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How to Draw a line with a width and no AA?

Discussion in 'Scripting' started by fwalker, Mar 16, 2015.

  1. fwalker

    fwalker

    Joined:
    Feb 5, 2013
    Posts:
    250
    I can use:
    DrawAAPolyLine(float width, params Vector3[] points);

    But then I only have:
    DrawPolyLine(paramsVector3[] points);

    So, how can I draw a line with a width and no AA?

    Thanks
     
    fwalker, Mar 16, 2015
    #1

  2. shawn

    shawn

    Unity Technologies

    Joined:
    Aug 4, 2007
    Posts:
    552
    Try this:
    Code (CSharp):
    1. Handles.DrawAAPolyLine(EditorGUIUtility.whiteTexture, width, points);
    DrawAAPolyLine uses the texture passed to create an AA effect. Using just a solid white texture should cause it to be aliased.
     
    shawn, Mar 16, 2015
    #2

  3. fwalker

    fwalker

    Joined:
    Feb 5, 2013
    Posts:
    250
    Oh I see you mean use:
    DrawAAPolyLine(Texture2D lineTex, float width, paramsVector3[] points);

    and pass it a texture? Not sure how it works but I will look into it.
    I am actually wanting it to NOT be alias. But I will try thing out.
    Thanks.
     
    fwalker, Mar 16, 2015
    #3

  4. hippocoder

    hippocoder

    Digital Ape Moderator

    Joined:
    Apr 11, 2010
    Posts:
    29,723
    This is a farily wonderful thing.
     
    hippocoder, Mar 16, 2015
    #4

  5. shawn

    shawn

    Unity Technologies

    Joined:
    Aug 4, 2007
    Posts:
    552
    If you want it to NOT be aliased, then what's wrong with DrawAAPolyLine (width, points)? AA stands for Anti-Aliased.
     
    shawn, Mar 17, 2015
    #5

  6. fwalker

    fwalker

    Joined:
    Feb 5, 2013
    Posts:
    250
    Right I figured but there is no DrawPolyLine (width, points) why? That is what I was after.
     
    fwalker, Mar 17, 2015
    #6

  7. shawn

    shawn

    Unity Technologies

    Joined:
    Aug 4, 2007
    Posts:
    552
    That's what I told you originally. If you use DrawAAPolyLine with the white texture passed in, it will give you the same effect as DrawPolyLine, which is a line that is aliased.
     
    shawn, Mar 17, 2015
    #7

  8. shawn

    shawn

    Unity Technologies

    Joined:
    Aug 4, 2007
    Posts:
    552
    For clarity:

    DrawAAPolyLine (width, points) == Anti-aliased with width
    DrawAAPolyLine (EditorGUIUtility.whiteTexture, width, points) == Aliased with width
    DrawPolyLine (points) == Aliased without width
     
    shawn, Mar 17, 2015
    #8

  9. wangshihao

    wangshihao

    Joined:
    Aug 14, 2019
    Posts:
    1
    thanks, veryhelpful
     
    wangshihao, Nov 20, 2019
    #9

  10. MadeFromPolygons

    MadeFromPolygons

    Joined:
    Oct 5, 2013
    Posts:
    3,878
    Please do not necro/resurrect a nearly 5 year old post just to say "thanks".
     
    MadeFromPolygons, Nov 20, 2019
    #10
    UnityMaru likes this.