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// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
// SPDX-License-Identifier: MIT
#include "UnitTestFramework.h"
#include <Jolt/Geometry/Plane.h>
TEST_SUITE("PlaneTests")
{
TEST_CASE("TestPlaneSignedDistance")
{
Plane p = Plane::sFromPointAndNormal(Vec3(0, 2, 0), Vec3(0, 1, 0));
CHECK(p.SignedDistance(Vec3(5, 7, 0)) == 5.0f);
CHECK(p.SignedDistance(Vec3(5, -3, 0)) == -5.0f);
}
TEST_CASE("TestPlaneGetTransformed")
{
Mat44 transform = Mat44::sRotationTranslation(Quat::sRotation(Vec3(1.0f, 2.0f, 3.0f).Normalized(), 0.1f * JPH_PI), Vec3(5.0f, -7.0f, 9.0f));
Vec3 point = Vec3(11.0f, 13.0f, 15.0f);
Vec3 normal = Vec3(-3.0f, 5.0f, -7.0f).Normalized();
Plane p1 = Plane::sFromPointAndNormal(point, normal).GetTransformed(transform);
Plane p2 = Plane::sFromPointAndNormal(transform * point, transform.Multiply3x3(normal));
CHECK_APPROX_EQUAL(p1.GetNormal(), p2.GetNormal());
CHECK_APPROX_EQUAL(p1.GetConstant(), p2.GetConstant());
}
TEST_CASE("TestPlaneIntersectPlanes")
{
Plane p1 = Plane::sFromPointAndNormal(Vec3(0, 2, 0), Vec3(0, 1, 0));
Plane p2 = Plane::sFromPointAndNormal(Vec3(3, 0, 0), Vec3(1, 0, 0));
Plane p3 = Plane::sFromPointAndNormal(Vec3(0, 0, 4), Vec3(0, 0, 1));
{
Vec3 point;
bool found = Plane::sIntersectPlanes(p1, p2, p3, point);
CHECK(found);
CHECK(point == Vec3(3, 2, 4));
}
{
Plane p4 = Plane::sFromPointAndNormal(Vec3(0, 3, 0), Vec3(0, 1, 0));
Vec3 point;
bool found = Plane::sIntersectPlanes(p1, p2, p4, point);
CHECK_FALSE(found);
}
}
}