SoCylinder(3)

NAME
SoCylinder - The SoCylinder class is for rendering cylinder shapes.

SYNOPSIS

#include <Inventor/nodes/SoCylinder.h>

Inherits SoShape.

  Public Types
enum Part { SIDES = 0x1, TOP = 0x2, BOTTOM = 0x4, ALL = SIDES|TOP|BOTTOM }
Public Types inherited from SoShape
enum TriangleShape { TRIANGLE_STRIP, TRIANGLE_FAN, TRIANGLES, POLYGON, QUADS, QUAD_STRIP, POINTS, LINES, LINE_STRIP }
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 }

  Public Member Functions
virtual SoType getTypeId (void) const
SoCylinder (void)
void addPart (SoCylinder::Part part)
void removePart (SoCylinder::Part part)
SbBool hasPart (SoCylinder::Part part) const
virtual void rayPick (SoRayPickAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
virtual void GLRender (SoGLRenderAction *action)
Public Member Functions inherited from SoShape
virtual SbBool affectsState (void) const
virtual void notify (SoNotList *nl)
virtual void getBoundingBox (SoGetBoundingBoxAction *action)
virtual void callback (SoCallbackAction *action)
const SoBoundingBoxCache * getBoundingBoxCache (void) const
Public Member Functions inherited from SoNode
void setOverride (const SbBool state)
SbBool isOverride (void) const
void setNodeType (const NodeType type)
NodeType getNodeType (void) const
virtual SoNode * copy (SbBool copyconnections=FALSE) const
virtual void doAction (SoAction *action)
virtual void GLRenderBelowPath (SoGLRenderAction *action)
virtual void GLRenderInPath (SoGLRenderAction *action)
virtual void GLRenderOffPath (SoGLRenderAction *action)
virtual void getMatrix (SoGetMatrixAction *action)
virtual void handleEvent (SoHandleEventAction *action)
virtual void pick (SoPickAction *action)
virtual void search (SoSearchAction *action)
virtual void write (SoWriteAction *action)
virtual void audioRender (SoAudioRenderAction *action)
virtual void grabEventsSetup (void)
virtual void grabEventsCleanup (void)
virtual void startNotify (void)
SbUniqueId getNodeId (void) const
virtual SoChildList * getChildren (void) const
virtual void writeInstance (SoOutput *out)
virtual SoNode * addToCopyDict (void) const
virtual void copyContents (const SoFieldContainer *from, SbBool copyconnections)
virtual SoFieldContainer * copyThroughConnection (void) const
Public Member Functions inherited from SoFieldContainer
void setToDefaults (void)
SbBool hasDefaultValues (void) const
SbBool fieldsAreEqual (const SoFieldContainer *container) const
void copyFieldValues (const SoFieldContainer *container, SbBool copyconnections=FALSE)
SbBool set (const char *const fielddata)
void get (SbString &fielddata)
virtual int getFields (SoFieldList &l) const
virtual int getAllFields (SoFieldList &l) const
virtual SoField * getField (const SbName &name) const
virtual SoField * getEventIn (const SbName &name) const
virtual SoField * getEventOut (const SbName &name) const
SbBool getFieldName (const SoField *const field, SbName &name) const
SbBool enableNotify (const SbBool flag)
SbBool isNotifyEnabled (void) const
SbBool set (const char *fielddata, SoInput *input)
void get (SbString &fielddata, SoOutput *out)
virtual SbBool validateNewFieldValue (SoField *field, void *newval)
virtual void addWriteReference (SoOutput *out, SbBool isfromfield=FALSE)
SbBool getIsBuiltIn (void) const
virtual void getFieldsMemorySize (size_t &managed, size_t &unmanaged) const
void setUserData (void *userdata) const
void * getUserData (void) const
Public Member Functions inherited from SoBase
void ref (void) const
void unref (void) const
void unrefNoDelete (void) const
int32_t getRefCount (void) const
void touch (void)
SbBool isOfType (SoType type) const
Returns TRUE if the type of this object is either of the same type or inherited from type.
virtual SbName getName (void) const
virtual void setName (const SbName &newname)
void addAuditor (void *const auditor, const SoNotRec::Type type)
void removeAuditor (void *const auditor, const SoNotRec::Type type)
const SoAuditorList & getAuditors (void) const
SbBool shouldWrite (void)
void assertAlive (void) const

