Changeset 3076 for branches/mcstas-1.x

Timestamp:

05/16/11 11:56:05 (12 months ago)

Author:

pkwi

Message:

Fixing bug in rectangular focusing routine. Previously, xi/yi/zi in a global reference frame was used locally, the patch transforms back to the local coordinate frame.

See  http://mailman.mcstas.org/pipermail/mcstas-users/2010q4/000845.html and related messages for the bug-report from Markos Skoulatos (bug was also reported by Linda Udby and Johan Jacobsen via other channels.)

Fix is applied both in 1.x branch and on trunk.

Files:

• branches/mcstas-1.x/lib/share/mcstas-r.c (modified) (1 diff)

branches/mcstas-1.x/lib/share/mcstas-r.c

@@ -4810 +4810 @@
     coords_get(tmp, &*xo, &*yo, &*zo);
 
+    /* Go back to local coordinate system */
+    tmp = coords_set(xi, yi, zi);
+    tmp = rot_apply(A, tmp);
+    coords_get(tmp, &xi, &yi, &zi);
+
     if (solid_angle) {
       /* Calculate vector from local point to remote random point */