SoClipPlaneManip(3) The SoClipPlaneManip class is used to manipulate clip planes.

SYNOPSIS


#include <Inventor/manips/SoClipPlaneManip.h>

Inherits SoClipPlane.

Public Member Functions


virtual SoType getTypeId (void) const

SoClipPlaneManip (void)

SoDragger * getDragger (void)

void setValue (const SbBox3f &box, const SbVec3f &planenormal, float draggerscalefactor)

SbBool replaceNode (SoPath *p)

SbBool replaceManip (SoPath *p, SoClipPlane *newone) const

virtual void doAction (SoAction *action)

virtual void callback (SoCallbackAction *action)

virtual void GLRender (SoGLRenderAction *action)

virtual void getBoundingBox (SoGetBoundingBoxAction *action)

virtual void getMatrix (SoGetMatrixAction *action)

virtual void handleEvent (SoHandleEventAction *action)

virtual void pick (SoPickAction *action)

virtual void search (SoSearchAction *action)

virtual SoChildList * getChildren (void) const

Static Public Member Functions


static SoType getClassTypeId (void)

static void initClass (void)

Public Attributes


SoSFVec3f draggerPosition

Protected Member Functions


virtual const SoFieldData * getFieldData (void) const

virtual ~SoClipPlaneManip (void)

void setDragger (SoDragger *newdragger)

virtual void copyContents (const SoFieldContainer *fromfc, SbBool copyconnections)

Static Protected Member Functions


static const SoFieldData ** getFieldDataPtr (void)

static void valueChangedCB (void *f, SoDragger *d)

static void fieldSensorCB (void *f, SoSensor *d)

static void transferFieldValues (const SoClipPlane *from, SoClipPlane *to)

Protected Attributes


SoFieldSensor * planeFieldSensor

SoFieldSensor * onFieldSensor

SoFieldSensor * draggerPosFieldSensor

SoChildList * children

Detailed Description

The SoClipPlaneManip class is used to manipulate clip planes.


 


 

A manipulator is used by replacing the node you want to edit in the graph with the manipulator. Draggers are used to manipulate the node. When manipulation is finished, the node is put back into the graph, replacing the manipulator.

An SoJackDragger is used by instances of this manipulator class as the default dragger when manipulating SoClipPlane nodes. See the documentation of SoJackDragger for details about how to control the manipulator.

An 'action shot' of the SoClipPlaneManip:

This manipulator is an extension versus the original SGI Inventor v2.1 API. In addition to being a Coin extension, it is also present in TGS' Inventor implementation (with the same API).

Please not that this manipulator is a bit different than the other manipulators, since it will not automatically scale and translate the dragger to surround the geometry. The setValue() function must be used to initialize the manipulator/dragger. Below you'll find some example code that loads an Inventor file and adds a clip plane manipulator. 

  #include <Inventor/Qt/SoQt.h>
  #include <Inventor/Qt/viewers/SoQtExaminerViewer.h>
  #include <Inventor/SoDB.h>
  #include <Inventor/nodes/SoSeparator.h>
  #include <Inventor/actions/SoGetBoundingBoxAction.h>
  #include <Inventor/SoInput.h>
  #include <Inventor/manips/SoClipPlaneManip.h>
  #include <assert.h>
  
  // *************************************************************************
  
  int
  main(int argc, char ** argv)
  {
    assert(argc >= 2);
    QWidget * window = SoQt::init(argv[0]);
    SoQtExaminerViewer * ex = new SoQtExaminerViewer( window );
    ex->setBackgroundColor(SbColor(0.1f, 0.3f, 0.5f));
  
    SoInput input;
    SbBool ok = input.openFile(argv[1]);
    if (!ok) {
      fprintf(stderr,'Unable to open file.);
      return -1;
    }
    SoSeparator * root = SoDB::readAll(&input); 
    if (!root) {
      fprintf(stderr,'Unable to read file.);
      return -1;
    }
    root->ref();
    SoGetBoundingBoxAction ba(ex->getViewportRegion());
    ba.apply(root);
    SbBox3f box = ba.getBoundingBox();
    SoClipPlaneManip * manip = new SoClipPlaneManip;
    manip->setValue(box, SbVec3f(1.0f, 0.0f, 0.0f), 1.02f);
    root->insertChild(manip, 0);
    ex->setSceneGraph(root);
    ex->show();
    SoQt::show( window );
    SoQt::mainLoop();
    delete ex;
    root->unref();
    return 0;
  }

Since:

TGS Inventor 2.5

Coin 1.0

Constructor & Destructor Documentation

SoClipPlaneManip::SoClipPlaneManip (void)

An SoJackDragger is set up here as the internal dragger used for manipulation of an SoClipPlane node.

SoClipPlaneManip::~SoClipPlaneManip (void) [protected], [virtual]

Destructor.

Member Function Documentation

SoType SoClipPlaneManip::getClassTypeId (void) [static]

This static method returns the SoType object associated with objects of this class.

Reimplemented from SoClipPlane.

SoType SoClipPlaneManip::getTypeId (void) const [virtual]

Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and 'downward' casting.

Usage example: 

  void foo(SoNode * node)
  {
    if (node->getTypeId() == SoFile::getClassTypeId()) {
      SoFile * filenode = (SoFile *)node;  // safe downward cast, knows the type
    }
  }

For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.

For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.

