- Wed Apr 22, 2015 10:32 am
OK, so here it is.
My thinking was: how could I get those shadows visible in my 3D or Elevation Viewpoint without the shadow casting building blocking the view?
In Elevation it is not possible because the shadow casting building is behind the Elevation cut line so it is not even considered when generating the Elevation.
In 3D, I tried to do some trick with the shadow casting building, like setting their material to 'Air' to make them transparent, but in that case they do not cast any shadows.
Also, if I place them on a separate layer and make that layer Wireframe, the result is the same: they don't cast shadows.
If I try to place a camera between the shadow casting building and the building that receives the shadow, the distances on the elevation will be perspectively distorted.
In Parallel Projection it is not possible to go between the two buildings because it is always displaying all elements.
But I realized that in Parallel View I can define a custom view in which I will look at the model from the top, but in a way that I see the elevation onto which shadows are cast. Check the attached image and you will see that by setting those values for the X, Y and Z axes I could achieve a parallel view in which I can see the cast shadows, only they are 20% of their real size in the Z direction.
(Depending on how close of far the shadow casting building is, you may set values of, e.g., 100, 125, 200, 250, 500 which will need to be resized in GDL 10x, 8x, 5x, 4x, 2x, respectively, as seen in later steps.)
But this is something that I can work with to capture that geometry.
Last edited by LaszloNagy on Wed Apr 22, 2015 10:56 am, edited 1 time in total.
Laszlo Nagy, Moderator, Site Admin
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