This is a simple renderer script for beginners to use blender and / or mitsuba2 to render 3D objects. Please follow the instruction and see the examples.
I recommend using anaconda to install dependencies.
conda create -n renderer python=3.8
conda activate renderer
conda install -c kitsune.one python-blender
conda install -c open3d-admin open3d
pip install addict matplotlib pandas plyfile pyyaml tqdm sklearn
Now, you can use blender to rendering! If you want to use mitsuba2, please follow the mitsuba2 to install mitsuba2, and don't forget add 'gpu_rgb' in mitsuba.conf if you want to use GPU to rendering.
You can see the examples.py to know how to use. The folder example is from 3D-FRONT, and you can use the json2obj.py from https://github.com/3D-FRONT-FUTURE/3D-FRONT-ToolBox/tree/master/scripts to get more scenes.
First, you need to inital a scene
scene = Scene()
Next, you need to add a camera, and set position, look_at, up vector.
cam = Camera(position=[1, 1, 1], look_at = [0, 0, 0], up = [0, 1, 0])
scene.addCam(cam)
Or, you can add scene.setCamGUI() to use open3d's GUI to specify a camera params.
Then, you can add objects you like
mesh_cube = Mesh('cube.obj')
scene.addMesh(mesh_cube)
Finally, you can render through
renderer = Renderer('blender',sample=32)
renderer.render('path/to/save(absolute path)',scene)
This is a initial script now, some features need to be added in the future
- Documents
- Object transform
- Lighting
- Normal, depth rendering