rock wall/gabion - continious corner detail (click on image to se larger version)
materials wrapping corners correctly is not so easy in Microstation. I have used the "place point or stream
curve"-tool to draw a b-spline outline in top view of a block in my test, and the courners are
slightly rounded. Using B-splines allowes the texture to continue
around the courners when using parametric mapping mode. I've made the
one to the left in my testrendering with displacement, and the one to
the right with bump only. Bump only is of course much faster, and
should be the preferred method in most cases.
The problem is of course the top surface, or more precisely the edge surrounding the top surface. In this test the
block is an open element - so it will only work if the top is not
exposed to the camera. I can easily make the surface into a solid, but
the material will not wrap correctly around this corner. I'm really not
sure how to make this work without having access to a true parametric 3d
Variation can easily be created by:
1) mirroring/ rotating of the material or projection of each block, or
2) copy the material and make x/y offsets to the pattern maps.