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SFML/test/System/Vector2.test.cpp

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#include <SFML/System/Vector2.hpp>
#include <catch2/catch_template_test_macros.hpp>
#include <SystemUtil.hpp>
#include <type_traits>
#include <cmath>
using namespace sf::Literals;
TEMPLATE_TEST_CASE("[System] sf::Vector2", "", int, float)
{
SECTION("Type traits")
{
STATIC_CHECK(std::is_copy_constructible_v<sf::Vector2<TestType>>);
STATIC_CHECK(std::is_copy_assignable_v<sf::Vector2<TestType>>);
STATIC_CHECK(std::is_nothrow_move_constructible_v<sf::Vector2<TestType>>);
STATIC_CHECK(std::is_nothrow_move_assignable_v<sf::Vector2<TestType>>);
STATIC_CHECK(std::is_trivially_copyable_v<sf::Vector2<TestType>>);
}
SECTION("Construction")
{
SECTION("Default constructor")
{
constexpr sf::Vector2<TestType> vector;
STATIC_CHECK(vector.x == 0);
STATIC_CHECK(vector.y == 0);
}
SECTION("(x, y) coordinate constructor")
{
constexpr sf::Vector2<TestType> vector(1, 2);
STATIC_CHECK(vector.x == 1);
STATIC_CHECK(vector.y == 2);
}
SECTION("Conversion constructor")
{
constexpr sf::Vector2f sourceVector(1.0f, 2.0f);
constexpr sf::Vector2i vector(sourceVector);
STATIC_CHECK(vector.x == static_cast<int>(sourceVector.x));
STATIC_CHECK(vector.y == static_cast<int>(sourceVector.y));
}
SECTION("Length and angle constructor")
{
CHECK(sf::Vector2f(0, 0_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, 45_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, 90_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, 135_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, 180_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, 270_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, 360_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, -90_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, -180_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, -270_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(0, -360_deg) == sf::Vector2f(0, 0));
CHECK(sf::Vector2f(1, 0_deg) == sf::Vector2f(1, 0));
CHECK(sf::Vector2f(1, 45_deg) == Approx(sf::Vector2f(std::sqrt(2.f) / 2.f, std::sqrt(2.f) / 2.f)));
CHECK(sf::Vector2f(1, 90_deg) == Approx(sf::Vector2f(0, 1)));
CHECK(sf::Vector2f(1, 135_deg) == Approx(sf::Vector2f(-std::sqrt(2.f) / 2.f, std::sqrt(2.f) / 2.f)));
CHECK(sf::Vector2f(1, 180_deg) == Approx(sf::Vector2f(-1, 0)));
CHECK(sf::Vector2f(1, 270_deg) == Approx(sf::Vector2f(0, -1)));
CHECK(sf::Vector2f(1, 360_deg) == Approx(sf::Vector2f(1, 0)));
CHECK(sf::Vector2f(1, -90_deg) == Approx(sf::Vector2f(0, -1)));
CHECK(sf::Vector2f(1, -180_deg) == Approx(sf::Vector2f(-1, 0)));
CHECK(sf::Vector2f(1, -270_deg) == Approx(sf::Vector2f(0, 1)));
CHECK(sf::Vector2f(1, -360_deg) == Approx(sf::Vector2f(1, 0)));
CHECK(sf::Vector2f(-1, 0_deg) == sf::Vector2f(-1, 0));
CHECK(sf::Vector2f(-1, 45_deg) == Approx(sf::Vector2f(-std::sqrt(2.f) / 2.f, -std::sqrt(2.f) / 2.f)));
CHECK(sf::Vector2f(-1, 90_deg) == Approx(sf::Vector2f(0, -1)));
CHECK(sf::Vector2f(-1, 135_deg) == Approx(sf::Vector2f(std::sqrt(2.f) / 2.f, -std::sqrt(2.f) / 2.f)));
CHECK(sf::Vector2f(-1, 180_deg) == Approx(sf::Vector2f(1, 0)));
CHECK(sf::Vector2f(-1, 270_deg) == Approx(sf::Vector2f(0, 1)));
CHECK(sf::Vector2f(-1, 360_deg) == Approx(sf::Vector2f(-1, 0)));
CHECK(sf::Vector2f(-1, -90_deg) == Approx(sf::Vector2f(0, 1)));
CHECK(sf::Vector2f(-1, -180_deg) == Approx(sf::Vector2f(1, 0)));
