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Added HMM_DotVec2, HMM_DotVec3, and HMM_DotVec4

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Zak Strange
2016-08-30 12:05:33 -07:00
parent 712e5aa6db
commit b087efc561
1 changed files with 30 additions and 6 deletions
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36
HandmadeMath.h
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@@ -350,7 +350,10 @@ HMMDEF float HMM_Clamp(float Min, float Value, float Max);
HMMDEF hmm_vec3 HMM_Normalize(hmm_vec3 A);
HMMDEF hmm_vec3 HMM_Cross(hmm_vec3 VecOne, hmm_vec3 VecTwo);
HMMDEF float HMM_Dot(hmm_vec3 VecOne, hmm_vec3 VecTwo);
HMMDEF float HMM_DotVec2(hmm_vec3 VecOne, hmm_vec3 VecTwo);
HMMDEF float HMM_DotVec3(hmm_vec3 VecOne, hmm_vec3 VecTwo);
HMMDEF float HMM_DotVec4(hmm_vec3 VecOne, hmm_vec3 VecTwo);
HMMDEF hmm_vec2 HMM_Vec2i(int X, int Y);
HMMDEF hmm_vec2 HMM_Vec2(float X, float Y);
@@ -571,8 +574,18 @@ HMM_ToRadians(float Degrees)
return (Result);
}
HINLINE float
HMM_Dot(hmm_vec3 VecOne, hmm_vec3 VecTwo)
HMM_DotVec2(hmm_vec2 VecOne, hmm_vec2 VecTwo)
{
float Result = 0;
Result = (VecOne.X * VecTwo.X) + (VecOne.Y * VecTwo.Y);
return (Result);
}
HINLINE float
HMM_DotVec3(hmm_vec3 VecOne, hmm_vec3 VecTwo)
{
float Result = 0;
@@ -580,12 +593,23 @@ HMM_Dot(hmm_vec3 VecOne, hmm_vec3 VecTwo)
return (Result);
}
HINLINE float
HMM_DotVec4(hmm_vec4 VecOne, hmm_vec4 VecTwo)
{
float Result = 0;
Result = (VecOne.X * VecTwo.X) + (VecOne.Y * VecTwo.Y) + (VecOne.Z * VecTwo.Z);
return (Result);
}
HINLINE float
HMM_LengthSquared(hmm_vec3 A)
{
float Result = 0;
Result = HMM_Dot(A, A);
Result = HMM_DotVec3(A, A);
return (Result);
}
@@ -1199,9 +1223,9 @@ HMM_LookAt(hmm_vec3 Eye, hmm_vec3 Center, hmm_vec3 Up)
Result.Elements[2][1] = U.Z;
Result.Elements[2][2] = -F.Z;
Result.Elements[3][0] = -HMM_Dot(S, Eye);
Result.Elements[3][1] = -HMM_Dot(U, Eye);
Result.Elements[3][2] = HMM_Dot(F, Eye);
Result.Elements[3][0] = -HMM_DotVec3(S, Eye);
Result.Elements[3][1] = -HMM_DotVec3(U, Eye);
Result.Elements[3][2] = HMM_DotVec3(F, Eye);
Result.Elements[3][3] = 1.0f;
return (Result);