(Preview feature) [Medical] Defines a view for use with ViewManager. More...
#include <Medical/nodes/SceneView.h>
Public Member Functions | |
virtual SoType | getTypeId () const |
Returns the type identifier for this specific instance. | |
void | setViewport (float origX, float origY, float sizeX, float sizeY) |
Convenience method to set viewport in normalized coordinates with one call. | |
void | setViewport (const SbVec4f &viewport) |
Convenience method to set viewport in normalized coordinates with one call. | |
const SbVec4f & | getViewport () const |
Returns the current viewport as a convenient single object. | |
const SbViewportRegion & | getViewportRegion () const |
Returns the actual viewport in pixels. | |
const SbVec4f & | getViewportPixels () const |
Returns the actual viewport in pixels. | |
void | enableEventHandling (SbBool onoff) |
Enable handling events. | |
SceneView () | |
Constructor. | |
Public Member Functions inherited from SoSeparator | |
SoSeparator () | |
Creates a separator node with default settings. | |
SoSeparator (int nChildren) | |
Constructor that takes approximate number of children. | |
Public Member Functions inherited from SoGroup | |
SoGroup () | |
Creates an empty group node. | |
SoGroup (int nChildren) | |
Constructor that takes approximate number of children. | |
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 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 void | initClass () |
Initialize the class. | |
static void | exitClass () |
Finish using the class. | |
Static Public Member Functions inherited from SoSeparator | |
static SoType | getClassTypeId () |
Returns the type identifier for this class. | |
Static Public Member Functions inherited from SoGroup | |
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 | |
SoSFVec2f | viewportOrigin |
Viewport origin (normalized device coordinates 0..1). | |
SoSFVec2f | viewportSize |
Viewport size (normalized device coordinates 0..1). | |
SoSFBool | active |
Enable rendering the view. | |
SoSFBool | drawBorder |
Enable drawing a border around the view's viewport. | |
Public Attributes inherited from SoSeparator | |
SoSFEnum | boundingBoxCaching |
Whether to cache during bounding box traversal. | |
SoSFEnum | renderCulling |
Whether to cull during rendering traversal. | |
SoSFEnum | pickCulling |
Whether to cull during picking traversal. | |
SoSFEnum | fastEditing |
Specifies the fast edit mode of the separator node. | |
SoSFInt32 | renderUnitId |
Used during the ScaleViz depth compositing process, this field specifies which render unit (OIRU) will render the sub scene graph below this separator. | |
SoDEPRECATED SoSFEnum | renderCaching |
Whether to cache during rendering traversal. | |
Public Attributes inherited from SoGroup | |
SoSFBool | boundingBoxIgnoring |
Whether to ignore this node during bounding box traversal. | |
Additional Inherited Members | |
Public Types inherited from SoSeparator | |
enum | CacheEnabled { OFF , ON , AUTO } |
Possible values for caching. More... | |
enum | FastEditing { DISABLE = 0x01 , KEEP_ZBUFFER = 0x02 , CLEAR_ZBUFFER = 0x03 } |
Fast editing policy enumeration values. More... | |
(Preview feature) [Medical] Defines a view for use with ViewManager.
This class defines a "view" consisting of a viewport (subregion) inside the render area, a scene graph to be rendered and an optional border.
This class is conceptually similar to the older class PoSceneView, but is designed to be used with the Viewer Component classes, specifically SceneExaminer, and with the ViewManager class.
Usually the specified scene graph will contain its own camera node and one or more light nodes. If the user should be able to manipulate the camera, we recommend adding a SceneExaminer node (which automatically creates a camera, headlight and event handlers) and then setting the actual scene to be rendered as a child of the SceneExaminer.
Normally the SceneView node(s) should be added as children of a ViewManager node. This is not required if no nodes in the view need to handle events, for example if the view is an orientation indicator or bird's eye view and its camera is linked to a main camera. However the ViewManager node is needed to deliver events to its SceneView children based on the position of the event and the order of the SceneView children. The SoHandleEventAction will only be allowed to traverse a SceneView node's scene graph if the event position is inside that SceneView's viewport or the SceneView has "captured" events. See ViewManager for more details.
