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WIP: Properly initialize all elements of LookAt matrix (#84)

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* Properly initialize all elements of LookAt matrix

* Update version and readme

* Add a test for LookAt

good enough
This commit is contained in:
Ben Visness
2018-06-03 18:42:09 -05:00
committed by Ben Visness
parent 88d583e6ac
commit b13e3a317c
3 changed files with 31 additions and 1 deletions
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7
HandmadeMath.h
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@@ -1,5 +1,5 @@
/*
HandmadeMath.h v1.5.0
HandmadeMath.h v1.5.1
This is a single header file with a bunch of useful functions for game and
graphics math operations.
@@ -166,6 +166,8 @@
(*) Changed internal structure for better performance and inlining.
(*) As a result, HANDMADE_MATH_NO_INLINE has been removed and no
longer has any effect.
1.5.1
(*) Fixed a bug with uninitialized elements in HMM_LookAt.
LICENSE
@@ -2339,14 +2341,17 @@ hmm_mat4 HMM_LookAt(hmm_vec3 Eye, hmm_vec3 Center, hmm_vec3 Up)
Result.Elements[0][0] = S.X;
Result.Elements[0][1] = U.X;
Result.Elements[0][2] = -F.X;
Result.Elements[0][3] = 0.0f;
Result.Elements[1][0] = S.Y;
Result.Elements[1][1] = U.Y;
Result.Elements[1][2] = -F.Y;
Result.Elements[1][3] = 0.0f;
Result.Elements[2][0] = S.Z;
Result.Elements[2][1] = U.Z;
Result.Elements[2][2] = -F.Z;
Result.Elements[2][3] = 0.0f;
Result.Elements[3][0] = -HMM_DotVec3(S, Eye);
Result.Elements[3][1] = -HMM_DotVec3(U, Eye);