Those are the selection modes.
Pick applies to a cloud of points or a mesh.
mode, pick elements to select them. They are highlighted in red. Click
OK to validate your selection.
Before picking the elements, choose the type of elements you want to
Point, Triangle, Scan/Grid, Cell (sub-element of a cloud), Cloud (global
||If you pick elements while maintaining the shift key pressed, you remove
them from the selection.
Trap applies to a cloud of points or a mesh.
default, the trap is displayed in the view plane. It is thus a 2D trap.
You can rotate the model to display it as a 3D trap.
You can modify the shape or the size of the trap using the green arrows
that appear on the edges of the trap.
First, select the type of trap you want to use:
- Rectangular: drag the mouse over the portion you want
A rectangle is displayed and the points or the triangles selected are
displayed in red.
- Polygonal: draw a polygonal trap by picking the cloud
of points or the mesh.
Double-click to close the polygonal trap. The points or
triangles inside the trap are highlighted in red.
Now you can choose to activate the points that are inside (select
Inside Trap) or outside of the trap (select Outside Trap).
- Spline: draw a spline line by picking the cloud of
points or the mesh.
Double-click to close the trap formed by the line. The points
or triangles inside the trap are highlighted in red.
To validate a selection by trap, use the Validate Trap button and the
- To create a single activation area by trap, draw the trap, modify
it when necessary and
click OK to confirm the activation and close the dialog
- To create several activation areas by traps, draw the first trap,
modify it when necessary,
click Validate Trap to validate this trap.
Repeat these steps for each trap then click OK to confirm
the activation and close the dialog box.
You can create as many areas as you wish by clicking
Validate Trap and drawing another
- As long as you have not double-clicked to end a
polygonal or a spline trap, you can undo/redo each pick of the trap.
||In the Activate action:
- The Trap option displays only triangles that are fully
selected (i.e. the whole triangle is inside the selection trap).
If the selection trap intersects the triangle, it is not displayed.
- As a consequence, when you push the button Swap, the
triangles displayed are not the exact complement
of the previous selection.
In the Remove action:
- The Remove action takes into account triangles that are at
least partially selected (at least one vertex has been picked,
or the selection trap intersects the triangle).
A contextual menu is available in order to edit and modify the radius of
A circle is displayed in the screen plane.
The size of the brush is a screen size i.e. if you zoom in, the size of the
brush is not modified.
Drag the circle over the portion you want to select.
The visible triangles that have at least one vertex within the circle are
selected and highlighted in red.
||If you drag the circle while maintaining the shift key pressed, you
remove triangles from the selection.
In the Activate action:
You can select an activated portion of a cloud
of points or a mesh and recall the activation action to:
Activate all (the whole cloud of
points or mesh is re-activated),
In the Remove action:
- Activate all and Swap apply only to the current
They can not be used to recall removed elements once you have validated