Changeset 28675 for branches/eam_branches/ipp-20100621/ppSim/src/ppSimMakeGalaxies.c

Timestamp:

Jul 15, 2010, 6:29:09 AM (16 years ago)

Author:

eugene

Message:

fix sersic parameterization; allow grid to have random values; change pmSourceCopy to pmSourceCopyData

File:

• branches/eam_branches/ipp-20100621/ppSim/src/ppSimMakeGalaxies.c (modified) (5 diffs)

branches/eam_branches/ipp-20100621/ppSim/src/ppSimMakeGalaxies.c

@@ -18 +18 @@
     int galaxyGridDX      = psMetadataLookupS32(&mdok, recipe, "GALAXY.GRID.DX"); // Density of fakes
     int galaxyGridDY      = psMetadataLookupS32(&mdok, recipe, "GALAXY.GRID.DY"); // Density of fakes
+    bool galaxyGridRandom = psMetadataLookupBool(&mdok, recipe, "GALAXY.GRID.RANDOM"); // Density of fakes
     
     float galaxyRmajorMax = psMetadataLookupF32(&mdok, recipe, "GALAXY.RMAJOR.MAX"); // Density of fakes
@@ -43 +44 @@
 
     if (galaxyDensity <= 0) return true;
+
+    if (galaxyGridRandom) {
+        long A, B;
+        A = time(NULL);
+        for (B = 0; A == time(NULL); B++);
+        srand48(B);
+    }
 
     // Size of FPA
@@ -81 +89 @@
         psLogMsg("ppSim", PS_LOG_INFO, "Adding grid of %ld galaxies\n", num);
 
-        float galaxyIndexSlope = (galaxyIndexMax - galaxyIndexMin) / num;
-        float galaxyThetaSlope = (galaxyThetaMax - galaxyThetaMin) / num;
-        float galaxyARatioSlope = (galaxyARatioMax - galaxyARatioMin) / num;
-        float galaxyRmajorSlope = (galaxyRmajorMax - galaxyRmajorMin) / num;
+        float galaxyIndexSlope = (galaxyIndexMax - galaxyIndexMin);
+        float galaxyThetaSlope = (galaxyThetaMax - galaxyThetaMin);
+        float galaxyARatioSlope = (galaxyARatioMax - galaxyARatioMin);
+        float galaxyRmajorSlope = (galaxyRmajorMax - galaxyRmajorMin);
 
         int i = 0;
@@ -101 +109 @@
                 // galaxy->index = (1/2n)
 
-                float index = (galaxyIndexMin  + i * galaxyIndexSlope); // factor of 0.5 because the Sersic model creates exp(-z^n), not exp(-r^n)
+                float factor = galaxyGridRandom ? drand48() : i / num;
+                float index = (galaxyIndexMin  + factor * galaxyIndexSlope); // factor of 0.5 because the Sersic model creates exp(-z^n), not exp(-r^n)
                 galaxy->index = 0.5/index;
 
-                float scale = (galaxyRmajorMin + i * galaxyRmajorSlope);
+                factor = galaxyGridRandom ? drand48() : i / num;
+                float scale = (galaxyRmajorMin + factor * galaxyRmajorSlope);
 
                 // for a sersic model, 
@@ -114 +124 @@
 
                 galaxy->Rmaj  = scale;
-                galaxy->Rmin  = (galaxyARatioMin + i * galaxyARatioSlope) * galaxy->Rmaj;
-                galaxy->theta = (galaxyThetaMin  + i * galaxyThetaSlope);
+
+                factor = galaxyGridRandom ? drand48() : i / num;
+                galaxy->Rmin  = (galaxyARatioMin + factor * galaxyARatioSlope) * galaxy->Rmaj;
+
+                factor = galaxyGridRandom ? drand48() : i / num;
+                galaxy->theta = (galaxyThetaMin  + factor * galaxyThetaSlope);
 
                 // galaxy->peak *= Io;
 
-                fprintf (stderr, "Rmaj: %f, scale: %f, index: %f, bn: %f, Ro: %f, Io: %f\n",
-                         galaxy->Rmaj, scale, index, bn, fR, Io);
+                if (0) {
+                    fprintf (stderr, "Rmaj: %f, scale: %f, index: %f, bn: %f, Ro: %f, Io: %f\n", galaxy->Rmaj, scale, index, bn, fR, Io);
+                }
 
                 psArrayAdd (galaxies, 100, galaxy);