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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
|
/*************************************************************************/
/* resource_importer_obj.cpp */
/*************************************************************************/
/* This file is part of: */
/* GODOT ENGINE */
/* http://www.godotengine.org */
/*************************************************************************/
/* Copyright (c) 2007-2017 Juan Linietsky, Ariel Manzur. */
/* Copyright (c) 2014-2017 Godot Engine contributors (cf. AUTHORS.md) */
/* */
/* Permission is hereby granted, free of charge, to any person obtaining */
/* a copy of this software and associated documentation files (the */
/* "Software"), to deal in the Software without restriction, including */
/* without limitation the rights to use, copy, modify, merge, publish, */
/* distribute, sublicense, and/or sell copies of the Software, and to */
/* permit persons to whom the Software is furnished to do so, subject to */
/* the following conditions: */
/* */
/* The above copyright notice and this permission notice shall be */
/* included in all copies or substantial portions of the Software. */
/* */
/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, */
/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF */
/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY */
/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, */
/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE */
/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. */
/*************************************************************************/
#include "resource_importer_obj.h"
#include "io/resource_saver.h"
#include "os/file_access.h"
#include "scene/resources/mesh.h"
#include "scene/resources/surface_tool.h"
#include "scene/resources/surface_tool.h"
String ResourceImporterOBJ::get_importer_name() const {
return "obj_mesh";
}
String ResourceImporterOBJ::get_visible_name() const {
return "OBJ As Mesh";
}
void ResourceImporterOBJ::get_recognized_extensions(List<String> *p_extensions) const {
p_extensions->push_back("obj");
}
String ResourceImporterOBJ::get_save_extension() const {
return "msh";
}
String ResourceImporterOBJ::get_resource_type() const {
return "Mesh";
}
bool ResourceImporterOBJ::get_option_visibility(const String &p_option, const Map<StringName, Variant> &p_options) const {
return true;
}
int ResourceImporterOBJ::get_preset_count() const {
return 0;
}
String ResourceImporterOBJ::get_preset_name(int p_idx) const {
return String();
}
void ResourceImporterOBJ::get_import_options(List<ImportOption> *r_options, int p_preset) const {
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "generate/tangents"), true));
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "generate/normals"), true));
//not for nowp
//r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL,"import/materials")));
//r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL,"import/textures")));
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "force/flip_faces"), false));
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "force/smooth_shading"), true));
r_options->push_back(ImportOption(PropertyInfo(Variant::BOOL, "force/weld_vertices"), true));
r_options->push_back(ImportOption(PropertyInfo(Variant::REAL, "force/weld_tolerance", PROPERTY_HINT_RANGE, "0.00001,16,0.00001"), 0.0001));
//r_options->push_back(PropertyInfo(Variant::INT,"compress/bitrate",PROPERTY_HINT_ENUM,"64,96,128,192"));
}
Error ResourceImporterOBJ::import(const String &p_source_file, const String &p_save_path, const Map<StringName, Variant> &p_options, List<String> *r_platform_variants, List<String> *r_gen_files) {
FileAccessRef f = FileAccess::open(p_source_file, FileAccess::READ);
ERR_FAIL_COND_V(!f, ERR_CANT_OPEN);
Ref<Mesh> mesh = Ref<Mesh>(memnew(Mesh));
