PyProgMesh/pmtest.py at master · ponyrider0/PyProgMesh · GitHub

1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126

import os
import sys
import pyprogmesh
import pyffi.formats.nif
from pyffi.formats.nif import NifFormat


def PMBlock(block):
    print "========================NEW BLOCK========================="
    verts = list()
    faces = list()
    PMSettings = pyprogmesh.ProgMeshSettings()
    if block.num_uv_sets > 0:
        PMSettings.ProtectTexture = True
    if block.has_vertex_colors:
        PMSettings.ProtectColor = True
##    if block.num_vertices > block.num_triangles:
###        raw_input("Border condition decteted.  Enabling option. Press ENTER to continue...")
##        PMSettings.KeepBorder = True
    PMSettings.RemoveDuplicate = True
    PMSettings.KeepBorder = False

    for i in range(0, len(block.vertices)):
        _v = block.vertices[i]
#        print "vertex: (%f, %f, %f)" % (_v.x, _v.y, _v.z)
        v = [_v.x, _v.y, _v.z]
        if block.num_uv_sets > 0:
            _uv = [block.uv_sets[0][i].u, block.uv_sets[0][i].v]
        else:
            _uv = None
        if block.has_normals:
            _normal = [block.normals[i].x, block.normals[i].y, block.normals[i].z]
        else:
            _normal = None
        if block.has_vertex_colors:
            _vc = [block.vertex_colors[i].r, block.vertex_colors[i].g, block.vertex_colors[i].b, block.vertex_colors[i].a]
        else:
            _vc = None
        verts.append(pyprogmesh.RawVertex(Position=v, UV=_uv, Normal=_normal, RGBA=_vc))
    for i in range(0, len(block.triangles)):
        _t = block.triangles[i]
#        print "triangle: [%d, %d, %d]" % (_t.v_1, _t.v_2, _t.v_3)
        f = [_t.v_1, _t.v_2, _t.v_3]
        faces.append(f)
    print "PREP: old verts = %d, old faces = %d" % (len(verts), len(faces))
    pm = pyprogmesh.ProgMesh(len(verts), len(faces), verts, faces, PMSettings)
#    raw_input("Press ENTER to compute progressive mesh.")
    pm.ComputeProgressiveMesh()
#    raw_input("Press ENTER to perform decimation.")
    result = pm.DoProgressiveMesh(0.25)
    if result == 0:
        return
    else:
        numVerts, verts, numFaces, faces = result[0], result[1], result[2], result[3]
        print "RESULTS: new verts = %d, new faces = %d" % (numVerts, numFaces)
        block.num_vertices = numVerts
        block.vertices.update_size()
        if block.num_uv_sets > 0:
            block.uv_sets.update_size()
        if block.has_normals:
            block.normals.update_size()
        if block.has_vertex_colors:
            block.vertex_colors.update_size()
        for i in range(0, numVerts):
            rawVert = verts[i]
            v = block.vertices[i]
            v.x = rawVert.Position[0]
            v.y = rawVert.Position[1]
            v.z = rawVert.Position[2]
            if block.num_uv_sets > 0:
                uv = block.uv_sets[0][i]
                uv.u = rawVert.UV[0]
                uv.v = rawVert.UV[1]
            if block.has_normals:
                normals = block.normals[i]
                normals.x = rawVert.Normal[0]
                normals.y = rawVert.Normal[1]
                normals.z = rawVert.Normal[2]
            if block.has_vertex_colors:
                vc = block.vertex_colors[i]
                vc.r = rawVert.RGBA[0]
                vc.g = rawVert.RGBA[1]
                vc.b = rawVert.RGBA[2]
                vc.a = rawVert.RGBA[3]
        block.num_triangles = numFaces
        block.triangles.update_size()
        for i in range(0, numFaces):
            triangle = faces[i]
            t = block.triangles[i]
            t.v_1 = triangle[0]
            t.v_2 = triangle[1]
            t.v_3 = triangle[2]

##        i = 0
##        for r in result[1]:
##            print "New Triangle[%d]: (%f, %f, %f)" % (i, r.Position[0], r.Position[1], r.Position[2])
##            i = i + 1
##            if i > 5:
##                break
##        i = 0
##        for f in result[3]:
##            print "New Face[%d]: [%d, %d, %d]" % (i, f[0], f[1], f[2])
##            i = i + 1
##            if i > 5:
##                break


input_filename = 'meshes/floraUbcUtreeU01.nif'
#input_filename = 'meshes/cessna.nif'
fstream = open(input_filename, 'rb')
x = NifFormat.Data()
x.read(fstream)
fstream.close()

for root in x.roots:
    for block in root.tree():
        if isinstance(block, NifFormat.NiTriShapeData):
            if block.has_vertices and block.has_triangles:
                if block.num_vertices < 10000:
                    PMBlock(block)

output_filename = input_filename.lower().replace(".nif", "_reduced.nif")
ostream = open(output_filename, 'wb')
x.write(ostream)
ostream.close()