  Static Public Member Functions
static SoType getClassTypeId (void)
static void initClass (void)
Static Public Member Functions inherited from SoShape
static SoType getClassTypeId (void)
static void initClass (void)
Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
static void getScreenSize (SoState *const state, const SbBox3f &boundingbox, SbVec2s &rectsize)
static float getDecimatedComplexity (SoState *state, float complexity)
Static Public Member Functions inherited from SoNode
static uint32_t getCompatibilityTypes (const SoType &nodetype)
static SoType getClassTypeId (void)
static SoNode * getByName (const SbName &name)
static int getByName (const SbName &name, SoNodeList &l)
static void initClass (void)
Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
static void initClasses (void)
static SbUniqueId getNextNodeId (void)
static int getActionMethodIndex (const SoType type)
static void getBoundingBoxS (SoAction *action, SoNode *node)
static void GLRenderS (SoAction *action, SoNode *node)
static void callbackS (SoAction *action, SoNode *node)
static void getMatrixS (SoAction *action, SoNode *node)
static void handleEventS (SoAction *action, SoNode *node)
static void pickS (SoAction *action, SoNode *node)
static void rayPickS (SoAction *action, SoNode *node)
static void searchS (SoAction *action, SoNode *node)
static void writeS (SoAction *action, SoNode *node)
static void audioRenderS (SoAction *action, SoNode *node)
static void getPrimitiveCountS (SoAction *action, SoNode *node)
Static Public Member Functions inherited from SoFieldContainer
static void initClass (void)
Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
static SoType getClassTypeId (void)
This static method returns the SoType object associated with objects of this class.
static void cleanupClass (void)
static void initCopyDict (void)
static void addCopy (const SoFieldContainer *orig, const SoFieldContainer *copy)
static SoFieldContainer * checkCopy (const SoFieldContainer *orig)
static SoFieldContainer * findCopy (const SoFieldContainer *orig, const SbBool copyconnections)
static void copyDone (void)
Static Public Member Functions inherited from SoBase
static void initClass (void)
Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.
static SoType getClassTypeId (void)
This static method returns the SoType object associated with objects of this class.
static void addName (SoBase *const base, const char *const name)
static void removeName (SoBase *const base, const char *const name)
static void incrementCurrentWriteCounter (void)
static void decrementCurrentWriteCounter (void)
static SoBase * getNamedBase (const SbName &name, SoType type)
static int getNamedBases (const SbName &name, SoBaseList &baselist, SoType type)
static SbBool read (SoInput *input, SoBase *&base, SoType expectedtype)
static void setInstancePrefix (const SbString &c)
static void setTraceRefs (SbBool trace)
static SbBool getTraceRefs (void)
static SbBool connectRoute (SoInput *input, const SbName &fromnodename, const SbName &fromfieldname, const SbName &tonodename, const SbName &tofieldname)
static SbBool readRoute (SoInput *input)

