Hi,
attached the actual task, I wish a perp line out heading north east from arrow tip place on curve.
I get the feeling the words in the prompt are misleading.
Looking at what you say Pascal…
<<The initial pick is really a pick to tell Rhino what curve to be perp to
- after than it tracks around and you can click again to actually set
the first point.>>
so there are three picks allowed, first selects the line, second selects the start point and third the end point.
It is however only allowing me two picks…
lets try again…
so select the tool, see a white line moving up and down red line as osnap ( near and int) finds the line.
It is asking Start of Line…in my brain that means where I want the line to go out from, as it would to anyone.
lets go with that…(should it in fact say pick the line or pick start line as opposed to Start of Line ? )
…I pick the start point… (where arrow tip is)…in attached actual task.
it now says End of Line (Point FromFirstPoint)
<< if you use FromFirstPoint rather than clicking on a point on the curve
then that is the point from which the perp line will be drawn.>>
so I hit F and enter and pick that point again and there is no further option to take. game over.
Lets try again…
this time first pick will be just the line somewhere near the arrow tip.
second pick its asking End of Line (point FromFirstPoint) now to anyone, this is going to be confusing, I hit F and enter and its making a line going up and down my red line.
try again , first pick near arrow tip on red line, I then hit F and enter at End of Line prompt which is the next prompt that appears and mouse move sees a line following my red line. the cross hairs dont have a snap when it gets to arrow tip. and I do have snaps on.
I also try with project on and off…in fact I am confused …is project on or off when button depressed ?
disable is on when depressed, yet project is off when depressed…am I right ? appears that way…very confusing, rather it had a tick box !!!
I try it both ways, makes no difference, just a thought incase project was on and messing things up.
1 hr trying to draw one line…
Line perp from curve problem.3dm (30.2 KB)
Steve