When concept modelling you may have three orthographic
sketches that you wish to use to create a 3D model. The idea being that if you have the front
view of your part shown on the yz plane, the plan view on the xy and so on, you
can use two 2D curves shown on views normal to each other to describe a 3D
curve.
The easiest way to do this is with the Sketch Tracer
workbench to orientate the sketches, and the Freestyle workbench to create
wireframe geometry. The Sketch Tracer
workbench has superb control over the scaling and positioning of the views, and
the Freestyle workbench has a very useful push/pull control over node points on
generated wireframe and surfaces. For
those of you without these (expensive!) workbenches, there is alternative
methodology!
Creating the
reference sketches. This can be done
using the commonly available Generative Shape Design workbench! Firstly you need to create three sketches of
rectangles with the appropriate dimensions to house your model view on your
three base planes in the appropriate positions (xy - plan, yz - front, zx -
side). Fill these rectangles using the
Fill Surface tool and individually apply a material to these surfaces that is
composed of an image file. I normally
use the chessboard material from the default material library. Once you have applied the material to each
surface, find the material in the specification tree (under the node for the
surface in question) and double click.
On the texture tab, your image file can be substituted for chessboard
image, then scaled and positioned accordingly.
Just be aware that every image is imported square, so the scaling parity
will need to be broken.
Creating the wireframe
geometry. As has been suggested in
the first paragraph, you can position geometry in 3D that you can see in two 2D
views normal to each other. With the GSD
workbench, this has to be done in by joining reference geometry points with 3D
splines then modifying the point coordinates to fine tune.
Desktop
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