OCC (Open CasCade) 3D viewer has been developed on the basis of Open CASCADE Technology. This is the default viewer for Geometry Module, providing good representation of construction and transformation of geometrical objects. Only this viewer allows to work with groups and sub-shapes. This viewer can also work in Mesh module, however, it doesn't allow to visualize meshes.
The functions of OCC viewer are available via its Viewer Toolbar. Buttons marked with small downward triangles have extended functionality which can be accessed by locking on them with left mouse button.
Dump
View - exports an object from the viewer in bmp, png, jpg or jpeg
image format.
Show/Hide
Trihedron - shows or hides coordinate axes.
Fit all - allows
to select a point to be the center of a scene representing all displayed
objects in the visible area.
Fit area - resizes
the view to place in the visible area only the contents of a frame drawn
with pressed left mouse button.
Zoom
- allows
to zoom in and out.
Panning
- if the represented objects are greater that the visible area and you
don't wish to use Fit all functionality,
click on this button and you'll be able to drag the scene to see its remote
parts.
Global
panning - represents all displayed objects in the visible area.
Change rotation point
- allows to to choose the point around which the rotation is performed
By default the rotation point is located in the Center of the bounding box of an object.
Unchecking Use Bounding Box Center box allows you to define the coordinates of the rotation point manually.
Set to Origin button restores the default rotation point coordinates.
Select Point from View button allows to select the rotation point in the 3D Viewer
Rotation
- allows to rotate the selected object using the mouse.
These buttons orientate the scene
strictly about coordinate axes.
Reset
- restores the default position (isometric) of objects in the scene.
Memorise
view - saves the current position of objects in the scene
Restore
view - restores the saved
position of objects in the scene
Clone
view - opens a new duplicate scene.
Clipping
- allows to create cross-section views (clipping planes) of geometrical
objects.
Base point - allows to define the coordinates of the base point for the clipping plane. Click
Reset - returns the base point to coordinate origin.
Direction - allows to define the orientation of the clipping plane.
Invert - allows to select which part of the object will be removed and which will remain after clipping.
Preview - allows to see the results of clipping in the viewer.