CGAL 6.1 - 2D and 3D Linear Geometry Kernel

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Functions
CGAL::do_intersect() (2D/3D Linear Kernel)
Reference Manual » Global Kernel Functions » Intersection Testing Functions - CGAL::do_intersect()

##

See also
  `CGAL::do_intersect() (2D Circular Kernel)`
  `CGAL::do_intersect() (3D Spherical Kernel)`
  `Intersection Computation Functions - CGAL::intersection()`

See Chapter 2D and 3D Geometry Kernel for details on a linear kernel instantiation.

## Functions
bool | CGAL::do_intersect (Type1< Kernel > obj1, Type2< Kernel > obj2)
| checks whether `obj1` and `obj2` intersect.
bool | CGAL::do_intersect (Plane_3< Kernel > obj1, Plane_3< Kernel > obj2, Plane_3< Kernel > obj3)
| checks whether `obj1`, `obj2` and `obj3` intersect.

## Function Documentation

## ◆ do_intersect()

bool CGAL::do_intersect | ( | Type1< Kernel > | obj1,
|  | Type2< Kernel > | obj2
| ) |  |

`#include <CGAL/intersections.h>`

checks whether `obj1` and `obj2` intersect.

Two objects `obj1` and `obj2` intersect if there is a point `p` that is part of both `obj1` and `obj2`. The intersection region of those two objects is defined as the set of all points `p` that are part of both `obj1` and `obj2`. Note that for objects like triangles and polygons that enclose a bounded region, this region is part of the object.

The types `Type1` and `Type2` can be any of the following:

- `Point_2<Kernel>`
- `Line_2<Kernel>`
- `Ray_2<Kernel>`
- `Segment_2<Kernel>`
- `Triangle_2<Kernel>`
- `Iso_rectangle_2<Kernel>`

Also, `Type1` and `Type2` can be both of type

- `Line_2<Kernel>`
- `Circle_2<Kernel>`

In three-dimensional space, the types `Type1` and `Type2` can be any of the following:

- `Bbox_3`.
- `Point_3<Kernel>`
- `Plane_3<Kernel>`
- `Line_3<Kernel>`
- `Ray_3<Kernel>`
- `Segment_3<Kernel>`
- `Sphere_3<Kernel>`
- `Triangle_3<Kernel>`.
- `Tetrahedron_3<Kernel>`.