elipse question
All  1-3  4-6

Previous
Next
 From:  Frenchy Pilou (PILOU)
909.4 In reply to 909.3 
Yes a little bit tricker :) and surely more tricker if the quadrangle is anyformed (an ellipse by any 4 external points)
There is not function "Ellipse tangent" in the future?
---
Pilou
Is beautiful that please without concept!
My Gallery
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
Next
 From:  Michael Gibson
909.5 In reply to 909.4 
Hi Pilou - any 4 points will make a curve that is made up of 4 different ellipse segments I think, not just one single ellipse.

Here is one trick you can use to deform a circle by 4 corner points, which is to create a trimmed surface and then move the surface points around.

Start by drawing a plane (not a rectangle, but a filled-in plane from Draw solid / Plane):



Now draw a circle centered on the plane:



Trim the plane by the circle, then select the resulting disk surface and turn on control points with Edit / Show pts:



Now the points can be adjusted and the circle trim curve on the surface will deform as the underlying surface is stretched around:



When you're done, you can extract the trim curves as a regular curve object by selecting it and using Edit / Copy then Edit / Paste.


> There is not function "Ellipse tangent" in the future?

Often times these kinds of calculations are more difficult with ellipses since there are more variables to define, like 2 different radius values instead of a single radius. This makes for a large number of different proportioned ellipses that can fit tangent to 2 curves.

- Michael

  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged

Previous
 From:  Frenchy Pilou (PILOU)
909.6 In reply to 909.5 
Thx for the tricky trick of the "trim plane(not rectangle) by circle" !
It always the more simple things that work better ! :)
---
Pilou
Is beautiful that please without concept!
My Gallery
  Reply Reply More Options
Post Options
Reply as PM Reply as PM
Print Print
Mark as unread Mark as unread
Relationship Relationship
IP Logged
 

Reply to All Reply to All

 

 
 
Show messages: All  1-3  4-6