Hi,
I am working with a triangle meshes with python Open3d and I want to add a texture mapping to my mesh (I didn’t find it in the documentation), this is an example code with simple cube mesh:
import numpy as np
import open3d as o3d
vert=[[0,0,0],[0,1,0],[1,1,0],[1,0,0],
[0,0,1],[0,1,1],[1,1,1],[1,0,1]]
faces=[[0, 1, 2], [0, 2, 3], [6, 5, 4],
[7, 6, 4], [5, 1, 0], [0, 4, 5], [3, 2, 6],
[6, 7, 3], [0, 3, 7], [0, 7, 4], [1, 5, 6],
[1, 6, 2]]
m=o3d.geometry.TriangleMesh(o3d.open3d_pybind.utility.Vector3dVector(vert),
o3d.open3d_pybind.utility.Vector3iVector(faces))
m.compute_vertex_normals()
o3d.visualization.draw_geometries([m])
I can see the cube without any texture.
Now I try to add texture:
text=cv2.imread('~/Downloads/cupe_uv.png')
plt.imshow(text)
this is the texture image:
adding texture uv coordinates:
DX,DY=0.5/2,0.66/2
v_uv=[[DX,DY],[DX,2*DY],[2*DX,2*DY],[2*DX,DY],
[0,DX],[DX,1],[3*DX,2*DY],[3*DX,DY]]
v_uv=np.asarray(v_uv)
v_uv=np.concatenate((v_uv,v_uv,v_uv),axis=0)
m.triangle_uvs = o3d.open3d_pybind.utility.Vector2dVector(v_uv)
m.textures=[o3d.geometry.Image(text)]
o3d.visualization.draw_geometries([m])
I know I didn’t set the uv coordinates to display all the colors of the cube (but some colors should be there…). Any way the mesh is still with out texture (same as in the beginning).