Visualization of Historic Landscapes - Google SketchUp Workshop: Modeling, Visualizing, and Illustrating - page 280

frames. Care should be taken to accurately position the guides. Zooming
in with the scroll wheel can help to increase accuracy. Avoid using the
ground plane, which is frequently off-axis.

3. Finally, scale the drawing. In the case of historical photographs, you may

need to use some common sense and logic to make an educated guess
on the scale. Scaling is done by dragging the blue axis up and down or by
typing a value in the Match Photo Spacing dialog box.

Once the axis and scale are set for use in Match Photo, the basic cubic form of
the building can be modeled with the L using the red, green, and blue axes
for proper alignment. Right-clicking on the faces of the building will allow you
to Project Photo to each applicable surface. Once the photo is applied as a
texture, the size of the building can be adjusted and the gable of the roof can
be drawn.

FiG 16.1

Step 2: Combining the Model with Historical Maps

Goal : To integrate scaled map and model into Google Earth terrain.
Inputs : Photograph-textured building and 1899 insurance map.
Tool : SketchUp.

The seamless integration of SketchUp and Google Earth allows you to quickly
and easily geolocate and import terrain data for models. With contemporary
buildings, it is quite easy to locate the building site in Google Earth, zoom-in
to a convenient scale, import the data, and fine-tune the location of the build-
ing to match the Google Earth imagery.

In the case of Byng Inlet, the Google Earth imagery did not show where the
historic buildings were located. Further research and intermediary steps were
required to locate the photo-matched buildings. A lengthy search of the
Internet succeeded in locating an 1899 insurance map of the area, compiled