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I have drawn some arcs to create a long ribbon-shaped line and every time I re-open the drawing the curbes of those arcs are changed to straight lines with corners. How do I get the curves back?

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Arcs appear as straight lines, circles appear as polygons

Common causes:

1. VIEWRES is set too low (WHIPARC has to be off) , set it to 5000.

2. SHADEMODE has been set to other than 2D

3. WHIPARC is set to 0. (Viewres will have no effect when whiparc is set to 1)

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The theory behind the straights, in an attempt to speed up graphics lots of software uses a simple trick of showing curves as multiple straights. You will often find in Autocad an arc will not touch a line but an intersection will reveal true point. Like rkent you can control the straights the bigger the number the trade off is graphics speed.

 

I am sure like lots here we just live with it and do RE when an improved image is required.

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............How do I get the curves back?

 

The quick answer is use the command REGEN first.

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Thank you rkent! Very helpful.

 

 

 

 

Arcs appear as straight lines, circles appear as polygons

Common causes:

1. VIEWRES is set too low (WHIPARC has to be off) , set it to 5000.

2. SHADEMODE has been set to other than 2D

3. WHIPARC is set to 0. (Viewres will have no effect when whiparc is set to 1)

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