Graphics Programs Reference
In-Depth Information
New Approaches
In this model, certain elements were built in free space - something that is not
the usual approach in SketchUp. It was necessary to fake a feature that exists
in almost all other modeling programs: working planes. These are virtual
surfaces - normally defined by three coplanar points - that allow you to draw
in “midair.” Normally, in SketchUp, you can only draw upon already existing
surfaces, so the approach here was to draw some simple faces and then move
and rotate them until they were in the correct position. They would then act
as virtual “drawing boards” on which most of the main structure could be
drawn in situ. Drawing these main structural elements orthogonal to the X,
Y, and Z axes and trying subsequently to rotate them into place would have
been a recipe for disaster.
Tip
Although SketchUp Pro was used for this project, all the modeling can just
as easily be done with the free Google SketchUp version.
Stage 1: Preparing a 1:1 Scale Plan
Objectives : To bring together all the photographs, plans, sections, and
axonometrics from various sources (by downloading, scanning, etc.) and
ensure that the imported plan and section are at 1:1 scale.
Data : JPEG images.
Tool : SketchUp Pro.
After the two JPEG scans of the plan and the section were imported, the
first problem was one of scale: They both needed to be at 1:1, since a lot
of the modeling was going to be eyeballed and having everything at true
scale meant there would be one thing less to worry about. Once the plan
FiG 12.1 The Rescale dialog box.
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