Common Functionality
Editor : Graphical Component Modification (GCM) : Movement and Rotation Characteristics
Movement and Rotation Characteristics
Movement Handle
You can reposition the selected Components freely along the route of the pipe Branch into any segment where the Components can fit. All selection and handle movements can be undone and redone using Undo/Redo.
The following rules are for where the selected Components can be positioned within a route:
1.
There must be enough implied tube for the selected Components to be positioned in.
Where there is tube adjacent to the selected Components, then the length of the selected Components and the adjacent tube is taken to be a continuous segment.
2.
The tube between two adjacent Components must parallel to the Arrive and Leave directions of the adjacent Components.
As the repositioning of Components does not reselect the adjacent Components or elements, this allows for the instances where the selected Components are included into a segment of pipe which has a different bore, but which still allows the Components to be moved.
By default where there are no obstructions or changes of directions within a line, the Components being moved will move using the currently defined linear increments.
When an extremity of the selection of Components is coincident with or passes the approach side of an obstruction or change in direction (i.e. a Bend or Elbow), the leading extremity of the selection snaps to the approach of the obstruction.
Where a selection is snapped to a Component, feedback is given to inform you that this has taken place.
Where the selection has snapped to an obstruction or change in direction, the movement will stop until the pointer passes over a valid segment of tube, at which point the selection moves to the new segment of pipe, or until the pointer movement implies that you want to drag the selection past the obstruction or change in direction.
The selection will only move past the obstruction or change in direction, where there is sufficient tube to move the Components and when the mapped position of the pointer is at least the distance from the origin of the handle to the opposite extremity of the selection.
Note:
in this case the position of the pointer mapped onto the centreline of the tube is the position of the origin of the handle. When the selection is first dragged, the mapped position of the pointer is with respect to the handle.
Where the selection is moved past the obstruction or change in direction by identifying a segment of tube, the selection will be moved so that the handle is at the mapped position of the pointer.
If the distance between the pointer and the handle is less than the distance from the handle to the extremity of the selection, the selection is snapped to the exit of the obstruction or change in direction passed. The pointer retains its relative offset from the handle position.
Where a selection’s movement is impeded by a change in direction, the selection only moves around the bend when the pointer crosses the tube of the next leg, as illustrated or where the pointer movement is changed so that it follows the next leg of the pipe.
Pointer movement parallel to the leg the selection is in does not move the selection around a change in direction.
Offsetting the Selection
You can offset the Component selection set along the segment of Pipe it is currently in. You access the offset options from the popup menu available on the handle, refer to Popup Menus on the Component Modification Handle.
Each option presents a window which allows you to enter a positive or negative value. You can also ‘preview’ the specified move before committing the change.
The side of the movement handle at which the pop-up is displayed determines the effect of a positive or negative offset:
Offsetting is not allowed where it moves either extremity of the selected Components out of the current segment of pipe. An appropriate error message is displayed:
Feature Highlighting
Feature highlighting allows you to position the handle using other elements within the model. Feature highlighting is accessed using popup menus or hotkeys, refer to Popup Menus on the Component Modification Handle and Hotkeys.
Positions to be snapped to are derived by the intersection of the constrained direction of movement and planes acting through the identified features. When Feature Highlighting is active, the movement of the selected Components is constrained to be in the leg the selection.
The behaviour of Feature Highlighting in GCM is identical to Feature Highlighting in Quick Pipe Routing.
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