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World coordinate system in quick 3d

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  • D Offline
    D Offline
    der Uhu
    wrote on 26 Mar 2025, 19:23 last edited by
    #1

    Greetings! I'm playing around with qtquick 3d and I cannot understand, what is the default dimensions of built-in shapes, like #Sphere, #Cube etc.? I expected these to be 1x1x1 (and this is, what is actually printed, when I query corresponding Model properties), but for instance on simple qml examples I need to place the shapes at distance about 80 between each other so that the items do not overlap. Also, to get the item to be visible in a window, I need to move camera from the origin by at keast 100 along z axis. What do I miss here?

    Rgrds,

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    • J Offline
      J Offline
      Jonas Karlsson
      wrote on 31 Mar 2025, 11:12 last edited by
      #2

      Hi. The default dimensions of built-in shapes are around the 100x100x100 size, see https://doc-snapshots.qt.io/qt6-dev/qml-qtquick3d-model.html#mesh-format-and-built-in-primitives . Most properties in QQ3D are built around these dimension being the "unit size".

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      31 Mar 2025, 11:12

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