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HandmadeMath/test/categories/Division.h
Logan Forman c24e4ff873 HMM2.0 (#149) 
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
2023-01-22 17:34:50 -06:00

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#include "../HandmadeTest.h"
TEST(Division, Vec2Vec2)
{
HMM_Vec2 v2_1 = HMM_V2(1.0f, 3.0f);
HMM_Vec2 v2_2 = HMM_V2(2.0f, 4.0f);
{
HMM_Vec2 result = HMM_DivV2(v2_1, v2_2);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 0.75f);
}
#ifdef __cplusplus
{
HMM_Vec2 result = HMM_Div(v2_1, v2_2);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 0.75f);
}
{
HMM_Vec2 result = v2_1 / v2_2;
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 0.75f);
}
v2_1 /= v2_2;
EXPECT_FLOAT_EQ(v2_1.X, 0.5f);
EXPECT_FLOAT_EQ(v2_1.Y, 0.75f);
#endif
}
TEST(Division, Vec2Scalar)
{
HMM_Vec2 v2 = HMM_V2(1.0f, 2.0f);
float s = 2;
{
HMM_Vec2 result = HMM_DivV2F(v2, s);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
}
#ifdef __cplusplus
{
HMM_Vec2 result = HMM_Div(v2, s);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
}
{
HMM_Vec2 result = v2 / s;
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
}
v2 /= s;
EXPECT_FLOAT_EQ(v2.X, 0.5f);
EXPECT_FLOAT_EQ(v2.Y, 1.0f);
#endif
}
TEST(Division, Vec3Vec3)
{
HMM_Vec3 v3_1 = HMM_V3(1.0f, 3.0f, 5.0f);
HMM_Vec3 v3_2 = HMM_V3(2.0f, 4.0f, 0.5f);
{
HMM_Vec3 result = HMM_DivV3(v3_1, v3_2);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 0.75f);
EXPECT_FLOAT_EQ(result.Z, 10.0f);
}
#ifdef __cplusplus
{
HMM_Vec3 result = HMM_Div(v3_1, v3_2);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 0.75f);
EXPECT_FLOAT_EQ(result.Z, 10.0f);
}
{
HMM_Vec3 result = v3_1 / v3_2;
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 0.75f);
EXPECT_FLOAT_EQ(result.Z, 10.0f);
}
v3_1 /= v3_2;
EXPECT_FLOAT_EQ(v3_1.X, 0.5f);
EXPECT_FLOAT_EQ(v3_1.Y, 0.75f);
EXPECT_FLOAT_EQ(v3_1.Z, 10.0f);
#endif
}
TEST(Division, Vec3Scalar)
{
HMM_Vec3 v3 = HMM_V3(1.0f, 2.0f, 3.0f);
float s = 2;
{
HMM_Vec3 result = HMM_DivV3F(v3, s);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
EXPECT_FLOAT_EQ(result.Z, 1.5f);
}
#ifdef __cplusplus
{
HMM_Vec3 result = HMM_Div(v3, s);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
EXPECT_FLOAT_EQ(result.Z, 1.5f);
}
{
HMM_Vec3 result = v3 / s;
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
EXPECT_FLOAT_EQ(result.Z, 1.5f);
}
v3 /= s;
EXPECT_FLOAT_EQ(v3.X, 0.5f);
EXPECT_FLOAT_EQ(v3.Y, 1.0f);
EXPECT_FLOAT_EQ(v3.Z, 1.5f);
#endif
}
TEST(Division, Vec4Vec4)
{
HMM_Vec4 v4_1 = HMM_V4(1.0f, 3.0f, 5.0f, 1.0f);
HMM_Vec4 v4_2 = HMM_V4(2.0f, 4.0f, 0.5f, 4.0f);
{
HMM_Vec4 result = HMM_DivV4(v4_1, v4_2);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 0.75f);
EXPECT_FLOAT_EQ(result.Z, 10.0f);
EXPECT_FLOAT_EQ(result.W, 0.25f);
}
#ifdef __cplusplus
{
HMM_Vec4 result = HMM_Div(v4_1, v4_2);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 0.75f);
EXPECT_FLOAT_EQ(result.Z, 10.0f);
EXPECT_FLOAT_EQ(result.W, 0.25f);
}
{
HMM_Vec4 result = v4_1 / v4_2;
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 0.75f);
EXPECT_FLOAT_EQ(result.Z, 10.0f);
EXPECT_FLOAT_EQ(result.W, 0.25f);
}
v4_1 /= v4_2;
EXPECT_FLOAT_EQ(v4_1.X, 0.5f);
EXPECT_FLOAT_EQ(v4_1.Y, 0.75f);
EXPECT_FLOAT_EQ(v4_1.Z, 10.0f);
EXPECT_FLOAT_EQ(v4_1.W, 0.25f);
#endif
}
TEST(Division, Vec4Scalar)
{
HMM_Vec4 v4 = HMM_V4(1.0f, 2.0f, 3.0f, 4.0f);
float s = 2;
{
HMM_Vec4 result = HMM_DivV4F(v4, s);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
