Interactively draw an ellipse in normalized screen space. More...
#include <Inventor/drawers/SoEllipseScreenDrawer.h>
Public Types | |
enum | CreationMethod { CORNER_CORNER , CENTER_CORNER } |
Methods to create ellipse. More... | |
Public Member Functions | |
virtual SoType | getTypeId () const |
Returns the type identifier for this specific instance. | |
SoEllipseScreenDrawer () | |
Constructor. | |
virtual void | reset () |
Clears the points in the line and resets internal state to initial values. | |
Public Member Functions inherited from SoPolyLineScreenDrawer | |
SoPolyLineScreenDrawer () | |
Constructor. | |
virtual void | clear () |
Convenience method to clear the points in the line. | |
Public Member Functions inherited from SoScreenDrawer | |
SoScreenDrawer () | |
Constructor. | |
Public Member Functions inherited from SoNode | |
virtual void | setOverride (const SbBool state) |
Turns the override flag on or off. | |
virtual SbBool | isOverride () const |
Returns the state of the override flag. | |
virtual SoNode * | copy (SbBool copyConnections=FALSE) const |
Creates and returns an exact copy of the node. | |
virtual SbBool | affectsState () const |
Returns TRUE if a node has an effect on the state during traversal. | |
virtual void | touch () |
Marks an instance as modified, simulating a change to it. | |
Public Member Functions inherited from SoFieldContainer | |
void | setToDefaults () |
Sets all fields in this object to their default values. | |
SbBool | hasDefaultValues () const |
Returns TRUE if all of the object's fields have their default values. | |
SbBool | fieldsAreEqual (const SoFieldContainer *fc) const |
Returns TRUE if this object's fields are exactly equal to fc's fields. | |
void | copyFieldValues (const SoFieldContainer *fc, SbBool copyConnections=FALSE) |
Copies the contents of fc's fields into this object's fields. | |
SoNONUNICODE SbBool | set (const char *fieldDataString) |
Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
SbBool | set (const SbString &fieldDataString) |
Sets one or more fields in this object to the values specified in the given string, which should be a string in the Open Inventor file format. | |
void | get (SbString &fieldDataString) |
Returns the values of the fields of this object in the Open Inventor ASCII file format in the given string. | |
virtual int | getFields (SoFieldList &list) const |
Appends references to all of this object's fields to resultList, and returns the number of fields appended. | |
virtual int | getAllFields (SoFieldList &list) const |
Returns a list of fields, including the eventIn's and eventOut's. | |
virtual SoField * | getField (const SbName &fieldName) const |
Returns a the field of this object whose name is fieldName. | |
virtual SoField * | getEventIn (const SbName &fieldName) const |
Returns a the eventIn with the given name. | |
virtual SoField * | getEventOut (const SbName &fieldName) const |
Returns the eventOut with the given name. | |
SbBool | getFieldName (const SoField *field, SbName &fieldName) const |
Returns the name of the given field in the fieldName argument. | |
SbBool | enableNotify (SbBool flag) |
Notification at this Field Container is enabled (if flag == TRUE) or disabled (if flag == FALSE). | |
SbBool | isNotifyEnabled () const |
Notification is the process of telling interested objects that this object has changed. | |
virtual void | setUserData (void *data) |
Sets application data. | |
void * | getUserData (void) const |
Gets user application data. | |
Public Member Functions inherited from SoBase | |
virtual SbName | getName () const |
Returns the name of an instance. | |
virtual void | setName (const SbName &name) |
Sets the name of an instance. | |
void | setSynchronizable (const bool b) |
Sets this to be a ScaleViz synchronizable object. | |
bool | isSynchronizable () const |
Gets the ScaleViz synchronizable state of this object. | |
Public Member Functions inherited from SoRefCounter | |
void | ref () const |
Adds a reference to an instance. | |
void | unref () const |
Removes a reference from an instance. | |
void | unrefNoDelete () const |
unrefNoDelete() should be called when it is desired to decrement the reference count, but not delete the instance if this brings the reference count to zero. | |
int | getRefCount () const |
Returns current reference count. | |
void | lock () const |
lock this instance. | |
void | unlock () const |
unlock this instance. | |
Public Member Functions inherited from SoTypedObject | |
SbBool | isOfType (const SoType &type) const |
Returns TRUE if this object is of the type specified in type or is derived from that type. | |
