diff --git a/Core/Code/DataManagement/mitkDisplayGeometry.cpp b/Core/Code/DataManagement/mitkDisplayGeometry.cpp index c7a302b325..b2e0939be1 100644 --- a/Core/Code/DataManagement/mitkDisplayGeometry.cpp +++ b/Core/Code/DataManagement/mitkDisplayGeometry.cpp @@ -1,625 +1,624 @@ /*========================================================================= Program: Medical Imaging & Interaction Toolkit Language: C++ Date: $Date$ Version: $Revision$ Copyright (c) German Cancer Research Center, Division of Medical and Biological Informatics. All rights reserved. See MITKCopyright.txt or http://www.mitk.org/copyright.html for details. This software is distributed WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the above copyright notices for more information. =========================================================================*/ #include "mitkDisplayGeometry.h" mitk::AffineGeometryFrame3D::Pointer mitk::DisplayGeometry::Clone() const { itkExceptionMacro(<<"calling mitk::DisplayGeometry::Clone does not make much sense."); } bool mitk::DisplayGeometry::IsValid() const { return m_Valid && m_WorldGeometry.IsNotNull() && m_WorldGeometry->IsValid(); } unsigned long mitk::DisplayGeometry::GetMTime() const { if((m_WorldGeometry.IsNotNull()) && (Geometry2D::GetMTime() < m_WorldGeometry->GetMTime())) { Modified(); } return Geometry2D::GetMTime(); } const mitk::TimeBounds& mitk::DisplayGeometry::GetTimeBounds() const { if(m_WorldGeometry.IsNull()) { return m_TimeBounds; } return m_WorldGeometry->GetTimeBounds(); } // size definition methods void mitk::DisplayGeometry::SetWorldGeometry(const Geometry2D* aWorldGeometry) { m_WorldGeometry = aWorldGeometry; Modified(); } bool mitk::DisplayGeometry::SetOriginInMM(const Vector2D& origin_mm) { m_OriginInMM = origin_mm; WorldToDisplay(m_OriginInMM, m_OriginInDisplayUnits); Modified(); return !this->RefitVisibleRect(); } mitk::Vector2D mitk::DisplayGeometry::GetOriginInMM() const { return m_OriginInMM; } mitk::Vector2D mitk::DisplayGeometry::GetOriginInDisplayUnits() const { return m_OriginInDisplayUnits; } void mitk::DisplayGeometry::SetSizeInDisplayUnits(unsigned int width, unsigned int height, bool keepDisplayedRegion) { Vector2D oldSizeInMM( m_SizeInMM ); Point2D oldCenterInMM; if(keepDisplayedRegion) { Point2D centerInDisplayUnits; centerInDisplayUnits[0] = m_SizeInDisplayUnits[0]*0.5; centerInDisplayUnits[1] = m_SizeInDisplayUnits[1]*0.5; DisplayToWorld(centerInDisplayUnits, oldCenterInMM); } m_SizeInDisplayUnits[0]=width; m_SizeInDisplayUnits[1]=height; if(m_SizeInDisplayUnits[0] <= 0) m_SizeInDisplayUnits[0] = 1; if(m_SizeInDisplayUnits[1] <= 0) m_SizeInDisplayUnits[1] = 1; DisplayToWorld(m_SizeInDisplayUnits, m_SizeInMM); if(keepDisplayedRegion) { Point2D positionOfOldCenterInCurrentDisplayUnits; WorldToDisplay(oldCenterInMM, positionOfOldCenterInCurrentDisplayUnits); Point2D currentNewCenterInDisplayUnits; currentNewCenterInDisplayUnits[0] = m_SizeInDisplayUnits[0]*0.5; currentNewCenterInDisplayUnits[1] = m_SizeInDisplayUnits[1]*0.5; Vector2D