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Thread: Viewing arcs

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    Default Viewing arcs

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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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    Quote Originally Posted by Kristen N View Post
    ............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.




    Quote Originally Posted by rkent View Post
    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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    Thanks eldon, that worked!

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