[multiview] add Graph Modification and convert inputFolder into a list of input files

* Always set a list of input files
* Use GraphModification to do only one update

meshroom/multiview.py

@@ -1,16 +1,32 @@
 import os
+import fnmatch
+import re
 
-from .core.graph import Graph
+from .core.graph import Graph, GraphModification
 
 
-def photogrammetryPipeline(output, inputFolder='', inputImages=[], inputViewpoints=[]):
+def findFiles(folder, patterns):
+    rules = [re.compile(fnmatch.translate(pattern), re.IGNORECASE) for pattern in patterns]
+    outFiles = []
+    for name in os.listdir(folder):
+        for rule in rules:
+            if rule.match(name):
+                filepath = os.path.join(folder, name)
+                outFiles.append(filepath)
+                break
+    return outFiles
+
+
+def photogrammetryPipeline(output='', inputFolder='', inputImages=[], inputViewpoints=[]):
     # type: () -> Graph
     graph = Graph('pipeline')
+    with GraphModification(graph):
         cameraInit = graph.addNewNode('CameraInit')
         if inputFolder:
-        cameraInit.imageDirectory.value = inputFolder
+            images = findFiles(inputFolder, ['*.jpg', '*.png'])
+            cameraInit.viewpoints.extend([{'image': image} for image in images])
         if inputImages:
-        cameraInit.viewpoints.value = [{'image': image, 'focal': -1} for image in inputImages]
+            cameraInit.viewpoints.extend([{'image': image} for image in inputImages])
         if inputViewpoints:
             cameraInit.viewpoints.extend(inputViewpoints)
         featureExtraction = graph.addNewNode('FeatureExtraction',