Update blender/README.md

blender/README.md

@@ -8,28 +8,9 @@ Script for importing in blender a motion viewed with gepetto viewer
 
 ## Exporting the scene
 
-### Export Blender script - suggested approach
 In python, run `gui.writeBlenderScript("blenderscript.py", ["node1", "node2"])`.
 
-### URDF to blender conversion
-
-Exporting from OpenSceneGraph does not always work. One can also convert URDF files to a script loadable by blender:
-`blender/urdf_to_blender.py -p prefix/ -i robot.urdf -o robot_blend.py`
-where `prefix` is the prefix you gave to Gepetto Viewer. _A trailing slash must be added_.
-
-### Robot - moving objects
-Robots have to be exported **before** applying any configuration. Right after having loaded all your models, do `gui.writeNodeFile (nodeName, filename)`
-
-### Environment - static objects
-Environment has to be exported **after** in place (having been placed correctly). Once they are at their good location, do
-`gui.writeNodeFile (nodeName, filename)`
-If you export them before placing them, you can capture them in a frame using the next method, in which case you will have
-1 differents `path.yaml` files (one with N frames for the robot and one with 1 frame for the environment).
-
-### OSG export results by file format
-- Collada: seems OK, but quality seems poor.
-- OBJ: not tested
-- Box, Cylinders and other primitives: not supported by dae and obj file format
+**Notice**: datas will be appended to `blenderscript.py` so it must be empty at the beginning. Otherwise, you will get an error when loading the file into blender.
 
 ## Recording frames
 
@@ -42,6 +23,8 @@ use `gui.captureTransformOnRefresh(True)` to start capturing and `gui.captureTra
 
 **Notice**: datas will be appended to `filename` so it must be empty at the beginning. Otherwise, you will get an error when loading the file into blender.
 
+**Notice**: The size of this file quickly increases. Have in mind that your movie will most likely be at 25 frames per second.
+
 ```python
 gui.setCaptureTransform ("path.yaml", "hrp2")
 
@@ -87,11 +70,13 @@ blender-2.75a-linux-glibc211-i686/blender $@ --python "/local/jmirabel/devel/hpp
 
 ### Load the motion
 
-- Load your object definition files of the robot and the environment.
-  * import collada or obj files from `File` menu
-  * import the script generated by `urdf_to_blender.py` by pressing `Space Bar` and searching for "Import a script generated with urdf_to_blend.py"
-- Press `Space bar` and search for "Import a YAML Gepetto Viewer path file"
-- Select the file containing the configurations and wait...
+- Import the model file (generated at step 1):
+  * Press `Space Bar` and search for "Import a URDF blender script".
+  * You can do this as many times as you want.
+- Import the motion file (generated at step 2):
+  * Press `Space bar` and search for "Import a YAML Gepetto Viewer path file"
+  * You can do this as many times as you want.
+  * This can take a while.
 
 Voilà! A set of frames should automatically be generated, resulting in an animation.