How can I get an arc tangent to a surface from two points ,ont of the points is on the edge of the surface, the other one is above the surface.
A picture would be great: click to edit your post, then drag and drop an image file into it.
Proposal (see image below):
-
Set Osnap to End.
-
Find the plane in which you want to construct the arc.
-
Find the lines that are defined by the surfaces cutting the plane (black in the image).
-
Extend the lines:
line
, optionTangent
(red) -
Create a bisector line:
line
, optionBisector
(purple)Create a line perpendicular to the surface with the edge:
line
, optionPerpendicular
-
Set Osnap to Int and Perp, and draw arc with center on intersection of purple lines and perpendicular to black line at top (blue).
Hi- try: make a line tangent to the surface at the first point by making a line in the Cplane and using OrientCrvToEdge. Use this line as a guide for the direction in Arc StartPoint Direction EndPoint.
-Pascal
How can I get these curves?
Iso curve on the surface is ok?
Any curve on the surface will do the one above is an isocurve (_ExtractIsoCurve)
You could project a curve on the surface (_Project)
Point can be anywhere