  Public Attributes
SoSFFloat radius
SoSFFloat height
SoSFBitMask parts

  Protected Member Functions
virtual const SoFieldData * getFieldData (void) const
virtual ~SoCylinder ()
virtual void generatePrimitives (SoAction *action)
virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)
Protected Member Functions inherited from SoShape
SoShape (void)
virtual ~SoShape ()
float getComplexityValue (SoAction *action)
virtual SbBool shouldGLRender (SoGLRenderAction *action)
void beginSolidShape (SoGLRenderAction *action)
void endSolidShape (SoGLRenderAction *action)
void GLRenderBoundingBox (SoGLRenderAction *action)
SbBool shouldPrimitiveCount (SoGetPrimitiveCountAction *action)
SbBool shouldRayPick (SoRayPickAction *const action)
void computeObjectSpaceRay (SoRayPickAction *const action)
void computeObjectSpaceRay (SoRayPickAction *const action, const SbMatrix &matrix)
virtual SoDetail * createTriangleDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, const SoPrimitiveVertex *v3, SoPickedPoint *pp)
virtual SoDetail * createLineSegmentDetail (SoRayPickAction *action, const SoPrimitiveVertex *v1, const SoPrimitiveVertex *v2, SoPickedPoint *pp)
virtual SoDetail * createPointDetail (SoRayPickAction *action, const SoPrimitiveVertex *v, SoPickedPoint *pp)
void invokeTriangleCallbacks (SoAction *const action, const SoPrimitiveVertex *const v1, const SoPrimitiveVertex *const v2, const SoPrimitiveVertex *const v3)
void invokeLineSegmentCallbacks (SoAction *const action, const SoPrimitiveVertex *const v1, const SoPrimitiveVertex *const v2)
void invokePointCallbacks (SoAction *const action, const SoPrimitiveVertex *const v)
void beginShape (SoAction *const action, const TriangleShape shapetype, SoDetail *const detail=NULL)
void shapeVertex (const SoPrimitiveVertex *const v)
void endShape (void)
void generateVertex (SoPrimitiveVertex *const pv, const SbVec3f &point, const SbBool useTexFunc, const SoMultiTextureCoordinateElement *const tce, const float s, const float t, const SbVec3f &normal)
void generateVertex (SoPrimitiveVertex *const pv, const SbVec3f &point, const SbBool useTexFunc, const SoMultiTextureCoordinateElement *const tce, const float s, const float t, const float r, const SbVec3f &normal)
SbBool startVertexArray (SoGLRenderAction *action, const SoCoordinateElement *coords, const SbVec3f *pervertexnormals, const SbBool texpervertex, const SbBool colorpervertex)
void finishVertexArray (SoGLRenderAction *action, const SbBool vbo, const SbBool normpervertex, const SbBool texpervertex, const SbBool colorpervertex)
Protected Member Functions inherited from SoNode
SoNode (void)
virtual ~SoNode ()
virtual SbBool readInstance (SoInput *in, unsigned short flags)
Protected Member Functions inherited from SoFieldContainer
SoFieldContainer (void)
virtual ~SoFieldContainer ()
Protected Member Functions inherited from SoBase
SoBase (void)
virtual ~SoBase ()
virtual void destroy (void)
SbBool hasMultipleWriteRefs (void) const
SbBool writeHeader (SoOutput *out, SbBool isgroup, SbBool isengine) const
void writeFooter (SoOutput *out) const
virtual const char * getFileFormatName (void) const
virtual SoNotRec createNotRec (void)

  Static Protected Member Functions
static const SoFieldData ** getFieldDataPtr (void)
Static Protected Member Functions inherited from SoShape
static const SoFieldData ** getFieldDataPtr (void)
Static Protected Member Functions inherited from SoNode
static const SoFieldData ** getFieldDataPtr (void)
static void setNextActionMethodIndex (int index)
static int getNextActionMethodIndex (void)
static void incNextActionMethodIndex (void)
static void setCompatibilityTypes (const SoType &nodetype, const uint32_t bitmask)
Static Protected Member Functions inherited from SoBase
static uint32_t getCurrentWriteCounter (void)
static void staticDataLock (void)
static void staticDataUnlock (void)

  Additional Inherited Members
Protected Types inherited from SoBase
enum BaseFlags { IS_ENGINE = 0x01, IS_GROUP = 0x02 }
Protected Attributes inherited from SoNode
SbUniqueId uniqueId
Protected Attributes inherited from SoFieldContainer
SbBool isBuiltIn
Static Protected Attributes inherited from SoNode
static SbUniqueId nextUniqueId = 1
static int nextActionMethodIndex = 0

Detailed Description

The SoCylinder class is for rendering cylinder shapes. Insert a cylinder shape into the scene graph. The cylinder is rendered with the current material, texture and draw style settings (if any, otherwise the default settings are used).

The SoCylinder node class is provided as a convenient abstraction for the application programmer to use "complex" shapes of this type without having to do the tessellation to polygons and other low level programming herself.

A cylinder is visualized by the underlying rendering system by first tessellating the conceptual cylinder into a set of polygons. To control the trade-off between an as much as possible correct visual appearance of the cylinder versus fast rendering, use an SoComplexity node to influence the number of polygons generated from the tessellation process. (The higher the complexity value, the more polygons will be generated, the more rounded the sides of the cylinder will look.) Set the SoComplexity::value field to what you believe would be a good trade-off between correctness and speed for your particular application.

