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Coin
4.0.3
Coin3D core library
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Coin
4.0.3
Coin3D core library
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The SoCenterballDragger class is a dragger you can rotate and translate. More...
#include <Inventor/draggers/SoCenterballDragger.h>
Public Attributes | |
| SoSFVec3f | center |
| SoSFRotation | rotation |
 Public Attributes inherited from SoDragger | |
| SoSFBool | isActive |
| Public Attributes inherited from SoInteractionKit | |
| SoSFEnum | boundingBoxCaching |
| SoSFEnum | pickCulling |
| SoSFEnum | renderCaching |
| SoSFEnum | renderCulling |
Protected Attributes | |
| SoSFNode | antiSquish |
| SoFieldSensor * | centerFieldSensor |
| SoSFNode | lightModel |
| SoSFNode | rot2X90 |
| SoSFNode | rotator |
| SoFieldSensor * | rotFieldSensor |
| SoSFNode | rotX90 |
| SoSFNode | rotY90 |
| SoSFNode | surroundScale |
| SoSFNode | translateToCenter |
| SoSFNode | XAxis |
| SoSFNode | XAxisSwitch |
| SoSFNode | XCenterChanger |
| SoSFNode | XRotator |
| SoSFNode | YAxis |
| SoSFNode | YAxisSwitch |
| SoSFNode | YCenterChanger |
| SoSFNode | YRotator |
| SoSFNode | ZAxis |
| SoSFNode | ZAxisSwitch |
| SoSFNode | ZCenterChanger |
| SoSFNode | ZRotator |
| Protected Attributes inherited from SoDragger | |
| SoSFNode | motionMatrix |
| Protected Attributes inherited from SoInteractionKit | |
| SoFieldSensor * | fieldSensor |
| SoSFNode | geomSeparator |
| SoSeparator * | oldTopSep |
| SoSFNode | topSeparator |
| Protected Attributes inherited from SoBaseKit | |
| SoSFNode | callbackList |
| SoChildList * | children |
| SbBool | connectionsSetUp |
| Protected Attributes inherited from SoNode | |
| SbUniqueId | uniqueId |
| Protected Attributes inherited from SoFieldContainer | |
| SbBool | isBuiltIn |
Additional Inherited Members | |
| Public Types inherited from SoDragger | |
| enum | ProjectorFrontSetting { FRONT , BACK , USE_PICK } |
| Public Types inherited from SoInteractionKit | |
| enum | CacheEnabled { OFF , ON , AUTO } |
| Public Types inherited from SoNode | |
| enum | NodeType { INVENTOR = 0x0000 , VRML1 = 0x0001 , VRML2 = 0x0002 , INVENTOR_1 = 0x0004 , INVENTOR_2_0 = 0x0008 , INVENTOR_2_1 = 0x0010 , INVENTOR_2_5 = 0x0020 , INVENTOR_2_6 = 0x0040 , COIN_1_0 = 0x0080 , COIN_2_0 = 0x0100 , EXTENSION = 0x0200 , COIN_2_2 = 0x0400 , COIN_2_3 = 0x0800 , COIN_2_4 = 0x1000 , INVENTOR_5_0 = 0x2000 , COIN_2_5 = 0x4000 , COIN_3_0 = 0x8000 , INVENTOR_6_0 = 0x10000 , COIN_4_0 = 0x20000 } |
| Protected Types inherited from SoBase | |
| enum | BaseFlags { IS_ENGINE = 0x01 , IS_GROUP = 0x02 } |
| Static Protected Attributes inherited from SoNode | |
| static int | nextActionMethodIndex = 0 |
| static SbUniqueId | nextUniqueId = 1 |
The SoCenterballDragger class is a dragger you can rotate and translate.
Here's how the dragger looks with its default geometry in the inactive state:
For rotation, click either the ball "bands" to constrain rotation to happen around the normal vector of the disc, or anywhere else on the (invisible) ball for free-form rotation.
Translation is done by clicking and dragging any of the four arrow markers. Hold SHIFT to constrain translation to a single axis instead of in the plane.
When translating, instead of modifying the translation part of the motion matrix, a center field is updated, and the geometry is moved using an internal transformation node.
Here's a simple usage example, in the form of a scene graph as an iv-file:
#Inventor V2.1 ascii
Separator {
# The dragger, offset a little bit against the geometry to clip,
# so as to not mess up the user interface.
Separator {
Translation { translation -4 0 0 }
DEF cbdragger CenterballDragger { }
}
# The clipping plane sub-graph.
TransformSeparator {
# Connect transformations to those of the dragger.
Rotation { rotation 0 0 1 0 = USE cbdragger . rotation }
Translation { translation 0 0 0 = USE cbdragger . center }
# Use a simple lineset-based indicator to show how the
# clipping plane is situated in space.
Coordinate3 {
point [
0 2 2, 0 2 -2,
0 -2 2, 0 -2 -2,
0 2 -2, 0 -2 -2,
0 2 2, 0 -2 2
]
}
LineSet { numVertices [ 2, 2, 2, 2 ] }
ClipPlane { }
}
# Then follows the geometry that gets clipped. For this
# example, we use a simple sphere.
Sphere { }
}
The figure above shows the example scene graph in a viewer with the nearest cross on the centerball dragger selected. Moving the dragger then moves the associated clip plane over the geometry (the sphere in this case).
| SoCenterballDragger::SoCenterballDragger | ( | void | ) |
Default constructor, sets up the dragger nodekit catalog with the interaction and feedback geometry.
