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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>
Turn 'sf::Transform' into a 'constexpr' class
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#include <SFML/System/Angle.hpp>
Use `<>` for test utilities includes SFML convention is to only use "" includes when the header is in the same directory as the file including it. Because these test util headers are in a separate directory, it makes more sense to include them via <>.
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#include <GraphicsUtil.hpp>
Add tests for sf::Transform
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#include <vector>
#include <doctest.h>
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;
Add sf::Angle Similar to sf::Time, sf::Angle provides a typesafe API for working with angles and provides named functions for converting to and from degrees and radians.
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transform.rotate(sf::degrees(90));
Simplify approximate comparisons of SFML types Co-authored-by: kimci86 <kimci86@hotmail.fr>
2022-05-03 06:38:33 +08:00
CHECK(transform == Approx(sf::Transform(0, -1, 0,
1, 0, 0,
0, 0, 1)));
Add tests for sf::Transform
2021-12-24 08:18:33 +08:00
}
SUBCASE("Around custom point")
{
sf::Transform transform;
Add sf::Angle Similar to sf::Time, sf::Angle provides a typesafe API for working with angles and provides named functions for converting to and from degrees and radians.
2022-01-23 09:11:08 +08:00
transform.rotate(sf::degrees(90), {1.0f, 0.0f});
Simplify approximate comparisons of SFML types Co-authored-by: kimci86 <kimci86@hotmail.fr>
2022-05-03 06:38:33 +08:00
CHECK(transform == Approx(sf::Transform(0, -1, 1,
1, 0, -1,
0, 0, 1)));
Add tests for sf::Transform
2021-12-24 08:18:33 +08:00
}
}
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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