Added EXIF metadata.

Signed-off-by: Mark Hale <mark.hale@physics.org>
Former-commit-id: 917c6a7973

contrib/blender/odm_photo.py

@@ -1,6 +1,7 @@
 #!/usr/bin/env python
 
 # Renders a photo.
+# ExifTool must be on your PATH.
 # To generate a 360 panoramic photo:
 # blender -b photo_360.blend --python odm_photo.py -- <project-path>
 # To generate a 360 3D panoramic photo:
@@ -10,6 +11,7 @@
 import sys
 import bpy
 import materials_utils
+import subprocess
 
 surfaceShaderType = 'ShaderNodeEmission'
 surfaceShaderName = 'Emission'
@@ -26,7 +28,7 @@ def main():
 
     bpy.ops.import_scene.obj(filepath=projectHome +
                              '/odm_texturing/odm_textured_model_geo.obj',
-                             axis_forward='Y', axis_up='-Z')
+                             axis_forward='Y', axis_up='Z')
 
     bpy.ops.xps_tools.convert_to_cycles_all()
 
@@ -48,7 +50,7 @@ def main():
         minZ = min(z, minZ)
         maxZ = max(z, maxZ)
 
-    model.location[2] += minZ
+    model.location[2] += (maxZ - minZ)/2
 
     for m in bpy.data.materials:
         nt = m.node_tree
@@ -61,10 +63,41 @@ def main():
                      nt.nodes['Diffuse Texture'].outputs[0])
 
     blendName = bpy.path.display_name_from_filepath(bpy.data.filepath)
-    bpy.data.scenes['Scene'].render.filepath = projectHome +
-    '/odm_photo/odm_' + blendName + '.jpg'
+    fileName = projectHome + '/odm_photo/odm_' + blendName
+    render = bpy.data.scenes[0].render
+    render.filepath = fileName
     bpy.ops.render.render(write_still=True)
 
+    width = render.resolution_x
+    height = render.resolution_y
+    if(render.use_multiview):
+        writeExif(fileName+render.views[0].file_suffix+'.jpg', width, height)
+        writeExif(fileName+render.views[1].file_suffix+'.jpg', width, height)
+    else:
+        writeExif(fileName+'.jpg', width, height)
+
+
+def writeExif(fileName, width, height):
+    w = str(width)
+    h = str(height)
+
+    subprocess.run(['exiftool',
+                    '-overwrite_original',
+                    '-CroppedAreaImageWidthPixels=' + w,
+                    '-CroppedAreaImageHeightPixels=' + h,
+                    '-FullPanoWidthPixels=' + w,
+                    '-FullPanoHeightPixels=' + h,
+                    '-CroppedAreaLeftPixels=0',
+                    '-CroppedAreaTopPixels=0',
+                    '-ProjectionType=equirectangular',
+                    '-UsePanoramaViewer=True',
+                    '-PoseHeadingDegrees=0',
+                    '-LargestValidInteriorRectLeft=0',
+                    '-LargestValidInteriorRectTop=0',
+                    '-LargestValidInteriorRectWidth=' + w,
+                    '-LargestValidInteriorRectHeight=' + h,
+                    fileName])
+
 
 if __name__ == '__main__':
     main()