curve

[vitulaaak]

Hello, i would like to ask, if you can somehow create a curve related to another curve by an equation. For example:
if you make a spline and then make a sweep, you can change the dimensions of profile relatively to the position of the curve by trajpar function...but to create a curve, you would have to sweep a point...which is not possible...is there another way to do it?

 

[Guest0527211403]

You may not know it already, but you've already made the curve!

If, for example, your sweep profile is just a straight line that is controlled dimensionally by trajpar, then the other end of the line (which corresponds to the other edge of the swept surface) should be the curve that matches your intent. Select this edge (so that it highlights in red) and do an Edit->Copy followed by Edit-->Paste. This will make a curve copied from that edge (In 2001 this is called a composite curve).

Once you have copied the edge into a new curve, hide the swept surface, and voila, there is your curve!

 

[mjcole]

I know what you're getting at.

If you sketch the line from the reference and set the length of the line by a relation
like sd3 = 3*(1-trajpar) your sweep will fail because you cannot have a line of 0 length.

To overcome this dimension from your VarSecSweep section reference to an endpoint of your sketched line and give the line a constant length. Then do as justkeepgiviner mentioned above to get your curve.

Michael

 

[vitulaaak]

yes, it also came into my mind after I wrote that,because I did it in catia...