public static void Write(string path, Octree octree)
{
Console.WriteLine("Building faces");
var verts = BuildFaces(octree);
verts = verts.Select(x => x * 100).ToList();
Console.Error.WriteLine($"Writing {verts.Count} vertices");
using var sw = new StreamWriter(path, false);
sw.WriteLine("solid marched");
for (var i = 0; i < verts.Count; i += 3)
{
var a = verts[i];
var b = verts[i + 1];
var c = verts[i + 2];
sw.WriteLine("facet normal 0 0 0");
sw.WriteLine("outer loop");
sw.WriteLine($"vertex {a.X} {a.Y} {a.Z}");
sw.WriteLine($"vertex {b.X} {b.Y} {b.Z}");
sw.WriteLine($"vertex {c.X} {c.Y} {c.Z}");
sw.WriteLine("endloop");
sw.WriteLine("endfacet");
}
sw.WriteLine("endsolid marched");
}
static List <Vec3> BuildFaces(Octree octree) =>
octree.RootPath.Leaves.Select(leaf => {