Detailed imp-style sprites for all 30 creatures in the high-res style; sprite texture in bands

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>

art/generated/sprites/scripts/compose.py

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+# compose.py out.png  raw:rows:rowcounts:index[:m[:scale]] ...   - cut chosen figures out of raw sheets and
+# set them in one row on flat magenta (feet on one line, wide gaps), for pixelize_sprite.py --views N
+import sys
+sys.path.insert(0, "/home/zink/Projects/dungeoncraft/tools")
+import pixelize_sprite as ps
+from PIL import Image, ImageOps
+out = sys.argv[1]; figs = []
+for spec in sys.argv[2:]:
+    parts = spec.split(":")
+    raw, rows, rc, idx = parts[0], int(parts[1]), [int(v) for v in parts[2].split(",")], int(parts[3])
+    img = Image.open(raw).convert("RGB")
+    mask, boxes = ps.figure_boxes(img, rows, max(rc), "auto", "auto", rc)
+    x0, y0, x1, y1 = boxes[idx]
+    rgba = img.crop((x0, y0, x1, y1)).convert("RGBA")
+    # background pixels transparent so they become pure magenta on the new sheet
+    a = Image.new("L", rgba.size, 0)
+    a.putdata([255 if mask[y][x] else 0 for y in range(y0, y1) for x in range(x0, x1)])
+    rgba.putalpha(a)
+    if len(parts) > 4 and parts[4] == "m":
+        rgba = ImageOps.mirror(rgba)
+    if len(parts) > 5:
+        k = float(parts[5])
+        rgba = rgba.resize((round(rgba.width * k), round(rgba.height * k)), Image.NEAREST)
+    figs.append(rgba)
+gap = 120
+W = sum(f.width for f in figs) + gap * (len(figs) + 1); H = max(f.height for f in figs) + 2 * gap
+sheet = Image.new("RGBA", (W, H), (255, 0, 255, 255)); x = gap
+for f in figs:
+    sheet.alpha_composite(f, (x, H - gap - f.height)); x += f.width + gap
+sheet.convert("RGB").save(out); print(out, sheet.size)