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This task shows how to create an element of
extremum radius or angle, on a planar contour. |
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Open the
Extremum2.CATPart document. |
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Click Polar Extremum
 .
| The Polar Extremum Definition dialog box appears. |
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Select the contour, that is a connex planar sketch or
curve on which the extremum element is to be created.
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Non connex elements, such as the
letter A in the sample, are not allowed. |
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Select the supporting surface of the contour.
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Specify the axis origin and a reference direction, in
order to determine the axis system in which the extremum element is to be
created.
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Click Preview.
| Depending on the selected computation type, the
results can be: |
- Min radius: the extremum element is detected based
on the shortest distance from the axis-system origin
- Max radius: the extremum element is detected based
on the longest distance from the axis-system origin
- Min angle: the extremum element is detected based on
the smallest angle from the selected direction within the
axis-system
- Max angle: the extremum element is detected based on
the greatest angle from the selected direction within the
axis-system
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The radius or angle value is
displayed in the Polar Extremum Definition dialog box for
information. |
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Click OK to create the extremum point.
| The element (identified as Polar extremum.xxx), a point in this
case, is added to the specification tree. |
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The result of a polar extremum feature is in most cases made of one or
several points. In some cases, the result can also contain also wires.
If you always want a point to be created, first create the polar
extremum feature then launch the Extremum command and select the polar
extremum feature.
Open the Extremum3.CATPart
(Extremum polar feature in blue and extremum feature in pink as shown in
image below).
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