Coin
4.0.3
Coin3D core library

The SbPlane class represents a plane in 3D space. More...
#include <Inventor/SbLinear.h>
Public Member Functions  
SbPlane (const SbVec3f &normal, const float D)  
SbPlane (const SbVec3f &normal, const SbVec3f &point)  
SbPlane (const SbVec3f &p0, const SbVec3f &p1, const SbVec3f &p2)  
SbPlane (void)  
float  getDistance (const SbVec3f &point) const 
float  getDistanceFromOrigin (void) const 
const SbVec3f &  getNormal (void) const 
SbBool  intersect (const SbLine &l, SbVec3f &intersection) const 
SbBool  intersect (const SbPlane &pl, SbLine &line) const 
SbBool  isInHalfSpace (const SbVec3f &point) const 
void  offset (const float d) 
void  print (FILE *file) const 
void  transform (const SbMatrix &matrix) 
Related Symbols  
(Note that these are not member symbols.)  
int  operator!= (const SbPlane &p1, const SbPlane &p2) 
int  operator== (const SbPlane &p1, const SbPlane &p2) 
The SbPlane class represents a plane in 3D space.
SbPlane is used by many other classes in Coin. It provides a way of representing a plane, specified by a plane normal vector and a distance from the origin of the coordinate system.
SbPlane::SbPlane  (  void  ) 
An SbPlane instantiated with the default constructor will be uninitialized.
Construct an SbPlane instance with a normal pointing in the given direction and the given shortest distance from the origin of the coordinate system to a point in the plane.
normal must not be a null vector.
Construct an SbPlane with three points laying in the plane. Make sure p0, p1 and p2 are actually three distinct points, not on a line, when using this constructor.
Construct an SbPlane from a normal and a point laying in the plane.
normal must not be a null vector.
Return the distance from point to plane. Positive distance means the point is in the plane's halfspace.
This method is an extension specific to Coin versus the original SGI Inventor API.
float SbPlane::getDistanceFromOrigin  (  void  )  const 
Return distance from origin of coordinate system to the point in the plane which is closest to the origin.
Return the plane's normal vector, which indicates which direction the plane is oriented.
Find the point on given line l intersecting the plane and return it in intersection. If the line is parallel to the plane, we return FALSE
, otherwise TRUE
.
Do not pass an invalid line for the l parameter (i.e. with a null direction vector).
Intersect this plane with pl, and return the resulting line in line. Returns TRUE
if an intersection line can be found, and FALSE
if the planes are parallel.
Please note that the resulting SbLine must be considered as a line intersecting the SbLine's origin, extending infinitely in both directions.
This function is an extension for Coin, and it is not available in the original SGI Open Inventor v2.1 API.
Check if the given point lies in the halfspace of the plane which the plane normal vector is pointing.
Dump the state of this object to the fp file stream. Only works in debug version of library, method does nothing in an optimized build.
Check the two given planes for inequality.
Check the two given planes for equality.