A nice trick for rendering a disc is to render an SoCylinder with SoCylinder::height set to zero:

#Inventor V2.1 ascii
ShapeHints { # to get two-sided lighting on the disc
   vertexOrdering COUNTERCLOCKWISE
   shapeType UNKNOWN_SHAPE_TYPE
}
Cylinder {
   height 0
   parts TOP
}

FILE FORMAT/DEFAULTS:

Cylinder {
    radius 1
    height 2
    parts (SIDES | TOP | BOTTOM)
}

See also
    SoCone, SoSphere, SoCube

Member Enumeration Documentation

  enum SoCylinder::Part
Enumerates the various parts of the cylinder, for setting inclusion or exclusion from the shape.

Enumerator

SIDES
    Sides of cylinder.

TOP Top of cylinder.

BOTTOM
    Bottom of cylinder.

ALL All parts.

Constructor & Destructor Documentation

  SoCylinder::SoCylinder (void )
Constructor.

  SoCylinder::~SoCylinder () [protected], [virtual]
Destructor.

Member Function Documentation

  SoType SoCylinder::getClassTypeId (void ) [static]
This static method returns the SoType object associated with objects of this class.

  SoType SoCylinder::getTypeId (void ) const [virtual]
Returns the type identification of an object derived from a class inheriting SoBase. This is used for runtime type checking and "downward" casting.

Reimplemented from SoShape.

  const SoFieldData ** SoCylinder::getFieldDataPtr (void ) [static], [protected]
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.

  const SoFieldData * SoCylinder::getFieldData (void ) const [protected], [virtual]
Returns a pointer to the class-wide field data storage object for this instance. If no fields are present, returns NULL.

Reimplemented from SoShape.

  void SoCylinder::initClass (void ) [static]

  void SoCylinder::addPart (SoCylinder::Part part)
Add a part to the cylinder.

See also
    removePart(), hasPart()

  void SoCylinder::removePart (SoCylinder::Part part)
Remove a part from the cylinder.

See also
    addPart(), hasPart()

  SbBool SoCylinder::hasPart (SoCylinder::Part part) const
Returns TRUE if rendering of the given part is currently turned on.

See also
    addPart(), removePart()

  void SoCylinder::rayPick (SoRayPickAction * action) [virtual]
Calculates picked point based on primitives generated by subclasses.

Reimplemented from SoShape.

  void SoCylinder::getPrimitiveCount (SoGetPrimitiveCountAction * action) [virtual]
Action method for the SoGetPrimitiveCountAction.

Calculates the number of triangle, line segment and point primitives for the node and adds these to the counters of the action.

Nodes influencing how geometry nodes calculate their primitive count also override this method to change the relevant state variables.

Reimplemented from SoShape.

  void SoCylinder::GLRender (SoGLRenderAction * action) [virtual]
Action method for the SoGLRenderAction.

This is called during rendering traversals. Nodes influencing the rendering state in any way or want to throw geometry primitives at OpenGL override this method.

Reimplemented from SoShape.

  void SoCylinder::generatePrimitives (SoAction * action) [protected], [virtual]
The method implements action behavior for shape nodes for SoCallbackAction. It is invoked from SoShape::callback(). (Subclasses should not override SoNode::callback().)

The subclass implementations uses the convenience methods SoShape::beginShape(), SoShape::shapeVertex(), and SoShape::endShape(), with SoDetail instances, to pass the primitives making up the shape back to the caller.

Implements SoShape.

  void SoCylinder::computeBBox (SoAction * action, SbBox3f & box, SbVec3f & center) [protected], [virtual]
Implemented by SoShape subclasses to let the SoShape superclass know the exact size and weighted center point of the shape's bounding box.

The bounding box and center point should be calculated and returned in the local coordinate system.

The method implements action behavior for shape nodes for SoGetBoundingBoxAction. It is invoked from SoShape::getBoundingBox(). (Subclasses should not override SoNode::getBoundingBox().)

The box parameter sent in is guaranteed to be an empty box, while center is undefined upon function entry.

Implements SoShape.

Member Data Documentation

  SoSFFloat SoCylinder::radius
Radius of cylinder. Default value 1.0.

  SoSFFloat SoCylinder::height
Height of cylinder. Default is 2.0.

  SoSFBitMask SoCylinder::parts
Which parts to use for rendering, picking, etc. Defaults to SoCylinder::ALL.

Author

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