图中未显示conda下的Jupyter fresh install和使用viewscad上游示例

Question

以下是在Debian 9中重现该问题的环境（我必须添加lib3mf1_1.8.1+ds-3_amd64.deb、lib3mf-dev_1.8.1+ds-3_amd64.deb、它的工具_2.0.5-2_all.deb，它们不在存储库中，带有dpkg -i和apt install -f）：

# install openscad
cd /opt
git clone git://github.com/openscad/openscad.git
cd openscad
git submodule update --init
sudo ./scripts/uni-get-dependencies.sh
./scripts/check-dependencies.sh # lib3mf was missing
qmake openscad.pro
make # itstool was missing
cp /opt/openscad/openscad /usr/local/bin/
# setup a conda environment and install jupyterlab, solidpython, viewscad
conda create --name cad python=3
conda activate cad
conda install -y -n cad jupyterlab
pip install solidpython
pip install viewscad
# for jupyterlab:
conda install -c conda-forge -n cad nodejs
jupyter labextension install @jupyter-widgets/jupyterlab-manager

然后运行jupyter（这里是jupyter笔记本）

jupyter-notebook

在浏览器中打开的jupyter中启动python项目，并在第一个单元格中输入：

from solid import *
import viewscad
r = viewscad.Renderer()
#r = viewscad.Renderer(openscad_exec='/opt/openscad')
c = cylinder(r = 5, h = 2)
r.render(c)

结果是：

VBox(children=(HTML(value=''), Renderer(background='#cccc88', background_opacity=0.0, camera=PerspectiveCamera…

而不是像简化的上游示例here中那样显示图形

如果我在renderer调用中指定openscad的路径，比如建议的here和上面的注释行中，它是相同的

如果我用numpy而不是viewscad, solidscad, openscad测试另一个脚本，将显示图。openscad和solidscad各自都在工作。所以，我想我的问题与我的viewscad设置有关

Answer 1

我遇到了同样的问题，花了一段时间才意识到我没有正确安装pythreejs。尝试运行您作为管理员使用的任何提示，并检查pythreejs的完整安装

pip install pythreejs
jupyter nbextension install  py  symlink  sys-prefix pythreejs
jupyter nbextension enable  py  sys-prefix pythreejs

这帮我解决了问题，使用了Python提示