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Offset functionality:
- Allows to add an offset to a selected set of shapes (surfaces or
volumes), this provides a security margin around these shapes
- Enables to define the orientation in which the offset is applied.
This orientation can be changed manually or automatically to correct the
possible lack of uniformity between the orientation vectors of the
different surfaces.For more detailed information, refer to
More About Offset along Normal Vectors.
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This task will show you how to generate offsets
on a surface or volume using the offset functionality. |
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Insert SCENARIO01.model from the
samples folder. |
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Use the Fit All In icon
to position the model geometry on the screen. |
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(Optional)
You can manage automatically your Offset result
as alternate shape of the initial component. In this case, the offset
result will be automatically reinserted and will replace the initial
component (provided the Activate check box is selected, it is by
default)Note: If your are not working in
alternate shape mode, it is strongly recommended to use the Reference
Product option to avoid positioning problems when reinserting
products. Please read About
Reference Product |
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Click the Offset icon
in the DMU Optimizer toolbar.
The Offset dialog box is displayed.
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Select the solid or surface you want to work on (i.e.
SCENARIO0. model) either in the specification tree or in the
geometry area.
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The result can be surface or a solid. The type of the offset
result will be the same. |
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Enter the Offset value, 2mm for instance.
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Click the More button:
The Input Products dialog box is displayed
The listed selection corresponds to the those products you selected
before you launched a calculation |
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You can select the Preview check box to see a preview
of you product selection |
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Click Preview to generate the offset
representation.
The Preview window is displayed:
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Zoom to visualize better the offset result.
If you are not satisfied with the result (because
of gaps between surface patches or bad offset orientation)
You may use the Orientation constraints option |
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Orientation Constraints
- The Orientation constraints option is disabled by default. (The
default normal vectors are used)
- Using this functionality, you can define the orientation of the
offset (on every surface patch).
- If you select the
Orientation constraints check box (without defining
additional vectors): the normal vector orientation is calculated
automatically. The first normal vector found defines the
reference orientation which is propagated to the neighboring
surfaces.
- If the automatic propagation is still incomplete (for
example, some surfaces are not correctly connected), you
need to define manually
normal vectors.
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Select the
Orientation constraints check box in the dialog box still
displayed:
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Click Apply.
The Propagation is not complete. The surfaces concerned are
highlighted. |
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Select the Orientation constraints check box
again to define constraints on the initial representation.
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Define constraint
vectors for the corresponding surfaces in the document window:
- Drag the cursor onto the surface.
- When you are satisfied, click the left-hand mouse button.
The constraint vector is created.
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At anytime, you can delete a constraint vector, what you need to
do is to click on the white square
Note that if you click the arrow, you reverse the constraint vector
orientation. |
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Click Apply when done. The calculation is
based on the orientation of the constraint vectors.
This time, the result is correct (there is no longer highlighted
surfaces):
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Click OK.
The Save As dialog box is displayed:
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Enter a meaningful name and save in .cgr format.
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Click Save
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Alternate Shape:
(Optional)
You can manage automatically your Offset result as alternate shape of the
initial component.
For this:
- Select Tools->Options from the menu bar.
The Options dialog box is displayed
- Expand the Digital Mockup category from the upper-left tree.
- Select DMU Optimizer item to display the corresponding tab.
The Alternate Shapes Management is available
- Select the Offset check box: the offset is automatically
treated as an alternate shape
The Offset result will be added to the initial component as a new
representation (it will replace the original component). For more
details, please refer to Customizing DMU Optimizer Settings and
Managing as an Alternate Shape.
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Remember you can customize offset settings at
any time. |
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