rev |
line source |
nuclear@19
|
1 #include <stdio.h>
|
nuclear@19
|
2 #include "goat3d.h"
|
nuclear@19
|
3 #include "goat3d_impl.h"
|
nuclear@19
|
4 #include "tinyxml2.h"
|
nuclear@19
|
5 #include "log.h"
|
nuclear@19
|
6
|
nuclear@19
|
7 using namespace tinyxml2;
|
nuclear@19
|
8
|
nuclear@19
|
9 static Material *read_material(Scene *scn, XMLElement *xml_mtl);
|
nuclear@19
|
10 static const char *read_material_attrib(MaterialAttrib *attr, XMLElement *xml_attr);
|
nuclear@19
|
11 static Mesh *read_mesh(Scene *scn, XMLElement *xml_mesh);
|
nuclear@19
|
12 static std::string get_name(XMLElement *node, int idx);
|
nuclear@19
|
13
|
nuclear@19
|
14 bool Scene::loadxml(goat3d_io *io)
|
nuclear@19
|
15 {
|
nuclear@19
|
16 long bytes = io->seek(0, SEEK_END, io->cls);
|
nuclear@19
|
17 io->seek(0, SEEK_SET, io->cls);
|
nuclear@19
|
18
|
nuclear@19
|
19 char *buf = new char[bytes];
|
nuclear@19
|
20 if(io->read(buf, bytes, io->cls) < bytes) {
|
nuclear@19
|
21 logmsg(LOG_ERROR, "failed to read XML scene file\n");
|
nuclear@45
|
22 delete [] buf;
|
nuclear@19
|
23 return false;
|
nuclear@19
|
24 }
|
nuclear@19
|
25
|
nuclear@19
|
26 XMLDocument xml;
|
nuclear@19
|
27 XMLError err = xml.Parse(buf, bytes);
|
nuclear@19
|
28 if(err) {
|
nuclear@19
|
29 logmsg(LOG_ERROR, "failed to parse XML scene file: %s\n%s\n", xml.GetErrorStr1(),
|
nuclear@19
|
30 xml.GetErrorStr2());
|
nuclear@45
|
31 delete [] buf;
|
nuclear@19
|
32 return false;
|
nuclear@19
|
33 }
|
nuclear@19
|
34
|
nuclear@19
|
35 XMLElement *root = xml.RootElement();
|
nuclear@19
|
36 if(strcmp(root->Name(), "scene") != 0) {
|
nuclear@19
|
37 logmsg(LOG_ERROR, "invalid XML file, root node is not <scene>\n");
|
nuclear@45
|
38 delete [] buf;
|
nuclear@19
|
39 return false;
|
nuclear@19
|
40 }
|
nuclear@19
|
41
|
nuclear@19
|
42 XMLElement *elem;
|
nuclear@19
|
43
|
nuclear@19
|
44 // get all materials
|
nuclear@19
|
45 elem = root->FirstChildElement("mtl");
|
nuclear@19
|
46 while(elem) {
|
nuclear@19
|
47 Material *mtl = read_material(this, elem);
|
nuclear@19
|
48 if(mtl) {
|
nuclear@19
|
49 add_material(mtl);
|
nuclear@19
|
50 }
|
nuclear@19
|
51 elem = elem->NextSiblingElement("mtl");
|
nuclear@19
|
52 }
|
nuclear@19
|
53
|
nuclear@19
|
54 // get all meshes
|
nuclear@19
|
55 elem = root->FirstChildElement("mesh");
|
nuclear@19
|
56 while(elem) {
|
nuclear@19
|
57 Mesh *mesh = read_mesh(this, elem);
|
nuclear@19
|
58 if(mesh) {
|
nuclear@19
|
59 add_mesh(mesh);
|
nuclear@19
|
60 }
|
nuclear@19
|
61 elem = elem->NextSiblingElement("mesh");
|
nuclear@19
|
62 }
|
nuclear@19
|
63
|
nuclear@45
|
64 delete [] buf;
|
nuclear@45
|
65 return true;
|
nuclear@19
|
66 }
|
nuclear@19
|
67
|
nuclear@19
|
68
|
nuclear@19
|
69 static Material *read_material(Scene *scn, XMLElement *xml_mtl)
|
nuclear@19
|
70 {
|
nuclear@19
|
71 Material *mtl = new Material;
|
nuclear@19
|
72 mtl->name = get_name(xml_mtl, scn->get_material_count());
|
nuclear@19
|
73
|
nuclear@19
|
74 // get all the material attributes in turn
|
nuclear@19
|
75 XMLElement *elem = xml_mtl->FirstChildElement("attr");
|
nuclear@19
|
76 while(elem) {
|
nuclear@19
|
77 MaterialAttrib attr;
|
nuclear@19
|
78 const char *name = read_material_attrib(&attr, elem);
|
nuclear@19
|
79 if(name) {
|
nuclear@19
|
80 (*mtl)[name] = attr;
|
nuclear@19
|
81 }
|
nuclear@19
|
82
|
nuclear@19
|
83 elem = elem->NextSiblingElement("attr");
|
nuclear@19
|
84 }
|
nuclear@19
|
85
|
nuclear@19
|
86 return mtl;
|
nuclear@19
|
87 }
|
nuclear@19
|
88
|
nuclear@19
|
89 static const char *read_material_attrib(MaterialAttrib *attr, XMLElement *xml_attr)
