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168c27c69e
Add new interfaces GetEyePosition(), GetClippingRange(), GetAspectRatio() to IVTK_IView Add ivtkviewparams command to print current parameters of view Add ivtkcamera comand to print current camera parameters or manages camera parameters (set ortho or persp projection)
257 lines
8.3 KiB
C++
257 lines
8.3 KiB
C++
// Created on: 2011-10-14
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// Created by: Roman KOZLOV
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// Copyright (c) 2011-2014 OPEN CASCADE SAS
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//
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// This file is part of Open CASCADE Technology software library.
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//
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// This library is free software; you can redistribute it and/or modify it under
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// the terms of the GNU Lesser General Public License version 2.1 as published
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// by the Free Software Foundation, with special exception defined in the file
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// OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
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// distribution for complete text of the license and disclaimer of any warranty.
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//
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// Alternatively, this file may be used under the terms of Open CASCADE
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// commercial license or contractual agreement.
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#include <IVtkVTK_View.hxx>
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// prevent disabling some MSVC warning messages by VTK headers
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#ifdef _MSC_VER
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#pragma warning(push)
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#endif
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#include <vtkAutoInit.h>
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#include <vtkCamera.h>
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#include <vtkRenderer.h>
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#include <vtkRenderWindow.h>
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#include <vtkTransform.h>
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#ifdef _MSC_VER
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#pragma warning(pop)
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#endif
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IMPLEMENT_STANDARD_RTTIEXT(IVtkVTK_View,IVtk_IView)
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// Initialization of VTK object factories.
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// Since VTK 6 the factory methods require "auto-initialization" depending on
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// what modules are enabled at VTK configure time.
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// Some defines are needed in order to make the factories work properly.
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#ifdef VTK_OPENGL2_BACKEND
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VTK_MODULE_INIT(vtkRenderingOpenGL2)
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#else
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VTK_MODULE_INIT(vtkRenderingOpenGL)
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#endif
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VTK_MODULE_INIT(vtkInteractionStyle)
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// Handle implementation
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//================================================================
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// Function : Constructor
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// Purpose :
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//================================================================
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IVtkVTK_View::IVtkVTK_View (vtkRenderer* theRenderer)
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: myRenderer (theRenderer)
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{ }
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//================================================================
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// Function : Destructor
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// Purpose :
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//================================================================
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IVtkVTK_View::~IVtkVTK_View()
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{ }
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//================================================================
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// Function : IsPerspective
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// Purpose :
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//================================================================
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bool IVtkVTK_View::IsPerspective() const
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{
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return !myRenderer->GetActiveCamera()->GetParallelProjection();
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}
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//================================================================
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// Function : GetDistance
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// Purpose :
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//================================================================
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double IVtkVTK_View::GetDistance() const
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{
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return myRenderer->GetActiveCamera()->GetDistance();
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}
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//================================================================
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// Function : GetEyePosition
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetEyePosition (double& theX, double& theY, double& theZ) const
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{
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myRenderer->GetActiveCamera()->GetPosition (theX, theY, theZ);
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}
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//================================================================
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// Function : GetPosition
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetPosition (double& theX, double& theY, double& theZ) const
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{
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myRenderer->GetActiveCamera()->GetFocalPoint (theX, theY, theZ);
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}
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//================================================================
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// Function : GetViewUp
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetViewUp (double& theDx, double& theDy, double& theDz) const
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{
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myRenderer->GetActiveCamera()->OrthogonalizeViewUp();
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myRenderer->GetActiveCamera()->GetViewUp (theDx, theDy, theDz);
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}
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//================================================================
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// Function : GetDirectionOfProjection
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetDirectionOfProjection (double& theDx,
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double& theDy,
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double& theDz) const
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{
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myRenderer->GetActiveCamera()->GetDirectionOfProjection (theDx, theDy, theDz);
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theDx = -theDx;
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theDy = -theDy;
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theDz = -theDz;
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}
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//================================================================
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// Function : GetScale
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetScale (double& theX, double& theY, double& theZ) const
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{
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double aScale[3];
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myRenderer->GetActiveCamera()->GetViewTransformObject()->GetScale (aScale);
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theX = aScale[0];
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theY = aScale[1];
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theZ = aScale[2];
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}
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//================================================================
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// Function : GetParallelScale
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// Purpose :
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//================================================================
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double IVtkVTK_View::GetParallelScale() const
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{
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return myRenderer->GetActiveCamera()->GetParallelScale();
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}
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//================================================================
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// Function : GetViewAngle
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// Purpose :
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//================================================================
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double IVtkVTK_View::GetViewAngle() const
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{
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return myRenderer->GetActiveCamera()->GetViewAngle();
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}
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//================================================================
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// Function : GetAspectRatio
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// Purpose :
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//================================================================
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double IVtkVTK_View::GetAspectRatio() const
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{
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return myRenderer->GetTiledAspectRatio();
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}
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//================================================================
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// Function : GetClippingRange
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetClippingRange (double& theZNear, double& theZFar) const
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{
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myRenderer->GetActiveCamera()->GetClippingRange (theZNear, theZFar);
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}
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//================================================================
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// Function : GetViewCenter
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetViewCenter (double& theX, double& theY) const
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{
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double* aCenter = myRenderer->GetCenter();
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theX = aCenter[0];
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theY = aCenter[1];
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}
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//================================================================
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// Function : DisplayToWorld
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// Purpose :
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//================================================================
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bool IVtkVTK_View::DisplayToWorld (const gp_XY& theDisplayPnt, gp_XYZ& theWorldPnt) const
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{
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// Convert the selection point into world coordinates.
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myRenderer->SetDisplayPoint (theDisplayPnt.X(), theDisplayPnt.Y(), 0.0);
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myRenderer->DisplayToWorld();
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double* const aCoords = myRenderer->GetWorldPoint();
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if (aCoords[3] == 0.0) // Point at infinity in homogeneous coordinates
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{
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return false;
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}
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theWorldPnt = gp_XYZ (aCoords[0] / aCoords[3],
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aCoords[1] / aCoords[3], aCoords[2] / aCoords[3]);
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return true;
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}
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//================================================================
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// Function : GetWindowSize
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetWindowSize (int& theX, int& theY) const
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{
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int* aSize = myRenderer->GetRenderWindow()->GetSize();
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theX = aSize[0];
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theY = aSize[1];
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}
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//================================================================
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// Function : GetCamera
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetCamera (Graphic3d_Mat4d& theProj,
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Graphic3d_Mat4d& theOrient,
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Standard_Boolean& theIsOrtho) const
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{
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theIsOrtho = !IsPerspective();
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vtkMatrix4x4* aCompositeProj =
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myRenderer->GetActiveCamera()->
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GetCompositeProjectionTransformMatrix (myRenderer->GetTiledAspectRatio(),
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0,
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1);
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for (Standard_Integer aRow = 0; aRow < 4; ++aRow)
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{
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for (Standard_Integer aCol = 0; aCol < 4; ++aCol)
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{
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theProj.SetValue (aRow, aCol, aCompositeProj->GetElement (aRow, aCol));
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}
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}
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theOrient.InitIdentity();
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}
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//================================================================
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// Function : GetViewport
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// Purpose :
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//================================================================
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void IVtkVTK_View::GetViewport (Standard_Real& theX,
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Standard_Real& theY,
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Standard_Real& theWidth,
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Standard_Real& theHeight) const
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{
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Standard_Real aViewport[4];
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myRenderer->GetViewport (aViewport);
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theX = aViewport[0];
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theY = aViewport[1];
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theWidth = aViewport[2];
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theHeight = aViewport[3];
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}
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