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SFML/test/Graphics/Transform.cpp

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Add tests for sf::Transform
2021-12-24 08:18:33 +08:00
#include <SFML/Graphics/Transform.hpp>
#include "GraphicsUtil.hpp"
#include "SystemUtil.hpp"
#include <vector>
#include <doctest.h>
using doctest::Approx;
namespace std
{
std::ostream& operator<<(std::ostream& out, const std::vector<float>& vector)
{
out << "{ ";
for (size_t i = 0; i + 1 < vector.size(); ++i)
out << vector[i] << ", ";
out << vector.back() << " }";
return out;
}
}
TEST_CASE("sf::Transform class - [graphics]")
{
SUBCASE("Construction")
{
SUBCASE("Default constructor")
{
CHECK(sf::Transform() == sf::Transform::Identity);
}
SUBCASE("3x3 matrix constructor")
{
const sf::Transform transform(10.0f, 11.0f, 12.0f,
13.0f, 14.0f, 15.0f,
16.0f, 17.0f, 18.0f);
const std::vector<float> matrix(transform.getMatrix(), transform.getMatrix() + 16);
CHECK(matrix == std::vector<float>{10.0f, 13.0f, 0.0f, 16.0f,
11.0f, 14.0f, 0.0f, 17.0f,
0.0f, 0.0f, 1.0f, 0.0f,
12.0f, 15.0f, 0.0f, 18.0f});
}
}
SUBCASE("Identity matrix")
{
const std::vector<float> matrix(sf::Transform::Identity.getMatrix(), sf::Transform::Identity.getMatrix() + 16);
CHECK(matrix == std::vector<float>{1.0f, 0.0f, 0.0f, 0.0f,
0.0f, 1.0f, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f});
}
SUBCASE("getInverse()")
{
CHECK(sf::Transform::Identity.getInverse() == sf::Transform::Identity);
CHECK(sf::Transform(1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 6.0f, 7.0f, 8.0f, 9.0f).getInverse() == sf::Transform::Identity);
CHECK(sf::Transform(1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 4.0f, 3.0f, 2.0f, 1.0f).getInverse() == sf::Transform(0.375f, -0.5f, 0.875f, -1.0f, 1.0f, -1.0f, 0.875f, -0.5f, 0.375f));
}
SUBCASE("transformPoint()")
{
CHECK(sf::Transform::Identity.transformPoint({-10.0f, -10.0f}) == sf::Vector2f(-10.0f, -10.0f));
CHECK(sf::Transform::Identity.transformPoint({-1.0f, -1.0f}) == sf::Vector2f(-1.0f, -1.0f));
CHECK(sf::Transform::Identity.transformPoint({-1.0f, 0.0f}) == sf::Vector2f(-1.0f, 0.0f));
CHECK(sf::Transform::Identity.transformPoint({0.0f, 0.0f}) == sf::Vector2f(0.0f, 0.0f));
CHECK(sf::Transform::Identity.transformPoint({0.0f, 1.0f}) == sf::Vector2f(0.0f, 1.0f));
CHECK(sf::Transform::Identity.transformPoint({1.0f, 1.0f}) == sf::Vector2f(1.0f, 1.0f));
CHECK(sf::Transform::Identity.transformPoint({10.0f, 10.0f}) == sf::Vector2f(10.0f, 10.0f));
const sf::Transform transform(1.0f, 2.0f, 3.0f,
4.0f, 5.0f, 4.0f,
3.0f, 2.0f, 1.0f);
CHECK(transform.transformPoint({-1.0f, -1.0f}) == sf::Vector2f(0.0f, -5.0f));
CHECK(transform.transformPoint({0.0f, 0.0f}) == sf::Vector2f(3.0f, 4.0f));
CHECK(transform.transformPoint({1.0f, 1.0f}) == sf::Vector2f(6.0f, 13.0f));
}
SUBCASE("transformRect()")
{
CHECK(sf::Transform::Identity.transformRect({{-200.0f, -200.0f}, {-100.0f, -100.0f}}) == sf::FloatRect({-300.0f, -300.0f}, {100.0f, 100.0f}));
CHECK(sf::Transform::Identity.transformRect({{0.0f, 0.0f}, {0.0f, 0.0f}}) == sf::FloatRect({0.0f, 0.0f}, {0.0f, 0.0f}));
CHECK(sf::Transform::Identity.transformRect({{100.0f, 100.0f}, {200.0f, 200.0f}}) == sf::FloatRect({100.0f, 100.0f}, {200.0f, 200.0f}));
const sf::Transform transform(1.0f, 2.0f, 3.0f,
4.0f, 5.0f, 4.0f,
3.0f, 2.0f, 1.0f);
CHECK(transform.transformRect({{-100.0f, -100.0f}, {200.0f, 200.0f}}) == sf::FloatRect({-297.0f, -896.0f}, {600.0f, 1800.0f}));
CHECK(transform.transformRect({{0.0f, 0.0f}, {0.0f, 0.0f}}) == sf::FloatRect({3.0f, 4.0f}, {0.0f, 0.0f}));
