Shark FX's "Three Tangent Curve" solution for three circles is the "inner" solution. is there any way to select/force the "outer" solution??

Art
[email protected]

Hi Art,

for me it works fine when I try to select the tangent items in area of the expected tangent point.
Please see picture.

Regards
George

George-

THANKS!! clicking very close to the expected tangent points works.

Art
[email protected]

more observations for the communities detectives:

inner pair of control point splines-
1.) after selecting the three tangent circle tool and moving the cursor over the center circle, the "on" symbol appears AND can be moved around the complete circumference of the circle with the cursor.
2.) after selecting the tangent point for the center circle (ie: it's known) and moving the cursor over the control point spline on the right (ie: the original), the "on" symbol appears at approximately the 4 o'clock location and CAN NOT be moved (ie: the "on" symbol will not follow the cursor around the perimeter of the control point spline).
3.) after selecting the tangent point for the center circle (ie: it's known) and the control point spline on the right and moving the cursor over the control point spline on the left (ie: the copy via Polar Duplicate), the "on" symbol appears at approximately the 10 o'clock location (ie: the expected location given the 4 o'clock experience with the original) and CAN NOT be moved (ie: the "on" symbol will not follow the cursor around the perimeter of the control point spline).
4.) selecting a point on the control point spline on the left yields the unwanted "inner solution" circle.

outer pair of control point splines-
1.) after selecting the three tangent circle tool and moving the cursor over the center circle, the "on" symbol appears AND can be moved around the complete circumference of the circle with the cursor.
2.) after selecting the tangent point for the center circle (ie: it's known) and moving the cursor over the control point spline on the left (ie: the original), the "on" symbol appears at approximately the 10 o'clock location and CAN NOT be moved (ie: the "on" symbol will not follow the cursor around the perimeter of the control point spline).
3.) after selecting the tangent point for the center circle (ie: it's known) and the control point spline on the left and moving the cursor over the control point spline on the right (ie: the copy via Polar Duplicate), the "on" symbol appears at the 3 o'clock location and CAN NOT be moved (ie: the "on" symbol will not follow the cursor around the perimeter of the control point spline) on the upper half of the control point spline BUT will follow the cursor on the bottom half of the control point spline.
4.) selecting a point on the control point spline on the right yields the unwanted "inner solution" circle.

Art
[email protected]

it occurred to me last night that perhaps I'm asking the wrong question; the classic problem of cause & effect. what controls, enables, or influences the appearance of the "on" symbol over curves?? the idea being if the Three Tangent Circle can't be provided the intended information, maybe that's the problem............ see attached image. the "on" symbol follows the cursor over the complete extent of both control point splines that result from projecting circles onto the curved surface (tested with the Line tool)! as reported in a previous post, the "on" symbol does NOT follow the cursor over either control point splines that result from projection of the previous control point splines.... the "direction" of all three curves on the flat surface is the same

Art
[email protected]

Hi Art

The Three Tangent Curve works on any three curve types. The solution iterates from positions and derivatives initially seeded from the three pick locations. It could be you have a situation where it cannot find a solution. If you have something not solving, can you provide an example file with only three curves in it? No additional construction geometry would help me repeat the steps easier.

>>influences the display of the "on" symbol
Your LogiCursor Hit Radius controls when the On condition is identified. This is under Prefs: Snaps.

Tim

Edited by user Friday, March 11, 2016 4:06:48 PM(UTC)  | Reason: Not specified

This is now fixed in 1192. All four cases can now be found.

Click on the image to see animated gif for two cases.

Tim

Edited by user Saturday, March 12, 2016 1:48:36 AM(UTC)  | Reason: Not specified

Hi Art

>>when will 1192 be available for use given SP2 1191 is now being Beta tested??

I'll upload 1192 tonight or early Sunday for you. There are only a couple of changes since 1191.

Tim

EDIT: I need to try 1192 for Sunday night.

Edited by user Sunday, March 13, 2016 2:16:40 AM(UTC)  | Reason: Not specified

Excellent!

Thank you Tim.

Antoine

Art

What is your Snap Hit Radius set at? (Under prefs)

Tim