Map<String, Ref<Material> > name_map;
bool generate_normals = p_options["generate/normals"];
bool generate_tangents = p_options["generate/tangents"];
bool flip_faces = p_options["force/flip_faces"];
bool force_smooth = p_options["force/smooth_shading"];
bool weld_vertices = p_options["force/weld_vertices"];
float weld_tolerance = p_options["force/weld_tolerance"];
Vector<Vector3> vertices;
Vector<Vector3> normals;
Vector<Vector2> uvs;
String name;
Ref<SurfaceTool> surf_tool = memnew(SurfaceTool);
surf_tool->begin(Mesh::PRIMITIVE_TRIANGLES);
if (force_smooth)
surf_tool->add_smooth_group(true);
int has_index_data = false;
while (true) {
String l = f->get_line().strip_edges();
if (l.begins_with("v ")) {
//vertex
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, ERR_INVALID_DATA);
Vector3 vtx;
vtx.x = v[1].to_float();
vtx.y = v[2].to_float();
vtx.z = v[3].to_float();
vertices.push_back(vtx);
} else if (l.begins_with("vt ")) {
//uv
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 3, ERR_INVALID_DATA);
Vector2 uv;
uv.x = v[1].to_float();
uv.y = 1.0 - v[2].to_float();
uvs.push_back(uv);
} else if (l.begins_with("vn ")) {
//normal
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, ERR_INVALID_DATA);
Vector3 nrm;
nrm.x = v[1].to_float();
nrm.y = v[2].to_float();
nrm.z = v[3].to_float();
normals.push_back(nrm);
} else if (l.begins_with("f ")) {
//vertex
has_index_data = true;
Vector<String> v = l.split(" ", false);
ERR_FAIL_COND_V(v.size() < 4, ERR_INVALID_DATA);
//not very fast, could be sped up
Vector<String> face[3];
face[0] = v[1].split("/");
face[1] = v[2].split("/");
ERR_FAIL_COND_V(face[0].size() == 0, ERR_PARSE_ERROR);
ERR_FAIL_COND_V(face[0].size() != face[1].size(), ERR_PARSE_ERROR);
for (int i = 2; i < v.size() - 1; i++) {
face[2] = v[i + 1].split("/");
ERR_FAIL_COND_V(face[0].size() != face[2].size(), ERR_PARSE_ERROR);
for (int j = 0; j < 3; j++) {
int idx = j;
if (!flip_faces && idx < 2) {
idx = 1 ^ idx;
}
if (face[idx].size() == 3) {
int norm = face[idx][2].to_int() - 1;
ERR_FAIL_INDEX_V(norm, normals.size(), ERR_PARSE_ERROR);
surf_tool->add_normal(normals[norm]);
}
if (face[idx].size() >= 2 && face[idx][1] != String()) {
int uv = face[idx][1].to_int() - 1;
ERR_FAIL_INDEX_V(uv, uvs.size(), ERR_PARSE_ERROR);
surf_tool->add_uv(uvs[uv]);
}
int vtx = face[idx][0].to_int() - 1;
ERR_FAIL_INDEX_V(vtx, vertices.size(), ERR_PARSE_ERROR);
Vector3 vertex = vertices[vtx];
if (weld_vertices)
vertex = vertex.snapped(weld_tolerance);
surf_tool->add_vertex(vertex);
}
face[1] = face[2];
}
} else if (l.begins_with("s ") && !force_smooth) { //smoothing
String what = l.substr(2, l.length()).strip_edges();
if (what == "off")
surf_tool->add_smooth_group(false);
else
surf_tool->add_smooth_group(true);
} else if (l.begins_with("o ") || f->eof_reached()) { //new surface or done
if (has_index_data) {
//new object/surface
if (generate_normals || force_smooth)
surf_tool->generate_normals();
if (uvs.size() && (normals.size() || generate_normals) && generate_tangents)
surf_tool->generate_tangents();
surf_tool->index();
mesh = surf_tool->commit(mesh);
if (name == "")
name = vformat(TTR("Surface %d"), mesh->get_surface_count() - 1);
mesh->surface_set_name(mesh->get_surface_count() - 1, name);
name = "";
surf_tool->clear();
surf_tool->begin(Mesh::PRIMITIVE_TRIANGLES);
if (force_smooth)
surf_tool->add_smooth_group(true);
has_index_data = false;
if (f->eof_reached())
break;
}
if (l.begins_with("o ")) //name
name = l.substr(2, l.length()).strip_edges();
}
}
/*
TODO, check existing materials and merge?
//re-apply materials if exist
for(int i=0;i<mesh->get_surface_count();i++) {
String n = mesh->surface_get_name(i);
if (name_map.has(n))
mesh->surface_set_material(i,name_map[n]);
}
*/
Error err = ResourceSaver::save(p_save_path + ".msh", mesh);
return err;
}
ResourceImporterOBJ::ResourceImporterOBJ() {
}
|