Dithered rendering / shading (b&w linework or dots) ? Is it possible?

Discussion in 'AutoCAD' started by StarMan, Sep 4, 2007.

  1. StarMan

    StarMan Guest

    If one has an object with curves which one wants to present in a perspective
    linework drawing, is there ANY way to create dithered shading on parts to
    denote the sense of 3D, without having to add them manually in paper space?

    In the example I'm looking at, the object is in a viewport in perspective,
    hidden line. The object MUST be presented as B&W linework ONLY. The dwg
    looks too "flat", though, and could really use some black linework shading
    to indicate depth. Dots would work well.

    Is there any way to use the "shading with edges" command in acad to generate
    dithered monochrome dots, SPARINGLY, instead of continuous tone shading?
     
    StarMan, Sep 4, 2007
    #1
  2. StarMan

    Bill Gilliss Guest

    A follow-up:

    1) I have tried using SOLPROF to generate the hidden-line image, but it
    tends to leave out too many edges that are necessary to understanding
    the object.

    2) Plotting from layouts provides better registration of the images
    than plotting from modelspace.

    3) By using Photoshop, there are other options for how to treat the
    rendered layer: penstrokes, halftone, etc.
     
    Bill Gilliss, Sep 7, 2007
    #2
  3. StarMan

    Bill Gilliss Guest

    One last thing:

    Having separate layers in Photoshop for the dots and the lines makes the
    editing there much easier than if they are on one layer. I did try
    creating a custom visual display mode in AutoCAD (rendered, everything
    light gray, faceted edges on, visible edges black) and then converting
    the resulting TIFF to a dithered bitmap in Photoshop, but editing the
    edges messed up the dithered shading, so I am sticking with the
    two-layer system.
     
    Bill Gilliss, Sep 7, 2007
    #3
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