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Add HMM_QFromNormPair() and HMM_QFromVecPair()

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BYP
2024-04-08 21:14:59 -04:00
parent 322826bcee
commit bdc04881de
2 changed files with 43 additions and 0 deletions
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21
HandmadeMath.h
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@@ -2600,6 +2600,27 @@ static inline HMM_Quat HMM_QFromAxisAngle_LH(HMM_Vec3 Axis, float Angle)
return HMM_QFromAxisAngle_RH(Axis, -Angle); return HMM_QFromAxisAngle_RH(Axis, -Angle);
} }
COVERAGE(HMM_QFromNormPair, 1)
static inline HMM_Quat HMM_QFromNormPair(HMM_Vec3 Left, HMM_Vec3 Right)
{
ASSERT_COVERED(HMM_QFromNormPair);
HMM_Quat Result;
Result.XYZ = HMM_Cross(Left, Right);
Result.W = 1.0f + HMM_DotV3(Left, Right);
return HMM_NormQ(Result);
}
COVERAGE(HMM_QFromVecPair, 1)
static inline HMM_Quat HMM_QFromVecPair(HMM_Vec3 Left, HMM_Vec3 Right)
{
ASSERT_COVERED(HMM_QFromVecPair);
return HMM_QFromNormPair(HMM_NormV3(Left), HMM_NormV3(Right));
}
COVERAGE(HMM_RotateV2, 1) COVERAGE(HMM_RotateV2, 1)
static inline HMM_Vec2 HMM_RotateV2(HMM_Vec2 V, float Angle) static inline HMM_Vec2 HMM_RotateV2(HMM_Vec2 V, float Angle)
{ {

22
test/categories/QuaternionOps.h
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@@ -273,3 +273,25 @@ TEST(QuaternionOps, RotateVectorAxisAngle)
EXPECT_NEAR(result.Z, 0.707170f, 0.001f); EXPECT_NEAR(result.Z, 0.707170f, 0.001f);
} }
} }
TEST(QuaternionOps, QuatFromPairs)
{
{
HMM_Vec3 n1 = HMM_V3(0.0f, 1.0f, 0.0f);
HMM_Vec3 n2 = HMM_V3(0.0f, 0.0f, 1.0f);
HMM_Quat q = HMM_QFromNormPair(n1, n2);
HMM_Vec3 result = HMM_RotateV3Q(n1, q);
EXPECT_NEAR(result.X, n2.X, 0.001f);
EXPECT_NEAR(result.Y, n2.Y, 0.001f);
EXPECT_NEAR(result.Z, n2.Z, 0.001f);
}
{
HMM_Vec3 v1 = HMM_V3(2.0f, 2.0f, 2.0f);
HMM_Vec3 v2 = HMM_V3(3.0f, 0.0f, 0.0f);
HMM_Quat q = HMM_QFromVecPair(v1, v2);
HMM_Vec3 result = HMM_RotateV3Q(HMM_V3(0.0f, 1.0f, 0.0f), q);
EXPECT_NEAR(result.X, 0.577350, 0.001f);
EXPECT_NEAR(result.Y, 0.788675, 0.001f);
EXPECT_NEAR(result.Z, -0.211325, 0.001f);
}
}