126 lines
4.9 KiB
C++
126 lines
4.9 KiB
C++
#include <Nazara/Math/Frustum.hpp>
|
|
#include <catch2/catch_approx.hpp>
|
|
#include <catch2/catch_test_macros.hpp>
|
|
|
|
SCENARIO("Frustum", "[MATH][FRUSTUM]")
|
|
{
|
|
GIVEN("One frustum (90, 1, 1, 1000, (0, 0, 0), (1, 0, 0))")
|
|
{
|
|
Nz::Frustumf frustum = Nz::Frustumf::Build(Nz::DegreeAnglef(90.f), 1.f, 1.f, 1000.f, Nz::Vector3f::Zero(), Nz::Vector3f::UnitX());
|
|
|
|
WHEN("We ask for intersection with objects outside the frustum")
|
|
{
|
|
GIVEN("Bounding volumes")
|
|
{
|
|
Nz::BoundingVolumef bv(Nz::Boxf(Nz::Vector3f::Zero(), Nz::Vector3f::Unit() * 10.f));
|
|
bv.Update(Nz::Matrix4f::Identity());
|
|
|
|
CHECK_FALSE(frustum.Contains(bv));
|
|
CHECK(frustum.Intersect(bv) == Nz::IntersectionSide::Intersecting);
|
|
|
|
bv.Update(Nz::Matrix4f::Translate(Nz::Vector3f::UnitX() * -50.f));
|
|
|
|
CHECK_FALSE(frustum.Contains(bv));
|
|
CHECK(frustum.Intersect(bv) == Nz::IntersectionSide::Outside);
|
|
|
|
bv.Update(Nz::Matrix4f::Translate(Nz::Vector3f::UnitX() * 50.f));
|
|
|
|
CHECK(frustum.Contains(bv));
|
|
CHECK(frustum.Intersect(bv) == Nz::IntersectionSide::Inside);
|
|
}
|
|
|
|
GIVEN("Boxes")
|
|
{
|
|
Nz::Boxf insideBox(Nz::Vector3f::UnitX() * 50.f, Nz::Vector3f::Unit() * 10.f);
|
|
Nz::Boxf intersectingBox(Nz::Vector3f::Zero(), Nz::Vector3f::Unit() * 10.f);
|
|
Nz::Boxf outsideBox(Nz::Vector3f::UnitX() * -50.f, Nz::Vector3f::Unit() * 10.f);
|
|
|
|
CHECK(frustum.Contains(insideBox));
|
|
CHECK_FALSE(frustum.Contains(intersectingBox));
|
|
CHECK_FALSE(frustum.Contains(outsideBox));
|
|
|
|
CHECK(frustum.Intersect(insideBox) == Nz::IntersectionSide::Inside);
|
|
CHECK(frustum.Intersect(intersectingBox) == Nz::IntersectionSide::Intersecting);
|
|
CHECK(frustum.Intersect(outsideBox) == Nz::IntersectionSide::Outside);
|
|
}
|
|
|
|
THEN("These results are expected")
|
|
{
|
|
Nz::OrientedBoxf obb(Nz::Boxf(Nz::Vector3f::Zero(), Nz::Vector3f::Unit() * 0.9f));
|
|
obb.Update(Nz::Matrix4f::Identity());
|
|
REQUIRE(Nz::IntersectionSide::Outside == frustum.Intersect(obb));
|
|
REQUIRE(Nz::IntersectionSide::Outside == frustum.Intersect(Nz::Spheref(Nz::Vector3f::Zero(), 0.5f)));
|
|
Nz::Vector3f tmp = Nz::Vector3f::Zero();
|
|
REQUIRE(Nz::IntersectionSide::Outside == frustum.Intersect(&tmp, 1));
|
|
tmp = Nz::Vector3f::UnitX() * -10.f;
|
|
REQUIRE(Nz::IntersectionSide::Outside == frustum.Intersect(&tmp, 1));
|
|
}
|
|
}
|
|
|
|
WHEN("We ask for intersection with objects inside the frustum")
|
|
{
|
|
THEN("These results are expected")
|
|
{
|
|
Nz::BoundingVolumef bv(Nz::Boxf(500.f, -0.5f, -0.5f, 1.f, 1.f, 1.f));
