The concept Integrator_2 describes the set of requirements for the second template parameter of the class CGAL::Stream_lines_2<VectorField_2,Integrator_2>. This concept provides the operation that integrates a new point from a given point with a predefined step, and according to a specified vector.
- Has models
CGAL::Euler_integrator_2<VectorField_2>
CGAL::Runge_kutta_integrator_2<VectorField_2>
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| Integrator_2 () |
| | Default constructor.
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The following operations return the newly integrated point.
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| Point_2 | operator() (Point_2 p, Vector_field_2 vector_field_2) |
| | Returns the new position from the actual position defined by p, according to the vector given by vector_field_2 at p.
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| Point_2 | operator() (Point_2 p, Vector_field_2 vector_field_2, FT integration_step) |
| | As above. The integration step is defined by integration_step.
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| Point_2 | operator() (Point_2 p, Vector_field_2 vector_field_2, FT integration_step, bool direction) |
| | As above. In addition, this function integrates forward if direction is true, and backward if it is false.
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◆ operator()() [1/3]
Returns the new position from the actual position defined by p, according to the vector given by vector_field_2 at p.
- Precondition
vector_field_2.is_in_domain(p) must be true.
◆ operator()() [2/3]
As above. The integration step is defined by integration_step.
- Precondition
vector_field_2.is_in_domain(p) must be true.
◆ operator()() [3/3]
As above. In addition, this function integrates forward if direction is true, and backward if it is false.
- Precondition
vector_field_2.is_in_domain(p) must be true.