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diff --git a/applications/rview/rviewOSection.hh b/applications/rview/rviewOSection.hh
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+/*
+* This file is part of rasdaman community.
+*
+* Rasdaman community is free software: you can redistribute it and/or modify
+* it under the terms of the GNU General Public License as published by
+* the Free Software Foundation, either version 3 of the License, or
+* (at your option) any later version.
+*
+* Rasdaman community is distributed in the hope that it will be useful,
+* but WITHOUT ANY WARRANTY; without even the implied warranty of
+* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+* GNU General Public License for more details.
+*
+* You should have received a copy of the GNU General Public License
+* along with rasdaman community.  If not, see <http://www.gnu.org/licenses/>.
+*
+* Copyright 2003, 2004, 2005, 2006, 2007, 2008, 2009 Peter Baumann /
+rasdaman GmbH.
+*
+* For more information please see <http://www.rasdaman.org>
+* or contact Peter Baumann via <baumann@rasdaman.com>.
+/
+
+/**
+ *  PURPOSE:
+ *
+ *  A viewer for orthosections in 3D images (bias on medical images)
+ *
+ *	COMMENTS:
+ *			None
+ */
+
+#ifndef _RVIEW_OSECTION_H_
+#define _RVIEW_OSECTION_H_
+
+#include "rviewDModes.hh"
+
+
+/*
+ *  Abstract base class for orthosection views of 3D image volumes
+ *  Client classes implement the data sources (everything in memory
+ *  vs. loading slices on demand)
+ */
+ 
+class rviewOSectionImage : public rviewRenderImage
+{
+  public:
+  
+  rviewOSectionImage(mdd_frame *mf, unsigned int flags=0);
+  virtual ~rviewOSectionImage(void);
+
+  virtual void label(void);
+  virtual int process(wxObject &obj, wxEvent &evt);
+  virtual void OnSize(int w, int h);
+  virtual int openViewer(void);
+
+  virtual const char *getFrameName(void) const;
+  virtual rviewFrameType getFrameType(void) const;
+  virtual int getViewerType(void) const;
+  virtual void childMouseEvent(wxWindow *child, wxMouseEvent &mev);
+
+  // new virtual methods
+  virtual bool sectionValid(unsigned int num) = 0;
+  virtual const r_Minterval &getSectionDomain(unsigned int num) = 0;
+  virtual const r_Minterval &getSectionParent(unsigned int num) = 0;
+  virtual char *getSectionArray(unsigned int num) = 0;
+  virtual long getSectionProjection(unsigned int num) = 0;
+  virtual r_Ref<r_GMarray> &getCsmapArray(void) = 0;
+    
+  // internal structures
+  struct section_map_s;
+  struct section_part_s;
+  typedef struct section_map_s section_map_t;
+  typedef struct section_part_s section_part_t;
+
+  // constants
+  // additional height of control panel
+  static const int osection_ctrly;
+  // width of righthand column (next to sliders)
+  static const int osection_rcwidth;
+  // height of slider bar
+  static const int osection_sheight;
+  // Checkbox dimensions
+  static const int osection_chkwidth;
+  static const int osection_chkheight;
+  // Text widget dimensions
+  static const int osection_twidth;
+  static const int osection_theight;
+  // Button dimensions
+  static const int osection_bwidth;
+  static const int osection_bheight;
+
+
+  protected:
+
+  virtual char *initMode(void);
+  virtual char *setupEnvironment(int w, int h);
+  virtual bool doUpdate(int updateFlags);
+  virtual void fillBuffer(void);
+
+  // view management
+  virtual int saveView(FILE *fp);
+  virtual int readView(const char *key, const char *value);
+  virtual void loadViewFinished(void);
+
+  // create the currently relevant spatial domain for a slice
+  int makeMinterval(unsigned int num, r_Minterval &dom);
+  // partition sections into quadrants for rendering