CHECK(transform.transformRect({{100.0f, 100.0f}, {200.0f, 200.0f}}) == sf::FloatRect({303.0f, 904.0f}, {600.0f, 1800.0f}));
}
SUBCASE("combine()")
{
auto identity = sf::Transform::Identity;
CHECK(identity.combine(sf::Transform::Identity) == sf::Transform::Identity);
CHECK(identity.combine(sf::Transform::Identity).combine(sf::Transform::Identity) == sf::Transform::Identity);
sf::Transform transform(1.0f, 2.0f, 3.0f,
4.0f, 5.0f, 4.0f,
3.0f, 2.0f, 1.0f);
CHECK(identity.combine(transform) == transform);
CHECK(transform.combine(sf::Transform::Identity) == transform);
CHECK(transform.combine(transform) == sf::Transform(18.0f, 18.0f, 14.0f,
36.0f, 41.0f, 36.0f,
14.0f, 18.0f, 18.0f));
CHECK(transform.combine(sf::Transform(10.0f, 2.0f, 3.0f,
4.0f, 50.0f, 40.0f,
30.0f, 20.0f, 10.0f))
== sf::Transform( 672.0f, 1216.0f, 914.0f,
1604.0f, 2842.0f, 2108.0f,
752.0f, 1288.0f, 942.0f));
}
SUBCASE("translate()")
{
sf::Transform transform(9, 8, 7, 6, 5, 4, 3, 2, 1);
CHECK(transform.translate({10.0f, 20.0f}) == sf::Transform(9, 8, 257, 6, 5, 164, 3, 2, 71));
CHECK(transform.translate({10.0f, 20.0f}) == sf::Transform(9, 8, 507, 6, 5, 324, 3, 2, 141));
}
SUBCASE("rotate()")
{
SUBCASE("Around origin")
{
sf::Transform transform;
transform.rotate(90);
CHECK(transform.getMatrix()[0] == Approx(0));
CHECK(transform.getMatrix()[4] == Approx(-1));
CHECK(transform.getMatrix()[12] == Approx(0));
CHECK(transform.getMatrix()[1] == Approx(1));
CHECK(transform.getMatrix()[5] == Approx(0));
CHECK(transform.getMatrix()[13] == Approx(0));
CHECK(transform.getMatrix()[3] == Approx(0));
CHECK(transform.getMatrix()[7] == Approx(0));
CHECK(transform.getMatrix()[15] == Approx(1));
}
SUBCASE("Around custom point")
{
sf::Transform transform;
transform.rotate(90, {1.0f, 0.0f});
CHECK(transform.getMatrix()[0] == Approx(0));
CHECK(transform.getMatrix()[4] == Approx(-1));
CHECK(transform.getMatrix()[12] == Approx(1));
CHECK(transform.getMatrix()[1] == Approx(1));
CHECK(transform.getMatrix()[5] == Approx(0));
CHECK(transform.getMatrix()[13] == Approx(-1));
CHECK(transform.getMatrix()[3] == Approx(0));
CHECK(transform.getMatrix()[7] == Approx(0));
CHECK(transform.getMatrix()[15] == Approx(1));
}
}
SUBCASE("scale()")
{
SUBCASE("About origin")
{
sf::Transform transform(1, 2, 3, 4, 5, 4, 3, 2, 1);
CHECK(transform.scale({2.0f, 4.0f}) == sf::Transform(2, 8, 3, 8, 20, 4, 6, 8, 1));
CHECK(transform.scale({0.0f, 0.0f}) == sf::Transform(0, 0, 3, 0, 0, 4, 0, 0, 1));
CHECK(transform.scale({10.0f, 10.0f}) == sf::Transform(0, 0, 3, 0, 0, 4, 0, 0, 1));
}
SUBCASE("About custom point")
{
sf::Transform transform(1, 2, 3, 4, 5, 4, 3, 2, 1);
CHECK(transform.scale({1.0f, 2.0f}, {1.0f, 0.0f}) == sf::Transform(1, 4, 3, 4, 10, 4, 3, 4, 1));
CHECK(transform.scale({0.0f, 0.0f}, {1.0f, 0.0f}) == sf::Transform(0, 0, 4, 0, 0, 8, 0, 0, 4));
}
}
SUBCASE("Operators")
{
SUBCASE("operator*")
{
CHECK(sf::Transform::Identity * sf::Transform::Identity == sf::Transform::Identity);
CHECK(sf::Transform::Identity * sf::Transform::Identity * sf::Transform::Identity == sf::Transform::Identity);
const sf::Transform transform(1.0f, 2.0f, 3.0f,
4.0f, 5.0f, 4.0f,
3.0f, 2.0f, 1.0f);
CHECK(sf::Transform::Identity * transform == transform);
CHECK(transform * sf::Transform::Identity == transform);
CHECK(transform * transform == sf::Transform(18.0f, 18.0f, 14.0f,
36.0f, 41.0f, 36.0f,
14.0f, 18.0f, 18.0f));
CHECK(transform * sf::Transform(10.0f, 2.0f, 3.0f,
4.0f, 50.0f, 40.0f,
30.0f, 20.0f, 10.0f)
== sf::Transform(108.0f, 162.0f, 113.0f,
180.0f, 338.0f, 252.0f,
68.0f, 126.0f, 99.0f));
}
