Optics: cache pixel-area Moffat kernels

src/frame.h

@@ -39,8 +39,10 @@ size_t frame_splat_catalog(const FrameLensMesh *mesh,
                            StarCatalog *catalog, double *hdr, int width,
                            int height, double exposure,
                            const PointSpreadFunction *psf,
+                           const PsfKernelCache *psf_cache,
                            int catalog_load_workers,
-                           CatalogPrefetchStats *prefetch_stats);
+                           CatalogPrefetchStats *prefetch_stats,
+                           PsfSplatStats *psf_stats);
 void frame_draw_mesh(const FrameLensMesh *mesh, double *hdr, int width,
                      int height, double gray, double opacity);
 void frame_lens_mesh_destroy(FrameLensMesh *mesh);