Easy question on Eval curve / Eval length

Replies to This Discussion

Permalink Reply by djordje on March 26, 2013 at 5:55am

Not sure I understand you.

From three decimal number (10.000) you lowered to two decimal number (0.05). I guess that is decreasing of accuracy.

0.05 is 0.050. Is that what you need?

Permalink Reply by Landscape on March 26, 2013 at 6:42am

Ouch, I'm sorry. My geometry is 100 meters, I would like that my steps are of 0.05 meters at least. I can't set slider with 2000 steps because geometry is variable, could be smaller/largest than 100 meters.

Permalink Reply by djordje on March 26, 2013 at 9:13am

The steps always need to be equal?
If that is so, try this:

Attachments:

• curve_length.gh, 2 KB

Permalink Reply by Landscape on March 26, 2013 at 10:25am

Your approach works, but I would like to move a point along this geometry with a defined step size (in the example below, geometry length is 138 meters, I defined a step size of 0.5 instead of 0.05 only to be more clear). 

Permalink Reply by Landscape on March 27, 2013 at 3:11pm

Anyone? Thanks a lot!

Permalink Reply by alex jenter on March 27, 2013 at 6:02pm

have a go with this def, goal is find numbers that could be length parameters of curve at a certain increment, put them in a list, choose one and evaluate it.

My approach would be to divide your curve length by the chosen increment, to get the desired number of steps, feed that number into the series count and the increment into the series step. then choose a number out of the series via slider and listItem, then evaluate by the length of the curve.

Attachments:

• moveByIncrement.gh, 3 KB

Permalink Reply by Landscape on March 28, 2013 at 5:58am

This is what I wanted. DIVIDE CURVE is more accurate. Don't like to use SLIDER because max value doesn't match, every time I need to change it or assume it larger than a defined length (unfortunately I don't know another way). Thanks a lot Djordjie and Alex.

Permalink Reply by Landscape on March 28, 2013 at 6:45pm

There is a problem with my definition: example, if my curve is defined by 200 steps, point can only do a movement from step 0 to 200 (it's consistent), but I would like to go over, like a loop (my curve is closed). Hope that someone could help me!! ;-)

Permalink Reply by Hannes Löschke on March 29, 2013 at 12:38pm

Set W input of ListItem to true. This will wrap indices around the list end.

Permalink Reply by Landscape on March 29, 2013 at 5:45pm

Great, I didn't know this option. Thanks a lot Hannes!! ;-)

Permalink Reply by Hannes Löschke on March 30, 2013 at 12:43pm

A little curiosity can take you a long way. Just hover over inputs you don't know by heart.

Permalink Reply by Landscape on April 4, 2013 at 1:11pm

Beautiful words!! ;-)