Node that defines additional properties for rendering a NURBS surface. More...
#include <Inventor/nodes/SoNurbsProperty.h>
Public Types | |
enum | DrawStyle { NORMAL = 0x01 , BOUNDARIES_AND_TRIM_CURVES = 0x02 , CENTRAL_ISO_PARAM_CURVES = 0x04 } |
Draw style. More... | |
enum | TessellationType { CONSTANT , ADAPTIVE } |
Tesselation type. More... | |
Public Member Functions | |
virtual SoType | getTypeId () const |
Returns the type identifier for this specific instance. | |
SoNurbsProperty () | |
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 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 | |
SoSFBitMask | drawStyle |
Indicates which part of the NURBS surface to render. | |
SoSFInt32 | numSamplePoints |
numSamplePoints is used during trim curve tessellation. | |
SoSFColor | color |
Contains the color used to render trim curves and isoparametric curves. | |
SoSFUShort | isoParamCurvesPattern |
Sets a specific line pattern for isoparametric curves. | |
SoSFEnum | tessellationType |
Specifies the tessellation type. | |
SoSFFloat | tessellationDistance |
Used when tessellationType is set to ADAPTIVE. | |
SoSFFloat | tessellationAngle |
Used when tessellationType is set to ADAPTIVE. | |
Node that defines additional properties for rendering a NURBS surface.
This node defines an additional set of properties used by SoNurbsSurface when rendering NURBS surfaces.
For a large NURBS surface, it is sometimes more effective to display two central isoparametric curves rather than facet boundaries (as in wireframe mode) because the latter may provide an overly complicated view of the surface.
This node allows you to specify the NURBS draw style; the color of the trim curves, boundaries and isoparametric curves; the line pattern of the isoparametric curves; the number of sample points between trim curves control points; the type of tessellation; angle and distance for adaptive tessellation.
The NURBS draw style is a bitmask specifying which combination of the following representations to use for displaying the NURBS: normal display, trim curves and boundaries, and/or central isoparametric curves.
Turning off the normal NURBS surface display, and turning on the display of trim curves, boundaries and isoparametric curves can dramatically speed up rendering of large models.
When in ADAPTIVE tessellation mode, regions with a low curvature will be less tessellated than regions with a high curvature.
drawStyle | NORMAL |
numSamplePoints | -1 |
color | 1 1 1 |
isoParamCurvesPattern | 0xFFFF |
tessellationType | CONSTANT |
tessellationDistance | 0.01 |
tessellationAngle | 0.35 |
Definition at line 91 of file SoNurbsProperty.h.
Draw style.
Definition at line 97 of file SoNurbsProperty.h.
Tesselation type.
Enumerator | |
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CONSTANT | The tessellation step size is constant and the same for both the U and V axes. The tessellation step size depends on SoComplexity::value. |
ADAPTIVE | The tessellation depends on the curvature of the geometry. Regions with a low curvature will be less tessellated than regions with a high curvature. |
Definition at line 114 of file SoNurbsProperty.h.
SoNurbsProperty::SoNurbsProperty | ( | ) |
Constructor.
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static |
Returns the type identifier for this class.
|
virtual |
Returns the type identifier for this specific instance.
Reimplemented from SoNode.
SoSFColor SoNurbsProperty::color |
Contains the color used to render trim curves and isoparametric curves.
Definition at line 148 of file SoNurbsProperty.h.
SoSFBitMask SoNurbsProperty::drawStyle |
Indicates which part of the NURBS surface to render.
Use enum DrawStyle. Default is NORMAL.
Definition at line 133 of file SoNurbsProperty.h.
SoSFUShort SoNurbsProperty::isoParamCurvesPattern |
Sets a specific line pattern for isoparametric curves.
Definition at line 153 of file SoNurbsProperty.h.
SoSFInt32 SoNurbsProperty::numSamplePoints |
numSamplePoints is used during trim curve tessellation.
It specifies the exact number of points to generate between two trim curve control points. If set to -1 (the default), the number of points generated is computed from the SoComplexity node. Setting this field to a small value (less than 3) can reduce the number of triangles generated by the tessellation and thus increase the drawing performance of trimmed NURBS surfaces.
Definition at line 143 of file SoNurbsProperty.h.
SoSFFloat SoNurbsProperty::tessellationAngle |
Used when tessellationType is set to ADAPTIVE.
Specifies the maximum angle (in radians) between the normals of two adjacent tessellated faces. Decreasing this value adds more tessellation points on flat parts of the surface. Default value is 0.35
NOTE: field available since Open Inventor 6.0
Definition at line 183 of file SoNurbsProperty.h.
SoSFFloat SoNurbsProperty::tessellationDistance |
Used when tessellationType is set to ADAPTIVE.
The maximum tessellation step size (curvilinear distance) is this fraction of the diagonal of the bounding box of the surface or the group of surfaces (SoNurbsGroup). Increasing this value make the tessellation more dependent on tessellationAngle. Default value is 0.01. That is, the distance must not be more than 1% of the diagonal of the bounding box.
NOTE: field available since Open Inventor 6.0
Definition at line 173 of file SoNurbsProperty.h.
SoSFEnum SoNurbsProperty::tessellationType |
Specifies the tessellation type.
NOTE: field available since Open Inventor 6.0
Definition at line 161 of file SoNurbsProperty.h.