Irrlicht 3D Engine
irr::core::plane3d< T > Class Template Reference

Template plane class with some intersection testing methods. More...

#include <plane3d.h>

Public Member Functions

 plane3d ()
 
 plane3d (const vector3d< T > &MPoint, const vector3d< T > &Normal)
 
 plane3d (T px, T py, T pz, T nx, T ny, T nz)
 
 plane3d (const vector3d< T > &point1, const vector3d< T > &point2, const vector3d< T > &point3)
 
 plane3d (const vector3d< T > &normal, const T d)
 
EIntersectionRelation3D classifyPointRelation (const vector3d< T > &point) const
 Classifies the relation of a point to this plane. More...
 
bool existsIntersection (const plane3d< T > &other) const
 Tests if there is an intersection with the other plane. More...
 
getDistanceTo (const vector3d< T > &point) const
 Get the distance to a point. More...
 
bool getIntersectionWithLimitedLine (const vector3d< T > &linePoint1, const vector3d< T > &linePoint2, vector3d< T > &outIntersection) const
 Get an intersection with a 3d line, limited between two 3d points. More...
 
bool getIntersectionWithLine (const vector3d< T > &linePoint, const vector3d< T > &lineVect, vector3d< T > &outIntersection) const
 Get an intersection with a 3d line. More...
 
bool getIntersectionWithPlane (const plane3d< T > &other, vector3d< T > &outLinePoint, vector3d< T > &outLineVect) const
 Intersects this plane with another. More...
 
bool getIntersectionWithPlanes (const plane3d< T > &o1, const plane3d< T > &o2, vector3d< T > &outPoint) const
 Get the intersection point with two other planes if there is one. More...
 
f32 getKnownIntersectionWithLine (const vector3d< T > &linePoint1, const vector3d< T > &linePoint2) const
 Get percentage of line between two points where an intersection with this plane happens. More...
 
vector3d< T > getMemberPoint () const
 Gets a member point of the plane. More...
 
bool isFrontFacing (const vector3d< T > &lookDirection) const
 Test if the triangle would be front or backfacing from any point. More...
 
bool operator!= (const plane3d< T > &other) const
 
bool operator== (const plane3d< T > &other) const
 
void recalculateD (const vector3d< T > &MPoint)
 Recalculates the distance from origin by applying a new member point to the plane. More...
 
void setPlane (const vector3d< T > &point, const vector3d< T > &nvector)
 
void setPlane (const vector3d< T > &nvect, T d)
 
void setPlane (const vector3d< T > &point1, const vector3d< T > &point2, const vector3d< T > &point3)
 

Public Attributes

D
 Distance from origin. More...
 
vector3d< T > Normal
 Normal vector of the plane. More...
 

Detailed Description

template<class T>
class irr::core::plane3d< T >

Template plane class with some intersection testing methods.

It has to be ensured, that the normal is always normalized. The constructors and setters of this class will not ensure this automatically. So any normal passed in has to be normalized in advance. No change to the normal will be made by any of the class methods.

Definition at line 33 of file plane3d.h.

Constructor & Destructor Documentation

§ plane3d() [1/5]

template<class T>
irr::core::plane3d< T >::plane3d ( )
inline

Definition at line 39 of file plane3d.h.

§ plane3d() [2/5]

template<class T>
irr::core::plane3d< T >::plane3d ( const vector3d< T > &  MPoint,
const vector3d< T > &  Normal 
)
inline

Definition at line 41 of file plane3d.h.

§ plane3d() [3/5]

template<class T>
irr::core::plane3d< T >::plane3d ( px,
py,
pz,
nx,
ny,
nz 
)
inline

Definition at line 43 of file plane3d.h.

§ plane3d() [4/5]

template<class T>
irr::core::plane3d< T >::plane3d ( const vector3d< T > &  point1,
const vector3d< T > &  point2,
const vector3d< T > &  point3 
)
inline

Definition at line 45 of file plane3d.h.

§ plane3d() [5/5]

template<class T>
irr::core::plane3d< T >::plane3d ( const vector3d< T > &  normal,
const T  d 
)
inline

Definition at line 48 of file plane3d.h.

Member Function Documentation

§ classifyPointRelation()

template<class T>
EIntersectionRelation3D irr::core::plane3d< T >::classifyPointRelation ( const vector3d< T > &  point) const
inline

Classifies the relation of a point to this plane.

Parameters
pointPoint to classify its relation.
Returns
ISREL3D_FRONT if the point is in front of the plane, ISREL3D_BACK if the point is behind of the plane, and ISREL3D_PLANAR if the point is within the plane.

Definition at line 135 of file plane3d.h.

§ existsIntersection()

template<class T>
bool irr::core::plane3d< T >::existsIntersection ( const plane3d< T > &  other) const
inline

Tests if there is an intersection with the other plane.

Returns
True if there is a intersection.

Definition at line 162 of file plane3d.h.

§ getDistanceTo()

template<class T>
T irr::core::plane3d< T >::getDistanceTo ( const vector3d< T > &  point) const
inline

Get the distance to a point.

Note that this only works if the normal is normalized.