CHECK(sf::Vector2f(-1, -270_deg) == Approx(sf::Vector2f(0, -1)));
CHECK(sf::Vector2f(-1, -360_deg) == Approx(sf::Vector2f(-1, 0)));
CHECK(sf::Vector2f(4.2f, 0_deg) == sf::Vector2f(4.2f, 0));
CHECK(sf::Vector2f(4.2f, 45_deg) ==
Approx(sf::Vector2f(4.2f * std::sqrt(2.f) / 2.f, 4.2f * std::sqrt(2.f) / 2.f)));
CHECK(sf::Vector2f(4.2f, 90_deg) == Approx(sf::Vector2f(0, 4.2f)));
CHECK(sf::Vector2f(4.2f, 135_deg) ==
Approx(sf::Vector2f(-4.2f * std::sqrt(2.f) / 2.f, 4.2f * std::sqrt(2.f) / 2.f)));
CHECK(sf::Vector2f(4.2f, 180_deg) == Approx(sf::Vector2f(-4.2f, 0)));
CHECK(sf::Vector2f(4.2f, 270_deg) == Approx(sf::Vector2f(0, -4.2f)));
CHECK(sf::Vector2f(4.2f, 360_deg) == Approx(sf::Vector2f(4.2f, 0)));
CHECK(sf::Vector2f(4.2f, -90_deg) == Approx(sf::Vector2f(0, -4.2f)));
CHECK(sf::Vector2f(4.2f, -180_deg) == Approx(sf::Vector2f(-4.2f, 0)));
CHECK(sf::Vector2f(4.2f, -270_deg) == Approx(sf::Vector2f(0, 4.2f)));
CHECK(sf::Vector2f(4.2f, -360_deg) == Approx(sf::Vector2f(4.2f, 0)));
}
}
SECTION("Unary operations")
{
SECTION("-vector")
{
constexpr sf::Vector2<TestType> vector(1, 2);
constexpr sf::Vector2<TestType> negatedVector = -vector;
STATIC_CHECK(negatedVector.x == -1);
STATIC_CHECK(negatedVector.y == -2);
}
}
SECTION("Arithmetic operations between two vectors")
{
sf::Vector2<TestType> firstVector(2, 5);
constexpr sf::Vector2<TestType> secondVector(8, 3);
SECTION("vector += vector")
{
firstVector += secondVector;
CHECK(firstVector.x == 10);
CHECK(firstVector.y == 8);
}
SECTION("vector -= vector")
{
firstVector -= secondVector;
CHECK(firstVector.x == -6);
CHECK(firstVector.y == 2);
}
SECTION("vector + vector")
{
const sf::Vector2<TestType> result = firstVector + secondVector;
CHECK(result.x == 10);
CHECK(result.y == 8);
}
SECTION("vector - vector")
{
const sf::Vector2<TestType> result = firstVector - secondVector;
CHECK(result.x == -6);
CHECK(result.y == 2);
}
}
SECTION("Arithmetic operations between vector and scalar value")
{
sf::Vector2<TestType> vector(26, 12);
const TestType scalar = 2;
SECTION("vector * scalar")
{
const sf::Vector2<TestType> result = vector * scalar;
CHECK(result.x == 52);
CHECK(result.y == 24);
}
SECTION("scalar * vector")
{
const sf::Vector2<TestType> result = scalar * vector;
CHECK(result.x == 52);
CHECK(result.y == 24);
}
SECTION("vector *= scalar")
{
vector *= scalar;
CHECK(vector.x == 52);
CHECK(vector.y == 24);
}
SECTION("vector / scalar")
{
const sf::Vector2<TestType> result = vector / scalar;
CHECK(result.x == 13);
CHECK(result.y == 6);
}
SECTION("vector /= scalar")
{
vector /= scalar;
CHECK(vector.x == 13);
CHECK(vector.y == 6);
}
}
SECTION("Comparison operations (two equal and one different vector)")
{
constexpr sf::Vector2<TestType> firstEqualVector(1, 5);
constexpr sf::Vector2<TestType> secondEqualVector(1, 5);
constexpr sf::Vector2<TestType> differentVector(6, 9);
SECTION("vector == vector")
{
STATIC_CHECK(firstEqualVector == secondEqualVector);
STATIC_CHECK_FALSE(firstEqualVector == differentVector);
}
SECTION("vector != vector")
{
STATIC_CHECK(firstEqualVector != differentVector);
STATIC_CHECK_FALSE(firstEqualVector != secondEqualVector);
}
}
SECTION("Structured bindings")
{
sf::Vector2<TestType> vector(1, 2); // NOLINT(misc-const-correctness)
SECTION("destructure by value")
{
auto [x, y] = vector;
CHECK(x == 1);
CHECK(y == 2);
STATIC_CHECK(std::is_same_v<decltype(x), decltype(vector.x)>);
