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Base class for all transform Nodes with built-in 3D user interfaces. More...
#include <Inventor/manips/SoTransformManip.h>
Public Member Functions | |
SoTransformManip () | |
Constructor. | |
SoDragger * | getDragger () |
Returns a pointer to the dragger being used by this manipulator. | |
SbBool | replaceNode (SoPath *p) |
Replaces the tail of the path with this manipulator. | |
SbBool | replaceManip (SoPath *p, SoTransform *newOne) const |
Replaces the tail of the path, which must be this manipulator, with the given SoTransform node. | |
virtual void | doAction (SoAction *action) |
These functions implement all actions for nodekits. | |
virtual void | callback (SoCallbackAction *action) |
virtual void | GLRender (SoGLRenderAction *action) |
These virtual functions implement all of the actions for nodes, Most of the default implementations do nothing. | |
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 () const |
Returns pointer to children, or NULL if none. | |
Static Public Member Functions | |
static void | initClass () |
initialize the class | |
Protected Member Functions | |
virtual void | copyContents (const SoFieldContainer *fromFC, SbBool copyConnections) |
Redefines this to also copy the dragger. | |
virtual void | setDragger (SoDragger *newDragger) |
virtual | ~SoTransformManip () |
Static Protected Member Functions | |
static void | transferFieldValues (const SoTransform *from, SoTransform *to) |
static void | valueChangedCB (void *, SoDragger *) |
static void | fieldSensorCB (void *, SoSensor *) |
Protected Attributes | |
SoFieldSensor * | rotateFieldSensor |
SoFieldSensor * | translFieldSensor |
SoFieldSensor * | scaleFieldSensor |
SoFieldSensor * | centerFieldSensor |
SoFieldSensor * | scaleOrientFieldSensor |
SoChildList * | children |
SoTransformManip is the base class for all SoTransform nodes that have a built-in 3D user interface. Since it is derived from SoTransform, any changes to its fields result in the rotation, scaling, and/or translation of nodes that follow it in the scene graph.
Typically, you will want to replace a regular SoTransform with an SoTransformManip (as when the user selects an object to be moved), or vice versa (as when the object is deselected, and the motion interface should go away). Use the replaceNode() method to insert a manipulator into a scene graph, and the replaceManip() method to remove it when done.
Every subclass of SoTransformManip utilizes a dragger of some sort to provide a 3D interface. (This class does not have dragger; but all the subclasses do.) However a manipulator differs from a dragger; it influences other objects in the scene because, as an SoTransform, it alters the state. The fields values and movement of a dragger, on the other hand, affect only the dragger itself.
Each SoTransformManip subclass utilizes its dragger by adding it as a hidden child. When an action is applied to the manipulator, such as rendering or handling events, the manipulator first traverses the dragger, and then the manipulator adds its transformation matrix to the state. When you click-drag-release over the manipulator, it passes these events down to the dragger, which moves as a result ("I can't <em>help</em> it, I'm a dragger!").
The manipulator maintains consistency between the fields of the dragger and its own fields. Let's say you use the mouse to rotate the dragger. Callbacks insure that the rotation field of the manipulator will change by the same amount, resulting in the rotation of nodes which follow in the scene graph. Similarly, if you set any of the SoTransformManip fields the manipulator will move the dragger accordingly. You can use this feature to impose contraints on a manipulator: If the user moves the manipulator so that a field value becomes too large, you can set the field back to your desired maximum, and the whole thing will move back to where you specified.
Since each SoTransformManip uses a dragger to provide its interface, you will generally be told to look at the dragger's reference page for details of how it moves and what the different parts are for. The interface for the dragger and the manipulator will always be exactly the same. Usually, a SoTransformManip will surround the objects that it influences (i.e., those that move along with it). This is because the manipulator turns on the surroundScale part of its dragger; so the dragger geometry expands to envelope the other objects (see the reference page for SoSurroundScale).
Because the dragger is a hidden child, you can see the dragger on screen and interact with it, but the dragger does not show up when you write the manipulator to file. Also, any SoPath will end at the manipulator. (See the Actions section of this reference page for a complete description of when the dragger is traversed).
If you want to get a pointer to the dragger you can get it from the manipulator using the getDragger() method. You will need to do this if you want to change the geometry of a manipulator, since the geometry actually belongs to the dragger.
Definition at line 163 of file SoTransformManip.h.
