diff options
Diffstat (limited to 'src/math/func.h')
| -rw-r--r-- | src/math/func.h | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/src/math/func.h b/src/math/func.h index 2127d1a..541b084 100644 --- a/src/math/func.h +++ b/src/math/func.h @@ -15,8 +15,9 @@ // * You should have received a copy of the GNU General Public License // * along with this program. If not, see http://www.gnu.org/licenses/. -/** @defgroup MathFuncModule math/func.h - Contains common math functions. +/** + * \file math/func.h + * \brief Common math functions */ #pragma once @@ -31,8 +32,6 @@ namespace Math { -/* @{ */ // start of group - //! Compares \a a and \a b within \a tolerance inline bool IsEqual(float a, float b, float tolerance = Math::TOLERANCE) { @@ -127,6 +126,14 @@ inline float Rand() return static_cast<float>(rand()) / static_cast<float>(RAND_MAX); } +//! Returns the next nearest power of two to \a x +inline int NextPowerOfTwo(int x) +{ + double logbase2 = log(static_cast<float>(x)) / Math::LOG_2; + return static_cast<int>(pow(2, ceil(logbase2)) + 0.5); +} + + //! Returns a normalized angle, that is in other words between 0 and 2 * PI inline float NormAngle(float angle) { @@ -180,11 +187,13 @@ inline float Direction(float a, float g) //! Managing the dead zone of a joystick. /** -\verbatimin: -1 0 1 +\verbatim +in: -1 0 1 --|-------|----o----|-------|--> <----> dead -out: -1 0 0 1\endverbatim */ +out: -1 0 0 1 +\endverbatim */ inline float Neutral(float value, float dead) { if ( fabs(value) <= dead ) @@ -218,7 +227,8 @@ inline float Smooth(float actual, float hope, float time) //! Bounces any movement /** -\verbatimout +\verbatim +out | 1+------o-------o--- | o | o o | | bounce @@ -227,7 +237,8 @@ inline float Smooth(float actual, float hope, float time) | o | | -o------|-------+----> progress 0| | 1 - |<---->|middle\endverbatim */ + |<---->|middle +\endverbatim */ inline float Bounce(float progress, float middle = 0.3f, float bounce = 0.4f) { if ( progress < middle ) @@ -242,6 +253,4 @@ inline float Bounce(float progress, float middle = 0.3f, float bounce = 0.4f) } } -/* @} */ // end of group - }; // namespace Math |