AC3D Forums Non-polygon surfaces (lines and polylines) question
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 30th November 2006, 08:47 PM #1 AndyH Member Advanced member   Join Date: Oct 2004 Posts: 34 Non-polygon surfaces (lines and polylines) question Hi How do I remove lines / polylines from an object? I'm getting an error message saying "Boolean: non polygon surfaces detected (lines or polylines). Both objects must be made from polygons only." when I use the boolean operations on a couple of objects. __________________ ovine by design Visit us for retro freeware games
 1st December 2006, 11:13 AM #2 Stiglr Senior Member Professional user     Join Date: Feb 2004 Location: Portland, OR Posts: 604 Re: Non-polygon surfaces (lines and polylines) question Are you perhaps trying to Boolean a poly line object or something like that? I think the rule is that both objects involved in a Boolean operation need to be composed of polygons (cylinders, boxes, spheres, etc.) If it's a poly shape you're using for one of the operands, perhaps try selecting the vertices of your shape and making a convex hull object or Ordered Surface object out of it, then involving it in a Boolean operation. Just kind of guessing from your description here... __________________ Flight Sim Project Contributor My Gaming Rig: i5 2500K Quad-Core CPU at 3.3GHz MSI P67A-C43 mobo 4GB of PC12800 DDR3 memory Windows 7 1GB Galaxy GeForce GTX550 Ti video card GeForce 270.61 drivers (4/2011) Cougar joystick/throttle combo CH Pedals
1st December 2006, 11:30 AM   #3
AndyH
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Re: Non-polygon surfaces (lines and polylines) question

Quote:
 Originally Posted by Stiglr Are you perhaps trying to Boolean a poly line object or something like that? I think the rule is that both objects involved in a Boolean operation need to be composed of polygons (cylinders, boxes, spheres, etc.) If it's a poly shape you're using for one of the operands, perhaps try selecting the vertices of your shape and making a convex hull object or Ordered Surface object out of it, then involving it in a Boolean operation. Just kind of guessing from your description here...

Sorry, I shoul dhave been more specific. I have used a line / polyline to extrude an object (rotation or via the extrude tool) and I am left with a polygon object. I can triangulate its surfaces (or not) but I get this error when I try to do the boolean operation.

In my newly extruded polygon object, I can see a white line where the poly line was but I can't seem to remove it from the object. I suspect it is this that is the problem.
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 1st December 2006, 12:06 PM #4 Stiglr Senior Member Professional user     Join Date: Feb 2004 Location: Portland, OR Posts: 604 Re: Non-polygon surfaces (lines and polylines) question I understand now. I've had that problem, too, with poly lines leaving extra vertices (and a telltale white line) after you've changed the poly into a 3D object. Not sure if this will be the answer, but check and see if there are any double vertices along the line you drew the original poly line, or even if the poly itself is an additional object from the extruded object (isolate the object from the poly using Hide Unselected commands, etc.). Try to Merge them, or failing that, weld together any overlapping double vertices; in effect, make the poly line and the object you extruded from it ONE object with no double vertices. Maybe then the Boolean will work on it. __________________ Flight Sim Project Contributor My Gaming Rig: i5 2500K Quad-Core CPU at 3.3GHz MSI P67A-C43 mobo 4GB of PC12800 DDR3 memory Windows 7 1GB Galaxy GeForce GTX550 Ti video card GeForce 270.61 drivers (4/2011) Cougar joystick/throttle combo CH Pedals
2nd December 2006, 07:54 PM   #5
luuckyy
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Re: Non-polygon surfaces (lines and polylines) question

Quote:
 Originally Posted by AndyH How do I remove lines / polylines from an object?
If your object is the result of a polyline/line edge(s) extrusion then just selecting your object and then clicking on "poly" ("set surface type" panel) will be enough.
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Last edited by luuckyy; 3rd December 2006 at 06:03 AM.

 2nd December 2006, 08:45 PM #6 AndyH Member Advanced member   Join Date: Oct 2004 Posts: 34 Re: Non-polygon surfaces (lines and polylines) question Doh - so simple.... thank you. __________________ ovine by design Visit us for retro freeware games
 2nd December 2006, 10:28 PM #7 Dennis Senior Member Professional user     Join Date: Jul 2003 Posts: 899 Re: Non-polygon surfaces (lines and polylines) question luuckyy's tip works great --- although it *would* be nice to get a "select lines/polylines" under "Edit -> Select surfaces" --- I'm usually more interested in removing such surfaces than converting them... If no plans are in the works for this, I could probably drum up a plugin in the near future.
 9th December 2006, 12:37 PM #8 Stiglr Senior Member Professional user     Join Date: Feb 2004 Location: Portland, OR Posts: 604 Re: Non-polygon surfaces (lines and polylines) question Excellent idea, Dennis... or perhaps work with Andy to just get it put into the code as a standard menu selection. Shouldn't need a "special plug in" for this: it's just good functionality. __________________ Flight Sim Project Contributor My Gaming Rig: i5 2500K Quad-Core CPU at 3.3GHz MSI P67A-C43 mobo 4GB of PC12800 DDR3 memory Windows 7 1GB Galaxy GeForce GTX550 Ti video card GeForce 270.61 drivers (4/2011) Cougar joystick/throttle combo CH Pedals

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