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- # include <Siv3D.hpp> // OpenSiv3D v0.4.0
- void Main()
- {
- RectF r1(100, 100, 300, 300);
- RectF r2(50, 50, 50, 50);
- RectF r3(150, 150, 50, 50);
- Scene::SetBackground(Palette::Skyblue);
- while (System::Update())
- {
- Polygon polygon(r1.asPolygon());
- ClearPrint();
- Print << Geometry2D::Subtract(polygon, r2.asPolygon()).size();
- polygon = Geometry2D::Subtract(polygon, r2.asPolygon()).front();
- // 表示
- Geometry2D::Subtract(polygon, r3.asPolygon()).back().movedBy(350, 0).draw(ColorF(Palette::Red, 0.5)).drawWireframe(1.0, Palette::Red);
- Print << Geometry2D::Subtract(polygon, r3.asPolygon()).size();
- polygon = Geometry2D::Subtract(polygon, r3.asPolygon()).front();
- r2.setCenter(Cursor::PosF());
- r1.drawFrame(2.0, Palette::Black);
- r2.drawFrame(2.0, Palette::Black);
- r3.drawFrame(2.0, Palette::Black);
- polygon.draw(ColorF(Palette::Red, 0.5));
- polygon.drawWireframe(1.0, Palette::Red);
- }
- }
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