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These changes were all made by @dev-dwarf. Many thanks for his work on this! * Renaming * First Pass on 2.0UpdateTool * Another pass on UpdateTool, changed name * Another pass on UpdateTool, changed name * Do Renaming * Working on Angles Consistency * Passing Coverage * Remove unused arc-tangent functions * Change macro defaults By default if user is overriding trig functions assume their input and internal units are the same. * wrap in AngleDeg instead of AngleRad * Remove HMM_PREFIX configuration * Fix for Slerp https://discord.com/channels/239737791225790464/489148972305350656/1055167647274246265 Justified by most implementations of Slerp. EX: http://number-none.com/product/Understanding%20Slerp,%20Then%20Not%20Using%20It/ * Handedness Changes * More renaming. C11 _Generics Generics enable by default when available (see lines 97-104). User can also force them by defining HANDMADE_MATH_C11_GENERICS Also fixed some missed things w.r.t renaming. My old tool didn't catch cases like HMM_MultiplyVec3f needing to be HMM_MulV3F instead of HMM_MulV3f. * Reuse more SSE codepaths for Quaternions Also improved quaternion tests. More work could be done here, see discussion here about optimizing slerp: https://discord.com/channels/239737791225790464/489148972305350656/1055167647274246265 * Just saving these alternate versions of SLerp * Reduce V4/M4 Linear Comb. codepaths * Simple implementation of 2x2 and 3x3 basic matrix operations. Also renamed Transpose to TransposeM4, so that we can have TransposeM2,M3 * Norm is dead! Long live Norm! As can be seen from the tests, precision has declined quite a bit from using the FastNorm implementations for various things. We can only guarantee about 0.001f precision for anything where a norm happens now. If this is undesired we can change back easily. * Started work on Matrix Inverses TODO: Tests for simple 4x4 Inverses * Matrix Inverses + Tests * Generics for Matrices and Rename MXd/f functions * Fixes + Better Output for UpdateTool * I think I count as a contributor : ) * Ported UpdateTool, Inlined my library code. * Moved tool to different repo https://github.com/dev-dwarf/HMM2.0UpdateTool * Remove small test change * Found some more references to atan functions * Standardize angle function names, use short names * Remove other slerp comments * woops that wasnt meant to be commited. * Finish changing ToRadians to ToRad * Fix [] overloads per https://discord.com/channels/239737791225790464/600063880533770251/1051600188302692402 * Tests for 2x2, 3x3 Matrices and Other Matrix Ops * Add an option to use Z: [0, 1] range for projection matrices. This will make HMM more convenient to use with other graphics APIs such as Direct3d and Metal. * Update test imports * #if should've been #ifdef! * Implement requested changes
Handmade Math
A single-file, cross-platform, public domain game math library for C/C++.
To get started, go download the latest release.
| Version | Changes |
|---|---|
| 1.13.0 | Fully inlined HandmadeMath.h. No need for HANDMADE_MATH_IMPLEMENTATION anymore |
| 1.12.1 | Added extra parentheses around some macros |
| 1.12.0 | Added Unary Minus operator for HMM_Vec2, HMM_Vec3, and HMM_Vec4. |
| 1.11.1 | Added HMM_PREFIX macro to a few functions that were missing it. |
| 1.11.0 | Added ability to customize or remove the default HMM_ prefix on function names by defining a macro called HMM_PREFIX(name). |
| 1.10.1 | Removed stdint.h, this doesn't exist on some really old compilers and we didn't really use it anyways. |
| 1.10.0 | Made HMM_Perspective use vertical FOV instead of horizontal FOV for consistency with other graphics APIs. |
| 1.9.0 | Added SSE versions of quaternion operations. |
| 1.8.0 | Added fast vector normalization routines that use fast inverse square roots. |
| 1.7.1 | Changed operator[] to take a const ref int instead of an int. |
| 1.7.0 | Renamed the 'Rows' member of hmm_mat4 to 'Columns'. Since our matrices are column-major, this should have been named 'Columns' from the start. 'Rows' is still present, but has been deprecated. |
| 1.6.0 | Added array subscript operators for vector and matrix types in C++. This is provided as a convenience, but be aware that it may incur an extra function call in unoptimized builds. |
| 1.5.1 | Fixed a bug with uninitialized elements in HMM_LookAt. |
| 1.5.0 | Changed internal structure for better performance and inlining. As a result, HANDMADE_MATH_NO_INLINE has been removed and no longer has any effect. |
| 1.4.0 | Fixed bug when using C mode. SSE'd all vec4 operations. Removed zeroing for better performance. |
| 1.3.0 | Removed need to #define HANDMADE_MATH_CPP_MODE. C++ definitions are now included automatically in C++ environments. |
| 1.2.0 | Added equality functions for HMM_Vec2, HMM_Vec3, and HMM_Vec4, and SSE'd HMM_MultiplyMat4 and HMM_Transpose. |
| 1.1.5 | Added Width and Height to HMM_Vec2, and made it so you can supply your own SqrtF. |
| 1.1.4 | Fixed SSE being included on platforms that don't support it, and fixed divide-by-zero errors when normalizing zero vectors. |
| 1.1.3 | Fixed compile error in C mode |
| 1.1.2 | Fixed invalid HMMDEF's in the function definitions |
| 1.1.1 | Resolved compiler warnings on gcc and g++ |
| 1.1 | Quaternions! |
| 1.0 | Lots of testing |
| 0.7 | Added HMM_Vec2, and HMM_Vec4 versions of HMM_LengthSquared, HMM_Length, and HMM_Normalize. |
| 0.6 | Made HMM_Power faster, Fixed possible efficiency problem with HMM_Normalize, RENAMED HMM_LengthSquareRoot to HMM_LengthSquared, RENAMED HMM_RSqrtF to HMM_RSquareRootF, RENAMED HMM_SqrtF to HMM_SquareRootF, REMOVED Inner function (user should use Dot now), REMOVED HMM_FastInverseSquareRoot function declaration |
| 0.5.2 | Fixed SSE code in HMM_SqrtF and HMM_RSqrtF |
| 0.5.1 | Fixed HMM_Translate producing row-major matrices, ensured column-major order for matrices throughout |
| 0.5 | Added scalar operations on vectors and matrices, added += and -= for hmm_mat4, reconciled headers and implementations, tidied up in general |
| 0.4 | Added SSE Optimized HMM_SqrtF, HMM_RSqrtF, Removed use of C Runtime |
| 0.3 | Added +=,-=, *=, /= for hmm_vec2, hmm_vec3, hmm_vec4 |
| 0.2b | Disabled warning C4201 on MSVC, Added 64bit precision on HMM_PI |
| 0.2a | Prefixed Macros |
| 0.2 | Updated Documentation, Fixed C Compliance, Prefixed all functions, and added better operator overloading |
| 0.1 | Initial Version |
FAQ
What's the license?
This library is in the public domain. You can do whatever you want with it.
Where can I contact you to ask questions?
Feel free to make Github issues for any questions, concerns, or problems you encounter.