shift; shift=positionOfOldCenterInCurrentDisplayUnits.GetVectorFromOrigin()-currentNewCenterInDisplayUnits; MoveBy(shift); Zoom(m_SizeInMM.GetNorm()/oldSizeInMM.GetNorm(), currentNewCenterInDisplayUnits); } Modified(); } mitk::Vector2D mitk::DisplayGeometry::GetSizeInDisplayUnits() const { return m_SizeInDisplayUnits; } mitk::Vector2D mitk::DisplayGeometry::GetSizeInMM() const { return m_SizeInMM; } unsigned int mitk::DisplayGeometry::GetDisplayWidth() const { assert(m_SizeInDisplayUnits[0] >= 0); return (unsigned int)m_SizeInDisplayUnits[0]; } unsigned int mitk::DisplayGeometry::GetDisplayHeight() const { assert(m_SizeInDisplayUnits[1] >= 0); return (unsigned int)m_SizeInDisplayUnits[1]; } // zooming, panning, restriction of both void mitk::DisplayGeometry::SetConstrainZoomingAndPanning(bool constrain) { m_ConstrainZoomingAndPanning = constrain; if (m_ConstrainZoomingAndPanning) { this->RefitVisibleRect(); } } bool mitk::DisplayGeometry::GetConstrainZommingAndPanning() const { return m_ConstrainZoomingAndPanning; } bool mitk::DisplayGeometry::SetScaleFactor(ScalarType mmPerDisplayUnit) { if(mmPerDisplayUnit<0.0001) { mmPerDisplayUnit=0.0001; } m_ScaleFactorMMPerDisplayUnit = mmPerDisplayUnit; assert(m_ScaleFactorMMPerDisplayUnit < ScalarTypeNumericTraits::infinity()); DisplayToWorld(m_SizeInDisplayUnits, m_SizeInMM); return !this->RefitVisibleRect(); } mitk::ScalarType mitk::DisplayGeometry::GetScaleFactorMMPerDisplayUnit() const { return m_ScaleFactorMMPerDisplayUnit; } // Zooms with a factor (1.0=identity) around the specified center in display units bool mitk::DisplayGeometry::Zoom(ScalarType factor, const Point2D& centerInDisplayUnits) { assert(factor > 0); if ( SetScaleFactor(m_ScaleFactorMMPerDisplayUnit/factor) ) { return SetOriginInMM(m_OriginInMM-centerInDisplayUnits.GetVectorFromOrigin()*(1-factor)*m_ScaleFactorMMPerDisplayUnit); } else { return false; } } // Zooms with a factor (1.0=identity) around the specified center, but tries (if its within view contraints) to match the center in display units with the center in world coordinates. bool mitk::DisplayGeometry::ZoomWithFixedWorldCoordinates(ScalarType factor, const Point2D& focusDisplayUnits, const Point2D& focusUnitsInMM ) { assert(factor > 0); SetScaleFactor(m_ScaleFactorMMPerDisplayUnit/factor); SetOriginInMM(focusUnitsInMM.GetVectorFromOrigin()-focusDisplayUnits.GetVectorFromOrigin()*m_ScaleFactorMMPerDisplayUnit); return true; } bool mitk::DisplayGeometry::MoveBy(const Vector2D& shiftInDisplayUnits) { SetOriginInMM(m_OriginInMM+shiftInDisplayUnits*m_ScaleFactorMMPerDisplayUnit); Modified(); return !this->RefitVisibleRect(); } void mitk::DisplayGeometry::Fit() { if((m_WorldGeometry.IsNull()) || (m_WorldGeometry->IsValid() == false)) return; /// \FIXME: try to remove all the casts int width=(int)m_SizeInDisplayUnits[0]; int height=(int)m_SizeInDisplayUnits[1]; ScalarType w = width; ScalarType h = height; const ScalarType& widthInMM = m_WorldGeometry->GetParametricExtentInMM(0); const ScalarType& heightInMM = m_WorldGeometry->GetParametricExtentInMM(1); ScalarType aspRatio=((ScalarType)widthInMM)/heightInMM; ScalarType x = (ScalarType)w/widthInMM; ScalarType y = (ScalarType)h/heightInMM; if (x > y) { w = (int) (aspRatio*h); } else { h = (int) (w/aspRatio); } if(w>0) { SetScaleFactor(widthInMM/w); } Vector2D origin_display; origin_display[0]=-(width-w)/2.0; origin_display[1]=-(height-h)/2.0; SetOriginInMM(origin_display*m_ScaleFactorMMPerDisplayUnit); this->RefitVisibleRect(); Modified(); } // conversion methods void mitk::DisplayGeometry::DisplayToWorld(const Point2D &pt_display, Point2D &pt_mm) const { pt_mm[0]=m_ScaleFactorMMPerDisplayUnit*pt_display[0]+m_OriginInMM[0]; pt_mm[1]=m_ScaleFactorMMPerDisplayUnit*pt_display[1]+m_OriginInMM[1]; } void mitk::DisplayGeometry::WorldToDisplay(const Point2D &pt_mm, Point2D &pt_display) const { pt_display[0]=(pt_mm[0]-m_OriginInMM[0])*(1.0/m_ScaleFactorMMPerDisplayUnit); pt_display[1]=(pt_mm[1]-m_OriginInMM[1])*(1.0/m_ScaleFactorMMPerDisplayUnit); } void mitk::DisplayGeometry::DisplayToWorld(const Vector2D &vec_display, Vector2D &vec_mm) const { vec_mm=vec_display*m_ScaleFactorMMPerDisplayUnit; } void mitk::DisplayGeometry::WorldToDisplay(const Vector2D &vec_mm, Vector2D &vec_display) const { vec_display=vec_mm*(1.0/m_ScaleFactorMMPerDisplayUnit); } void mitk::DisplayGeometry::ULDisplayToMM(const Point2D &pt_ULdisplay, Point2D &pt_mm) const { ULDisplayToDisplay(pt_ULdisplay, pt_mm); DisplayToWorld(pt_mm, pt_mm); } void mitk::DisplayGeometry::MMToULDisplay(const Point2D &pt_mm, Point2D &pt_ULdisplay) const { WorldToDisplay(pt_mm, pt_ULdisplay); DisplayToULDisplay(pt_ULdisplay, pt_ULdisplay); } void mitk::DisplayGeometry::ULDisplayToMM(const Vector2D &vec_ULdisplay, Vector2D &vec_mm) const { ULDisplayToDisplay(vec_ULdisplay, vec_mm); DisplayToWorld(vec_mm, vec_mm); } void mitk::DisplayGeometry::MMToULDisplay(const Vector2D &vec_mm, Vector2D &vec_ULdisplay) const { WorldToDisplay(vec_mm, vec_ULdisplay); DisplayToULDisplay(vec_ULdisplay, vec_ULdisplay); } void mitk::DisplayGeometry::ULDisplayToDisplay(const Point2D &pt_ULdisplay, Point2D &pt_display) const { pt_display[0]=pt_ULdisplay[0]; pt_display[1]=GetDisplayHeight()-pt_ULdisplay[1]; } void mitk::DisplayGeometry::DisplayToULDisplay(const Point2D &pt_display, Point2D &pt_ULdisplay) const { ULDisplayToDisplay(pt_display, pt_ULdisplay); } void mitk::DisplayGeometry::ULDisplayToDisplay(const Vector2D &vec_ULdisplay, Vector2D &vec_display) const { vec_display[0]= vec_ULdisplay[0]; vec_display[1]=-vec_ULdisplay[1]; } void mitk::DisplayGeometry::DisplayToULDisplay(const Vector2D &vec_display, Vector2D &vec_ULdisplay) const { ULDisplayToDisplay(vec_display, vec_ULdisplay); } bool mitk::DisplayGeometry::Project(const Point3D &pt3d_mm, Point3D &projectedPt3d_mm) const { if(m_WorldGeometry.IsNotNull()) { return m_WorldGeometry->Project(pt3d_mm, projectedPt3d_mm); } else { return false; } } bool mitk::DisplayGeometry::Project(const Point3D & atPt3d_mm, const Vector3D &vec3d_mm, Vector3D &projectedVec3d_mm) const { if(m_WorldGeometry.IsNotNull()) { return m_WorldGeometry->Project(atPt3d_mm, vec3d_mm, projectedVec3d_mm); } else { return false; } } bool mitk::DisplayGeometry::Map(const Point3D &pt3d_mm, Point2D &pt2d_mm) const { if(m_WorldGeometry.IsNotNull()) { return