Under File there are four items. They
are mainly designed for carrying out operations related to files.
These four items are
Exit. Of these four,
Save have sub-items for a user
to indicate whether a surface, a scene or a color scheme should be loaded
- New Scene erases all existing
surfaces and provides the user with an empty scene. This is
the item to use if you want to "forget" every bit of your work.
- Exit exits the system.
- Load has seven sub-items:
Using Import Surfaces,
Load Surfaces and
will cause a dialog box to appear as follows:
- Import Surface
loads a surface saved previously back into the scene.
This surface is added into the current
scene. More precisely, the drawing canvas will include
all existing surfaces and the newly loaded one.
- Load Surfaces
clears the current scene and loads a surface saved
previously back into the scene.
- Load Scene loads
a scene saved previously and replaces the current one.
Note that a scene can have more than one surfaces;
however, when a scene containing only one surface is loaded,
it is equivalent to loading a surface.
The difference between
Load Surfaces and
Load Scene is that the former
does not reset the geometric transformations applied to the
surfaces, while the latter does. More precisely, the system
keeps track geometric transformations applied to the surfaces
on the drawing canvas. If the former is used, these
transformations will be applied to the newly loaded surfaces.
If the latter is used, the system will clear all
transformations. As a result, the former will transform
the newly loaded surfaces, while the latter will not.
- Load Default Scene One
loads in the first default scene and replaces the current
scene. The first default scene contains only one surface
as shown below.
- Load Default Scene Two
loads in the second default scene and replaces the current
scene. The second default scene contains only one surface
as shown below.
- Load Color Scheme
loads in the color scheme saved in resource file
changes the colors of objects according to the
descriptions in this file.
- Load Default Color Scheme
loads in the default color scheme and changes the colors
of objects accordingly.
Type in the file name you wish to load followed by clicking on
OK. If the file name field
is blank, the default name surface.dat will be used.
- Save has three sub-items:
Selecting Save Scene and
Save Current Surface will
causes a dialog window to appear as follows:
- Save Current Surface
saves the definition of the current surface to a file.
The ID of the current surface is shown in the
upper-right corner of the draw canvas.
- Save Scene
saves the scene into a file. This file will include
all surfaces, including their subdivisions,
currently shown on the drawing canvas.
- Selecting Save Color Scheme
will save the color scheme being used to the resource
Saving color scheme can also be performed in the
Control Panel Window.
Typing in a file name followed by clicking on
OK will save the
definition of the current surface or the scene to the
named file. The default name is
surface.dat if the
file name field is blank. This file is always in your
current directory. As a result, if a scene is saved to a
different directory, a proper pathname must be given.
Special note to Windows 95/98/NT users:
File, followed by
Load, followed by
Load Cross-Sectional Design
to load the surface designed under the curve subsystem.