Nodekit structure (new entries versus parent class marked with arrow prefix):
CLASS SoCenterballDragger
-->"this"
"callbackList"
"topSeparator"
"motionMatrix"
--> "translateToCenter"
--> "surroundScale"
--> "antiSquish"
--> "lightModel"
"geomSeparator"
--> "XAxisSwitch"
--> "XAxis"
--> "YAxisSwitch"
--> "YAxis"
--> "ZAxisSwitch"
--> "ZAxis"
--> "rotator"
--> "YRotator"
--> "ZCenterChanger"
--> "rotX90"
--> "ZRotator"
--> "YCenterChanger"
--> "rotY90"
--> "XCenterChanger"
--> "rot2X90"
--> "XRotator"
(See SoBaseKit::printDiagram() for information about the output formatting.)
Detailed information on catalog parts:
CLASS SoCenterballDragger
PVT "this", SoCenterballDragger ---
"callbackList", SoNodeKitListPart [ SoCallback, SoEventCallback ]
PVT "topSeparator", SoSeparator ---
PVT "motionMatrix", SoMatrixTransform ---
"translateToCenter", SoMatrixTransform ---
"surroundScale", SoSurroundScale ---
"antiSquish", SoAntiSquish ---
"lightModel", SoLightModel ---
PVT "geomSeparator", SoSeparator ---
"rotator", SoRotateSphericalDragger ---
"YRotator", SoRotateCylindricalDragger ---
"ZCenterChanger", SoTranslate2Dragger ---
PVT "rotX90", SoRotation ---
"ZRotator", SoRotateCylindricalDragger ---
"YCenterChanger", SoTranslate2Dragger ---
PVT "rotY90", SoRotation ---
"XCenterChanger", SoTranslate2Dragger ---
PVT "rot2X90", SoRotation ---
PVT "XAxisSwitch", SoSwitch ---
"XAxis", SoSeparator ---
PVT "YAxisSwitch", SoSwitch ---
"YAxis", SoSeparator ---
PVT "ZAxisSwitch", SoSwitch ---
"ZAxis", SoSeparator ---
"XRotator", SoRotateCylindricalDragger ---
(See SoBaseKit::printTable() for information about the output formatting.)
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protectedvirtual |
Protected destructor.
(Dragger classes are derived from SoBase, so they are reference counted and automatically destroyed when their reference count goes to 0.)
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
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protectedvirtual |
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 calculate their bounding box also override this method to change the relevant state variables.
Reimplemented from SoDragger.
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static |
Returns the nodekit catalog which defines the layout of this class' kit.
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staticprotected |
Returns the pointer to the pointer of the nodekit catalog for this class.
This static method returns the SoType object associated with objects of this class.
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protectedvirtual |
Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.
Reimplemented from SoDragger.
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staticprotected |
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Returns the SoFieldData class which holds information about fields in this node.
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protectedvirtual |
Action method for SoGetMatrixAction.
Updates action by accumulating with the transformation matrix of this node (if any).
Reimplemented from SoDragger.
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virtual |
Returns the nodekit catalog which defines the layout of this class' kit.
Reimplemented from SoDragger.
Initializes type system for this dragger class.
Application programmers should usually not have to invoke this method, see documentation of SoInteraction::init().
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Needed to deactivate some feedback.
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
Needed to activate some feedback.
(Be aware that this method is unlikely to be of interest to the application programmer who does not want to extend the library with new custom nodekits or draggers. If you indeed are writing extensions, see the information in the SoBaseKit class documentation.)
This is a virtual method, and the code in it should call SoField::setDefault() with argument TRUE on part fields that should not be written upon scene graph export operations.
This is typically done when:
field value is NULL and part is NULL by default
it is a leaf SoGroup or SoSeparator node with no children
it is a leaf listpart with no children and an SoGroup or SoSeparator container
it is a non-leaf part and it is of SoGroup type and all fields are at their default values
Subclasses should usually override this to do additional settings for new member fields. From the subclass, do remember to call "upwards" to your superclass' setDefaultOnNonWritingFields() method.
Reimplemented from SoDragger.
Sets values for the internal SoSwitch parts. If activechild == NULL, all feedback is deactivated.
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protectedvirtual |
Sets up all internal connections for instances of this class.
(This method will usually not be of interest to the application programmer, unless you want to extend the library with new custom nodekits or dragger classes. If so, see the SoBaseKit class documentation.)
Reimplemented from SoInteractionKit.
Should be called after motion matrix has been updated by a child dragger.
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
| SoSFVec3f SoCenterballDragger::center |
Continuously updated to contain the current translation from the dragger's internal local origo position.
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protected |
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
| SoSFRotation SoCenterballDragger::rotation |
This field is continuously updated to contain the rotation of the ball.
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protected |
This API member is considered internal to the library, as it is not likely to be of interest to the application programmer.
1.10.0