mirror of
https://github.com/PrimitiveAnything/PrimitiveAnything.git
synced 2025-09-18 05:22:48 +08:00
115 lines
2.9 KiB
Python
Executable File
115 lines
2.9 KiB
Python
Executable File
# -*- coding: utf-8 -*-
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import os
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import cv2
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import numpy as np
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import PIL.Image
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from typing import Optional
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import trimesh
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def save_obj(pointnp_px3, facenp_fx3, fname):
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fid = open(fname, "w")
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write_str = ""
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for pidx, p in enumerate(pointnp_px3):
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pp = p
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write_str += "v %f %f %f\n" % (pp[0], pp[1], pp[2])
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for i, f in enumerate(facenp_fx3):
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f1 = f + 1
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write_str += "f %d %d %d\n" % (f1[0], f1[1], f1[2])
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fid.write(write_str)
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fid.close()
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return
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def savemeshtes2(pointnp_px3, tcoords_px2, facenp_fx3, facetex_fx3, tex_map, fname):
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fol, na = os.path.split(fname)
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na, _ = os.path.splitext(na)
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matname = "%s/%s.mtl" % (fol, na)
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fid = open(matname, "w")
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fid.write("newmtl material_0\n")
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fid.write("Kd 1 1 1\n")
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fid.write("Ka 0 0 0\n")
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fid.write("Ks 0.4 0.4 0.4\n")
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fid.write("Ns 10\n")
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fid.write("illum 2\n")
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fid.write("map_Kd %s.png\n" % na)
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fid.close()
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####
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fid = open(fname, "w")
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fid.write("mtllib %s.mtl\n" % na)
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for pidx, p in enumerate(pointnp_px3):
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pp = p
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fid.write("v %f %f %f\n" % (pp[0], pp[1], pp[2]))
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for pidx, p in enumerate(tcoords_px2):
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pp = p
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fid.write("vt %f %f\n" % (pp[0], pp[1]))
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fid.write("usemtl material_0\n")
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for i, f in enumerate(facenp_fx3):
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f1 = f + 1
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f2 = facetex_fx3[i] + 1
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fid.write("f %d/%d %d/%d %d/%d\n" % (f1[0], f2[0], f1[1], f2[1], f1[2], f2[2]))
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fid.close()
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PIL.Image.fromarray(np.ascontiguousarray(tex_map), "RGB").save(
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os.path.join(fol, "%s.png" % na))
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return
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class MeshOutput(object):
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def __init__(self,
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mesh_v: np.ndarray,
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mesh_f: np.ndarray,
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vertex_colors: Optional[np.ndarray] = None,
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uvs: Optional[np.ndarray] = None,
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mesh_tex_idx: Optional[np.ndarray] = None,
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tex_map: Optional[np.ndarray] = None):
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self.mesh_v = mesh_v
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self.mesh_f = mesh_f
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self.vertex_colors = vertex_colors
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self.uvs = uvs
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self.mesh_tex_idx = mesh_tex_idx
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self.tex_map = tex_map
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def contain_uv_texture(self):
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return (self.uvs is not None) and (self.mesh_tex_idx is not None) and (self.tex_map is not None)
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def contain_vertex_colors(self):
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return self.vertex_colors is not None
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def export(self, fname):
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if self.contain_uv_texture():
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savemeshtes2(
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self.mesh_v,
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self.uvs,
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self.mesh_f,
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self.mesh_tex_idx,
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self.tex_map,
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fname
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)
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elif self.contain_vertex_colors():
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mesh_obj = trimesh.Trimesh(vertices=self.mesh_v, faces=self.mesh_f, vertex_colors=self.vertex_colors)
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mesh_obj.export(fname)
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else:
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save_obj(
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self.mesh_v,
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self.mesh_f,
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fname
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)
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