x = 3;
CHECK(x == 3);
CHECK(vector.x == 1);
}
SECTION("destructure by ref")
{
auto& [x, y] = vector;
CHECK(x == 1);
CHECK(y == 2);
STATIC_CHECK(std::is_same_v<decltype(x), decltype(vector.x)>);
x = 3;
CHECK(x == 3);
CHECK(vector.x == 3);
}
}
SECTION("Length and normalization")
{
constexpr sf::Vector2f v(2.4f, 3.0f);
CHECK(v.length() == Approx(3.84187f));
CHECK(v.lengthSquared() == Approx(14.7599650969f));
CHECK(v.normalized() == Approx(sf::Vector2f(0.624695f, 0.780869f)));
constexpr sf::Vector2f w(-0.7f, -2.2f);
CHECK(w.length() == Approx(2.30868f));
CHECK(w.lengthSquared() == Approx(5.3300033f));
CHECK(w.normalized() == Approx(sf::Vector2f(-0.303204f, -0.952926f)));
}
SECTION("Rotations and angles")
{
constexpr sf::Vector2f v(2.4f, 3.0f);
CHECK(v.angle() == Approx(51.3402_deg));
CHECK(sf::Vector2f::UnitX.angleTo(v) == Approx(51.3402_deg));
CHECK(sf::Vector2f::UnitY.angleTo(v) == Approx(-38.6598_deg));
constexpr sf::Vector2f w(-0.7f, -2.2f);
CHECK(w.angle() == Approx(-107.65_deg));
CHECK(sf::Vector2f::UnitX.angleTo(w) == Approx(-107.65_deg));
CHECK(sf::Vector2f::UnitY.angleTo(w) == Approx(162.35_deg));
CHECK(v.angleTo(w) == Approx(-158.9902_deg));
CHECK(w.angleTo(v) == Approx(158.9902_deg));
const float ratio = w.length() / v.length();
CHECK(v.rotatedBy(-158.9902_deg) * ratio == Approx(w));
CHECK(w.rotatedBy(158.9902_deg) / ratio == Approx(v));
STATIC_CHECK(v.perpendicular() == sf::Vector2f(-3.0f, 2.4f));
STATIC_CHECK(v.perpendicular().perpendicular().perpendicular().perpendicular() == v);
CHECK(v.rotatedBy(90_deg) == Approx(sf::Vector2f(-3.0f, 2.4f)));
CHECK(v.rotatedBy(27.14_deg) == Approx(sf::Vector2f(0.767248f, 3.76448f)));
CHECK(v.rotatedBy(-36.11_deg) == Approx(sf::Vector2f(3.70694f, 1.00925f)));
}
SECTION("Products and quotients")
{
constexpr sf::Vector2f v(2.4f, 3.0f);
constexpr sf::Vector2f w(-0.7f, -2.2f);
CHECK(v.dot(w) == Approx(-8.28f));
CHECK(w.dot(v) == Approx(-8.28f));
CHECK(v.cross(w) == Approx(-3.18f));
CHECK(w.cross(v) == Approx(+3.18f));
CHECK(v.componentWiseMul(w) == Approx(sf::Vector2f(-1.68f, -6.6f)));
CHECK(w.componentWiseMul(v) == Approx(sf::Vector2f(-1.68f, -6.6f)));
CHECK(v.componentWiseDiv(w) == Approx(sf::Vector2f(-3.428571f, -1.363636f)));
CHECK(w.componentWiseDiv(v) == Approx(sf::Vector2f(-0.291666f, -0.733333f)));
}
SECTION("Projection")
{
constexpr sf::Vector2f v(2.4f, 3.0f);
constexpr sf::Vector2f w(-0.7f, -2.2f);
CHECK(v.projectedOnto(w) == Approx(sf::Vector2f(1.087430f, 3.417636f)));
CHECK(v.projectedOnto(w) == Approx(-1.55347f * w));
CHECK(w.projectedOnto(v) == Approx(sf::Vector2f(-1.346342f, -1.682927f)));
CHECK(w.projectedOnto(v) == Approx(-0.560976f * v));
CHECK(v.projectedOnto(sf::Vector2f::UnitX) == Approx(sf::Vector2f(2.4f, 0.0f)));
CHECK(v.projectedOnto(sf::Vector2f::UnitY) == Approx(sf::Vector2f(0.0f, 3.0f)));
}
SECTION("Constexpr support")
{
constexpr sf::Vector2<TestType> v(1, 2);
constexpr sf::Vector2<TestType> w(2, -6);
STATIC_CHECK(v.x == 1);
STATIC_CHECK(v.y == 2);
STATIC_CHECK(v + w == sf::Vector2<TestType>(3, -4));
STATIC_CHECK(v.lengthSquared() == 5);
STATIC_CHECK(v.perpendicular() == sf::Vector2<TestType>(-2, 1));
STATIC_CHECK(v.dot(w) == -10);
STATIC_CHECK(v.cross(w) == -10);
STATIC_CHECK(v.componentWiseMul(w) == sf::Vector2<TestType>(2, -12));
STATIC_CHECK(w.componentWiseDiv(v) == sf::Vector2<TestType>(2, -3));
}
}
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