================================
// function : SetViewClipping
// purpose  :
//=======================================================================
void SelectMgr_SelectingVolumeManager::SetViewClipping (const SelectMgr_SelectingVolumeManager& theOther)
{
  myViewClipPlanes   = theOther.myViewClipPlanes;
  myObjectClipPlanes = theOther.myObjectClipPlanes;
  myViewClipRange    = theOther.myViewClipRange;
}