def convert_to_stl(obj, savename, scale_ratio=1, pos=np.zeros(3), rotmat=np.eye(3)):
"""
:param obj: trimesh or file path
:param savename:
:return:
author: weiwei
date: 20201207
"""
trimesh = trm.load(obj)
tmptrimesh = scale(trimesh, scale_ratio)
homomat = rm.homomat_from_posrot(pos, rotmat)
tmptrimesh.apply_transform(homomat)
tmptrimesh.export(savename)
def scale(obj, scale_ratio):
"""
:param obj: trimesh or file path
:param scale_ratio: float, scale all axis equally
:return:
author: weiwei
date: 20201116
"""
if isinstance(obj, trm.Trimesh):
tmpmesh = obj.copy()
tmpmesh.apply_scale(scale_ratio)
return tmpmesh
elif isinstance(obj, str):
originalmesh = trm.load(obj)
tmpmesh = originalmesh.copy()
tmpmesh.apply_scale(scale_ratio)
return tmpmesh
author: weiwei
date: 20170221
"""
objtrm = trm.load_mesh(objpath)
pdnp = nodepath_from_vvnf(objtrm.vertices, objtrm.vertex_normals,
objtrm.faces)
return pdnp
if __name__ == '__main__':
import os, math, basis
import basis.trimesh as trimesh
import visualization.panda.world as wd
from panda3d.core import TransparencyAttrib
wd.World(cam_pos=[1.0, 1, .0, 1.0], lookat_pos=[0, 0, 0])
objpath = os.path.join(basis.__path__[0], 'objects', 'bunnysim.stl')
bt = trimesh.load(objpath)
btch = bt.convex_hull
pdnp = nodepath_from_vfnf(bt.vertices, bt.face_normals, bt.faces)
pdnp.reparentTo(base.render)
pdnp_cvxh = nodepath_from_vfnf(btch.vertices, btch.face_normals,
btch.faces)
pdnp_cvxh.setTransparency(TransparencyAttrib.MDual)
pdnp_cvxh.setColor(0, 1, 0, .3)
pdnp_cvxh.reparentTo(base.render)
pdnp2 = nodepath_from_vvnf(bt.vertices, bt.vertex_normals, bt.faces)
pdnp2.setPos(0, 0, .1)
pdnp2.reparentTo(base.render)
base.run()