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
SoVRMLCone (void)
virtual void GLRender (SoGLRenderAction *action)
virtual void rayPick (SoRayPickAction *action)
virtual void getPrimitiveCount (SoGetPrimitiveCountAction *action)
Static Public Member Functions
static void initClass (void)
Public Attributes
SoSFFloat bottomRadius
SoSFFloat height
SoSFBool side
SoSFBool bottom
Protected Member Functions
virtual ~SoVRMLCone ()
virtual void generatePrimitives (SoAction *action)
virtual void computeBBox (SoAction *action, SbBox3f &box, SbVec3f
¢er)
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
}
.fi
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
void SoVRMLCone::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 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 &
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 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.