m_WorldGeometry->Map(pt3d_mm, pt2d_mm); } else { return false; } } void mitk::DisplayGeometry::Map(const Point2D &pt2d_mm, Point3D &pt3d_mm) const { if(m_WorldGeometry.IsNull()) return; m_WorldGeometry->Map(pt2d_mm, pt3d_mm); } bool mitk::DisplayGeometry::Map(const Point3D & atPt3d_mm, const Vector3D &vec3d_mm, Vector2D &vec2d_mm) const { if(m_WorldGeometry.IsNotNull()) { return m_WorldGeometry->Map(atPt3d_mm, vec3d_mm, vec2d_mm); } else { return false; } } void mitk::DisplayGeometry::Map(const Point2D & atPt2d_mm, const Vector2D &vec2d_mm, Vector3D &vec3d_mm) const { if(m_WorldGeometry.IsNull()) return; m_WorldGeometry->Map(atPt2d_mm, vec2d_mm, vec3d_mm); } // protected methods mitk::DisplayGeometry::DisplayGeometry() :m_ScaleFactorMMPerDisplayUnit(1.0) ,m_WorldGeometry(NULL) ,m_ConstrainZoomingAndPanning(true) ,m_MaxWorldViewPercentage(1.0) ,m_MinWorldViewPercentage(0.1) { m_OriginInMM.Fill(0.0); m_OriginInDisplayUnits.Fill(0.0); m_SizeInMM.Fill(1.0); m_SizeInDisplayUnits.Fill(10.0); } mitk::DisplayGeometry::~DisplayGeometry() { } bool mitk::DisplayGeometry::RefitVisibleRect() { // do nothing if not asked to if (!m_ConstrainZoomingAndPanning) return false; // don't allow recursion (need to be fixed, singleton) static bool inRecalculate = false; if (inRecalculate) return false; inRecalculate = true; // rename some basic measures of the current viewport and world geometry (MM = milimeters Px = Pixels = display units) float displayXMM = m_OriginInMM[0]; float displayYMM = m_OriginInMM[1]; float displayWidthPx = m_SizeInDisplayUnits[0]; float displayHeightPx = m_SizeInDisplayUnits[1]; float displayWidthMM = m_SizeInDisplayUnits[0] * m_ScaleFactorMMPerDisplayUnit; float displayHeightMM = m_SizeInDisplayUnits[1] * m_ScaleFactorMMPerDisplayUnit; float worldWidthMM = m_WorldGeometry->GetParametricExtentInMM(0); float worldHeightMM = m_WorldGeometry->GetParametricExtentInMM(1); // reserve variables for the correction logic to save a corrected origin and zoom factor Vector2D newOrigin = m_OriginInMM; bool correctPanning = false; float newScaleFactor = m_ScaleFactorMMPerDisplayUnit; bool correctZooming = false; // start of the correction logic // zoom to big means: // at a given percentage of the world's width/height should be visible. Otherwise // the whole screen could show only one pixel // // zoom to small means: // zooming out should be limited at the point where the smaller of the world's sides is completely visible bool zoomXtooSmall = displayWidthPx * m_ScaleFactorMMPerDisplayUnit > m_MaxWorldViewPercentage * worldWidthMM; bool zoomXtooBig = displayWidthPx * m_ScaleFactorMMPerDisplayUnit < m_MinWorldViewPercentage * worldWidthMM; bool zoomYtooSmall = displayHeightPx * m_ScaleFactorMMPerDisplayUnit > m_MaxWorldViewPercentage * worldHeightMM; bool zoomYtooBig = displayHeightPx * m_ScaleFactorMMPerDisplayUnit < m_MinWorldViewPercentage * worldHeightMM; // constrain zooming in both direction if ( zoomXtooBig && zoomYtooBig) { double fx = worldWidthMM * m_MinWorldViewPercentage / displayWidthPx; double fy = worldHeightMM * m_MinWorldViewPercentage / displayHeightPx; newScaleFactor = fx < fy ? fx : fy; correctZooming = true; } // constrain zooming in x direction else if ( zoomXtooBig ) { newScaleFactor = worldWidthMM * m_MinWorldViewPercentage / displayWidthPx; correctZooming = true; } // constrain zooming in y direction else if ( zoomYtooBig ) { newScaleFactor = worldHeightMM * m_MinWorldViewPercentage / displayHeightPx; correctZooming = true; } // constrain zooming out // we stop zooming out at these situations: // // *** display // --- image // // ********************** // * * x side maxed out // * * // *--------------------* // *| |* // *| |* // *--------------------* // * * // * * // * * // ********************** // // ********************** // * |------| * y side maxed out // * | | * // * | | * // * | | * // * | | * // * | | * // * | | * // * | | * // * |------| * // ********************** // // In both situations we center the not-maxed out direction // if ( zoomXtooSmall && zoomYtooSmall ) { // determine and set the bigger scale factor float fx = worldWidthMM * m_MaxWorldViewPercentage / displayWidthPx; float fy = worldHeightMM * m_MaxWorldViewPercentage / displayHeightPx; newScaleFactor = fx > fy ? fx : fy; correctZooming = true; } // actually execute correction if (correctZooming) { SetScaleFactor(newScaleFactor); } displayWidthMM = m_SizeInDisplayUnits[0] * m_ScaleFactorMMPerDisplayUnit; displayHeightMM = m_SizeInDisplayUnits[1] * m_ScaleFactorMMPerDisplayUnit; // constrain panning if(worldWidthMM center x newOrigin[0] = (worldWidthMM - displayWidthMM) / 2.0; correctPanning = true; } else { // make sure left display border inside our world if (displayXMM < 0) { newOrigin[0] = 0; correctPanning = true; } // make sure right display border inside our world else if (displayXMM + displayWidthMM > worldWidthMM) { newOrigin[0] = worldWidthMM - displayWidthMM; correctPanning = true; } } if (worldHeightMM center y newOrigin[1] = (worldHeightMM - displayHeightMM) / 2.0; correctPanning = true; } else { // make sure top display border inside our world if (displayYMM + displayHeightMM > worldHeightMM) { newOrigin[1] = worldHeightMM - displayHeightMM; correctPanning = true; } // make sure bottom display border inside our world else if (displayYMM < 0) { newOrigin[1] = 0; correctPanning = true; } } - if (correctPanning) { SetOriginInMM( newOrigin ); } + inRecalculate = false; + if ( correctPanning || correctZooming ) { Modified(); } - inRecalculate = false; - // return true if any correction has been made return correctPanning || correctZooming; } void mitk::DisplayGeometry::PrintSelf(std::ostream& os, itk::Indent indent) const { if(m_WorldGeometry.IsNull()) { os << indent << " WorldGeometry: " << "NULL" << std::endl; } else { m_WorldGeometry->Print(os, indent); os << indent << " OriginInMM: " << m_OriginInMM << std::endl; os << indent << " OriginInDisplayUnits: " << m_OriginInDisplayUnits << std::endl; os << indent << " SizeInMM: " << m_SizeInMM << std::endl; os << indent << " SizeInDisplayUnits: " << m_SizeInDisplayUnits << std::endl; os << indent << " ScaleFactorMMPerDisplayUni: " << m_ScaleFactorMMPerDisplayUnit << std::endl; } Superclass::PrintSelf(os,indent); }