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NAME
SoVRMLCone -
The SoVRMLCone class is used to represent a Cone object.
The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is
copyright The Web3D Consortium, and is used by permission of the Consortium:
SYNOPSIS
#include <Inventor/VRMLnodes/SoVRMLCone.h>
Inherits SoVRMLGeometry.
Public Member Functions
virtual SoType getTypeId (void) const
Returns the type identification of an object derived from a class inheriting SoBase. This is used for
run-time type checking and 'downward' casting.
SoVRMLCone (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 bottomRadius
SoSFFloat height
SoSFBool side
SoSFBool bottom
Protected Member Functions
virtual const SoFieldData * getFieldData (void) const
virtual ~SoVRMLCone ()
virtual void generatePrimitives (SoAction *action)
virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f ¢er)
Static Protected Member Functions
static const SoFieldData ** getFieldDataPtr (void)
Additional Inherited Members
Detailed Description
The SoVRMLCone class is used to represent a Cone object.
The detailed class documentation is taken verbatim from the VRML97 standard (ISO/IEC 14772-1:1997). It is
copyright The Web3D Consortium, and is used by permission of the Consortium:
Cone {
field SFFloat bottomRadius 1 # (0, inf)
field SFFloat height 2 # (0, inf)
field SFBool side TRUE
field SFBool bottom TRUE
}
The Cone node specifies a cone which is centred in the local coordinate system and whose central axis is
aligned with the local Y-axis. The bottomRadius field specifies the radius of the cone's base, and the
height field specifies the height of the cone from the centre of the base to the apex. By default, the
cone has a radius of 1.0 at the bottom and a height of 2.0, with its apex at y = height/2 and its bottom
at y = -height/2. Both bottomRadius and height shall be greater than zero. Figure 6.3 illustrates the
Cone node.
Figure 6.3
The side field specifies whether sides of the cone are created and the bottom field specifies whether the
bottom cap of the cone is created. A value of TRUE specifies that this part of the cone exists, while a
value of FALSE specifies that this part does not exist (not rendered or eligible for collision or sensor
intersection tests). When a texture is applied to the sides of the cone, the texture wraps
counterclockwise (from above) starting at the back of the cone. The texture has a vertical seam at the
back in the X=0 plane, from the apex (0, height/2, 0) to the point (0, -height/2, - bottomRadius). For
the bottom cap, a circle is cut out of the texture square centred at (0, -height/2, 0) with dimensions (2
× bottomRadius) by (2 × bottomRadius). The bottom cap texture appears right side up when the top of the
cone is rotated towards the -Z-axis. SoVRMLTextureTransform affects the texture coordinates of the Cone.
The Cone geometry requires outside faces only. When viewed from the inside the results are undefined.
Constructor & Destructor Documentation
SoVRMLCone::SoVRMLCone (void)
Constructor.
SoVRMLCone::~SoVRMLCone () [protected], [virtual]
Destructor.
Member Function Documentation
SoType SoVRMLCone::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
}
}
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 SoVRMLGeometry.
const SoFieldData * SoVRMLCone::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 SoVRMLGeometry.
void SoVRMLCone::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 SoVRMLCone::rayPick (SoRayPickAction *action) [virtual]
Calculates picked point based on primitives generated by subclasses.
Reimplemented from SoShape.
void SoVRMLCone::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 SoVRMLCone::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 SoVRMLCone::computeBBox (SoAction *action, SbBox3f &box, SbVec3f ¢er) [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 SoVRMLCone::bottomRadius
The cone bottom radius. Default value is 1.0.
SoSFFloat SoVRMLCone::height
The cone height. Default value is 2.0.
SoSFBool SoVRMLCone::side
Enable/disable the cone side wall. Default value is TRUE.
SoSFBool SoVRMLCone::bottom
Enable/disable the cone bottom. Default value is TRUE.
Author
Generated automatically by Doxygen for Coin from the source code.
Version 4.0.0a Wed Feb 26 2014 SoVRMLCone(3)