template<typename TypedObjectClass > | |
SbBool | isOfType () const |
Returns TRUE if this object is of the type of class TypedObjectClass or is derived from that class. | |
Static Public Member Functions | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Static Public Member Functions inherited from SoPolyLineScreenDrawer | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Static Public Member Functions inherited from SoScreenDrawer | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Static Public Member Functions inherited from SoNode | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
static SoNode * | getByName (const SbName &name) |
A node's name can be set using SoBase::setName(). | |
static int | getByName (const SbName &name, SoNodeList &list) |
A node's name can be set using SoBase::setName(). | |
Static Public Member Functions inherited from SoFieldContainer | |
static SoType | getClassTypeId () |
Returns the type of this class. | |
Static Public Member Functions inherited from SoBase | |
static SoType | getClassTypeId () |
Returns type identifier for this class. | |
Static Public Member Functions inherited from SoTypedObject | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Public Attributes | |
SoSFEnum | method |
Method to create ellipse. | |
SoSFUInt32 | nbPoint |
Number of points in generated ellipse. | |
Public Attributes inherited from SoPolyLineScreenDrawer | |
SoSFUInt32 | simplificationThreshold |
Threshold (in pixels) used to simplify line when it is finished. | |
SoSFBool | doCCW |
Make the line counter-clockwise when it is finalized. | |
SoSFColor | color |
Color of line. | |
SoMFVec2f | point |
Points of line. | |
SoSFBool | isClosed |
Close the line during display (connect last point to first point). | |
SoSFUShort | linePattern |
Stipple pattern. | |
SoSFInt32 | linePatternScaleFactor |
Stipple pattern scale factor. | |
SoSFFloat | lineWidth |
Width of lines. | |
SbEventHandler< const EventArg & > | onStart |
Event raised when starting to draw a polyline. | |
SbEventHandler< const EventArg & > | onMove |
Event raised during polyline drawing. | |
SbEventHandler< EventArg & > | onFinish |
Event raised when the line is finished. | |
Public Attributes inherited from SoScreenDrawer | |
SoSFNode | sceneGraph |
Scene graph to render. | |
Interactively draw an ellipse in normalized screen space.
This class can be used to interactively draw an ellipse on screen.
When the ellipse is finished, an event is raised to notify the application (see SoPolyLineScreenDrawer::onFinish ). Points are returned as normalized coordinates in the range -1..1, which is conveniently the default view volume for an SoOrthographicCamera node.
The line color is specified by the color field in the parent class SoPolyLineScreenDrawer.
Please see SoPolyLineScreenDrawer for general notes and code example.
Ellipse specific notes:
[C++]
Screen drawer classes must be initialized by calling SoInteraction::init(). High level viewer init methods, like SoWin::init(), automatically do this. However, if the application is calling SoDB::init() directly, then it is usually necessary to also call SoInteraction::init() before using the screen drawer classes.
point | [] |
color | 1 0 0 |
simplificationThreshold | 0 |
isClosed | TRUE |
method | CORNER_CORNER |
nbPoint | 16 |
SoLassoScreenDrawer, SoPolyLineScreenDrawer, SoPolygonScreenDrawer, SoRectangleScreenDrawer,
Definition at line 96 of file SoEllipseScreenDrawer.h.
Methods to create ellipse.
Enumerator | |
---|---|
CORNER_CORNER | Initial point is a corner, current point is a corner. |
CENTER_CORNER | Initial point is the center, current point is a corner. |
Definition at line 107 of file SoEllipseScreenDrawer.h.
SoEllipseScreenDrawer::SoEllipseScreenDrawer | ( | ) |
Constructor.
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static |
Returns the type identifier for this class.
|
virtual |
Returns the type identifier for this specific instance.
Reimplemented from SoPolyLineScreenDrawer.
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virtual |
Clears the points in the line and resets internal state to initial values.
This cancels any current drawing.
Since Open Inventor 10.7.3
Reimplemented from SoPolyLineScreenDrawer.
SoSFEnum SoEllipseScreenDrawer::method |
Method to create ellipse.
Use enum CreationMethod. Default is CORNER_CORNER.
Definition at line 118 of file SoEllipseScreenDrawer.h.
SoSFUInt32 SoEllipseScreenDrawer::nbPoint |
Number of points in generated ellipse.
Default is 16. Must be > 0.
Definition at line 123 of file SoEllipseScreenDrawer.h.