simple linux cam

line:    anyPoint(u)    = Origin + u * Dir
circle:  anyPoint(u)    = Origin + r * cos(u) * Dir{x} + sin(u) * Dir{y}
ellipse: anyPoint(u)    = Origin + r_{maj} * cos(u) * Dir{maj} + r_{min} * sin(u) * Dir_{min}
plane:   anyPoint(u, v) = Origin + u * Dir{u} + v * Dir{v}

    //! 0. Draw the raw material.
    Handle(AIS_Shape) myShape=CirlceShape({50,50,0},{0,50,0}).ShapeTopPlane();
    occt_viewer->show_shape(myShape);


    //! 1. Draw a contour offset line.
    myShape=LineShape({50,10,0},{80,50,0}).Shape();
    occt_viewer->show_shape(myShape);

    //! 2. Draw a contour offset line.
    myShape=LineShape({80,50,0},{200,50,0}).Shape();
    occt_viewer->show_shape(myShape);

    //! 3. Draw a contour offset line.
    myShape=LineShape({200,50,0},{200,200,0}).Shape();
    occt_viewer->show_shape(myShape);


    //! Check if 1 is inside the circle, checking startpoint.
    int InPolygon=0;
    PointInPolygon({50,10,0}).TubeShape({50,50,0},50,InPolygon);
    std::cout<<"Item 1 startpoint: InPolygon: "<<InPolygon<<std::endl;

    //! Check if 1 is inside the circle, checking endpoint.
    InPolygon=0;
    PointInPolygon({80,50,0}).TubeShape({50,50,0},50,InPolygon);
    std::cout<<"Item 1 endpoint: InPolygon: "<<InPolygon<<std::endl;


    //! Check if 2 is inside the circle, checking startpoint.
    InPolygon=0;
    PointInPolygon({80,50,0}).TubeShape({50,50,0},50,InPolygon);
    std::cout<<"Item 2 startpoint: InPolygon: "<<InPolygon<<std::endl;

    //! Check if 2 is inside the circle, checking endpoint.
    InPolygon=0;
    PointInPolygon({200,50,0}).TubeShape({50,50,0},50,InPolygon);
    std::cout<<"Item 2 endpoint: InPolygon: "<<InPolygon<<std::endl;


    //! Check if 3 is inside the circle, checking startpoint.
    InPolygon=0;
    PointInPolygon({200,50,0}).TubeShape({50,50,0},50,InPolygon);
    std::cout<<"Item 3 startpoint: InPolygon: "<<InPolygon<<std::endl;

    //! Check if 3 is inside the circle, checking endpoint.
    InPolygon=0;
    PointInPolygon({200,200,0}).TubeShape({50,50,0},50,InPolygon);
    std::cout<<"Item 3 endpoint: InPolygon: "<<InPolygon<<std::endl;