Example #1
0
    private static PolySet Inset(ICollection <Polygon> polygons, IList <Vector3> vertices, PolySet polys, float insetDistance)
    {
        PolySet stitchedPolys = StitchPolys(polygons, vertices, polys, out EdgeSet stitchedEdge);

        Dictionary <int, Vector3> inwardDirections = EdgeSet.GetInwardDirections(stitchedEdge, vertices);

        // Push each vertex inwards, then correct
        // it's height so that it's as far from the center of
        // the planet as it was before.

        foreach (KeyValuePair <int, Vector3> kvp in inwardDirections)
        {
            int     vertIndex       = kvp.Key;
            Vector3 inwardDirection = kvp.Value;

            Vector3 vertex         = vertices[vertIndex];
            float   originalHeight = vertex.magnitude;

            vertex += inwardDirection * insetDistance;
            vertex  = vertex.normalized * originalHeight;
            vertices[vertIndex] = vertex;
        }

        return(stitchedPolys);
    }