+  int performPartition(void);
+  // update a slice
+  void updateSlice(unsigned int num, long value, bool useDummy=TRUE);
+  // refresh all slices that need to (or all, if force=TRUE)
+  void refreshSlices(bool force=FALSE);
+
+  // load the correct slices from the database if necessary
+  virtual int ensureSections(void) = 0;
+  // create a dummy slice (empty)
+  virtual int createDummySection(unsigned int num, const r_Minterval *dom=NULL) = 0;
+  // flush out all slices
+  virtual void flushSlices(void) = 0;
+  
+  void setOId(const r_OId &oid);
+
+  //rviewSlider **sliders;
+  rviewSpecialSlider **sliders;
+  rviewText **sltexts;
+  rviewCheckBox *boundingBox;
+  rviewText *thickText;
+
+  // intersection point of the (3) sections
+  r_Point intersection;
+  // thickness of a section (1)
+  int thickness;
+  // mapping sections to dimensions
+  struct section_map_s *secmap;
+  // mapping partitions (section quadrants) to sections and 3D space
+  struct section_part_s *partition;
+  unsigned int numPartitions;
+  bool doBoundingBox;
+  // currently selected section
+  unsigned int currentSection;
+  // static members
+  static const unsigned int numSections;
+  static const char *sliderLabels[];
+
+  // view parameters
+  static const char *view_Thickness;
+  static const char *view_MidPoint;
+  static const char *view_UseBBox;
+};
+
+
+
+
+/*
+ *  Orthosection class where slices are loaded on demand from the database.
+ */
+ 
+class rviewOSectionPartImage : public rviewOSectionImage
+{
+  public:
+  rviewOSectionPartImage(mdd_frame *mf, const char *cname, const r_OId &oid, unsigned int flags=0);
+  ~rviewOSectionPartImage(void);
+
+  virtual void label(void);
+  virtual int process(wxObject &obj, wxEvent &evt);
+  virtual void OnSize(int w, int h);
+  virtual void childMouseEvent(wxWindow *child, wxMouseEvent &mev);
+
+  virtual bool sectionValid(unsigned int num);
+  virtual const r_Minterval &getSectionDomain(unsigned int num);
+  virtual const r_Minterval &getSectionParent(unsigned int num);
+  virtual char *getSectionArray(unsigned int num);
+  virtual long getSectionProjection(unsigned int num);
+  virtual r_Ref<r_GMarray> &getCsmapArray(void);
+    
+  // create a new instance.
+  static rviewOSectionPartImage *createViewer(const char *collname, const double *loid=NULL);
+
+  struct section_desc_s;
+  typedef struct section_desc_s section_desc_t;
+
+
+  protected:
+  virtual int ensureSections(void);
+  virtual int createDummySection(unsigned int num, const r_Minterval *dom=NULL);
+  virtual void flushSlices(void);
+
+  rviewCheckBox *fireDragRelease;
+  rviewButton *fireButton;
+
+  // the sections (slices through the cube; all technically 3D)
+  struct section_desc_s *sections;
+  r_OId objOId;
+  DynamicString collName;
+  // dummy MDD used for colourspace configuration
+  r_Ref<r_GMarray> csDummy;
+};
+
+
+
+
+
+/*
+ *  Orthosection class where the entire object is in client memory
+ */
+ 
+class rviewOSectionFullImage : public rviewOSectionImage
+{
+  public:
+  rviewOSectionFullImage(mdd_frame *mf, unsigned int flags = 0);
+  ~rviewOSectionFullImage(void);
+  
+  virtual bool sectionValid(unsigned int num);
+  virtual const r_Minterval &getSectionDomain(unsigned int num);
+  virtual const r_Minterval &getSectionParent(unsigned int num);
+  virtual char *getSectionArray(unsigned int num);
+  virtual long getSectionProjection(unsigned int num);
+  virtual r_Ref<r_GMarray> &getCsmapArray(void);
+  
+  
+  protected:
+  virtual int ensureSections(void);
+  virtual int createDummySection(unsigned int num, const r_Minterval *dom=NULL);
+  virtual void flushSlices(void);
+  
+  r_Minterval *sections;
+};
+
+#endif