Added blender renderer

blender_render.py

@@ -0,0 +1,84 @@
+# GNU MediaGoblin -- federated, autonomous media hosting
+# Copyright (C) 2011, 2012 MediaGoblin contributors.  See AUTHORS.
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published by
+# the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <http://www.gnu.org/licenses/>.
+
+
+import bpy, json, os
+
+
+try:
+    CONFIG = json.loads(os.environ["RENDER_SETUP"])
+    MODEL_EXT = CONFIG["model_ext"]
+    MODEL_PATH = CONFIG["model_path"]
+    CAMERA_COORD = CONFIG["camera_coord"]
+    CAMERA_FOCUS = CONFIG["camera_focus"]
+    CAMERA_CLIP = CONFIG["camera_clip"]
+    CAMERA_TYPE = CONFIG["projection"]
+    CAMERA_ORTHO = CONFIG["greatest"] * 1.5
+    RENDER_WIDTH = CONFIG["width"]
+    RENDER_HEIGHT = CONFIG["height"]
+    RENDER_FILE = CONFIG["out_file"]
+except KeyError:
+    print("Failed to load RENDER_SETUP environment variable.")
+    exit(1)
+
+
+# add and setup camera
+bpy.ops.object.camera_add(view_align=False, enter_editmode=False,
+                          location = CAMERA_COORD)
+camera_ob = bpy.data.objects[0]
+camera = bpy.data.cameras[0]
+camera.clip_end = CAMERA_CLIP
+camera.ortho_scale = CAMERA_ORTHO
+camera.type = CAMERA_TYPE
+
+
+
+# add an empty for focusing the camera
+bpy.ops.object.add(location=CAMERA_FOCUS)
+target = bpy.data.objects[1]
+bpy.ops.object.select_all(action="SELECT")
+bpy.ops.object.track_set(type="TRACKTO")
+bpy.ops.object.select_all(action="DESELECT")
+
+
+if MODEL_EXT == 'stl':
+    # import an stl model
+    bpy.ops.import_mesh.stl(filepath=MODEL_PATH)
+    
+elif MODEL_EXT == 'obj':
+    # import an obj model
+    bpy.ops.import_scene.obj(
+        filepath=MODEL_PATH, 
+        use_smooth_groups=False, 
+        use_image_search=False, 
+        axis_forward="Y", 
+        axis_up="Z")
+
+
+# rotate the imported objects with meshes in the scene
+if CAMERA_TYPE == "PERSP":
+    for obj in bpy.data.objects[2:]:
+        obj.rotation_euler[2]=-.3
+
+
+# attempt to render
+scene = bpy.data.scenes.values()[0]
+scene.camera = camera_ob
+scene.render.filepath = RENDER_FILE
+scene.render.resolution_x = RENDER_WIDTH
+scene.render.resolution_y = RENDER_HEIGHT
+scene.render.resolution_percentage = 100
+bpy.ops.render.render(write_still=True)