異なる種類の図形に対し一括であたり判定をチェックする

https://gyazo.com/12ac5e0f5e1b904c881cf38bb7226ae9

code:intersect.cpp

void Main()

{

Scene::SetBackground(Palette::Slategray);

const Vec2 pos{ 800 / 2, 600 / 2 };

Array<std::variant<Circle, RectF, Quad, Triangle>> shapes;

shapes.push_back(Circle(pos, 50)); //Circle

shapes.push_back(RectF(pos.movedBy(-130, -130), 100, 200)); //RectF

shapes.push_back(RectF(pos.movedBy(0, -100), 120, 100).rotated(45_deg)); //Quad

shapes.push_back(Triangle(pos, pos.movedBy(140, 0), pos.movedBy(0, 120))); //Triangle

while (System::Update())

{

for (auto& shape : shapes)

{

std::visit([](auto s) {

if (Geometry2D::Intersect(Cursor::PosF(), s)) {

s.draw(Palette::Orange);

}

s.drawFrame(3);

}, shape);

}

}

}