Function test4

CPP/Examples/VariableOffset/VariableOffset.cpp:104–129

}

void test4() {

  int64_t const scale = 100;
  Paths64 solution;
  Paths64 subject = { Ellipse(ScaleRect<int64_t,int64_t>(Rect64(10, 10, 50, 50), scale)) };

  ClipperOffset co;
  co.AddPaths(subject, JoinType::Round, EndType::Round);
  co.Execute(
    [scale](const Path64& path,
      const PathD& path_norms, size_t curr_idx, size_t prev_idx) {
        //double vertex_sin_a = CrossProduct(path_norms[curr_idx], path_norms[prev_idx]);
        //double vertex_cos_a = DotProduct(path_norms[curr_idx], path_norms[prev_idx]);
        //double vertex_angle = std::atan2(vertex_sin_a, vertex_cos_a);
        //double edge_angle = std::atan2(path_norms[curr_idx].y, path_norms[curr_idx].x);
        double sin_edge = path_norms[curr_idx].y;
        return Sqr(sin_edge) * 3 * scale; }
  , solution);

  std::string filename = "test4.svg";
  SvgWriter svg;
  SvgAddOpenSubject(svg, subject, FillRule::NonZero);
  SvgAddSolution(svg, solution, FillRule::NonZero, false);
  SvgSaveToFile(svg, filename, 400, 400);
  System(filename);
}

void test5() {