SoTransformManip::SoTransformManip | ( | ) |
virtual SoTransformManip::~SoTransformManip | ( | ) | [protected, virtual] |
virtual void SoTransformManip::callback | ( | SoCallbackAction * | action | ) | [virtual] |
Reimplemented from SoTransform.
virtual void SoTransformManip::copyContents | ( | const SoFieldContainer * | fromFC, |
SbBool | copyConnections | ||
) | [protected, virtual] |
Reimplemented from SoNode.
virtual void SoTransformManip::doAction | ( | SoAction * | action | ) | [virtual] |
They first traverse the children, then use the SoTransform version of the actions. They traverse first so that the transform will affect objects which follow it in the tree, but not the dragger-child.
Reimplemented from SoTransform.
static void SoTransformManip::fieldSensorCB | ( | void * | , |
SoSensor * | |||
) | [static, protected] |
Reimplemented in SoCenterballManip.
virtual void SoTransformManip::getBoundingBox | ( | SoGetBoundingBoxAction * | action | ) | [virtual] |
Reimplemented from SoTransform.
virtual SoChildList* SoTransformManip::getChildren | ( | ) | const [virtual] |
Reimplemented from SoNode.
SoDragger* SoTransformManip::getDragger | ( | ) |
Given this pointer, you can customize the dragger just like you would any other dragger. You can change geometry using the setPart() method, or add callbacks using the methods found in the SoDragger reference page.
virtual void SoTransformManip::getMatrix | ( | SoGetMatrixAction * | action | ) | [virtual] |
Reimplemented from SoTransform.
virtual void SoTransformManip::GLRender | ( | SoGLRenderAction * | action | ) | [virtual] |
Reimplemented from SoTransform.
virtual void SoTransformManip::handleEvent | ( | SoHandleEventAction * | action | ) | [virtual] |
Reimplemented from SoNode.
static void SoTransformManip::initClass | ( | ) | [static] |
Reimplemented from SoTransform.
Reimplemented in SoCenterballManip, SoHandleBoxManip, SoJackManip, SoTabBoxManip, SoTrackballManip, SoTransformBoxManip, and SoTransformerManip.
virtual void SoTransformManip::pick | ( | SoPickAction * | action | ) | [virtual] |
Reimplemented from SoTransform.
SbBool SoTransformManip::replaceManip | ( | SoPath * | p, |
SoTransform * | newOne | ||
) | const |
If the path has a nodekit, this will try to use setPart() to insert the new node. Otherwise, the manipulator requires that the next to last node in the path chain be a group.
The field values from the manipulator will be copied to the transform node, and the manipulator will be replaced.
The manipulator will not call ref() or unref() on the node which is replacing it, nor will it make any changes to field connections. The calling process is thus responsible for keeping track of its own nodes and field connections.
The tail of the path must be an SoTransform node (or subclass thereof). If the path has a nodekit, this will try to use setPart() to insert the manipulator. Otherwise, the manipulator requires that the next to last node in the path chain be a group.
The field values from the transform node will be copied to this manipulator, and the transform will be replaced.
The manipulator will not call ref() on the node it is replacing. The old node will disappear if it has no references other than from the input path p
and its parent, since this manipulator will be replacing it in both of those places. Nor will the manipulator make any changes to field connections of the old node. The calling process is thus responsible for keeping track of its own nodes and field connections.
virtual void SoTransformManip::search | ( | SoSearchAction * | action | ) | [virtual] |
Reimplemented from SoNode.
virtual void SoTransformManip::setDragger | ( | SoDragger * | newDragger | ) | [protected, virtual] |
Reimplemented in SoCenterballManip.
static void SoTransformManip::transferFieldValues | ( | const SoTransform * | from, |
SoTransform * | to | ||
) | [static, protected] |
static void SoTransformManip::valueChangedCB | ( | void * | , |
SoDragger * | |||
) | [static, protected] |
Reimplemented in SoCenterballManip.
SoFieldSensor* SoTransformManip::centerFieldSensor [protected] |
Definition at line 255 of file SoTransformManip.h.
SoChildList* SoTransformManip::children [protected] |
Definition at line 261 of file SoTransformManip.h.
SoFieldSensor* SoTransformManip::rotateFieldSensor [protected] |
Definition at line 252 of file SoTransformManip.h.
SoFieldSensor* SoTransformManip::scaleFieldSensor [protected] |
Definition at line 254 of file SoTransformManip.h.
SoFieldSensor* SoTransformManip::scaleOrientFieldSensor [protected] |
Definition at line 256 of file SoTransformManip.h.
SoFieldSensor* SoTransformManip::translFieldSensor [protected] |
Definition at line 253 of file SoTransformManip.h.