Shuto Naruse
commit!
geometryfuncs/geometryfuncs.h@0:42026f893a2d, 2012-06-15 (annotated)
- Committer:
- narshu
- Date:
- Fri Jun 15 20:40:17 2012 +0000
- Revision:
- 0:42026f893a2d
Who changed what in which revision?
| User | Revision | Line number | New contents of line |
|---|---|---|---|
| narshu | 0:42026f893a2d | 1 | #ifndef GEOMETRYFUNCS_H |
| narshu | 0:42026f893a2d | 2 | #define GEOMETRYFUNCS_H |
| narshu | 0:42026f893a2d | 3 | |
| narshu | 0:42026f893a2d | 4 | #include <tvmet/Matrix.h> |
| narshu | 0:42026f893a2d | 5 | |
| narshu | 0:42026f893a2d | 6 | template <typename T> |
| narshu | 0:42026f893a2d | 7 | Matrix <T, 2, 2> Rotmatrix(T theta) { |
| narshu | 0:42026f893a2d | 8 | Matrix <T, 2, 2> outmatrix; |
| narshu | 0:42026f893a2d | 9 | outmatrix = cos(theta), -sin(theta), |
| narshu | 0:42026f893a2d | 10 | sin(theta), cos(theta); |
| narshu | 0:42026f893a2d | 11 | return outmatrix; |
| narshu | 0:42026f893a2d | 12 | } |
| narshu | 0:42026f893a2d | 13 | |
| narshu | 0:42026f893a2d | 14 | // rectifies angle to range -PI to PI |
| narshu | 0:42026f893a2d | 15 | template <typename T> |
| narshu | 0:42026f893a2d | 16 | T rectifyAng (T ang_in) { |
| narshu | 0:42026f893a2d | 17 | ang_in -= (floor(ang_in/(2*PI)))*2*PI; |
| narshu | 0:42026f893a2d | 18 | if (ang_in < -PI) { |
| narshu | 0:42026f893a2d | 19 | ang_in += 2*PI; |
| narshu | 0:42026f893a2d | 20 | } |
| narshu | 0:42026f893a2d | 21 | if (ang_in > PI) { |
| narshu | 0:42026f893a2d | 22 | ang_in -= 2*PI; |
| narshu | 0:42026f893a2d | 23 | } |
| narshu | 0:42026f893a2d | 24 | |
| narshu | 0:42026f893a2d | 25 | return ang_in; |
| narshu | 0:42026f893a2d | 26 | } |
| narshu | 0:42026f893a2d | 27 | |
| narshu | 0:42026f893a2d | 28 | #endif //GEOMETRYFUNCS_H |