|
nuclear@19
|
90 {
|
nuclear@19
|
91 const char *name;
|
nuclear@19
|
92
|
nuclear@19
|
93 XMLElement *elem;
|
nuclear@19
|
94 if((elem = xml_attr->FirstChildElement("name"))) {
|
nuclear@19
|
95 if(!(name = elem->Attribute("string"))) {
|
nuclear@19
|
96 return 0;
|
nuclear@19
|
97 }
|
nuclear@19
|
98 }
|
nuclear@19
|
99
|
nuclear@19
|
100 if((elem = xml_attr->FirstChildElement("val"))) {
|
nuclear@19
|
101 if(elem->QueryFloatAttribute("float", &attr->value.x) != XML_NO_ERROR) {
|
nuclear@19
|
102 // try a float3
|
nuclear@19
|
103 const char *valstr = elem->Attribute("float3");
|
nuclear@19
|
104 if(!valstr || sscanf(valstr, "%f %f %f", &attr->value.x, &attr->value.y,
|
nuclear@19
|
105 &attr->value.z) != 3) {
|
nuclear@19
|
106 // try a float4
|
nuclear@19
|
107 valstr = elem->Attribute("float4");
|
nuclear@19
|
108 if(!valstr || sscanf(valstr, "%f %f %f %f", &attr->value.x, &attr->value.y,
|
nuclear@19
|
109 &attr->value.z, &attr->value.w) != 4) {
|
nuclear@19
|
110 // no valid val attribute found
|
nuclear@19
|
111 return 0;
|
nuclear@19
|
112 }
|
nuclear@19
|
113 }
|
nuclear@19
|
114 }
|
nuclear@19
|
115 }
|
nuclear@19
|
116
|
nuclear@19
|
117 if((elem = xml_attr->FirstChildElement("map"))) {
|
nuclear@19
|
118 const char *tex = elem->Attribute("string");
|
nuclear@19
|
119 if(tex) {
|
nuclear@19
|
120 attr->map = std::string(tex);
|
nuclear@19
|
121 }
|
nuclear@19
|
122 }
|
nuclear@19
|
123
|
nuclear@19
|
124 return name;
|
nuclear@19
|
125 }
|
nuclear@19
|
126
|
nuclear@19
|
127 static Mesh *read_mesh(Scene *scn, XMLElement *xml_mesh)
|
nuclear@19
|
128 {
|
nuclear@19
|
129 Mesh *mesh = new Mesh;
|
nuclear@19
|
130 mesh->name = get_name(xml_mesh, scn->get_mesh_count());
|
nuclear@19
|
131
|
nuclear@19
|
132 XMLElement *elem;
|
nuclear@19
|
133 if((elem = xml_mesh->FirstChildElement("material"))) {
|
nuclear@19
|
134 int idx;
|
nuclear@19
|
135 if(elem->QueryIntAttribute("int", &idx) == XML_NO_ERROR) {
|
nuclear@19
|
136 mesh->material = scn->get_material(idx);
|
nuclear@19
|
137 } else {
|
nuclear@19
|
138 // try string
|
nuclear@19
|
139 const char *mtlstr = elem->Attribute("string");
|
nuclear@19
|
140 if(mtlstr) {
|
nuclear@19
|
141 mesh->material = scn->get_material(mtlstr);
|
nuclear@19
|
142 }
|
nuclear@19
|
143 }
|
nuclear@19
|
144 }
|
nuclear@19
|
145
|
nuclear@19
|
146 /* reading mesh data from XML is not supported, only MESH_FILE can be used to
|
nuclear@19
|
147 * specify an external mesh file to be loaded
|
nuclear@19
|
148 */
|
nuclear@19
|
149
|
nuclear@19
|
150 if((elem = xml_mesh->FirstChildElement("file"))) {
|
nuclear@19
|
151 const char *fname = elem->Attribute("string");
|
nuclear@19
|
152 if(fname) {
|
nuclear@19
|
153 if(!mesh->load(fname)) {
|
nuclear@19
|
154 delete mesh;
|
nuclear@19
|
155 return 0;
|
nuclear@19
|
156 }
|
nuclear@19
|
157 }
|
nuclear@19
|
158 }
|
nuclear@19
|
159
|
nuclear@19
|
160 return mesh;
|
nuclear@19
|
161 }
|
nuclear@19
|
162
|
nuclear@19
|
163 static std::string get_name(XMLElement *node, int idx)
|
nuclear@19
|
164 {
|
nuclear@19
|
165 char buf[64];
|
nuclear@19
|
166 const char *name = 0;
|
nuclear@19
|
167
|
nuclear@19
|
168 XMLElement *elem;
|
nuclear@19
|
169 if((elem = node->FirstChildElement("name"))) {
|
nuclear@19
|
170 name = elem->Attribute("string");
|
nuclear@19
|
171 }
|
nuclear@19
|
172
|
nuclear@19
|
173 if(!name) {
|
nuclear@19
|
174 sprintf(buf, "mesh%04d", idx);
|
nuclear@19
|
175 name = buf;
|
nuclear@19
|
176 }
|
nuclear@19
|
177
|
nuclear@19
|
178 return std::string(name);
|
nuclear@19
|
179 }
|