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#include "catch.hpp"
#include <heinz/Vectors3D.h>
TEST_CASE("KVector:BasicMethods", "")
{
R3 v;
CHECK(v.x() == double(0));
CHECK(v.y() == double(0));
CHECK(v.z() == double(0));
R3 v2(1., 2., 3.);
CHECK(v2.x() == double(1.));
CHECK(v2.y() == double(2.));
CHECK(v2.z() == double(3.));
v2.setX(10.);
v2.setY(20.);
v2.setZ(30.);
CHECK(v2.x() == double(10.));
CHECK(v2.y() == double(20.));
CHECK(v2.z() == double(30.));
v2 = {1., 2., 3.};
CHECK(v2.x() == double(1.));
CHECK(v2.y() == double(2.));
CHECK(v2.z() == double(3.));
R3 v3(1., 2., 3.);
CHECK(v3.mag2() == 1 * 1 + 2 * 2 + 3 * 3);
CHECK(v3.mag2() == v3.mag() * v3.mag());
CHECK(v3.magxy2() == 1 * 1 + 2 * 2);
CHECK(v3.magxy2() == Approx(v3.magxy() * v3.magxy()).epsilon(1e-15));
CHECK(v3.magxy() == std::sqrt(1 * 1 + 2 * 2));
CHECK(v3.mag() == std::sqrt(1 * 1 + 2 * 2 + 3 * 3));
}
TEST_CASE("KVector:BasicArithmetics", "")
{
// assignment, self assignment, copy constructor
R3 v1;
R3 v2(v1);
CHECK(v2.x() == double(0));
CHECK(v2.y() == double(0));
CHECK(v2.z() == double(0));
v2 = {1., 2., 3.};
CHECK(v2.x() == double(1));
CHECK(v2.y() == double(2));
CHECK(v2.z() == double(3));
R3 v3(v2);
CHECK(v3.x() == double(1));
CHECK(v3.y() == double(2));
CHECK(v3.z() == double(3));
R3 v4 = v3;
CHECK(v4.x() == double(1));
CHECK(v4.y() == double(2));
CHECK(v4.z() == double(3));
// +=
R3 a(1., 2., 3.);
R3 b(10., 20., 30.);
a += b;
CHECK(a.x() == double(11));
CHECK(a.y() == double(22));
CHECK(a.z() == double(33));
CHECK(b.x() == double(10));
CHECK(b.y() == double(20));
CHECK(b.z() == double(30));
a = R3(1., 2., 3.);
a += a;
CHECK(a.x() == double(2.));
CHECK(a.y() == double(4.));
CHECK(a.z() == double(6.));
// -=
a = R3(1., 2., 3.);
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Wself-assign-overloaded"
// https://stackoverflow.com/a/57646029/1017348: a pretty stupid warning
a -= a;
#pragma clang diagnostic pop
CHECK(a.x() == double(0.));
CHECK(a.y() == double(0.));
CHECK(a.z() == double(0.));
b = R3(1., 2., 3.);
a -= b;
CHECK(a.x() == double(-1.));
CHECK(a.y() == double(-2.));
CHECK(a.z() == double(-3.));
// *= and /= with scalar
a *= 10.0;
CHECK(a.x() == double(-10.));
CHECK(a.y() == double(-20.));
CHECK(a.z() == double(-30.));
a /= 10.;
CHECK(a.x() == double(-1.));
CHECK(a.y() == double(-2.));
CHECK(a.z() == double(-3.));
// unary minus
a = R3(1., 2., 3.);
b = -a;
CHECK(a.x() == double(1.));
CHECK(a.y() == double(2.));
CHECK(a.z() == double(3.));
CHECK(b.x() == double(-1.));
CHECK(b.y() == double(-2.));
CHECK(b.z() == double(-3.));
// addition of two vector
a = R3(1., 2., 3.);
b = R3(10., 20., 30.);
R3 c = a + b;
CHECK(a.x() == double(1.));
CHECK(a.y() == double(2.));
CHECK(a.z() == double(3.));
CHECK(b.x() == double(10.));
CHECK(b.y() == double(20.));
CHECK(b.z() == double(30.));
CHECK(c.x() == double(11.));
CHECK(c.y() == double(22.));
CHECK(c.z() == double(33.));
// substraction of two vectors
c = b - a;
CHECK(c.x() == double(9.));
CHECK(c.y() == double(18.));
CHECK(c.z() == double(27.));
// multiplication by a scalar
a = {1., 2., 3.};
c = 2 * a * 2;
CHECK(a.x() == double(1.));
CHECK(a.y() == double(2.));
CHECK(a.z() == double(3.));
CHECK(c.x() == double(4.));
CHECK(c.y() == double(8.));
CHECK(c.z() == double(12.));
// scalar product of two vectors
a = {1., 2., 3.};
b = {10., 10., 10.};
CHECK(a.dot(b) == double(60));
// crossproduct
c = a.cross(b);
CHECK(a.y() * b.z() - a.z() * b.y() == c.x());
CHECK(a.z() * b.x() - a.x() * b.z() == c.y());
CHECK(a.x() * b.y() - a.y() * b.x() == c.z());
// equality
a = {1., 2., 3.};
CHECK(a == R3(1., 2., 3.));
CHECK(a != R3(1., 1., 3.));
}
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