Command: (load "main")

(This function should load the AutoGrammar
menu.)

From the command promp line, type:

Command: grid
Specify grid spacing[ON/OFF]<1>: 10

Click on the Draw menu on the menu bar and
choose Solids and then Box. At the prompt...

...click on any point on the screen. Then, type the
following always followed by enter at the next
promts:

You should see a box on the screen now.

3.2. Insert Registration Mark

From the AutoGrammar menu, choose Insert
Registration Mark.

Use this command to insert an axis tripod in the
shape to which you want to apply a transformation.
This shape can be a single object (like a line, a
point, a solid, etc.), or a group of objects.

The Insert Registration Mark dialogue box has a field
for entering the Length, in drawing units, for the
arms of the tripod. Enter a number big enough to
be seen, but small enough to fit inside the shapes
(e.g. 4).

It is better to apply the tripod to the corner of the
object coincident with the label chosen during the
labeling studies in 3dShaper, but avoiding
superposing it with the object's own lines, for
clarity.

Click OK and then pick a point to insert the
egistration Mark, or just place it anywhere and
move it later to the right place with the MOVE
command (which can be typed in or found under
the Modify menu).

After inserting the Registration Mark to the shape,
copy both to the side, using the AutoCad command
COPY (which can be typed in or found under the
Modify menu).

From the View menu, choose Shade, then
Flat Shaded, edges On, and check if your cubes
intersect each other. Go back to the wireframe
view by clicking on the View menu again and
choosing Shade, then 2DWireframe.

3.3. One Shape Rule

In the dialog box, check the radio buttons for
Explode and for Graded Color. Type in 12 in the
Number of Iteractions field.

(Please not that if you check the Leave as Blocks
button you may not be able to run the program
again until you explode and purge all the blocks.)

Click on the Pick buttons and click on each shape
and registration mark. Type enter after clicking on
the shapes, which can be made of many parts.

Click on the OK button and see how AutoGrammar
repeats the original spatial relation to each block
that is added consecutively.

To better see the result, click on the View menu
and choose again Shade, then Flat Shaded, edges
On. The composition should look like the one on the
left.

Change the color of the two original blocks if
needed, by clicking on them and choosing a
different color from the Color list, under the menu
bar on the top of the screen.

In the View menu, choose 3DOrbit to examine the
composition from different viewpoints.

3.4. Two Shapes Rule

First, click below to download a drawing ready to
work on.

Open the drawing and from the AutoGrammar
menu, choose Two Shapes.

Use this command te repeat a spatial relation
between two different objects with Registration
Marks and a copy of the first one positioned to the
second according to the same spatial relation.

In the dialog box, check the radio buttons for
Explode and for Graded Color. Type in 7in the
Number of Iteractions field.

(Please not that if you check the Leave as Blocks
button you may not be able to run the program
again until you explode and purge all the blocks.)

Click on the Pick buttons and click on each shape
and registration mark. Type enter after clicking on
the shapes, which can be made of many parts.

Shape 2 and RM 2 should always be the ones in the
middle. Click on the OK button and see how
AutoGrammar repeats the original spatial relation to
each block that is added consecutively.

You should obtain 4 different results in each
computation.

3.5. Changing Shapes

We have finally arrived to the point at which
AutoGrammar starts showing some advantage
against other software to apply Shape Grmmars
rules. Here we will see how to make changes in the
shapes that make the chosen spatial relation
and labeling.

You won't need to make changes to shape 1; just
to shapes 2 and 3. But don't mode the Registration
Marks, or else the spatial relation will be changed.

Let's start by adding a flat surface to a curved one.
First, download the following files:

There are two arrangements of shapes with
registration marks, ready for applying the AutoGrammar rules. Make a closed polyline,
extrude and union it to the oblong.

Now make another on and union it to the pillar.

Apply the Two Shapes rule from the AutoGrammar
menu. Each shape now should be replaced by the new one.