|
Phantoms |
Scroll |
Phantom – an image that is temporarily displayed on the screen while running an operation and showing the current status of the created or edited objects. For example, if a straight line segment is created, then while awaiting input of its second point a phantom of future segment is displayed. On change of the cursor position, the phantom is dynamically rearranged, showing a new state of the segment being input.
Phantoms are also used to show various options of object design under the same basic data. For example, it is possible to draw two tangents to a circle through the same point. In this case, one of the phantoms is active – the created object will confirm just to it, while the other phantoms are non-active. Prior to creation of an object, the user can activate any of the phantoms. By default, the active phantom is displayed with a solid line, and non-active – with dots.
Setting up the appearance of phantoms displayed on the screen implies a setup of drawing the lines showing the shape and position of objects being created or edited prior to their fixing. This setting is performed in the Draw Phantom Linesdialog fetched with the Settings — Parameters... — System — Graphic Editor — Phantoms command.
Controls of the dialog for setting up the display of phantoms
The element |
Description of setting |
|
Active |
The option allows to enable setup of the parameters of an active phantom. |
|
Passive |
The option allows to enable the setting of parameters of a non-active phantom. |
|
Style of the active/non-active phantom |
The group of elements allows to select line styles for drawing a phantom (active or non-active). The following options are available: •Solid, •Dots, •Dashed, •By Object – the phantom’s line style coincides with the draw style of the object being imitated. On selection of the By Object option, the setting of thickness and line colors is impossible. |
|
Thickness |
The field allows to select line thickness (in pixels) for the phantom image on the screen. To make the line thickness match the draw thickness for an object being imitated, enable the By Object option. |
|
Color |
The button allows to select the color of phantom lines. Fetches a standard color selection dialog. To make the color for drawing phantom lines match the color of the object being imitated, enable the By Object option. |
The appearance of lines of active and non-active phantoms is shown in the respective preview windows, which allows to estimate the changes made.
Having completed setup of the phantoms, click OK. Click Cancel to discard all changes and close the dialog box.
