| 144 |
|
That is, with the thumb of the right hand pointing in the direction |
| 145 |
|
of the axis, rotation follows the curl of the fingers. |
| 146 |
|
|
| 147 |
< |
The transform command itself is also cumulative, and a transform |
| 148 |
< |
command with no arguments is used to return to the previous |
| 149 |
< |
condition. It is necessary that transforms and their end statements |
| 150 |
< |
("xf" by itself) be balanced in a file, so that later or enclosing |
| 151 |
< |
files are not affected. |
| 147 |
> |
The transform command itself is also cumulative, but in the reverse |
| 148 |
> |
order. That is, later transformations (i.e. enclosed transformations) |
| 149 |
> |
are prepended to existing (i.e. enclosing) ones. A transform command |
| 150 |
> |
with no arguments is used to return to the previous condition. It is |
| 151 |
> |
necessary that transforms and their end statements ("xf" by itself) be |
| 152 |
> |
balanced in a file, so that later or enclosing files are not affected. |
| 153 |
|
|
| 154 |
|
Transformations apply only to geometric types, e.g. polygons, spheres, etc. |
| 155 |
|
Vertices and the components that go into geometry are not directly affected. |
