refactoring (#27)

* refactoring
* error if no gas or stars were provided

bin/fresco.py

@@ -6,6 +6,7 @@
 lines.
 """
 
+import sys
 import os
 import argparse
 
@@ -165,16 +166,16 @@ def fresco_argument_parser(parser=None):
         help=(
             "PSF type. Looks for a .fits file of the given name, uses this if "
             "it exists.\n"
-            'Otherwise, "hubble", "wfc3", "wfpc2" and "gaussian" are valid '
-            "options."
+            "Otherwise, 'hubble', 'wfc3', 'wfpc2', 'gaussian' and a local PSF file "
+            "are valid options."
         ),
     )
     parser.add_argument(
         "--sigma",
         dest="psf_sigma",
         default=1.0,
         type=float,
-        help="PSF sigma (if PSF type is gaussian)",
+        help="PSF sigma (only used if PSF type is gaussian)",
     )
     parser.add_argument(
         "--fl",
@@ -257,7 +258,7 @@ def main():
         psf_type = psf_type.lower()
         if psf_type not in ["hubble", "gaussian"]:
             print(f"Invalid PSF type or file does not exist: {psf_type}")
-            exit()
+            sys.exit()
     psf_sigma = args.psf_sigma
     age = args.age
     image_width = args.width
@@ -272,6 +273,22 @@ def main():
     z_offset = args.z_offset
     extinction = args.calculate_extinction
 
+    # sanity check
+    if starsfilename is None:
+        nostars = True
+    elif not os.path.exists(starsfilename):
+        nostars = True
+    else:
+        nostars = False
+    if gasfilename is None:
+        nogas = True
+    elif not os.path.exists(gasfilename):
+        nogas = True
+    else:
+        nogas = False
+    if nostars and nogas:
+        raise FileNotFoundError("Need at least one of a stars or gas file")
+
     # Derived settings
 
     image_size = [pixels, pixels]

setup.py

@@ -11,7 +11,7 @@
 
 install_requires = [
     "wheel>=0.32",
-    "amuse-framework>=2022.6.0",
+    "amuse-framework>=2024.4.0",
     "scipy",
     "matplotlib",
     "astropy",
@@ -47,6 +47,7 @@
     "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
+    "Programming Language :: Python :: 3.11",
     "Topic :: Scientific/Engineering :: Astronomy",
 ]
 
@@ -73,7 +74,7 @@
     classifiers=classifiers,
     url=url,
     project_urls={
-        "Bug Tracker": "https://github.com/rieder/fresco/issues",
+        "Bug Tracker": "https://github.com/rieder/amuse-fresco/issues",
     },
     author_email=author_email,
     author=author,

src/amuse/plot/fresco/fieldstars.py

@@ -1,16 +1,11 @@
-# -*- coding: utf-8 -*-
-from __future__ import (
-    print_function,
-    division,
-)
 import numpy as np
 from amuse.datamodel import Particles
 from amuse.units import units
 from amuse.ic.salpeter import new_salpeter_mass_distribution
 
 
 def new_field_stars(
-    N,
+    number_of_stars,
     width=10 | units.parsec,
     height=10 | units.parsec,
     depth=100 | units.parsec,
@@ -19,11 +14,11 @@ def new_field_stars(
     seed=1701,
 ):
     np.random.seed(seed)
-    stars = Particles(N)
-    stars.x = (np.random.random(N) - 0.5) * width
-    stars.y = (np.random.random(N) - 0.5) * height
-    stars.z = (np.random.random(N) - 0.02) * depth
+    stars = Particles(number_of_stars)
+    stars.x = (np.random.random(number_of_stars) - 0.5) * width
+    stars.y = (np.random.random(number_of_stars) - 0.5) * height
+    stars.z = (np.random.random(number_of_stars) - 0.02) * depth
     if massdistribution == "salpeter":
-        stars.mass = new_salpeter_mass_distribution(N)
+        stars.mass = new_salpeter_mass_distribution(number_of_stars)
 
     return stars

src/amuse/plot/fresco/ubvi.py

@@ -135,7 +135,6 @@ def rgb_frame(
     verbose=False,
     visualisation_mode="visual",
 ):
-
     if gas is None:
         gas = Particles()