matpalm / Procedural_objects
Licence: mit
blender based random procedural object generation for bullet grasping
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python
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procedural generation of objects for bullet grasping
generate .obj files
we generate and export .obj files within blender
start blender under this directory
open blender console (ctrl-alt-w, shift-f4) and run generation script
f = "gen_objs.py"
exec(compile(open(f).read(),f,'exec'))
generate_n_objects(n=10, output_dir="objs")
run convex decomposition
exported .objs are concave only so need to run a convex decomposition on
meshes. we'll use vhacd to do this.
cd ~/dev
git clone [email protected]:kmammou/v-hacd.git
cd v-hacd/install
python3 run.py --cmake
which builds the binary $HOME/dev/v-hacd/build/linux/test/testVHACD
we can run vhacd on all exported .obj files to make a corresponding .vhacd.obj file.
.obj are used for visual mesh, .vhacd.obj are used for collision.
# note: this script assumes path to testVHACD
./run_vhacd.sh objs
create urdfs
to load objects into bullet we need to generate .urdf files.
use the bullet example data/cube.udf as a template
./gen_urdfs.py objs
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