| | Describes how to construct the following elementary transformations
- translations,
- rotations,
- symmetries,
- scales.
The Transformation class can also be used to
construct complex transformations by combining these
elementary transformations.
However, these transformations can never change
the type of an object. For example, the projection
transformation can change a circle into an ellipse, and
therefore change the real type of the object. Such a
transformation is forbidden in this environment and
cannot be a Geom_Transformation.
The transformation can be represented as follow :
V1 V2 V3 T
| a11 a12 a13 a14 | | x | | x'|
| a21 a22 a23 a24 | | y | | y'|
| a31 a32 a33 a34 | | z | = | z'|
| 0 0 0 1 | | 1 | | 1 |
More...
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1.6.3