[ Identification | Description | Input parameters | Links ]

The Union_init Component

Deprecated no-op placeholder, kept for backward compatibility.

Identification

• Author: Mads Bertelsen
• Origin: ESS DMSC
• Date: 20.08.15

Description

Part of the Union components, a set of components that work together and thus
sperates geometry and physics within McStas.

This component used to be required as the FIRST Union component. It defined
the shared library (union-lib.c) and owned the shared global lists, which the
other Union components reached via COMP_GETPAR3.

That is no longer needed: every Union component loads the Union library
(union-lib) itself, and the library owns the shared lists. The Union_init
and Union_stop components are therefore optional.

This definition is kept only so that existing instruments that still place a
Union_init component continue to compile. It emits a deprecation warning
and has no effect.

Input parameters

Parameters in boldface are required; the others are optional.

Name

Unit

Description

Default

AT (	,	,		) RELATIVE		Generate to clipboard
ROTATED (	,	,		) RELATIVE

Links

• Source code for Union_init.comp.
• ******************************************************************************/

---

[ Identification | Description | Examples | Input parameters | Links ]

Generated on mcstas 3.9.2

---

Last Modified: Tuesday, 06-Oct-2026 21:19:12 CEST