RectClip cannot get right result about clipper2

[AngusJohnson]

the red clip rect is long and narrow and it should not appear in the solution.

The red clip rect region was only included in the image above to show the location of the clipping rect.
It's not part of the solution.
The only parts of the solution in the image above are the 4 dark green very narrow rectangles.
These correspond to the 4 regions indicated by the coordinates in the box immediately above the image.

the solution's bounding box should have similar width and height as the rect, for below unittest, it will fail.

RectClip is an INTERSECTION operation so the solution will only be those regions where subject and clip rectangle overlap. So in this case, the width of a rectangle that bounds the solution would be considerably smaller than the width of the clip rect itself.

[AngusJohnson]

void Test()
{
  Paths64 sub, clp, sol;
  Rect64 rect;
  sub.push_back(MakePath({ 559306,72464, 559090,72464, 559090,72454, 558178,72454, 558178,72464,
   557962,72464, 557962,72284, 558534,72284, 558534,72274, 558734,72274,
   558734,72284, 559306,72284 }));
  sub.push_back(MakePath({ 557306,72464, 557090,72464, 557090,72454, 556178,72454, 556178,72464,
   555962,72464, 555962,72284, 556534,72284, 556534,72274, 556734,72274,
   556734,72284, 557306,72284 }));

  rect = Rect64(551604, 72454, 560834, 72459);
  sol = ExecuteRectClip(rect, sub, false);
  std::cout << sol << std::endl;

  clp.push_back(rect.AsPath());
  SvgWriter svg;
  SvgAddSubject(svg, sub, FillRule::NonZero);
  SvgAddClip(svg, clp, FillRule::NonZero);
  SvgAddSolution(svg, sol, FillRule::NonZero, false);
  SvgSaveToFile(svg, "c:\\temp\\tmp.svg", 600,600);
  System("c:\\temp\\tmp.svg");
}

Looks fine to me.

558178,72454 , 558178,72459 , 557962,72459 , 557962,72454
559306,72454 , 559306,72459 , 559090,72459 , 559090,72454
556178,72454 , 556178,72459 , 555962,72459 , 555962,72454
557306,72454 , 557306,72459 , 557090,72459 , 557090,72454

[gigglesun]

@AngusJohnson the red clip rect is long and narrow and it should not appear in the solution. the solution's bounding box should have similar width and height as the rect, for below unittest, it will fail.

    Paths64 sub, sol;
     Rect64 rect;

     sub.push_back(MakePath({559306,72464, 559090,72464, 559090,72454, 558178,72454, 558178,72464,
      557962,72464, 557962,72284, 558534,72284, 558534,72274, 558734,72274,
      558734,72284, 559306,72284}));

     sub.push_back(MakePath({ 557306,72464, 557090,72464, 557090,72454, 556178,72454, 556178,72464,
      555962,72464, 555962,72284, 556534,72284, 556534,72274, 556734,72274,
      556734,72284, 557306,72284 }));

     rect = Rect64(551604, 72454, 560834, 72459);
     sol = ExecuteRectClip(rect, sub, false);

    const auto sol_bounds = GetBounds(sol);
    EXPECT_EQ(sol_bounds.Width(), rect.Width());
    EXPECT_EQ(sol_bounds.Height(), rect.Height());