admin/omath
1
0
Fork 0
mirror of https://github.com/orange-cpp/omath.git synced 2026-04-18 19:03:28 +00:00
Code Issues Packages Projects Releases Wiki Activity

updated z range

Browse Source
This commit is contained in:
Orange
2026-03-23 23:36:19 +03:00
parent a9ff7868cf
commit 4b6db0c402
32 changed files with 592 additions and 79 deletions
Download Patch File Download Diff File Expand all files Collapse all files

122
tests/general/unit_test_mat.cpp
View File

@@ -240,4 +240,126 @@ TEST(UnitTestMatStandalone, MatPerspectiveLeftHanded)
projected /= projected.at(3, 0);
EXPECT_TRUE(projected.at(2, 0) > -1.0f && projected.at(2, 0) < 0.f);
}
TEST(UnitTestMatStandalone, MatPerspectiveLeftHandedZeroToOne)
{
const auto proj = mat_perspective_left_handed<float, MatStoreType::ROW_MAJOR, NDCDepthRange::ZERO_TO_ONE>(
90.f, 16.f / 9.f, 0.1f, 1000.f);
// Near plane point should map to z ~ 0
auto near_pt = proj * mat_column_from_vector<float>({0, 0, 0.1f});
near_pt /= near_pt.at(3, 0);
EXPECT_NEAR(near_pt.at(2, 0), 0.0f, 1e-4f);
// Far plane point should map to z ~ 1
auto far_pt = proj * mat_column_from_vector<float>({0, 0, 1000.f});
far_pt /= far_pt.at(3, 0);
EXPECT_NEAR(far_pt.at(2, 0), 1.0f, 1e-4f);
// Mid-range point should be in [0, 1]
auto mid_pt = proj * mat_column_from_vector<float>({0, 0, 500.f});
mid_pt /= mid_pt.at(3, 0);
EXPECT_GT(mid_pt.at(2, 0), 0.0f);
EXPECT_LT(mid_pt.at(2, 0), 1.0f);
}
TEST(UnitTestMatStandalone, MatPerspectiveRightHandedZeroToOne)
{
const auto proj = mat_perspective_right_handed<float, MatStoreType::ROW_MAJOR, NDCDepthRange::ZERO_TO_ONE>(
90.f, 16.f / 9.f, 0.1f, 1000.f);
// Near plane point (negative z for right-handed) should map to z ~ 0
auto near_pt = proj * mat_column_from_vector<float>({0, 0, -0.1f});
near_pt /= near_pt.at(3, 0);
EXPECT_NEAR(near_pt.at(2, 0), 0.0f, 1e-4f);
// Far plane point should map to z ~ 1
auto far_pt = proj * mat_column_from_vector<float>({0, 0, -1000.f});
far_pt /= far_pt.at(3, 0);
EXPECT_NEAR(far_pt.at(2, 0), 1.0f, 1e-4f);
// Mid-range point should be in [0, 1]
auto mid_pt = proj * mat_column_from_vector<float>({0, 0, -500.f});
mid_pt /= mid_pt.at(3, 0);
EXPECT_GT(mid_pt.at(2, 0), 0.0f);
EXPECT_LT(mid_pt.at(2, 0), 1.0f);
}
TEST(UnitTestMatStandalone, MatPerspectiveNegativeOneToOneRange)
{
// Verify existing [-1, 1] behavior with explicit template arg matches default
const auto proj_default = mat_perspective_left_handed(90.f, 16.f / 9.f, 0.1f, 1000.f);
const auto proj_explicit = mat_perspective_left_handed<float, MatStoreType::ROW_MAJOR,
NDCDepthRange::NEGATIVE_ONE_TO_ONE>(90.f, 16.f / 9.f, 0.1f, 1000.f);
EXPECT_EQ(proj_default, proj_explicit);
// Near plane should map to z ~ -1
auto near_pt = proj_default * mat_column_from_vector<float>({0, 0, 0.1f});
near_pt /= near_pt.at(3, 0);
EXPECT_NEAR(near_pt.at(2, 0), -1.0f, 1e-3f);
// Far plane should map to z ~ 1
auto far_pt = proj_default * mat_column_from_vector<float>({0, 0, 1000.f});
far_pt /= far_pt.at(3, 0);
EXPECT_NEAR(far_pt.at(2, 0), 1.0f, 1e-3f);
}
TEST(UnitTestMatStandalone, MatPerspectiveZeroToOneEquanity)
{
// LH and RH should produce same NDC for mirrored z
constexpr omath::Vector3<float> left_handed = {0, 2, 10};
constexpr omath::Vector3<float> right_handed = {0, 2, -10};
const auto proj_lh = mat_perspective_left_handed<float, MatStoreType::ROW_MAJOR, NDCDepthRange::ZERO_TO_ONE>(
90.f, 16.f / 9.f, 0.1f, 1000.f);
const auto proj_rh = mat_perspective_right_handed<float, MatStoreType::ROW_MAJOR, NDCDepthRange::ZERO_TO_ONE>(
90.f, 16.f / 9.f, 0.1f, 1000.f);
auto ndc_lh = proj_lh * mat_column_from_vector(left_handed);
auto ndc_rh = proj_rh * mat_column_from_vector(right_handed);
ndc_lh /= ndc_lh.at(3, 0);
ndc_rh /= ndc_rh.at(3, 0);
EXPECT_EQ(ndc_lh, ndc_rh);
}
TEST(UnitTestMatStandalone, MatOrthoLeftHandedZeroToOne)
{
const auto ortho = mat_ortho_left_handed<float, MatStoreType::ROW_MAJOR, NDCDepthRange::ZERO_TO_ONE>(
-1.f, 1.f, -1.f, 1.f, 0.1f, 100.f);
// Near plane should map to z ~ 0
auto near_pt = ortho * mat_column_from_vector<float>({0, 0, 0.1f});
EXPECT_NEAR(near_pt.at(2, 0), 0.0f, 1e-4f);
// Far plane should map to z ~ 1
auto far_pt = ortho * mat_column_from_vector<float>({0, 0, 100.f});
EXPECT_NEAR(far_pt.at(2, 0), 1.0f, 1e-4f);
}
TEST(UnitTestMatStandalone, MatOrthoRightHandedZeroToOne)
{
const auto ortho = mat_ortho_right_handed<float, MatStoreType::ROW_MAJOR, NDCDepthRange::ZERO_TO_ONE>(
-1.f, 1.f, -1.f, 1.f, 0.1f, 100.f);
// Near plane (negative z for RH) should map to z ~ 0
auto near_pt = ortho * mat_column_from_vector<float>({0, 0, -0.1f});
EXPECT_NEAR(near_pt.at(2, 0), 0.0f, 1e-4f);
// Far plane should map to z ~ 1
auto far_pt = ortho * mat_column_from_vector<float>({0, 0, -100.f});
EXPECT_NEAR(far_pt.at(2, 0), 1.0f, 1e-4f);
}
TEST(UnitTestMatStandalone, MatOrthoNegativeOneToOneDefault)
{
// Verify explicit [-1, 1] matches default
const auto ortho_default = mat_ortho_left_handed(-1.f, 1.f, -1.f, 1.f, 0.1f, 100.f);
const auto ortho_explicit = mat_ortho_left_handed<float, MatStoreType::ROW_MAJOR,
NDCDepthRange::NEGATIVE_ONE_TO_ONE>(-1.f, 1.f, -1.f, 1.f, 0.1f, 100.f);
EXPECT_EQ(ortho_default, ortho_explicit);
}