SoTabPlaneDragger.h

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/*
 *
 *  Copyright (C) 2000 Silicon Graphics, Inc.  All Rights Reserved. 
 *
 *  This library is free software; you can redistribute it and/or
 *  modify it under the terms of the GNU Lesser General Public
 *  License as published by the Free Software Foundation; either
 *  version 2.1 of the License, or (at your option) any later version.
 *
 *  This library 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
 *  Lesser General Public License for more details.
 *
 *  Further, this software is distributed without any warranty that it is
 *  free of the rightful claim of any third person regarding infringement
 *  or the like.  Any license provided herein, whether implied or
 *  otherwise, applies only to this software file.  Patent licenses, if
 *  any, provided herein do not apply to combinations of this program with
 *  other software, or any other product whatsoever.
 * 
 *  You should have received a copy of the GNU Lesser General Public
 *  License along with this library; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 *  Contact information: Silicon Graphics, Inc., 1600 Amphitheatre Pkwy,
 *  Mountain View, CA  94043, or:
 * 
 *  http://www.sgi.com 
 * 
 *  For further information regarding this notice, see: 
 * 
 *  http://oss.sgi.com/projects/GenInfo/NoticeExplan/
 *
 */
 
 
/*
 * Copyright (C) 1990,91,92   Silicon Graphics, Inc.
 *
 _______________________________________________________________________
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 |
 |   $Revision: 1.1.1.1 $
 |
 |   Description:
 |      This file defines the tab plane dragger class.
 |      This dragger allows you to perform scales
 |      and translations, all in one tidy plane.
 |
 | NOTE TO DEVELOPERS:
 |     For info about the structure of SoTabPlaneDragger:
 |     [1] compile: /usr/share/src/Inventor/samples/ivNodeKitStructure
 |     [2] type:    ivNodeKitStructure SoTabPlaneDragger.
 |     [3] The program prints a diagram of the scene graph and a table with 
 |         information about each part.
 |
 |  The following parts in this dragger are created at construction time.
 |  'ResourceName' corresponds to the name of the default geometry for the
 |  part. The dragger's constructor gets the scene graph for 'ResourceName'
 |  by querying the global dictionary ( SoDB::getByName("ResourceName"); ).  
 |
 |  Resource Name:                           Part Name:
 |
 |  tabPlaneTranslator                     - translator
 |  tabPlaneScaleTabMaterial               - scaleTabMaterial
 |  tabPlaneScaleTabHints                  - scaleTabHints
 |
 |
 |   Author(s): Paul Isaacs
 |
 ______________  S I L I C O N   G R A P H I C S   I N C .  ____________
 _______________________________________________________________________
 */
 
#ifndef  _SO_TAB_PLANE_DRAGGER_
#define  _SO_TAB_PLANE_DRAGGER_
 
#include <Inventor/SbLinear.h>
#include <Inventor/sensors/SoSensor.h>
#include <Inventor/projectors/SbLineProjector.h>
#include <Inventor/projectors/SbPlaneProjector.h>
#include <Inventor/actions/SoCallbackAction.h>
#include <Inventor/draggers/SoDragger.h>
 
class SoNode;
class SoCoordinate3;
class SoGLRenderAction;
class SoRayPickAction;
class SoFieldSensor;
 
 
 
class INVENTOR_API SoTabPlaneDragger : public SoDragger
{
    SO_KIT_HEADER(SoTabPlaneDragger);
 
    SO_KIT_CATALOG_ENTRY_HEADER(planeSwitch);
    SO_KIT_CATALOG_ENTRY_HEADER(translator);
    SO_KIT_CATALOG_ENTRY_HEADER(scaleTabs);
    SO_KIT_CATALOG_ENTRY_HEADER(scaleTabMaterial);
    SO_KIT_CATALOG_ENTRY_HEADER(scaleTabHints);
    SO_KIT_CATALOG_ENTRY_HEADER(scaleTabMaterialBinding);
    SO_KIT_CATALOG_ENTRY_HEADER(scaleTabNormalBinding);
    SO_KIT_CATALOG_ENTRY_HEADER(scaleTabNormal);
    SO_KIT_CATALOG_ENTRY_HEADER(edgeScaleCoords);
    SO_KIT_CATALOG_ENTRY_HEADER(edgeScaleTab0);
    SO_KIT_CATALOG_ENTRY_HEADER(edgeScaleTab1);
    SO_KIT_CATALOG_ENTRY_HEADER(edgeScaleTab2);
    SO_KIT_CATALOG_ENTRY_HEADER(edgeScaleTab3);
    SO_KIT_CATALOG_ENTRY_HEADER(cornerScaleCoords);
    SO_KIT_CATALOG_ENTRY_HEADER(cornerScaleTab0);
    SO_KIT_CATALOG_ENTRY_HEADER(cornerScaleTab1);
    SO_KIT_CATALOG_ENTRY_HEADER(cornerScaleTab2);
    SO_KIT_CATALOG_ENTRY_HEADER(cornerScaleTab3);
 
  public:
 
    SoTabPlaneDragger();
 
    SoSFVec3f    translation;
    SoSFVec3f    scaleFactor;
 
    void    adjustScaleTabSize();
 
  SoINTERNAL public:
    static void initClass();  
 
  protected:
 
    static void startCB( void *, SoDragger *);
    static void motionCB( void *, SoDragger *);
    static void finishCB( void *, SoDragger *);
    static void metaKeyChangeCB( void *, SoDragger *);
 
    SbLineProjector     *lineProj;
    SbPlaneProjector    *planeProj;
 
    SoFieldSensor *translFieldSensor;
    SoFieldSensor *scaleFieldSensor;
    static void   fieldSensorCB( void *, SoSensor * );
    static void valueChangedCB( void *, SoDragger * );
 
    virtual void    GLRender( SoGLRenderAction *action );
 
    void        dragStart();
    void        drag();
    void        dragFinish();
 
    void        translateStart();
    void        translateDrag();
    
    void        edgeScaleStart();
    void        edgeScaleDrag();
    
    void        cornerScaleStart();
    void        cornerScaleDrag();
    
    void        scaleUniformStart();
    void        scaleUniformDrag();
 
    SbVec3f           worldRestartPt;
    int               currentScalePatch;
 
    enum State {
            INACTIVE, TRANSLATING, EDGE_SCALING, CORNER_SCALING, UNIFORM_SCALING
    };
    bool                shftDown;
 
    State               currentState;
    State               restartState;
    int                 translateDir;
 
    SbVec3f             scaleCenter;
 
    bool                needScaleTabAdjustment;
    void                reallyAdjustScaleTabSize(SoGLRenderAction *action);
 
    void getXYScreenLengths( SbVec2f &lengths, const SbMatrix &localToScreen, 
                                const SbVec2s &winSize);
 
    virtual bool setUpConnections( bool onOff, bool doItAlways = FALSE );
 
    virtual void setDefaultOnNonWritingFields();
 
    virtual ~SoTabPlaneDragger();
 
  private:
    static const unsigned char geomBuffer[];
};    
 
#endif  /* _SO_TAB_PLANE_DRAGGER_ */