Hi,
I have rivet circles brought in from photogrammetry, those on the lower parts of the fuselage are as expected leaning inwards as they disappear under the body.
In perspective view how can I copy my Rhino drawn planar upright circle (XYplane) to those and make it take on their planar angle ?
For most on the sides I havent bothered for what is needed.
Once they are in position I need to project to skin so I would get a very eliptical circle after the projection for the lower ones. They will cease to be perfect circles anyway.
I am not going to create a Cplane for each rivet angle either !
Hi,
Most of them are just points in fact so no way of overcoming that one !!! , but some are planar curves (properties choice of planar or circle, choosing circle makes it planar and a circle)
In the attached jpg the orange circles are photogrammetry.
However as can be seen in the perspective view jpg attached I also need to copy the light blue rhino circles to the points and have the rhino circles take on a far better orienation than hang there like earings !
Command something like copy to point and reorient tangent to nearest surface !
OK, this will work for closed planar curves. For points, not much you can do as points do not have a unique “plane” in which they lie, and thus impossible to determine the plane for copying the circle.
Line>Normal. Select the surface, then when it asks you for the start point, don’t panic, run the mouse cursor over to the point in question - you will see a tracking line to the surface from the point - so click once on the point and then again on the same point - you will get a line normal from the surface to the point.
And yes, this can be scripted, but it’s far past my bedtime…
on the edge of my seat here …as I need to then know how to get those circles (blue earings in jpg) to be drawn on the point that now thank s to advice will have a ‘normal’ line to surface, (circle centre being the copy from location I used) and oriented about that line. So circle is tangent to surface.
I could also I suppose draw the circle tangent to surface where that line intersects the surface. If I want them on the surface, they must end up projected onto it at the end of this mission, if I find out how to do that, and just found out, PULL command
steve, if you have lines that are normal to your surface, make sure they are extending all the way through a bit, then just run the pipe command on all the lines at once. Voila, cylinders. Intersect those with your surface and your current quest will be complete!
Carvecream,
what a great idea.
Is there any way of extending those lines all at once a little bit into the surface , else its a one by one task.
Just remains for me to find out how to create circles at the points tangent to the surface where the ‘normals’ line meets surface and job done, as I also need a visual prior to the ‘PULL’ command of all the rivets plotted and their diameters to make sure I have the pattern correct.
You can make the perpendicular (edit: normal to surface) curve with “bothsides” so you don’t need to extend it.
The tool in Rhino is just a macro:
! _Line _Normal _Pause _Pause _Bothsides
So you can also add a length to it:
! _Line _Normal _Pause _Pause _Bothsides 10
And you can just copy paste this line into Rhino and off you go.
If your surface is preselected then just paste once, click on surface and rightclick to repeat as many times you like.
You can change “10” to what ever value you like if you want that automated.
So when in Rhino, just “paste”. No need to start anything.
The first line without the “10” value is the Rhino built in tool, from the right-click option from the icon for line normal to surface.
It is a separate tool in the line menu (icon for polyline) in rhino
