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Add fast vector normalization (#94)

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* Add fast normalization routines

* Update readme and remove version history from main file

* Update version at top of file
This commit is contained in:
Ben Visness
2018-11-30 00:02:41 -06:00
committed by Zak Strange
parent 5ca1d58b36
commit f7c8e1f7d1
3 changed files with 138 additions and 114 deletions
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100
test/categories/VectorOps.h
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@@ -134,6 +134,106 @@ TEST(VectorOps, NormalizeZero)
#endif
}
TEST(VectorOps, FastNormalize)
{
hmm_vec2 v2 = HMM_Vec2(1.0f, -2.0f);
hmm_vec3 v3 = HMM_Vec3(1.0f, -2.0f, 3.0f);
hmm_vec4 v4 = HMM_Vec4(1.0f, -2.0f, 3.0f, -1.0f);
{
hmm_vec2 result = HMM_FastNormalizeVec2(v2);
EXPECT_NEAR(HMM_LengthVec2(result), 1.0f, 0.001f);
EXPECT_GT(result.X, 0.0f);
EXPECT_LT(result.Y, 0.0f);
}
{
hmm_vec3 result = HMM_FastNormalizeVec3(v3);
EXPECT_NEAR(HMM_LengthVec3(result), 1.0f, 0.001f);
EXPECT_GT(result.X, 0.0f);
EXPECT_LT(result.Y, 0.0f);
EXPECT_GT(result.Z, 0.0f);
}
{
hmm_vec4 result = HMM_FastNormalizeVec4(v4);
EXPECT_NEAR(HMM_LengthVec4(result), 1.0f, 0.001f);
EXPECT_GT(result.X, 0.0f);
EXPECT_LT(result.Y, 0.0f);
EXPECT_GT(result.Z, 0.0f);
EXPECT_LT(result.W, 0.0f);
}
#ifdef __cplusplus
{
hmm_vec2 result = HMM_FastNormalize(v2);
EXPECT_NEAR(HMM_LengthVec2(result), 1.0f, 0.001f);
EXPECT_GT(result.X, 0.0f);
EXPECT_LT(result.Y, 0.0f);
}
{
hmm_vec3 result = HMM_FastNormalize(v3);
EXPECT_NEAR(HMM_LengthVec3(result), 1.0f, 0.001f);
EXPECT_GT(result.X, 0.0f);
EXPECT_LT(result.Y, 0.0f);
EXPECT_GT(result.Z, 0.0f);
}
{
hmm_vec4 result = HMM_FastNormalize(v4);
EXPECT_NEAR(HMM_LengthVec4(result), 1.0f, 0.001f);
EXPECT_GT(result.X, 0.0f);
EXPECT_LT(result.Y, 0.0f);
EXPECT_GT(result.Z, 0.0f);
EXPECT_LT(result.W, 0.0f);
}
#endif
}
TEST(VectorOps, FastNormalizeZero)
{
hmm_vec2 v2 = HMM_Vec2(0.0f, 0.0f);
hmm_vec3 v3 = HMM_Vec3(0.0f, 0.0f, 0.0f);
hmm_vec4 v4 = HMM_Vec4(0.0f, 0.0f, 0.0f, 0.0f);
{
hmm_vec2 result = HMM_FastNormalizeVec2(v2);
EXPECT_FLOAT_EQ(result.X, 0.0f);
EXPECT_FLOAT_EQ(result.Y, 0.0f);
}
{
hmm_vec3 result = HMM_FastNormalizeVec3(v3);
EXPECT_FLOAT_EQ(result.X, 0.0f);
EXPECT_FLOAT_EQ(result.Y, 0.0f);
EXPECT_FLOAT_EQ(result.Z, 0.0f);
}
{
hmm_vec4 result = HMM_FastNormalizeVec4(v4);
EXPECT_FLOAT_EQ(result.X, 0.0f);
EXPECT_FLOAT_EQ(result.Y, 0.0f);
EXPECT_FLOAT_EQ(result.Z, 0.0f);
EXPECT_FLOAT_EQ(result.W, 0.0f);
}
#ifdef __cplusplus
{
hmm_vec2 result = HMM_FastNormalize(v2);
EXPECT_FLOAT_EQ(result.X, 0.0f);
EXPECT_FLOAT_EQ(result.Y, 0.0f);
}
{
hmm_vec3 result = HMM_FastNormalize(v3);
EXPECT_FLOAT_EQ(result.X, 0.0f);
EXPECT_FLOAT_EQ(result.Y, 0.0f);
EXPECT_FLOAT_EQ(result.Z, 0.0f);
}
{
hmm_vec4 result = HMM_FastNormalize(v4);
EXPECT_FLOAT_EQ(result.X, 0.0f);
EXPECT_FLOAT_EQ(result.Y, 0.0f);
EXPECT_FLOAT_EQ(result.Z, 0.0f);
EXPECT_FLOAT_EQ(result.W, 0.0f);
}
#endif
}
TEST(VectorOps, Cross)
{
hmm_vec3 v1 = HMM_Vec3(1.0f, 2.0f, 3.0f);