Beispiel #1
0
        ///<summary> This gets called when when the user runs this command.</summary>
        public override IRhinoCommand.result RunCommand(IRhinoCommandContext context)
        {
            // Step 1, select objects to include in the instance definition
            MRhinoGetObject go = new MRhinoGetObject();

            go.SetCommandPrompt("Select objects to define block");
            go.EnableReferenceObjectSelect(false);
            go.EnableSubObjectSelect(false);
            go.EnableGroupSelect(true);
            // Phantoms, grips, lights, etc., cannot be in instance definitions.
            uint forbidden_geometry_filter = (uint)(IRhinoGetObject.GEOMETRY_TYPE_FILTER.light_object |
                                                    IRhinoGetObject.GEOMETRY_TYPE_FILTER.grip_object |
                                                    IRhinoGetObject.GEOMETRY_TYPE_FILTER.phantom_object
                                                    );
            uint geometry_filter = forbidden_geometry_filter ^ (uint)IRhinoGetObject.GEOMETRY_TYPE_FILTER.any_object;

            go.SetGeometryFilter(geometry_filter);
            go.GetObjects(1, 0);
            if (go.CommandResult() != IRhinoCommand.result.success)
            {
                return(go.CommandResult());
            }

            // Step 2, select base point
            MRhinoGetPoint gp = new MRhinoGetPoint();

            gp.SetCommandPrompt("Block base point");
            gp.GetPoint();
            if (gp.CommandResult() != IRhinoCommand.result.success)
            {
                return(gp.CommandResult());
            }

            On3dPoint base_point = gp.Point();

            // Step 3, get instance definition name
            MRhinoGetString gs = new MRhinoGetString();

            gs.SetCommandPrompt("Block definition name");
            gs.SetDefaultString(GetUnusedInstanceDefinitionName(context.m_doc));
            gs.GetString();
            if (gs.CommandResult() != IRhinoCommand.result.success)
            {
                return(gs.CommandResult());
            }

            string idef_name = gs.String().Trim();

            if (string.IsNullOrEmpty(idef_name))
            {
                return(IRhinoCommand.result.nothing);
            }

            // Step 4, verify objects
            int found_index             = context.m_doc.m_instance_definition_table.FindInstanceDefinition(idef_name);
            List <IRhinoObject> objects = new List <IRhinoObject>();

            bool bQuietly = context.IsInteractive() ? false : true;

            for (int i = 0; i < go.ObjectCount(); i++)
            {
                IRhinoObject obj = go.Object(i).Object();
                if (obj == null)
                {
                    continue;
                }

                // Probably don't need to do this...
                if (0 != (forbidden_geometry_filter & (uint)obj.ObjectType()))
                {
                    continue;
                }

                if (obj.ObjectType() == IOn.object_type.instance_reference)
                {
                    IRhinoInstanceObject iref_obj = MRhinoInstanceObject.ConstCast(obj);
                    if (iref_obj != null)
                    {
                        if (found_index >= 0 && iref_obj.UsesDefinition(found_index) > 0)
                        {
                            if (!bQuietly)
                            {
                                RhUtil.RhinoApp().Print("Unable to create block.\n");
                            }
                            return(IRhinoCommand.result.failure);
                        }
                    }
                }
                objects.Add(obj);
            }

            // Step 5, create instance definition
            OnInstanceDefinition idef = new OnInstanceDefinition();

            idef.SetName(idef_name);

            int idef_index = CreateInstanceDefinition(context.m_doc, idef, base_point, objects, bQuietly);

            if (idef_index < 0)
            {
                return(IRhinoCommand.result.failure);
            }

            // Step 6, create the instance reference
            OnXform xform = new OnXform();

            xform.Translation(base_point - new On3dPoint(OnUtil.On_origin));
            IRhinoInstanceObject inst_obj = context.m_doc.m_instance_definition_table.CreateInstanceObject(idef_index, xform);

            if (inst_obj != null)
            {
                inst_obj.Select(true);
            }
            else
            {
                if (!bQuietly)
                {
                    RhUtil.RhinoApp().Print("Error creating block.\n");
                }
                return(IRhinoCommand.result.failure);
            }

            // Step 7, delete existing geometry
            for (int i = 0; i < objects.Count; i++)
            {
                context.m_doc.DeleteObject(new MRhinoObjRef(objects[i]));
            }

            context.m_doc.Redraw();

            return(IRhinoCommand.result.success);
        }