# Text Modify

- Contents
- Position
- View

Change here the position and orientation for a single text or a list of texts.

To modify a text, click over its graphic image, or write its id on the Plane entry. To modify a list of texts, press the button List (after creating the list of texts with Text->Select). Parameters for empty entries or Local choices remain unchanged.

To change a text name write the new name in the Text entry, followed by the text number (GAMGI needs the number to identify the text). To change the name for a list of texts, press List first and then write the new common name in the Name entry.

### Translation

The origin of a text object, defined as its top left corner, can be changed using the X, Y, Z entries. The change can be Absolute or Relative (to the former origin).

### Rotation

The orientation of a text object, defined by the Euler angles theta, phi, psi, can be changed using the E1, E2, E3 entries. The change can be Absolute or Relative (to the former Euler angles). Euler angles are not addictive, so the text must be rotated back with the old angles and forward with the new ones.

Euler angles in GAMGI are defined as follows: first, the (x, y, z) referential is rotated theta degrees (between 0 and 180) around the y axis, then the referential is rotated phi degrees (between 0 and 360) around the initial z axis, and finally it is rotated psi degrees (between 0 and 360) around the new z axis, always in the direct, counter-clockwise, direction. If the first Euler angle (theta) is zero, the old and new z axis coincide, thus (0, 0, 10) and (0, 5, 5) represent the same rotation.

By default text objects are on a plane parallel to the screen, corresponding to Euler angles (0, 0, 0). For this orientation, Wired (stroked) text objects, and Solid (extruded) text objects in a layer with an orthographic projection, will look exactly as normal 2D text messages.
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