Changeset 35648

Timestamp:

Jun 11, 2013, 9:25:27 AM (13 years ago)

Author:

eugene

Message:

add some comments

File:

• branches/eam_branches/ipp-20130509/psModules/src/astrom/pmAstrometryUtils.c (modified) (1 diff)

branches/eam_branches/ipp-20130509/psModules/src/astrom/pmAstrometryUtils.c

@@ -78 +78 @@
             Alpha->data.F32[1][1] = psPolynomial2DEval (YdY, Xo, Yo);
 
+            // Beta = (-L,-M) for the current guess
             Beta->data.F32[0] = -1.0 * psPolynomial2DEval (trans->x, Xo, Yo);
             Beta->data.F32[1] = -1.0 * psPolynomial2DEval (trans->y, Xo, Yo);
-
+            // fprintf (stderr, " Beta: %f %f\n", Beta->data.F32[0], Beta->data.F32[1]);
+
+            // since we want (L,M) = (0,0), Beta is also the offset
             if (!psMatrixGJSolve (Alpha, Beta)) {
                 psError(PS_ERR_UNKNOWN, false, "Unable to solve for center.");