initial texture source and a script to crop it

krita_save_cube_sides.py

@@ -0,0 +1,35 @@
+# crop 3x3 image into 6: corner, center, and 4 directions (only top-left corner is used)
+
+import os
+print(os.getcwd())
+
+import krita
+currentDocument = Krita.instance().activeDocument()
+import os.path
+filepath = currentDocument.fileName()
+filename = os.path.splitext(os.path.basename(filepath))[0]
+dir = os.path.dirname(filepath)
+
+print(dir)
+currentDocument.setBatchmode(True)
+s = 16
+corners = [
+         [0,0], [s,0],
+         [0,s], [s, s], [s*2, s],
+         [s, s*2],
+      ]
+for i,c in enumerate(corners):
+    clone = currentDocument.clone()
+    print(c[0], c[1])
+    clone.crop(c[0], c[1], s, s)
+    exportParameters =krita.InfoObject()
+    exportParameters.setProperty("alpha", True)
+    exportParameters.setProperty("compression", 6) # 0-9
+    exportParameters.setProperty("indexed", False)
+    res = clone.exportImage(os.path.join(dir, f"{filename}_side{i}.png"), exportParameters)
+    clone.close()
+    print(res)
+    if not res:
+        break
+    
+currentDocument.setBatchmode(False)