/// <summary>
/// Construct a solid by sweeping a face in a direction.
/// </summary>
/// <param name="perimeter">The perimeter of the face to sweep.</param>
/// <param name="holes">The holes of the face to sweep.</param>
/// <param name="direction">The direction in which to sweep.</param>
/// <param name="distance">The distance to sweep.</param>
/// <param name="bothSides">Should the sweep start offset by direction distance/2? </param>
/// <returns>A solid.</returns>
public static Solid SweepFace(Polygon perimeter, Polygon[] holes, Vector3 direction, double distance, bool bothSides = false)
{
// We do a difference of the polygons
// to get the clipped shape. This will fail in interesting
// ways if the clip creates two islands.
if (holes != null)
{
var newPerimeter = perimeter.Difference(holes);
perimeter = newPerimeter[0];
holes = newPerimeter.Skip(1).Take(newPerimeter.Count - 1).ToArray();
}
var solid = new Solid();
Face fStart = null;
if (bothSides)
{
var t = new Transform(direction.Negated() * (distance / 2));
if (holes != null)
{
fStart = solid.AddFace(t.OfPolygon(perimeter.Reversed()), t.OfPolygons(holes.Reversed()));
}
else
{
fStart = solid.AddFace(t.OfPolygon(perimeter.Reversed()));
}
}
else
{
if (holes != null)
{
fStart = solid.AddFace(perimeter.Reversed(), holes.Reversed());
}
else
{
fStart = solid.AddFace(perimeter.Reversed());
}
}
var fEndOuter = solid.SweepLoop(fStart.Outer, direction, distance);
if (holes != null)
{
var fEndInner = new Loop[holes.Length];
for (var i = 0; i < holes.Length; i++)
{
fEndInner[i] = solid.SweepLoop(fStart.Inner[i], direction, distance);
}
solid.AddFace(fEndOuter, fEndInner);
}
else
{
solid.AddFace(fEndOuter);
}
return(solid);
}
/// <summary>
/// Construct a solid by sweeping a face in a direction.
/// </summary>
/// <param name="outerLoop">The perimeter of the face to sweep.</param>
/// <param name="innerLoops">The holes of the face to sweep.</param>
/// <param name="direction">The direction in which to sweep.</param>
/// <param name="distance">The distance to sweep.</param>
/// <param name="bothSides">Should the sweep start offset by direction distance/2? </param>
/// <param name="material">The solid's material.</param>
/// <returns>A solid.</returns>
public static Solid SweepFace(Polygon outerLoop, Polygon[] innerLoops, Vector3 direction, double distance, Material material = null, bool bothSides = false)
{
var solid = new Solid(material);
Face fStart = null;
if (bothSides)
{
var t = new Transform(direction.Negated() * (distance / 2));
if (innerLoops != null)
{
fStart = solid.AddFace(t.OfPolygon(outerLoop.Reversed()), t.OfPolygons(innerLoops.Reversed()));
}
else
{
fStart = solid.AddFace(t.OfPolygon(outerLoop.Reversed()));
}
}
else
{
if (innerLoops != null)
{
fStart = solid.AddFace(outerLoop.Reversed(), innerLoops.Reversed());
}
else
{
fStart = solid.AddFace(outerLoop.Reversed());
}
}
var fEndOuter = solid.SweepLoop(fStart.Outer, direction, distance);
if (innerLoops != null)
{
var fEndInner = new Loop[innerLoops.Length];
for (var i = 0; i < innerLoops.Length; i++)
{
fEndInner[i] = solid.SweepLoop(fStart.Inner[i], direction, distance);
}
solid.AddFace(fEndOuter, fEndInner);
}
else
{
solid.AddFace(fEndOuter);
}
return(solid);
}
/// <summary>
/// Construct a solid by sweeping a face in a direction.
/// </summary>
/// <param name="perimeter">The perimeter of the face to sweep.</param>
/// <param name="holes">The holes of the face to sweep.</param>
/// <param name="direction">The direction in which to sweep.</param>
/// <param name="distance">The distance to sweep.</param>
/// <param name="bothSides">Should the sweep start offset by direction distance/2? </param>
/// <param name="rotation">An optional rotation in degrees of the perimeter around the direction vector.</param>
/// <returns>A solid.</returns>
public static Solid SweepFace(Polygon perimeter,
IList <Polygon> holes,
Vector3 direction,
double distance,
bool bothSides = false,
double rotation = 0.0)
{
// We do a difference of the polygons
// to get the clipped shape. This will fail in interesting
// ways if the clip creates two islands.
// if(holes != null)
// {
// var newPerimeter = perimeter.Difference(holes);
// perimeter = newPerimeter[0];
// holes = newPerimeter.Skip(1).Take(newPerimeter.Count - 1).ToArray();
// }
var solid = new Solid();
Face fStart = null;
if (bothSides)
{
var t = new Transform(direction.Negate() * (distance / 2), rotation);
if (holes != null)
{
fStart = solid.AddFace(perimeter, holes, transform: t, reverse: true);
}
else
{
fStart = solid.AddFace(perimeter, transform: t, reverse: true);
}
}
else
{
if (holes != null)
{
fStart = solid.AddFace(perimeter, holes, reverse: true);
}
else
{
fStart = solid.AddFace(perimeter, reverse: true);
}
}
var fEndOuter = solid.SweepLoop(fStart.Outer, direction, distance);
if (holes != null)
{
var fEndInner = new Loop[holes.Count];
for (var i = 0; i < holes.Count; i++)
{
fEndInner[i] = solid.SweepLoop(fStart.Inner[i], direction, distance);
}
solid.AddFace(fEndOuter, fEndInner);
}
else
{
solid.AddFace(fEndOuter);
}
return(solid);
}