Note that the specified viewport is relative to the node's inherited viewport. For the "first level" of SceneView nodes the viewport is relative to the entire render area, as expected. However this feature allows the powerful capability to "nest" SceneView nodes. If a SceneView node is the child of another SceneView node, the child's viewport is relative to the viewport set by the parent node. For example, one quadrant of the render area could be subdivided into multiple smaller viewports to create a "light box" view. The viewport definition may be dynamically changed to create a different layout of views. For example four equal size viewports can be dynamically changed to one large viewport plus three small viewports. The convenience methods in the ViewManager node make it easy to modify the view layout.
The active field can be used to prevent a view from being rendered. This is convenient, for example, when switching from a four view layout to a one or two view layout. In this case it is not necessary to remove the inactive SceneView nodes from their parent ViewManager, just set 'active' to false.
Data nodes, e.g. SoVolumeData, that are shared by multiple views may be placed in the scene graph above the ViewManager node. But note that in most cases Open Inventor cannot compute the correct bounding box without traversing the data node. This means that calling viewAll() on the SceneExaminer inside a view will compute the correct view volume. You can work around this by placing an SoBBox node under the SceneView and setting its 'boundingBox' field to (for example) the extent of the SoVolumeData node. Alternatively you can create one instance of the data node and add that instance under the SceneExaminer in each view that needs that data. In this case the viewAll() should work as expected. Do not create a separate instance of the data node for each view as this will cause the data to be loaded multiple times.
Tiling: Even when working in normalized coordinates it is necessary to take some care about the size of the viewports in pixels. For example, if the render area is 1024 pixels wide, then creating two tiles (viewports) with width 0.5 will result in two non-overlapping viewports, each 512 pixels wide as expected. But 1024 is not evenly divisible by 3, so creating three tiles with width 0.3333 means that each tile will be 341 pixels wide and 3 * 341 = 1023, leaving a 1 pixel gap. In this case it is necessary to make one of the viewports 1 pixel larger than the others. The width of 1 pixel in normalized coordinates is simply 1 / widthOfParentViewport (in pixels).
Limitations:
viewportOrigin | 0 0 |
viewportSize | 1 1 |
scene | NULL |
active | TRUE |
drawBorder | TRUE |
Definition at line 132 of file SceneView.h.
SceneView::SceneView | ( | ) |
Constructor.
void SceneView::enableEventHandling | ( | SbBool | onoff | ) |
Enable handling events.
Default is true. This method is used by the ViewManager node to temporarily disable event handling without triggering notification. Generally the application should not call this method directly.
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static |
Finish using the class.
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static |
Returns the type identifier for this class.
|
virtual |
Returns the type identifier for this specific instance.
Reimplemented from SoSeparator.
const SbVec4f & SceneView::getViewport | ( | ) | const |
Returns the current viewport as a convenient single object.
const SbVec4f & SceneView::getViewportPixels | ( | ) | const |
Returns the actual viewport in pixels.
const SbViewportRegion & SceneView::getViewportRegion | ( | ) | const |
Returns the actual viewport in pixels.
Convenient to use with (for example) viewAll().
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static |
Initialize the class.
void SceneView::setViewport | ( | const SbVec4f & | viewport | ) |
Convenience method to set viewport in normalized coordinates with one call.
Modifies the 'viewportOrig' and 'viewportSize' fields.
void SceneView::setViewport | ( | float | origX, |
float | origY, | ||
float | sizeX, | ||
float | sizeY | ||
) |
Convenience method to set viewport in normalized coordinates with one call.
Modifies the 'viewportOrig' and 'viewportSize' fields.
SoSFBool SceneView::active |
SoSFBool SceneView::drawBorder |
Enable drawing a border around the view's viewport.
Default is true.
Definition at line 162 of file SceneView.h.
SoSFVec2f SceneView::viewportOrigin |
Viewport origin (normalized device coordinates 0..1).
Default is 0,0. Illegal values, e.g. < 0 or > 1, are clamped to 0..1.
Definition at line 142 of file SceneView.h.
SoSFVec2f SceneView::viewportSize |
Viewport size (normalized device coordinates 0..1).
Default is 1,1. Illegal values, e.g. < 0 or > 1, are clamped to 0..1.
Definition at line 148 of file SceneView.h.