Exercise 2: Importing A Google Earth Image - Autodesk CIVIL3D - CIVILDESIGNCOMP 2007 SLM CD Tutorials Manual

check box turns the polygon off, which prevents it from being imported
back into AutoCAD Civil 3D.
NOTE If Google Earth zooms past the polygon, expand the Temporary Places
Aerial Mapping_NH83F
Polyline to zoom to the extents of the polyline.
To continue this tutorial, go to
(page 121).

Exercise 2: Importing a Google Earth Image

In this exercise, you will import an aerial image from Google Earth into
AutoCAD Civil 3D.
To provide a useful source image, Google Earth must display the image from
directly above. If the image is tilted, it will still be captured by AutoCAD Civil
3D. However, it will not be a useful representation of the surface when it is
converted to a render material.
When the Google Earth image is imported into AutoCAD Civil 3D, it appears
in the drawing as a gray scale image object. The image is scaled by both the
linear units in the drawing and the extents of the latitude/longitude of the
image. The image aspect ratio matches that of the image displayed in the
Google Earth window. AutoCAD Civil 3D automatically generates a name for
the image, using the first three letters of the drawing file name and a unique
ID number. The image is saved in the same directory as the drawing file.
When the image is draped on the surface, a new render material is created
from the image, and the render material is applied to the surface. If the image
is larger than the surface, the image is clipped to the extents of the surface
object. If multiple, smaller images are needed to cover a surface, you must
combine them into a single image.
TIP If you do not want to get your surface image from Google Earth, you can use
Autodesk Raster Design to prepare images from other sources. Using Raster Design,
you can
combine multiple images into a single image.
convert images to a format (such as BMP, DIB, GIF, JPG, PCX, PNG, RLE,
TGA, or TIF) that is suitable for use as a render material.
orient and scale an image appropriately for a drawing.
Model Polyline collection. Double-click
Exercise 2: Importing a Google Earth Image
Exercise 2: Importing a Google Earth Image | 121