SUBCASE("operator*=")
{
sf::Transform transform(1.0f, 2.0f, 3.0f,
4.0f, 5.0f, 4.0f,
3.0f, 2.0f, 1.0f);
transform *= sf::Transform::Identity;
CHECK(transform == sf::Transform(1.0f, 2.0f, 3.0f, 4.0f, 5.0f, 4.0f, 3.0f, 2.0f, 1.0f));
transform *= transform;
CHECK(transform == sf::Transform(18.0f, 18.0f, 14.0f,
36.0f, 41.0f, 36.0f,
14.0f, 18.0f, 18.0f));
transform *= sf::Transform(10.0f, 2.0f, 3.0f,
4.0f, 50.0f, 40.0f,
30.0f, 20.0f, 10.0f);
CHECK(transform == sf::Transform( 672.0f, 1216.0f, 914.0f,
1604.0f, 2842.0f, 2108.0f,
752.0f, 1288.0f, 942.0f));
}
SUBCASE("operator* with vector")
{
CHECK(sf::Transform::Identity * sf::Vector2f(-10.0f, -10.0f) == sf::Vector2f(-10.0f, -10.0f));
CHECK(sf::Transform::Identity * sf::Vector2f(-1.0f, -1.0f) == sf::Vector2f(-1.0f, -1.0f));
CHECK(sf::Transform::Identity * sf::Vector2f(-1.0f, 0.0f) == sf::Vector2f(-1.0f, 0.0f));
CHECK(sf::Transform::Identity * sf::Vector2f(0.0f, 0.0f) == sf::Vector2f(0.0f, 0.0f));
CHECK(sf::Transform::Identity * sf::Vector2f(0.0f, 1.0f) == sf::Vector2f(0.0f, 1.0f));
CHECK(sf::Transform::Identity * sf::Vector2f(1.0f, 1.0f) == sf::Vector2f(1.0f, 1.0f));
CHECK(sf::Transform::Identity * sf::Vector2f(10.0f, 10.0f) == sf::Vector2f(10.0f, 10.0f));
const sf::Transform transform(1.0f, 2.0f, 3.0f,
4.0f, 5.0f, 4.0f,
3.0f, 2.0f, 1.0f);
CHECK(transform * sf::Vector2f(-1.0f, -1.0f) == sf::Vector2f(0.0f, -5.0f));
CHECK(transform * sf::Vector2f(0.0f, 0.0f) == sf::Vector2f(3.0f, 4.0f));
CHECK(transform * sf::Vector2f(1.0f, 1.0f) == sf::Vector2f(6.0f, 13.0f));
}
SUBCASE("operator==")
{
CHECK(sf::Transform::Identity == sf::Transform::Identity);
CHECK(sf::Transform() == sf::Transform());
CHECK(sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0) == sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK(sf::Transform(0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f)
== sf::Transform(0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f));
CHECK(sf::Transform(1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f)
== sf::Transform(1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f));
}
SUBCASE("operator!=")
{
CHECK_FALSE(sf::Transform::Identity != sf::Transform::Identity);
CHECK_FALSE(sf::Transform() != sf::Transform());
CHECK_FALSE(sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK_FALSE(sf::Transform(0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f)
!= sf::Transform(0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f, 0.0001f));
CHECK_FALSE(sf::Transform(1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f)
!= sf::Transform(1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f, 1000.0f));
CHECK(sf::Transform(1, 0, 0, 0, 0, 0, 0, 0, 0) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK(sf::Transform(0, 1, 0, 0, 0, 0, 0, 0, 0) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK(sf::Transform(0, 0, 1, 0, 0, 0, 0, 0, 0) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK(sf::Transform(0, 0, 0, 1, 0, 0, 0, 0, 0) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK(sf::Transform(0, 0, 0, 0, 1, 0, 0, 0, 0) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK(sf::Transform(0, 0, 0, 0, 0, 1, 0, 0, 0) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK(sf::Transform(0, 0, 0, 0, 0, 0, 1, 0, 0) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK(sf::Transform(0, 0, 0, 0, 0, 0, 0, 1, 0) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
CHECK(sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 1) != sf::Transform(0, 0, 0, 0, 0, 0, 0, 0, 0));
}
}
}
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