How to cut a curve in CAESES

[Mr. Hongdan Wang 0]

Hi

 

Is the CAESES have the function of cutting a curve by a point which is on the line?

 

Best

 

Steven

[Matthias Maasch 21]

Hi Steven,

 

yes, it is possible. Please find attached a sample file. I created a NURBS curve " basicCurve". On the basicCurve I created a point "pointOnCurve". The position of this point depends on the t-position of the curve. The t-position is controlled by the parameter "positionOnCurve". Finally I created an image curve "sectionalCurve" (red). The source of the sectionalCurve is the basicCurve. The domain of the sectionalCurve is restricted by the parameter "positionOnCurve" which controls  the t-parameter on the basicCurve.

 

Play around with the parameter positionOnCurve and you will see the effect. Does that help?

 

Cheers

 

Matthias

 

 

sectionalCurve.fdb

[Mr. Hongdan Wang 0]

Hi Steven,

 

yes, it is possible. Please find attached a sample file. I created a NURBS curve " basicCurve". On the basicCurve I created a point "pointOnCurve". The position of this point depends on the t-position of the curve. The t-position is controlled by the parameter "positionOnCurve". Finally I created an image curve "sectionalCurve" (red). The source of the sectionalCurve is the basicCurve. The domain of the sectionalCurve is restricted by the parameter "positionOnCurve" which controls  the t-parameter on the basicCurve.

 

Play around with the parameter positionOnCurve and you will see the effect. Does that help?

 

Cheers

 

Matthias

Thanks Matthias, It helps a lot. But I still can't cutting a curve by the points in below case. Attachment is the case

 

Could help to cut the curve into three segments by the points which generated the curve?

Cutting by points.fdbc

[Mr. Nozaki Fumiya 0]

Hi Steven,

 

Please have a look at the attached file.

I use the "getParameterShortestDistanceSquared" function to get parameters on the curve.

 

Hope this helps,

Fumiya

Cutting_by_points.fdbc

[Ilias Soultanias 0]

Hi Steven and Nozaki

 

an alternative to "getParameterShortestDistanceSquared" command is the ft() command.

 

it gives you the parameter value of the curve at a specific coordinate with regard to a certain axis (0-x,1-y,2-z)

 

to get it you can type

 

curve.ft(1, point.getY()) 

 

assign it to a parameter and you get the t parameter of the "curve" at the Y coordinate of the "point"

Cutting by points.fdbc

[Mr. Hongdan Wang 0]

Hi Steven,

 

Please have a look at the attached file.

I use the "getParameterShortestDistanceSquared" function to get parameters on the curve.

 

Hope this helps,

Fumiya

Hi Nozaki

 

Thanks very much, It really help me a lot.