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dual sided - Macromedia Director 3D

this will most likely only apply to a few people when using single sided objects like a plane a patch or a nurbs object. when you make an object in your 3d program thats one sided its not necessary to make it double sided before exporting. bring it in director single sided and change visibility to both. this should help to avoid increasing the file size of your 3d object needlessly...

  1. #1

    Default dual sided

    this will most likely only apply to a few people when using single sided
    objects like a plane a patch or a nurbs object. when you make an object in
    your 3d program thats one sided its not necessary to make it double sided
    before exporting. bring it in director single sided and change visibility to
    both. this should help to avoid increasing the file size of your 3d object
    needlessly


    tyree_2 Guest

  2. #2

    Default Re: dual sided

    Using "visibility=#both" will render every model from both sides which means
    that the amount of polygones that have to be rendered will be doubled. Compared
    to the amount of polygons that are rendered when you use doubled geometry and
    "visibility=#front" more polygones have to be rendered.

    Lets say there is a simple plane with two polygons. When you render it with
    "visibility=#both" it will render four polygones. If you use doubled geometry
    (two polygones for each side), there are four polygones but only two are
    rendered at the same time.

    When you have a model with 1000 polygones, copy the model, flip the nomals of
    the model and merge it with the original model, it will now have 2000 polygones
    but the maximum number of visible polygones is 1000. So filesize will become
    bigger and performance better.

    hondo3000 Guest

  3. #3

    Default Re: dual sided

    I use a lot of curved surfaces nurbs that are single sided if I make it double
    sided in max the file size goes up a great deal. when I merge the points
    together on said double sided object. the geometry takes a hit that I dont
    like. the whole purpose for me using nurbs is the flexibility speed and the
    smooth surface. merging points together causes me to lose that smooth surface.
    this logic may sound illogical but the surface director creates isnt as big as
    the one I would export. I was honestly surprised how well director followed the
    contours of my objects. since a variety of them or actually curves that I drew
    in the viewports


    tyree_2 Guest

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