Changeset 14670 for trunk/ppSim/src/ppSimInsertGalaxies.c

Timestamp:

Aug 27, 2007, 9:25:01 AM (19 years ago)

Author:

eugene

Message:

added sample code for galaxy convolution

File:

• trunk/ppSim/src/ppSimInsertGalaxies.c (modified) (1 diff)

trunk/ppSim/src/ppSimInsertGalaxies.c

@@ -137 +137 @@
         // XXX add the sources to a source array
 
+# if (0)        
+        if (CONVOLVED_FIT) {
+
+            // select the PSF (XXX : move out of loop)
+            pmPSF *psfModel = psMetadataLookupPtr (&mdok, chip->analysis, "PSPHOT.PSF");
+            assert (psf);
+            
+            // supply the psf to the source (normalized?)
+            source->modelPSF = pmModelFromPSFforXY (psfModel, xChip, yChip, 1.0);
+
+            // instantiate the psf flux
+            pmSourceCachePSF (source, maskVal);
+
+            // convert the cached cached psf model for this source to a psKernel
+            // XXX for the moment, hard-wire the kernel to be 5x5 (2 pix radius)
+            // XXX for the moment, hard-wire the kernel to be 9x9 (4 pix radius)
+            psKernel *psf = psphotKernelFromPSF (source, psfSize);
+
+            // instantiate the source model flux
+            // XXX this may need to handle the offset?
+            pmSourceCacheModel (source, maskVal);
+
+            // make a storage buffer for the output image
+            psImage *buffer = psImageCopy (source->modelFlux, PS_TYPE_F32);
+
+            // convolve the psf image with the model image
+            psImageConvolveDirect (buffer, source->modelFlux, psf);
+
+            // save the result back in the source
+            psFree (source->modelFlux);
+            source->modelFlux = buffer;
+        }
+# endif
+
         // insert the source flux in the image
         pmSourceAddWithOffset (source, PM_MODEL_OP_FULL, 0xff, dX, dY);