# csDIntersect3 Class Reference [Geometry utilities]

Some functions to perform various intersection calculations with 3D line segments. More...

`#include <csgeom/math3d_d.h>`

List of all members.

## Static Public Member Functions

static bool Plane (const csDVector3 &u, const csDVector3 &v, const csDPlane &p, csDVector3 &isect, double &dist)
Intersect a 3D segment with a plane.
static bool Plane (const csDVector3 &u, const csDVector3 &v, double A, double B, double C, double D, csDVector3 &isect, double &dist)
Intersect a 3D segment with a plane.
static void Plane (const csDVector3 &u, const csDVector3 &v, const csDVector3 &normal, const csDVector3 &a, csDVector3 &isect)
Intersect a 3D segment with a plane.
static bool Planes (const csDPlane &p1, const csDPlane &p2, const csDPlane &p3, csDVector3 &isect)
Intersect 3 planes, to get the point that is part of all three planes.
static double XFrustum (double A, const csDVector3 &u, const csDVector3 &v, csDVector3 &isect)
Intersect a 3D segment with the frustum plane Ax + z = 0.
static double YFrustum (double B, const csDVector3 &u, const csDVector3 &v, csDVector3 &isect)
Intersect a 3D segment with the frustum plane By + z = 0.
static double Z0Plane (const csDVector3 &u, const csDVector3 &v, csDVector3 &isect)
Intersect a 3D segment with the z = 0 plane.
static double ZPlane (double zval, const csDVector3 &u, const csDVector3 &v, csDVector3 &isect)
Intersect a 3D segment with the plane z = zval.

## Detailed Description

Some functions to perform various intersection calculations with 3D line segments.

This is a static class and contains only static member functions.

Definition at line 599 of file math3d_d.h.

## Member Function Documentation

 static bool csDIntersect3::Plane ( const csDVector3 & u, const csDVector3 & v, const csDPlane & p, csDVector3 & isect, double & dist ) ` [static]`

Intersect a 3D segment with a plane.

Returns true if there is an intersection, with the intersection point returned in isect. The distance from u to the intersection point is returned in dist. The distance that is returned is a normalized distance with respect to the given input vector. i.e. a distance of 0.5 means that the intersection point is halfway u and v.

 static bool csDIntersect3::Plane ( const csDVector3 & u, const csDVector3 & v, double A, double B, double C, double D, csDVector3 & isect, double & dist ) ` [static]`

Intersect a 3D segment with a plane.

Returns true if there is an intersection, with the intersection point returned in isect. The distance from u to the intersection point is returned in dist. The distance that is returned is a normalized distance with respect to the given input vector. i.e. a distance of 0.5 means that the intersection point is halfway u and v.

 static void csDIntersect3::Plane ( const csDVector3 & u, const csDVector3 & v, const csDVector3 & normal, const csDVector3 & a, csDVector3 & isect ) ` [static]`

Intersect a 3D segment with a plane.

Returns true if there is an intersection, with the intersection point returned in isect.

 static bool csDIntersect3::Planes ( const csDPlane & p1, const csDPlane & p2, const csDPlane & p3, csDVector3 & isect ) ` [static]`

Intersect 3 planes, to get the point that is part of all three planes.

Returns true, if there is a single point that fits. If some planes are parallel, then it will return false.

 static double csDIntersect3::XFrustum ( double A, const csDVector3 & u, const csDVector3 & v, csDVector3 & isect ) ` [static]`

Intersect a 3D segment with the frustum plane Ax + z = 0.

Assumes an intersection, and returns the intersection point in isect.

 static double csDIntersect3::YFrustum ( double B, const csDVector3 & u, const csDVector3 & v, csDVector3 & isect ) ` [static]`

Intersect a 3D segment with the frustum plane By + z = 0.

Assumes an intersection, and returns the intersection point in isect.

 static double csDIntersect3::Z0Plane ( const csDVector3 & u, const csDVector3 & v, csDVector3 & isect ) ` [static]`

Intersect a 3D segment with the z = 0 plane.

Assumes that there is an intersection (fails if the segment is parallel to the plane), and returns the distance from u to the intersection point. The intersection point is returned in isect.

 static double csDIntersect3::ZPlane ( double zval, const csDVector3 & u, const csDVector3 & v, csDVector3 & isect ) ` [static]`

Intersect a 3D segment with the plane z = zval.

Assumes that there is an intersection (fails if the segment is parallel to the plane), and returns the distance from u to the intersection point. The intersection point is returned in isect.

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

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