Definition at line 222 of file plane3d.h.

§ getIntersectionWithLimitedLine()

template<class T>
bool irr::core::plane3d< T >::getIntersectionWithLimitedLine ( const vector3d< T > &  linePoint1,
const vector3d< T > &  linePoint2,
vector3d< T > &  outIntersection 
) const
inline

Get an intersection with a 3d line, limited between two 3d points.

Parameters
linePoint1Point 1 of the line.
linePoint2Point 2 of the line.
outIntersectionPlace to store the intersection point, if there is one.
Returns
True if there was an intersection, false if there was not.

Definition at line 121 of file plane3d.h.

§ getIntersectionWithLine()

template<class T>
bool irr::core::plane3d< T >::getIntersectionWithLine ( const vector3d< T > &  linePoint,
const vector3d< T > &  lineVect,
vector3d< T > &  outIntersection 
) const
inline

Get an intersection with a 3d line.

Parameters
lineVectVector of the line to intersect with.
linePointPoint of the line to intersect with.
outIntersectionPlace to store the intersection point, if there is one.
Returns
True if there was an intersection, false if there was not.

Definition at line 86 of file plane3d.h.

Referenced by irr::core::plane3d< f32 >::getIntersectionWithLimitedLine(), and irr::core::plane3d< f32 >::getIntersectionWithPlanes().

§ getIntersectionWithPlane()

template<class T>
bool irr::core::plane3d< T >::getIntersectionWithPlane ( const plane3d< T > &  other,
vector3d< T > &  outLinePoint,
vector3d< T > &  outLineVect 
) const
inline

Intersects this plane with another.

Parameters
otherOther plane to intersect with.
outLinePointBase point of intersection line.
outLineVectVector of intersection.
Returns
True if there is a intersection, false if not.

Definition at line 173 of file plane3d.h.

Referenced by irr::core::plane3d< f32 >::getIntersectionWithPlanes().

§ getIntersectionWithPlanes()

template<class T>
bool irr::core::plane3d< T >::getIntersectionWithPlanes ( const plane3d< T > &  o1,
const plane3d< T > &  o2,
vector3d< T > &  outPoint 
) const
inline

§ getKnownIntersectionWithLine()

template<class T>
f32 irr::core::plane3d< T >::getKnownIntersectionWithLine ( const vector3d< T > &  linePoint1,
const vector3d< T > &  linePoint2 
) const
inline

Get percentage of line between two points where an intersection with this plane happens.

Only useful if known that there is an intersection.

Parameters
linePoint1Point1 of the line to intersect with.
linePoint2Point2 of the line to intersect with.
Returns
Where on a line between two points an intersection with this plane happened. For example, 0.5 is returned if the intersection happened exactly in the middle of the two points.

Definition at line 107 of file plane3d.h.

Referenced by irr::scene::SViewFrustum::clipLine().

§ getMemberPoint()

template<class T>
vector3d<T> irr::core::plane3d< T >::getMemberPoint ( ) const
inline

Gets a member point of the plane.

Definition at line 155 of file plane3d.h.

Referenced by irr::core::CMatrix4< T >::transformPlane().

§ isFrontFacing()

template<class T>
bool irr::core::plane3d< T >::isFrontFacing ( const vector3d< T > &  lookDirection) const
inline

Test if the triangle would be front or backfacing from any point.

Thus, this method assumes a camera position from which the triangle is definitely visible when looking into the given direction. Note that this only works if the normal is Normalized. Do not use this method with points as it will give wrong results!

Parameters
lookDirectionLook direction.
Returns
True if the plane is front facing and false if it is backfacing.

Definition at line 214 of file plane3d.h.

§ operator!=()

template<class T>
bool irr::core::plane3d< T >::operator!= ( const plane3d< T > &  other) const
inline

Definition at line 54 of file plane3d.h.

§ operator==()

template<class T>
bool irr::core::plane3d< T >::operator== ( const plane3d< T > &  other) const
inline

Definition at line 52 of file plane3d.h.

§ recalculateD()

template<class T>
void irr::core::plane3d< T >::recalculateD ( const vector3d< T > &  MPoint)
inline

Recalculates the distance from origin by applying a new member point to the plane.

Definition at line 149 of file plane3d.h.

Referenced by irr::core::plane3d< f32 >::plane3d(), and irr::core::plane3d< f32 >::setPlane().

§ setPlane() [1/3]

template<class T>
void irr::core::plane3d< T >::setPlane ( const vector3d< T > &  point,
const vector3d< T > &  nvector 
)
inline

§ setPlane() [2/3]

template<class T>
void irr::core::plane3d< T >::setPlane ( const vector3d< T > &  nvect,
d 
)
inline

Definition at line 64 of file plane3d.h.

§ setPlane() [3/3]

template<class T>
void irr::core::plane3d< T >::setPlane ( const vector3d< T > &  point1,
const vector3d< T > &  point2,
const vector3d< T > &  point3 
)
inline

Definition at line 70 of file plane3d.h.

Member Data Documentation

§ D

§ Normal


The documentation for this class was generated from the following file: