KDE 4.4 API Reference step/stepcore
StepCore::GravitationForce Class Reference
[Physical forces]
Newton gravitational force. More...
#include <gravitation.h>
Public Member Functions | |
| GravitationForce (double gravitationConst=Constants::Gravitational) | |
| void | calcForce (bool calcVariances) |
| double | gravitationConst () const |
| GravitationForceErrors * | gravitationForceErrors () |
| void | setGravitationConst (double gravitationConst) |
Protected Member Functions | |
| ObjectErrors * | createObjectErrors () |
Protected Attributes | |
| double | _gravitationConst |
Detailed Description
Newton gravitational force.
The force acts between pairs of massive bodies (currently only Particle) and equals:
![\[ \overrightarrow{f} = G \frac{m_1 m_2 \overrightarrow{r}} {|\overrightarrow{r}|^3} \]](form_9.png)
where:
is GravitationForce::gravitationConst
and 
is Particle::mass of first and second body
is difference of Particle::position of the first and second body
- Todo:
- Add interface for massive bodies, support bodies with distributed mass
Definition at line 80 of file gravitation.h.
Constructor & Destructor Documentation
| StepCore::GravitationForce::GravitationForce | ( | double | gravitationConst = Constants::Gravitational |
) |
Constructs GravitationForce.
Definition at line 58 of file gravitation.cc.
Member Function Documentation
| void StepCore::GravitationForce::calcForce | ( | bool | calcVariances | ) | [virtual] |
Calculate force.
Bodies can be accessed through this->world()->bodies()
Implements StepCore::Force.
Definition at line 65 of file gravitation.cc.
| ObjectErrors* StepCore::GravitationForce::createObjectErrors | ( | ) | [inline, protected, virtual] |
For internal use only.
Creates specific ObjectErrors-derived class (to be reimplemented in derived classes)
Reimplemented from StepCore::Item.
Definition at line 100 of file gravitation.h.
| double StepCore::GravitationForce::gravitationConst | ( | ) | const [inline] |
Get gravitational constant.
Definition at line 91 of file gravitation.h.
| GravitationForceErrors* StepCore::GravitationForce::gravitationForceErrors | ( | ) | [inline] |
Get (and possibly create) GravitationForceErrors object.
Definition at line 96 of file gravitation.h.
| void StepCore::GravitationForce::setGravitationConst | ( | double | gravitationConst | ) | [inline] |
Set gravitational constant.
Definition at line 93 of file gravitation.h.
Member Data Documentation
double StepCore::GravitationForce::_gravitationConst [protected] |
Definition at line 102 of file gravitation.h.
The documentation for this class was generated from the following files:
