Enable transforming a frame to use only relative paths

tools/noramlizeFrame.py

@@ -0,0 +1,62 @@
+import os
+import json
+import shutil
+import sys
+
+def scriptRelative(*paths):
+    scriptdir = os.path.dirname(os.path.realpath(sys.argv[0]))
+    result = os.path.join(scriptdir, *paths)
+    result = os.path.realpath(result)
+    result = os.path.normcase(result)
+    return result
+
+
+
+class FrameProcessor:
+    def __init__(self, filename):
+        self.filename = filename
+        dir, name = os.path.split(self.filename)
+        self.dir = dir
+        self.ktxDir = os.path.join(self.dir, 'ktx')
+        os.makedirs(self.ktxDir, exist_ok=True)
+        self.resDir = scriptRelative("../interface/resources")
+
+        if (name.endswith(".json")):
+            self.name = name[0:-5]
+        else:
+            self.name = name
+            self.filename = self.filename + '.json'
+
+        with open(self.filename, 'r') as f:
+            self.json = json.load(f)
+
+
+    def processKtx(self, texture):
+        if texture is None: return
+        if not 'ktxFile' in texture: return
+        sourceKtx = texture['ktxFile']
+        if sourceKtx.startswith(':'):
+            sourceKtx = sourceKtx[1:]
+            while sourceKtx.startswith('/'):
+                sourceKtx = sourceKtx[1:]
+            sourceKtx = os.path.join(self.resDir, sourceKtx)
+        sourceKtxDir, sourceKtxName = os.path.split(sourceKtx)
+        destKtx = os.path.join(self.ktxDir, sourceKtxName)
+        if not os.path.isfile(destKtx):
+            shutil.copy(sourceKtx, destKtx)
+        newValue = 'ktx/' + sourceKtxName
+        texture['ktxFile'] = newValue
+        
+
+    def process(self):
+        for texture in self.json['textures']:
+            self.processKtx(texture)
+
+        with open(self.filename, 'w') as f:
+            json.dump(self.json, f, indent=2)
+
+fp = FrameProcessor("D:/Frames/20190114_1629.json")
+fp.process()
+
+
+#C:\Users\bdavi\git\hifi\interface\resources\meshes