Reimplemented from SoClipPlane.

const SoFieldData ** SoClipPlaneManip::getFieldDataPtr (void) [static], [protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Reimplemented from SoClipPlane.

const SoFieldData * SoClipPlaneManip::getFieldData (void) const [protected], [virtual]

Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoClipPlane.

void SoClipPlaneManip::initClass (void) [static]

Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

Reimplemented from SoClipPlane.

SoDragger * SoClipPlaneManip::getDragger (void)

Returns pointer to dragger used for interaction.

void SoClipPlaneManip::setValue (const SbBox3f &box, const SbVec3f &planenormal, floatdraggerscalefactor)

Sets the clip plane based on the center of box and normal. The size of box is used as a scale factor to the dragger, multiplied with draggerscalefactor.

SbBool SoClipPlaneManip::replaceNode (SoPath *path)

Replaces the node specified by path with this manipulator. The manipulator will copy the field data from the node, to make it affect the state in the same way as the node.

SbBool SoClipPlaneManip::replaceManip (SoPath *path, SoClipPlane *newone) const

Replaces this manipulator from the position specified by path with newnode. If newnode is NULL, an SoClipPlane will be created for you.

void SoClipPlaneManip::doAction (SoAction *action) [virtual]

This function performs the typical operation of a node for any action.

Reimplemented from SoClipPlane.

void SoClipPlaneManip::callback (SoCallbackAction *action) [virtual]

Action method for SoCallbackAction.

Simply updates the state according to how the node behaves for the render action, so the application programmer can use the SoCallbackAction for extracting information about the scene graph.

Reimplemented from SoClipPlane.

void SoClipPlaneManip::GLRender (SoGLRenderAction *action) [virtual]

Action method for the SoGLRenderAction.

This is called during rendering traversals. Nodes influencing the rendering state in any way or who wants to throw geometry primitives at OpenGL overrides this method.

Reimplemented from SoClipPlane.

void SoClipPlaneManip::getBoundingBox (SoGetBoundingBoxAction *action) [virtual]

Action method for the SoGetBoundingBoxAction.

Calculates bounding box and center coordinates for node and modifies the values of the action to encompass the bounding box for this node and to shift the center point for the scene more towards the one for this node.

Nodes influencing how geometry nodes calculates their bounding box also overrides this method to change the relevant state variables.

Reimplemented from SoNode.

void SoClipPlaneManip::getMatrix (SoGetMatrixAction *action) [virtual]

Action method for SoGetMatrixAction.

Updates action by accumulating with the transformation matrix of this node (if any).

Reimplemented from SoNode.

void SoClipPlaneManip::handleEvent (SoHandleEventAction *action) [virtual]

Action method for SoHandleEventAction.

Inspects the event data from action, and processes it if it is something which this node should react to.

Nodes influencing relevant state variables for how event handling is done also overrides this method.

Reimplemented from SoNode.

void SoClipPlaneManip::pick (SoPickAction *action) [virtual]

Action method for SoPickAction.

Does common processing for SoPickAction action instances.

Reimplemented from SoClipPlane.

void SoClipPlaneManip::search (SoSearchAction *action) [virtual]

Action method for SoSearchAction.

Compares the search criteria from the action to see if this node is a match. Searching is done by matching up all criteria set up in the SoSearchAction -- if any of the requested criteria is a miss, the search is not deemed successful for the node.

See also:

SoSearchAction

Reimplemented from SoNode.

SoChildList * SoClipPlaneManip::getChildren (void) const [virtual]

Returns the children of this node.

Reimplemented from SoNode.

void SoClipPlaneManip::setDragger (SoDragger *newdragger) [protected]

Sets a dragger to use for this manipulator. The default dragger is an SoJackDragger.

void SoClipPlaneManip::copyContents (const SoFieldContainer *from, SbBoolcopyconnections) [protected], [virtual]

Makes a deep copy of all data of from into this instance, except external scenegraph references if copyconnections is FALSE.

This is the protected method that should be overridden by extension node / engine / dragger / whatever subclasses which needs to account for internal data that are not handled automatically.

For copying nodes from application code, you should not invoke this function directly, but rather call the SoNode::copy() function: 

  SoNode * mynewnode = templatenode->copy();

The same also goes for engines.

Make sure that when you override the copyContents() method in your extension class that you also make it call upwards to it's parent superclass in the inheritance hierarchy, as copyContents() in for instance SoNode and SoFieldContainer does important work. It should go something like this: 

  void
  MyCoinExtensionNode::copyContents(const SoFieldContainer * from,
                                    SbBool copyconnections)
  {
    // let parent superclasses do their thing (copy fields, copy
    // instance name, etc etc)
    SoNode::copyContents(from, copyconnections);
    // [..then copy internal data..]
  }


 

Reimplemented from SoNode.

void SoClipPlaneManip::valueChangedCB (void *m, SoDragger *dragger) [static], [protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Called whenever dragger is touched.

void SoClipPlaneManip::fieldSensorCB (void *m, SoSensor *s) [static], [protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Called whenever one of the fields changes value.

void SoClipPlaneManip::transferFieldValues (const SoClipPlane *from, SoClipPlane *to) [static], [protected]

Copies field values from one clip plane node to another.

Member Data Documentation

SoSFVec3f * SoClipPlaneManip::draggerPosition

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

SoFieldSensor * SoClipPlaneManip::planeFieldSensor [protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

SoFieldSensor * SoClipPlaneManip::onFieldSensor [protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

SoFieldSensor * SoClipPlaneManip::draggerPosFieldSensor [protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

SoChildList * SoClipPlaneManip::children [protected]

This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.

Author

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