3D view rotation challenge

which is fastest way to rotate view aligned with element plane but keeping view Z rotation up?

The attached file is simplified workflow when dealing with reality models. The issue is that if reality mesh model of a building is not aligned with drawing axis then it is not easy to rotate view which is aligned with facades. As it is not parametric model there are no straight lines to snap to.

Challenge:

Create 4 saved views(or ACS) so each view is aligned with each of mesh faces(red) but keeping Z axis vertical so the black outline is orthogonal. Outline is not snappable and is only a reference it is allowed to snap to red mesh only.

Correct result:


Wrong:

Rotate_challenge3D.dgn

Parents
  • Hi Oto,

    This method seems pretty simple:

    1. Create a planar shape from a Top orientation which bisects the mesh. 
    2. With the Trim Surfaces command, trim the new surface with the red mesh 
    3. Copy the new surface vertically 
    4. Key in Rotate View Points, follow the prompts and snap to the appropriate points on the two copies of the new surface
    5. Select the view to be rotated
    6. Save the view
    7. Repeat steps 4 - 6 three more times 

    Here's a short video to illustrate the method:

    Regards,
    Ron

  • This may work I have to check if this same approach could work with reality meshes. If trim will not work then I could project line on mesh and try to use that.. Only issue that for some reason it doesn't perfectly align with the outline.

  • The more approaches the better.

    There was such approach also:



    I think that you could also use the Place Section Callout tool to generate a view that is aligned with the selected edge (vertices) whilst preserving the Z- direction.

    The Place Section Callout tool works with Accudraw and you would place the Section Callout in a Top view.

    After placing the Section Callout, you can use the Apply View button from the Menubar (Camera Position should be set).

    Once placed, the SC can be moved and rotated to align with another face as needed using Accudraw + Snaps.

  • The more approaches the better.

    Its a classic example of how you can solve a problem in MicroStation in many different ways, each one formulated by different people with a different mindset on how to approach the challenge.

  • While I find the ACSes knowledge important I think in a Reality Capture scenario (with more buildings) it may not be what you want. Serveral ACSes for several buildings?

    @Oto: What line of work are your trainees and what are they trying to achieve after this rotation step?

  • Serveral ACSes for several buildings?

    If the situation demands it, then absolutely yes. If you have a building/object where the sides are orthogonal to each other but not to the world, then a single ACS will suffice however, the provided mesh doesn't have orthogonal sides (on the base edges), so Oto's condition set out in the opening post :

    Create 4 saved views(or ACS) so each view is aligned with each of mesh faces(red)

    correctly requires 4No. different ACS. When I create 3D models, I always aim to keep orthogonal sides/elevations parallel to the XY axis of the world coordinate system yet there may be elevations which are angular so for these I would always use at least 1 custom ACS.

  • @Oto: What line of work are your trainees and what are they trying to achieve after this rotation step?

    Trainees would like to utilize Reality Models and/or Point Clouds. Problem is that existing workfows are not suitable for utilizing such data and also most examples in tutorials are too simplified. As reality models can't be exported to BIM formats then trainees would like to digitize them as CAD models before using in BIM. Without correctly aligning the models they can get wrong measurements and if wall of building is not straight or angle between walls is not 90 degrees as expected they could model them incorrectly. When reality strikes BIM then it becomes complicated.

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  • @Oto: What line of work are your trainees and what are they trying to achieve after this rotation step?

    Trainees would like to utilize Reality Models and/or Point Clouds. Problem is that existing workfows are not suitable for utilizing such data and also most examples in tutorials are too simplified. As reality models can't be exported to BIM formats then trainees would like to digitize them as CAD models before using in BIM. Without correctly aligning the models they can get wrong measurements and if wall of building is not straight or angle between walls is not 90 degrees as expected they could model them incorrectly. When reality strikes BIM then it becomes complicated.

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