Joining a poly & arc to create a new poly - Polyloop

JoeK · 12th October 2007, 23:05

I'm continuing at learning Amapi by trying to create a lamp standard.

A lamp standard is straight with a curved section at the top. For this particular model, the vertical straight is 5 meters, with a 2.5m radius at 90 degrees on top of that.

I created a poly straight line, and then created a 2.5m arc and joined the edge of the arc to the top of the poly - therefore creating the profile for the lamp standard.

In order for me to extrude the lamp shape, I have to join the poly and the arc into a single, continuous polyline. Somehow, I managed to do this in AMAPI 6, but can't figure out a way in Amapi 7.52.

Any suggestions? Tx.

spargonaut · 13th October 2007, 19:35

You can either weld the two lines as long as you have snapped the second to the end of the first. I have found if the two connecting points aren't exactly at the same point then weld will fail - just move the arc away and snap again. I find this occurs due to the way I model which may not be the case for you.

Otherwise, after you have made the 5m line select arc and click on "connect to the end of the last selected curve" icon which appears after you select "arc", then put the parameters in by pressing "tab" once for arc radius then input 2.5m then press "enter" then arc angle (90˚) then "enter" then num points (1 upwards) then enter.

Learn to use the parameter box.

JoeK · 14th October 2007, 22:25

Thanks. I do use the parameter box, but never thought to use the end of the straight as a start for the arc. I've tried to bring the 2 separately created elements together - I'll try the WELD command.

caddict · 1st November 2007, 04:54

Quote:

click on "connect to the end of the last selected curve" icon which appears after you select "arc"

I don,t think this icon appears in Amapi 6. Is that right?

Thomas · 1st November 2007, 10:13

To do that, you have to use the composite curve system. The easiest way:

Open your 2D floating panel. Click on the small losange to stick it open, even when you done with the tool (near the icon to rotate this floating panel)
Pick the polyline and create your polyline. Don't validate after your last point, I mean, don't quit the tool
Without quitting the polyline tool, pick the arc circle tool in the 2D panel and create your arc circle: the first point of the arc circle is connected with the previously created polyline.
Don't forget to use the sapce bar with the arc circle tool to use the constraints (to have 90, 180, etc. arc circles).

I hope it helps!

caddict · 1st November 2007, 20:34

Thanks for that Thomas!

The space bar trick is also good. That's the thing with great software...there is always another new feature to learn

12th October 2007, 23:05	#1 (permalink)
JoeK Vertex Join Date: May 2005 Location: Ruskin, BC, Canada Posts: 28	Joining a poly & arc to create a new poly I'm continuing at learning Amapi by trying to create a lamp standard. A lamp standard is straight with a curved section at the top. For this particular model, the vertical straight is 5 meters, with a 2.5m radius at 90 degrees on top of that. I created a poly straight line, and then created a 2.5m arc and joined the edge of the arc to the top of the poly - therefore creating the profile for the lamp standard. In order for me to extrude the lamp shape, I have to join the poly and the arc into a single, continuous polyline. Somehow, I managed to do this in AMAPI 6, but can't figure out a way in Amapi 7.52. Any suggestions? Tx. Attached Thumbnails

1st November 2007, 10:13	#5 (permalink)
Thomas Always learning new stuff Join Date: Jul 2002 Location: Merignac, France Posts: 11,230	To do that, you have to use the composite curve system. The easiest way: Open your 2D floating panel. Click on the small losange to stick it open, even when you done with the tool (near the icon to rotate this floating panel) Pick the polyline and create your polyline. Don't validate after your last point, I mean, don't quit the tool Without quitting the polyline tool, pick the arc circle tool in the 2D panel and create your arc circle: the first point of the arc circle is connected with the previously created polyline. Don't forget to use the sapce bar with the arc circle tool to use the constraints (to have 90, 180, etc. arc circles). I hope it helps! __________________ Polyloop owner & Administrator - no support by PM or email. Polyloop [EN/FR] - Meuuh [FR +16 ans] - Totyo [FR] - Pixologic [JOB] - Le ZBlog [JOB] - La3dpourlesnuls [FR]

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13th October 2007, 19:35	#2 (permalink)
spargonaut Vertex Join Date: Mar 2007 Posts: 4	You can either weld the two lines as long as you have snapped the second to the end of the first. I have found if the two connecting points aren't exactly at the same point then weld will fail - just move the arc away and snap again. I find this occurs due to the way I model which may not be the case for you. Otherwise, after you have made the 5m line select arc and click on "connect to the end of the last selected curve" icon which appears after you select "arc", then put the parameters in by pressing "tab" once for arc radius then input 2.5m then press "enter" then arc angle (90˚) then "enter" then num points (1 upwards) then enter. Learn to use the parameter box.

14th October 2007, 22:25	#3 (permalink)
JoeK Vertex Join Date: May 2005 Location: Ruskin, BC, Canada Posts: 28	Thanks. I do use the parameter box, but never thought to use the end of the straight as a start for the arc. I've tried to bring the 2 separately created elements together - I'll try the WELD command.

1st November 2007, 20:34	#6 (permalink)
caddict Vertex Join Date: Oct 2007 Location: New Zealand Posts: 5	Thanks for that Thomas! The space bar trick is also good. That's the thing with great software...there is always another new feature to learn