アイリスショットの残骸

画面を少しずつ絞って暗転させるアレです。

code:Main.cpp

# include <Siv3D.hpp> // OpenSiv3D v0.6.11

void Main()

{

Scene::SetBackground(ColorF{ 0.8, 0.9, 1.0 });

constexpr StringView ButtonText[]

{

U"Iris In",

U"Iris Out",

};

const Array<String> options

{

U"\u25cf",

U"\u2665",

U"\u2605",

};

const Polygon masks[]

{

Circle{ 0, 0, 500 }.asPolygon(),

Shape2D::Heart(700),

Shape2D::Star(1100),

};

const MSRenderTexture renderTexture{ Scene::Size() };

constexpr double TransitionTime = 1; // 秒

bool hidden = false;

bool irising = false;

double irisTime = 0;

std::size_t radioIndex = 0;

const Texture texture1{ U"example/windmill.png" };

const Texture texture2{ U"example/siv3d-kun.png" };

{

texture1.draw(40, 20);

texture2.draw(400, 100);

};

while (System::Update())

{

if (irising)

{

irisTime += (Scene::DeltaTime() * (hidden ? 1 : -1)) / TransitionTime;

if (irisTime <= 0 || 1 <= irisTime)

{

irising = false;

hidden = not hidden;

}

}

if (irising)

{

{

const ScopedRenderTarget2D target{ renderTexture.clear(Scene::GetBackground()) };

draw();

}

Graphics2D::Flush();

renderTexture.resolve();

Scene::Rect().draw(Palette::Black);

{

const ScopedRenderStates2D blend{ BlendState::Multiplicative };

renderTexture.draw();

}

}

else if (hidden)

{

Scene::Rect().draw(Palette::Black);

}

else

{

draw();

}

{

irising = true;

irisTime = (hidden ? 0 : 1);

}

SimpleGUI::RadioButtons(radioIndex, options, Vec2{ 680, 70 }, 100, not irising);

}

}