Changeset 2046 for trunk/MagicSoft/Simulation/Detector/ReflectorII/Changelog

Timestamp:

04/29/03 23:47:38 (22 years ago)

Author:

moralejo

Message:

*** empty log message ***

File:

• trunk/MagicSoft/Simulation/Detector/ReflectorII/Changelog (modified) (1 diff)

trunk/MagicSoft/Simulation/Detector/ReflectorII/Changelog

@@ -1 +1 @@
 ** Add changes at the beginning! **
+
+29/04/2003 A. Moralejo
+
+ph2cph.c:
+Changed determination of which mirror element is hit. Before there was a 
+problem when going to very large distances from the mirror center, sometimes
+a wrong mirror was chosen, which was actually further away from the impact 
+point than the mirror size, and therefore the photon was discarded later as
+"not hitting any mirror". Now we measure the distance on the paraboloid. The 
+new code is:
+
+  /*  calculate the mirror to be used */ 
+
+  distmirr = 1000000.0f;
+        
+  for (i=0; i<ct_NMirrors && distmirr>=ct_RMirror; ++i) {
+    distmirr2 = (float) sqrt(SQR(ct_data[i].sx - sx) +
+                             SQR(ct_data[i].sy - sy));
+
+    if (distmirr2 < distmirr) {
+      i_mirror = i;
+      distmirr  = distmirr2;
+    }
+  }
+
+geometry.c:
+Small change in calculation of ct_nax_radius (introduced fabs, but nothing 
+changes)
 
 16/04/2003 A. Moralejo