EXPECT_FLOAT_EQ(result.Z, 1.5f);
EXPECT_FLOAT_EQ(result.W, 2.0f);
}
#ifdef __cplusplus
{
HMM_Vec4 result = HMM_Div(v4, s);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
EXPECT_FLOAT_EQ(result.Z, 1.5f);
EXPECT_FLOAT_EQ(result.W, 2.0f);
}
{
HMM_Vec4 result = v4 / s;
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
EXPECT_FLOAT_EQ(result.Z, 1.5f);
EXPECT_FLOAT_EQ(result.W, 2.0f);
}
v4 /= s;
EXPECT_FLOAT_EQ(v4.X, 0.5f);
EXPECT_FLOAT_EQ(v4.Y, 1.0f);
EXPECT_FLOAT_EQ(v4.Z, 1.5f);
EXPECT_FLOAT_EQ(v4.W, 2.0f);
#endif
}
TEST(Division, Mat2Scalar)
{
HMM_Mat2 m = HMM_M2();
float s = 0.5f;
int Counter = 1;
for (int Column = 0; Column < 2; ++Column) {
for (int Row = 0; Row < 2; ++Row) {
m.Elements[Column][Row] = Counter++;
}
}
{
HMM_Mat2 result = HMM_DivM2F(m, s);
EXPECT_FLOAT_EQ(result.Elements[0][0], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 8.0f);
}
#ifdef __cplusplus
{
HMM_Mat2 result = HMM_Div(m, s);
EXPECT_FLOAT_EQ(result.Elements[0][0], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 8.0f);
}
{
HMM_Mat2 result = m / s;
EXPECT_FLOAT_EQ(result.Elements[0][0], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 8.0f);
}
#endif
}
TEST(Division, Mat3Scalar)
{
HMM_Mat3 m = HMM_M3();
float s = 0.5f;
int Counter = 1;
for (int Column = 0; Column < 3; ++Column) {
for (int Row = 0; Row < 3; ++Row) {
m.Elements[Column][Row] = Counter++;
}
}
{
HMM_Mat3 result = HMM_DivM3F(m, s);
EXPECT_FLOAT_EQ(result.Elements[0][0], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[0][2], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 8.0f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 10.0f);
EXPECT_FLOAT_EQ(result.Elements[1][2], 12.0f);
EXPECT_FLOAT_EQ(result.Elements[2][0], 14.0f);
EXPECT_FLOAT_EQ(result.Elements[2][1], 16.0f);
EXPECT_FLOAT_EQ(result.Elements[2][2], 18.0f);
}
#ifdef __cplusplus
{
HMM_Mat3 result = HMM_Div(m, s);
EXPECT_FLOAT_EQ(result.Elements[0][0], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[0][2], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 8.0f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 10.0f);
EXPECT_FLOAT_EQ(result.Elements[1][2], 12.0f);
EXPECT_FLOAT_EQ(result.Elements[2][0], 14.0f);
EXPECT_FLOAT_EQ(result.Elements[2][1], 16.0f);
EXPECT_FLOAT_EQ(result.Elements[2][2], 18.0f);
}
{
HMM_Mat3 result = m / s;
EXPECT_FLOAT_EQ(result.Elements[0][0], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[0][2], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 8.0f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 10.0f);
EXPECT_FLOAT_EQ(result.Elements[1][2], 12.0f);
EXPECT_FLOAT_EQ(result.Elements[2][0], 14.0f);
EXPECT_FLOAT_EQ(result.Elements[2][1], 16.0f);
EXPECT_FLOAT_EQ(result.Elements[2][2], 18.0f);
}
#endif
}
TEST(Division, Mat4Scalar)
{
HMM_Mat4 m4 = HMM_M4(); // will have 1 - 16
float s = 2;
// Fill the matrix
int Counter = 1;
for (int Column = 0; Column < 4; ++Column)
{
for (int Row = 0; Row < 4; ++Row)
{
m4.Elements[Column][Row] = Counter;
++Counter;
}
}
// Test the results
{
HMM_Mat4 result = HMM_DivM4F(m4, s);
EXPECT_FLOAT_EQ(result.Elements[0][0], 0.5f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 1.0f);
EXPECT_FLOAT_EQ(result.Elements[0][2], 1.5f);
EXPECT_FLOAT_EQ(result.Elements[0][3], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 2.5f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 3.0f);
EXPECT_FLOAT_EQ(result.Elements[1][2], 3.5f);
EXPECT_FLOAT_EQ(result.Elements[1][3], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[2][0], 4.5f);
