3D交差判定 - Siv3D/Reference-JP GitHub Wiki

# include <Siv3D.hpp>

void Main()
{
    Array<Box> boxes;

    for (auto i : step(50))
    {
        boxes.emplace_back(RandomVec3({ -20, 20 }, { -20, 20 }, { -20, 20 }), 3.0);

        boxes[i].rotation.rotateRollPitchYaw(Random(Pi), Random(Pi), Random(Pi));
    }

    while (System::Update())
    {
        Graphics3D::FreeCamera();

        for (auto& box : boxes)
        {
            box.rotation.rotateRollPitchYaw(0.01, 0.01, 0.01);
        }

        for (const auto& box : boxes)
        {
            box.draw(box.intersects(Mouse::Ray()) ? Palette::Yellow : Palette::White);
        }
    }
}