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combining curves into one chain

2

2ms1

New member
I would like to do the following boundary blend such that the whole area between the straight end and the "C" are filled in. However, the straight area is made up of one chain whereas the"C" is made up of two curves rather than one.


How can I combine the two halves of the "C" so that the boundary blend will work accomplish what I'm going for?


View attachment 4314
 
Have you tried right-clicking above the circular edge? That will cycle thru the different selection options, and may allow you to select the continuous arc.
 
Hi,

Unfortunately, that was one of the options overhauledin wild fire releases (pardon my ignorance, if I am wrong). It was really a useful option that I used to create my geometries.

Any way, seems like this problem is addressed in WF4(enhancement in WF4??)
Because I checked in WF4 and it is working fine.

So basically if you are not start using WF4the option is

application- legacy- curve- composite- exact- then the option that you are looking is available

Cheers

Leow

Edited by: leow_john
 
By Right Clicking he means Right Tapping you just keep tapping right button for micro second and it will show you partial curve and different chain possibilities or you can select any portion of the curve and hold Shift and click the other end to show the full curve as the 2nd curve reference.

You can also click on the control curves Dashboard option and select details in first or second direction curves list to get an easier to use selection dialog that doesn't require highly skilled mouse keyboard coordination.

Also read the wildfire Selection How to on quick reference card or on proE browser default home page.
file:///C:/Program%20Files/ProENGINEER%20Student%20Edition/h tml/usascii/proe/fundamentals/fund_four_sub/about_selection. htm

[url]http://www.ptc.com/community/proewf3/newtools/quick_referenc e.pdf[/url]

Michael


Edited by: mjcole_ptc
 
Two ways:


1 - What Michael suggested. Once in the 'Details' dialog for the curve set you want, pick the actual curve from the list at top. Then, you can either use the control key to add other segments or you can select rule options like tangent chain or start and end points.


2 - Make a composite curve like leow_john suggested. You don't need to go through the legacy menu, but it's less than intuitive. Prior to creating your boundary blend, select one of the edges that make up your 'C'. You want to make sure you have selected the edge itself, not the curve feature (assuming it is a curve). When you've selected the edge, it'll highlight in a fat red line. Skinny red means a feature.


Once you've selected it (you only need to select one of them), go to edit -> copy and than edit -> paste. You can also do control-C and control-V. You'll then be taken to the composite curve dashboard. You can then use SHIFT (not control) to select from the available edge chains or go to the details dialog similar to the above.


I like to use approximate curves instead of exact. The name is confusing, they are an exact geometric copy of the segments, they are just merges into a single spline entity rather than multiple. Makes for cleaner surfaces, but they only work on tangent chains. In your case, the resulting quilt will have 2 surfaces with an exact composite curve but only one surface with an approximatecomposite curve.
 
Ahh...the thing that worked the easiest in this situation was selecting one "half C", then holding Shift, then clicking the same "half C" again, then clicking the other "half C", and then releasing shift -- presto one chain rather than two.
 
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