Math Namespace Reference
Detailed Description
Nebula3's Math subsystem offers a standalone library of C++ math classes. Nothing unusual about them ;)FIXME: make math code less object oriented and more like HLSL for better performance and portability to Xbox360.
Data Structures | |
| class | bbox |
| class | ClipStatus |
| class | Extrapolator |
| class | float2 |
| class | frustum |
| class | line |
| class | noise |
| class | polar |
| class | rectangle |
| class | sphere |
| class | transform44 |
| class | float4 |
| class | matrix44 |
| class | plane |
| class | point |
| class | quaternion |
| class | vector |
Functions | |
| __forceinline bool | n_fequal (scalar f0, scalar f1, scalar tol) |
| __forceinline int | n_iclamp (int val, int minVal, int maxVal) |
| __forceinline bool | n_fless (scalar f0, scalar f1, scalar tol) |
| __forceinline bool | n_fgreater (scalar f0, scalar f1, scalar tol) |
| __forceinline scalar | n_clamp (scalar val, scalar lower, scalar upper) |
| __forceinline scalar | n_saturate (scalar val) |
| __forceinline double | n_saturate (double val) |
| __forceinline scalar | n_lerp (scalar x, scalar y, scalar l) |
| __forceinline double | n_lerp (double x, double y, double l) |
| __forceinline scalar | n_angulardistance (scalar from, scalar to) |
| __forceinline bool | n_isdenormal (scalar s) |
| __forceinline float | n_undenormalize (scalar s) |
| __forceinline bool | n_nearequal (scalar a, scalar b, scalar epsilon) |
| __forceinline scalar | n_rand () |
| __forceinline scalar | n_rand (scalar min, scalar max) |
| __forceinline int | n_fchop (scalar f) |
| __forceinline scalar | n_modangle (scalar a) |
| __forceinline scalar | n_log2 (scalar f) |
| __forceinline int | n_frnd (scalar f) |
| __forceinline scalar | n_log (scalar x) |
Function Documentation
| __forceinline bool Math::n_fequal | ( | scalar | f0, | |
| scalar | f1, | |||
| scalar | tol | |||
| ) |
A fuzzy floating point equality check
| __forceinline int Math::n_iclamp | ( | int | val, | |
| int | minVal, | |||
| int | maxVal | |||
| ) |
Integer clamping.
| __forceinline bool Math::n_fless | ( | scalar | f0, | |
| scalar | f1, | |||
| scalar | tol | |||
| ) |
A fuzzy floating point less-then check.
| __forceinline bool Math::n_fgreater | ( | scalar | f0, | |
| scalar | f1, | |||
| scalar | tol | |||
| ) |
A fuzzy floating point greater-then check.
| __forceinline scalar Math::n_clamp | ( | scalar | val, | |
| scalar | lower, | |||
| scalar | upper | |||
| ) |
Clamp a value against lower und upper boundary.
| __forceinline scalar Math::n_saturate | ( | scalar | val | ) |
Saturate a value (clamps between 0.0f and 1.0f)
| __forceinline double Math::n_saturate | ( | double | val | ) |
Saturate a value (clamps between 0.0f and 1.0f)
| __forceinline scalar Math::n_lerp | ( | scalar | x, | |
| scalar | y, | |||
| scalar | l | |||
| ) |
Linearly interpolate between 2 values: ret = x + l * (y - x)
| __forceinline double Math::n_lerp | ( | double | x, | |
| double | y, | |||
| double | l | |||
| ) |
Linearly interpolate between 2 values: ret = x + l * (y - x)
| __forceinline scalar Math::n_angulardistance | ( | scalar | from, | |
| scalar | to | |||
| ) |
Get angular distance.
| __forceinline bool Math::n_isdenormal | ( | scalar | s | ) |
Returns true if the input scalar is denormalized (DEN)
| __forceinline float Math::n_undenormalize | ( | scalar | s | ) |
Returns 0 if scalar is denormal.
| __forceinline bool Math::n_nearequal | ( | scalar | a, | |
| scalar | b, | |||
| scalar | epsilon | |||
| ) |
test of nearly equal given a tolerance (epsilon)
| __forceinline scalar Math::n_rand | ( | ) |
Return a pseudo random number between 0 and 1.
| __forceinline scalar Math::n_rand | ( | scalar | min, | |
| scalar | max | |||
| ) |
Return a pseudo random number between min and max.
| __forceinline int Math::n_fchop | ( | scalar | f | ) |
Chop float to int.
| __forceinline scalar Math::n_modangle | ( | scalar | a | ) |
Normalize an angular value into the range rad(0) to rad(360).
| __forceinline scalar Math::n_log2 | ( | scalar | f | ) |
log2() function.
| __forceinline int Math::n_frnd | ( | scalar | f | ) |
Round float to integer.
| __forceinline scalar Math::n_log | ( | scalar | x | ) |
get logarithm of x