EXPECT_FLOAT_EQ(result.Elements[2][1], 5.0f);
EXPECT_FLOAT_EQ(result.Elements[2][2], 5.5f);
EXPECT_FLOAT_EQ(result.Elements[2][3], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[3][0], 6.5f);
EXPECT_FLOAT_EQ(result.Elements[3][1], 7.0f);
EXPECT_FLOAT_EQ(result.Elements[3][2], 7.5f);
EXPECT_FLOAT_EQ(result.Elements[3][3], 8.0f);
}
#ifdef __cplusplus
{
HMM_Mat4 result = HMM_Div(m4, s);
EXPECT_FLOAT_EQ(result.Elements[0][0], 0.5f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 1.0f);
EXPECT_FLOAT_EQ(result.Elements[0][2], 1.5f);
EXPECT_FLOAT_EQ(result.Elements[0][3], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 2.5f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 3.0f);
EXPECT_FLOAT_EQ(result.Elements[1][2], 3.5f);
EXPECT_FLOAT_EQ(result.Elements[1][3], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[2][0], 4.5f);
EXPECT_FLOAT_EQ(result.Elements[2][1], 5.0f);
EXPECT_FLOAT_EQ(result.Elements[2][2], 5.5f);
EXPECT_FLOAT_EQ(result.Elements[2][3], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[3][0], 6.5f);
EXPECT_FLOAT_EQ(result.Elements[3][1], 7.0f);
EXPECT_FLOAT_EQ(result.Elements[3][2], 7.5f);
EXPECT_FLOAT_EQ(result.Elements[3][3], 8.0f);
}
{
HMM_Mat4 result = m4 / s;
EXPECT_FLOAT_EQ(result.Elements[0][0], 0.5f);
EXPECT_FLOAT_EQ(result.Elements[0][1], 1.0f);
EXPECT_FLOAT_EQ(result.Elements[0][2], 1.5f);
EXPECT_FLOAT_EQ(result.Elements[0][3], 2.0f);
EXPECT_FLOAT_EQ(result.Elements[1][0], 2.5f);
EXPECT_FLOAT_EQ(result.Elements[1][1], 3.0f);
EXPECT_FLOAT_EQ(result.Elements[1][2], 3.5f);
EXPECT_FLOAT_EQ(result.Elements[1][3], 4.0f);
EXPECT_FLOAT_EQ(result.Elements[2][0], 4.5f);
EXPECT_FLOAT_EQ(result.Elements[2][1], 5.0f);
EXPECT_FLOAT_EQ(result.Elements[2][2], 5.5f);
EXPECT_FLOAT_EQ(result.Elements[2][3], 6.0f);
EXPECT_FLOAT_EQ(result.Elements[3][0], 6.5f);
EXPECT_FLOAT_EQ(result.Elements[3][1], 7.0f);
EXPECT_FLOAT_EQ(result.Elements[3][2], 7.5f);
EXPECT_FLOAT_EQ(result.Elements[3][3], 8.0f);
}
m4 /= s;
EXPECT_FLOAT_EQ(m4.Elements[0][0], 0.5f);
EXPECT_FLOAT_EQ(m4.Elements[0][1], 1.0f);
EXPECT_FLOAT_EQ(m4.Elements[0][2], 1.5f);
EXPECT_FLOAT_EQ(m4.Elements[0][3], 2.0f);
EXPECT_FLOAT_EQ(m4.Elements[1][0], 2.5f);
EXPECT_FLOAT_EQ(m4.Elements[1][1], 3.0f);
EXPECT_FLOAT_EQ(m4.Elements[1][2], 3.5f);
EXPECT_FLOAT_EQ(m4.Elements[1][3], 4.0f);
EXPECT_FLOAT_EQ(m4.Elements[2][0], 4.5f);
EXPECT_FLOAT_EQ(m4.Elements[2][1], 5.0f);
EXPECT_FLOAT_EQ(m4.Elements[2][2], 5.5f);
EXPECT_FLOAT_EQ(m4.Elements[2][3], 6.0f);
EXPECT_FLOAT_EQ(m4.Elements[3][0], 6.5f);
EXPECT_FLOAT_EQ(m4.Elements[3][1], 7.0f);
EXPECT_FLOAT_EQ(m4.Elements[3][2], 7.5f);
EXPECT_FLOAT_EQ(m4.Elements[3][3], 8.0f);
#endif
}
TEST(Division, QuaternionScalar)
{
HMM_Quat q = HMM_Q(1.0f, 2.0f, 3.0f, 4.0f);
float f = 2.0f;
{
HMM_Quat result = HMM_DivQF(q, f);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
EXPECT_FLOAT_EQ(result.Z, 1.5f);
EXPECT_FLOAT_EQ(result.W, 2.0f);
}
#ifdef __cplusplus
{
HMM_Quat result = HMM_Div(q, f);
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
EXPECT_FLOAT_EQ(result.Z, 1.5f);
EXPECT_FLOAT_EQ(result.W, 2.0f);
}
{
HMM_Quat result = q / f;
EXPECT_FLOAT_EQ(result.X, 0.5f);
EXPECT_FLOAT_EQ(result.Y, 1.0f);
EXPECT_FLOAT_EQ(result.Z, 1.5f);
EXPECT_FLOAT_EQ(result.W, 2.0f);
}
q /= f;
EXPECT_FLOAT_EQ(q.X, 0.5f);
EXPECT_FLOAT_EQ(q.Y, 1.0f);
EXPECT_FLOAT_EQ(q.Z, 1.5f);
EXPECT_FLOAT_EQ(q.W, 2.0f);
#endif
}
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