Change rendering output style, allow series of png files to be rendered.

bemani/format/afp/render.py

@@ -253,10 +253,10 @@ class AFPRenderer(VerboseOutput):
         else:
             raise Exception(f"Failed to process tag: {tag}")
 
-    def __render_object(self, img: Image.Image, tag: AP2PlaceObjectTag, parent_transform: Matrix, parent_origin: Point) -> Image.Image:
+    def __render_object(self, img: Image.Image, tag: AP2PlaceObjectTag, parent_transform: Matrix, parent_origin: Point) -> None:
         if tag.source_tag_id is None:
             self.vprint("    Nothing to render!")
-            return img
+            return
 
         # Look up the affine transformation matrix and rotation/origin.
         transform = parent_transform.multiply(tag.transform or Matrix.identity())
@@ -272,13 +272,13 @@ class AFPRenderer(VerboseOutput):
             for obj in self.__placed_objects:
                 if obj.parent_clip == tag.source_tag_id:
                     self.vprint(f"    Rendering placed object ID {obj.object_id} from sprite {obj.parent_clip} onto Depth {obj.depth}")
-                    img = self.__render_object(img, obj.tag, transform, origin)
+                    self.__render_object(img, obj.tag, transform, origin)
                     found_one = True
 
             if not found_one:
                 raise Exception(f"Couldn't find parent clip {obj.parent_clip} to render animation out of!")
 
-            return img
+            return
 
         # This is a shape draw reference.
         shape = self.__registered_shapes[tag.source_tag_id]
@@ -291,7 +291,7 @@ class AFPRenderer(VerboseOutput):
         for params in shape.draw_params:
             if not (params.flags & 0x1):
                 # Not instantiable, don't render.
-                return img
+                return
 
             if params.flags & 0x8:
                 # TODO: Need to support blending and UV coordinate colors here.
@@ -365,11 +365,8 @@ class AFPRenderer(VerboseOutput):
                             texoff = texx + (texy * texture.width)
                             imgmap[imgoff] = self.__blend(imgmap[imgoff], texmap[texoff], mult_color, add_color)
 
-                    img = Image.new("RGBA", (img.width, img.height))
                     img.putdata(imgmap)
 
-        return img
-
     def __blend(
         self,
         bg: Tuple[int, int, int, int],
@@ -459,7 +456,7 @@ class AFPRenderer(VerboseOutput):
                         continue
 
                     self.vprint(f"  Rendering placed object ID {obj.object_id} from sprite {obj.parent_clip} onto Depth {obj.depth}")
-                    curimage = self.__render_object(curimage, obj.tag, Matrix.identity(), Point.identity())
+                    self.__render_object(curimage, obj.tag, Matrix.identity(), Point.identity())
             else:
                 # Nothing changed, make a copy of the previous render.
                 self.vprint("  Using previous frame render")

bemani/utils/afputils.py

@@ -159,7 +159,7 @@ def main() -> int:
         metavar="IMAGE",
         type=str,
         default="out.gif",
-        help='The output file (ending either in .gif or .webp) where the render should be saved.',
+        help='The output file (ending either in .gif, .webp or .png) where the render should be saved.',
     )
     render_parser.add_argument(
         "-v",
@@ -558,11 +558,40 @@ def main() -> int:
                 continue
 
         if args.action == "render":
+            # Render the gif/webp frames.
             duration, images = renderer.render_path(args.path, verbose=args.verbose)
             if len(images) == 0:
                 raise Exception("Did not render any frames!")
-            images[0].save(args.output, save_all=True, append_images=images[1:], loop=0, duration=duration)
+
+            # Write them out to a new file.
+            if args.output.lower().endswith(".gif"):
+                fmt = "GIF"
+            elif args.output.lower().endswith(".webp"):
+                fmt = "WEBP"
+            elif args.output.lower().endswith(".png"):
+                fmt = "PNG"
+            else:
+                raise Exception("Unrecognized file extension for output!")
+
+            if fmt in ["GIF", "WEBP"]:
+                # Write all the frames out in one file.
+                with open(args.output, "wb") as bfp:
+                    images[0].save(bfp, format=fmt, save_all=True, append_images=images[1:], duration=[duration] * len(images))
+
                 print(f"Wrote animation to {args.output}")
+            else:
+                # Write all the frames out in individual_files.
+                filename = args.output[:-4]
+                ext = args.output[-4:]
+
+                for i, img in enumerate(images):
+                    fullname = f"{filename}-{i}{ext}"
+
+                    with open(fullname, "wb") as bfp:
+                        img.save(bfp, format=fmt)
+
+                    print(f"Wrote animation frame to {fullname}")
+
         elif args.action == "list":
             paths = renderer.list_paths(verbose=args.verbose)
             for path in paths: