man SoCube (Fonctions bibliothèques) -

NAME

SoCube -

SYNOPSIS



#include <Inventor/nodes/SoCube.h>

Inherits SoShape.

Detailed Description

The SoCube class is for rendering cubes.

Insert a cube shape into the scenegraph. The cube is rendered with the current material, texture and drawstyle settings (if any, otherwise the default settings are used).

(Strictly speaking, as you can have different width, height and depth values for the 'cube', instances of this class actually represents boxes.)

The SoCube node class is provided as a convenient abstraction for the application programmer to use 'complex' shapes of this type without having to do the calculation and book-keeping of the polygon sides and other low-level programming herself.

FILE FORMAT/DEFAULTS: 

    Cube {
        width 2
        height 2
        depth 2
    }

See also: SoCylinder, SoSphere, SoCone

Public Member Functions

virtual SoType getTypeId (void) const

SoCube (void)

virtual void GLRender (SoGLRenderAction *action)

virtual void rayPick (SoRayPickAction *action)

virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)

Static Public Member Functions

static SoType getClassTypeId (void)

static void initClass (void)

Public Attributes

SoSFFloat width

SoSFFloat height

SoSFFloat depth

Protected Member Functions

virtual const SoFieldData * getFieldData (void) const

virtual ~SoCube ()

virtual void generatePrimitives (SoAction *action)

virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f &center)

Static Protected Member Functions

static const SoFieldData ** getFieldDataPtr (void)

Constructor & Destructor Documentation

SoCube::SoCube (void)

Constructor.

SoCube::~SoCube () [protected, virtual]

Destructor.

Member Function Documentation

SoType SoCube::getClassTypeId (void) [static]

This static method returns the SoType object associated with objects of this class.

Reimplemented from SoShape.

SoType SoCube::getTypeId (void) const [virtual]

Returns the type identification of an object derived from a class inheriting SoBase. This is used for run-time type checking and 'downward' casting.

Usage example: 

  void foo(SoNode * node)
  {
    if (node->getTypeId() == SoFile::getClassTypeId()) {
      SoFile * filenode = (SoFile *)node;  // safe downward cast, knows the type
    }
    else if (node->getTypeId().isOfType(SoGroup::getClassTypeId())) {
      SoGroup * group = (SoGroup *)node;  // safe downward cast, knows the type
    }
  }

For application programmers wanting to extend the library with new nodes, engines, nodekits, draggers or others: this method needs to be overridden in all subclasses. This is typically done as part of setting up the full type system for extension classes, which is usually accomplished by using the pre-defined macros available through for instance Inventor/nodes/SoSubNode.h (SO_NODE_INIT_CLASS and SO_NODE_CONSTRUCTOR for node classes), Inventor/engines/SoSubEngine.h (for engine classes) and so on.

For more information on writing Coin extensions, see the class documentation of the toplevel superclasses for the various class groups.

Reimplemented from SoShape.

const SoFieldData ** SoCube::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.

Reimplemented from SoShape.

const SoFieldData * SoCube::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 SoCube::initClass (void) [static]

Sets up initialization for data common to all instances of this class, like submitting necessary information to the Coin type system.

Reimplemented from SoShape.

void SoCube::GLRender (SoGLRenderAction * action) [virtual]

Action method for the SoGLRenderAction.

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

Reimplemented from SoShape.

void SoCube::rayPick (SoRayPickAction * action) [virtual]

Calculates picked point based on primitives generated by subclasses.

Reimplemented from SoShape.

void SoCube::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 calculates their primitive count also overrides this method to change the relevant state variables.

Reimplemented from SoShape.

void SoCube::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 SoCube::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 SoCube::width

X axis dimension of cube, defaults to 2.0.

SoSFFloat SoCube::height

Y axis dimension of cube, defaults to 2.0.

SoSFFloat SoCube::depth

Z axis dimension of cube, defaults to 2.0.

Author

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