|
|
bv.Update(Nz::Matrix4f::Identity());
|
|
|
|
REQUIRE(Nz::IntersectionSide::Inside == frustum.Intersect(bv));
|
|
REQUIRE(Nz::IntersectionSide::Inside == frustum.Intersect(Nz::Boxf(Nz::Vector3f::UnitX() * 500.f, Nz::Vector3f::Unit())));
|
|
Nz::OrientedBoxf obb(Nz::Boxf(Nz::Vector3f::UnitX() * 100.f, Nz::Vector3f::Unit()));
|
|
obb.Update(Nz::Matrix4f::Identity());
|
|
REQUIRE(Nz::IntersectionSide::Inside == frustum.Intersect(obb));
|
|
REQUIRE(Nz::IntersectionSide::Inside == frustum.Intersect(Nz::Spheref(Nz::Vector3f::UnitX() * 100.f, 0.5f)));
|
|
Nz::Vector3f tmp = Nz::Vector3f::UnitX() * 100.f;
|
|
REQUIRE(Nz::IntersectionSide::Inside == frustum.Intersect(&tmp, 1));
|
|
}
|
|
}
|
|
|
|
WHEN("We ask for contains with objects outside the frustum")
|
|
{
|
|
THEN("These results are expected")
|
|
{
|
|
Nz::BoundingVolumef bv(Nz::Boxf(0.f, -0.25f, -0.25f, 0.5f, 0.5f, 0.5f));
|
|
bv.Update(Nz::Matrix4f::Identity());
|
|
CHECK(!frustum.Contains(bv));
|
|
CHECK(!frustum.Contains(Nz::Boxf(0.f, -0.25f, -0.25f, 0.5f, 0.5f, 0.5f)));
|
|
Nz::OrientedBoxf obb(Nz::Boxf(0.f, -0.25f, -0.25f, 0.5f, 0.5f, 0.5f));
|
|
obb.Update(Nz::Matrix4f::Identity());
|
|
CHECK(!frustum.Contains(obb));
|
|
CHECK(!frustum.Contains(Nz::Spheref(Nz::Vector3f::Zero(), 0.5f)));
|
|
Nz::Vector3f tmp = Nz::Vector3f::Zero();
|
|
CHECK(!frustum.Contains(&tmp, 1));
|
|
}
|
|
}
|
|
|
|
WHEN("We ask for contains with objects inside the frustum")
|
|
{
|
|
THEN("These results are expected")
|
|
{
|
|
Nz::BoundingVolumef bv(Nz::Boxf(500.f, -0.5f, -0.5f, 1.f, 1.f, 1.f));
|
|
bv.Update(Nz::Matrix4f::Identity());
|
|
CHECK(frustum.Contains(bv));
|
|
CHECK(frustum.Contains(Nz::Boxf(500.f, -0.5f, -0.5f, 1.f, 1.f, 1.f)));
|
|
Nz::OrientedBoxf obb(Nz::Boxf(500.f, -0.5f, -0.5f, 1.f, 1.f, 1.f));
|
|
obb.Update(Nz::Matrix4f::Identity());
|
|
CHECK(frustum.Contains(obb));
|
|
CHECK(frustum.Contains(Nz::Spheref(Nz::Vector3f::UnitX() * 500.f, 1.f)));
|
|
Nz::Vector3f tmp = Nz::Vector3f::UnitX() * 500.f;
|
|
CHECK(frustum.Contains(&tmp, 1));
|
|
}
|
|
}
|
|
|
|
WHEN("We test for edge cases")
|
|
{
|
|
THEN("Implementation defined these")
|
|
{
|
|
Nz::BoundingVolumef nullVolume = Nz::BoundingVolumef::Null();
|
|
CHECK(!frustum.Contains(nullVolume));
|
|
Nz::BoundingVolumef infiniteVolume = Nz::BoundingVolumef::Infinite();
|
|
CHECK(frustum.Contains(infiniteVolume));
|
|
REQUIRE(frustum.Intersect(nullVolume) == Nz::IntersectionSide::Outside);
|
|
REQUIRE(frustum.Intersect(infiniteVolume) == Nz::IntersectionSide::Intersecting);
|
|
}
|
|
}
|
|
}
|
|
}
|