Introduction to basic modeling techniques¶
This section will introduce basic techniques that come in handy while configuring a ReconCell in VEROSIM, which comprises selecting, adding and moving objects/3D geometries.
All selections happen graphically. You can either select something by clicking it in the Explorer widget, or by clicking in the Render Window. The selection mode for the latter case needs to be activated in the
Selection Mode toolbar, though. Selections inside the explorer widgets are possible at all times.
As soon as something is selected it will be highlighted in the Explorer widget and in the Render Window. This is the indicator for you to know that you can edit properties of the selected object (in the Properties widget). Selection changes as soon as you click another object and multiple selections are also possible by holding the
Ctrl key while clicking.
To deselect something you need to use the keyboard shortcut
Disabling the selection visualization¶
Sometimes it is not desirable to see the selection in the render window. This feature is a project specific setting that you can change by navigating to the menu bar
File -> Project properties.... A new dialog window will open up. Select
Selection and deactivate the
Mark selection checkbox. Here, you can also make more subtle changes, like disabling or changing the color of the bounding box, or changing the style of the coordinate system.
Adding primitive geometries¶
Adding boxes and other primitive geometries in VEROSIM is an easy task. Geometry can be placed in the database below 3D Nodes. This is a constraint that is necessary because geometry needs a position and an orientation, otherwise you could not locate it in threedimensional space. In your open project select any
childNodes reference list and open the context menu. Add a
VSD3D::Node by clicking
New -> 3D node.
If you already have a 3D Node or you have just created one and you now want to add a primitive, you will need to open the context menu on that 3D Node’s
childNodes reference list. Afterwards, go to
New and select the geometry you want to add (e.g. a
Hull node (Box)).
Importing objects from CAD¶
Importing from CAD files is handled by simple drag and drop operations. Select a CAD file (STL, STEP, 3ds, …) in the file manager of your choice. Use your mouse to drag it into the VEROSIM window and drop it. The model data will be imported and converted into VEROSIM datatypes. Afterwards, handle the imported object in the same way as you would handle manually added geometries.
Three-dimensional objects can be moved and reoriented in a graphical fashion. If an object that can be modified in such a way is selected, the
Properties widget will contain the
Modify frame widget. By unfolding that widget you will have the graphical means at hand to modify an objects pose. The
Base system selects the coordinate system the modification is relative to, while the
Rotation perform the actual modification action. You can also change the increment by which a value in the spin boxes will be changed. Axes are color-coded so that you can identify along which axis an action is performed: Red - x-Axis; Green - y-Axis; Blue - z-Axis
In addition to the widget, you will find three-dimensional handles in the render window that allow you the same modifications, with the exception that you can perform them directly in three-dimensional space in the render window. These handles belong to a coordinate system that we call
Gizmo. Move your mouse to the render window and drag the handles around. You will notice that the movements you can actually perform are constrained to either single axis or planes. Modifications with the Gizmo will of course also be visible in the Modify frame widget.