<< Click to Display Table of Contents >  SAMLight Manual > User Interface > View 2D > Operations Operations

Creation of objects: To create objects in the View2D use the Object Toolbar.

Selection: Before doing a selection operation switch to the select mode (use the Object Toolbar, button ), unless you want to do a point editing operation (see Entity List → Point Editor).

First way: Selection via the Entity List: Select an entity, i.e. an object or a group of objects, by clicking on it in the Entity List. This will show a modify box for the selection, like it is shown for the triangle in the screenshot. To select more than one entity hold down Ctrl and select the entities by clicking on them in the Entity List.

Second way: Selection via the View2D by mouse interaction: To select one or more objects draw a bounding box that covers all objects to select. To draw this bounding box click the left mouse button at the chosen position of the left upper corner and move the mouse while keeping the left mouse button pressed to the chosen position of the right lower corner of the bounding box. Then release the left mouse button. This will show a modify box that contains all the objects in the bounding box.

Third way: Selection via the View2D by mouse clicks: To select only one object click on it in the View2D. To select more than one object, hold down Ctrl  and select the entities by clicking on them it in the View2D.

Manipulation of objects: Before an object can be modified it must have been selected. To do this follow the instructions described above (Selection). The modify box, shown after the selection, provides three operation modes for transformations which can be switched through by the button.

Translation mode: In this mode the corners of the modify box show the symbol . To translate the selected object click on this symbol, keep the left mouse button pressed and drag the mouse to the new position.

Scaling mode: In this mode the corners of the modify box show the symbol and the edges show the symbol . To scale the object in x and y direction simultaneously click on a corner symbol, keep the left mouse button pressed and drag the mouse. To scale only in x or y direction click on an edge symbol and do the same.

Rotating and slanting mode: In this mode the corners of the modify box show the symbol and the edges show the symbol . To rotate the object around the rotation centre click on a corner symbol, keep the left mouse button pressed and drag the mouse. To slant the object click on an edge symbol and do the same.

The manipulations described above are not object specific. To modify object specific properties use the Entity Property Sheet.

View2D Settings: To modify the settings of the View2D use the dialog Menu bar → Settings → View.

Context Menu: When right click somewhere in the View2D the context menu appears: