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What is a Border, Bounds, Perimeter?

A Border, a Bounds, a Perimeter, all refer to the same thing.

The Border is one continuous closed edgeloop, a closed curcuit of edges.

If your selection contains several borders, the outermost or widest border should be found.

What is Not a Border?

• A Border should not have gaps.
• A Border should not cross itself.
• A Border should not have multiple loops.
• A Border should not have edge antennaes sticking out.

Understanding Borders

The Border is a fundamental concept in Landshape. Several key commands depend on a well-defined border as input.

This includes commands such as Fit and Grade.

If you are unsure of whether you have a valid border in your selection, use Inspect Border as an aid.

Use the Inspect command to verify whether your selection in fact has a well-formed border, or not.

What Inspect Highlights Mean

• A Magenta-colored path shows the border path that Landshape finds.
• If the path is continuous and closed, Landshape has found a Border.
• If the path is open or discontinuous, Landshape only found a partial Border.
• A green dot shows where Landshape starts its Border search.
• A red cross shows where Landshape fails to proceed its Border search.

Fixing A Broken Border

• Use the highlights from the Inspect Border command to guide your editing.
• Enter your geometry group, and manually add the edgepaths that are missing, or manually remove the edgepaths are hindering the Border search.
• You can use e.g. the Landshape Draw tool or the Sketchup Line tool, to draw what may be missing.
• Run Inspect again to verify that you have a closed Border in the correct place.