protected override Result RunCommand(RhinoDoc doc, RunMode mode)
{
// mimic the functionality of the contour command using a background threads
// The tricky parts to the contour command are that it dynamically adds
// sections as they are found
const ObjectType filter = ObjectType.Brep | ObjectType.Extrusion | ObjectType.Mesh;
ObjRef[] objrefs;
var rc = RhinoGet.GetMultipleObjects("Select objects for contours", false, filter, out objrefs);
if (rc != Result.Success)
{
return(rc);
}
if (objrefs == null || objrefs.Length < 1)
{
return(Result.Failure);
}
Point3d base_point;
rc = RhinoGet.GetPoint("Contour plane base point", false, out base_point);
if (rc != Result.Success)
{
return(rc);
}
var gp = new Rhino.Input.Custom.GetPoint();
gp.SetCommandPrompt("Direction perpendicular to contour planes");
gp.DrawLineFromPoint(base_point, false);
gp.Get();
if (gp.CommandResult() != Result.Success)
{
return(gp.CommandResult());
}
Point3d end_point = gp.Point();
double interval = 1;
rc = RhinoGet.GetNumber("Distance between contours", true, ref interval, 0.001, 10000);
if (rc != Result.Success)
{
return(rc);
}
// figure out the combined bounding box of all the selected geometry
BoundingBox bounds = BoundingBox.Unset;
var geometries = new List <GeometryBase>();
foreach (var objref in objrefs)
{
var geometry = objref.Geometry();
var extrusion = geometry as Extrusion;
if (extrusion != null)
{
geometry = objref.Brep();
}
geometries.Add(geometry);
var bbox = geometry.GetBoundingBox(false);
bounds.Union(bbox);
}
Vector3d normal = end_point - base_point;
normal.Unitize();
var curplane = new Plane(base_point, normal);
double min_t, max_t;
if (!curplane.DistanceTo(bounds, out min_t, out max_t))
{
return(Result.Failure);
}
min_t -= interval;
max_t += interval;
min_t = Math.Floor(min_t / interval);
max_t = Math.Ceiling(max_t / interval);
double tolerance = doc.ModelAbsoluteTolerance;
var tasks = new List <Task <Curve[]> >();
var gc = new Rhino.Input.Custom.GetCancel();
for (double t = min_t; t <= max_t; t += 1.0)
{
double offset = t * interval;
var point = base_point + normal * offset;
var plane = new Plane(point, normal);
foreach (var geom in geometries)
{
var geom1 = geom;
var task = Task.Run(() => Section(plane, geom1, tolerance), gc.Token);
tasks.Add(task);
}
}
gc.TaskCompleted += OnTaskCompleted;
rc = gc.WaitAll(tasks, doc);
return(rc);
}
protected override Result RunCommand(RhinoDoc doc, RunMode mode)
{
const ObjectType filter = ObjectType.Brep | ObjectType.Extrusion | ObjectType.Mesh;
var rc = RhinoGet.GetMultipleObjects("Select objects to contour", false, filter, out var objrefs);
if (rc != Result.Success)
{
return(rc);
}
if (objrefs == null || objrefs.Length < 1)
{
return(Result.Failure);
}
rc = RhinoGet.GetPoint("Contour plane base point", false, out var base_point);
if (rc != Result.Success)
{
return(rc);
}
var gp = new Rhino.Input.Custom.GetPoint();
gp.SetCommandPrompt("Direction perpendicular to contour planes");
gp.DrawLineFromPoint(base_point, false);
gp.Get();
if (gp.CommandResult() != Result.Success)
{
return(gp.CommandResult());
}
var end_point = gp.Point();
var interval = 1.0;
rc = RhinoGet.GetNumber("Distance between contours", true, ref interval, 0.001, 10000);
if (rc != Result.Success)
{
return(rc);
}
var bounds = BoundingBox.Unset;
var geometries = new List <GeometryBase>();
foreach (var objref in objrefs)
{
var geometry = objref.Geometry();
if (geometry is Extrusion)
{
geometry = objref.Brep();
}
geometries.Add(geometry);
var bbox = geometry.GetBoundingBox(false);
bounds.Union(bbox);
}
var normal = end_point - base_point;
normal.Unitize();
var curplane = new Plane(base_point, normal);
if (!curplane.DistanceTo(bounds, out var min_t, out var max_t))
{
return(Result.Failure);
}
min_t -= interval;
max_t += interval;
min_t = Math.Floor(min_t / interval);
max_t = Math.Ceiling(max_t / interval);
var tolerance = doc.ModelAbsoluteTolerance;
var tasks = new List <Task <Curve[]> >();
var gc = new Rhino.Input.Custom.GetCancel();
for (var t = min_t; t <= max_t; t += 1.0)
{
var offset = t * interval;
var point = base_point + normal * offset;
var plane = new Plane(point, normal);
foreach (var geom in geometries)
{
var geom1 = geom;
var task = Task.Run(() => Section(plane, geom1, tolerance), gc.Token);
tasks.Add(task);
}
}
gc.TaskCompleted += OnTaskCompleted;
rc = gc.WaitAll(tasks, doc);
return(rc);
}