[1097] | 1 | /************************************************************************
|
---|
| 2 |
|
---|
| 3 | MxSMF
|
---|
| 4 |
|
---|
| 5 | Copyright (C) 1998 Michael Garland. See "COPYING.txt" for details.
|
---|
| 6 |
|
---|
| 7 | $Id: MxSMF.cxx,v 1.1 2002/09/24 16:53:54 wimmer Exp $
|
---|
| 8 |
|
---|
| 9 | ************************************************************************/
|
---|
| 10 |
|
---|
| 11 | #include "stdmix.h"
|
---|
| 12 | #include "mixio.h"
|
---|
| 13 | #include "MxSMF.h"
|
---|
| 14 | #include "MxVector.h"
|
---|
| 15 |
|
---|
| 16 | #define SMF_MAXLINE 65536
|
---|
| 17 |
|
---|
| 18 |
|
---|
| 19 | MxSMFReader::cmd_entry MxSMFReader::read_cmds[] = {
|
---|
| 20 | { "v", &MxSMFReader::vertex },
|
---|
| 21 | { "t", &MxSMFReader::face },
|
---|
| 22 | { "f", &MxSMFReader::face },
|
---|
| 23 |
|
---|
| 24 | // Properties and binding -- this is the new way to handle things
|
---|
| 25 | { "bind", &MxSMFReader::prop_bind },
|
---|
| 26 | { "n", &MxSMFReader::prop_normal },
|
---|
| 27 | { "c", &MxSMFReader::prop_color },
|
---|
| 28 | { "r", &MxSMFReader::prop_texcoord },
|
---|
| 29 |
|
---|
| 30 | { "begin", &MxSMFReader::begin },
|
---|
| 31 | { "end", &MxSMFReader::end },
|
---|
| 32 |
|
---|
| 33 | { "trans", &MxSMFReader::trans },
|
---|
| 34 | { "rot", &MxSMFReader::rot },
|
---|
| 35 | { "scale", &MxSMFReader::scale },
|
---|
| 36 |
|
---|
| 37 | { "tex", &MxSMFReader::read_texture },
|
---|
| 38 | { "t_trans", &MxSMFReader::t_trans },
|
---|
| 39 | { "t_scale", &MxSMFReader::t_scale },
|
---|
| 40 |
|
---|
| 41 | { NULL, NULL }
|
---|
| 42 | };
|
---|
| 43 |
|
---|
| 44 |
|
---|
| 45 | MxSMFReader::MxSMFReader()
|
---|
| 46 | : vx_stack(Mat4::I, 2), tx_stack(Mat4::I, 2),
|
---|
| 47 | vcorrect_stack(0, 2), vfirst_stack(1, 2)
|
---|
| 48 | {
|
---|
| 49 | next_vertex=1;
|
---|
| 50 | next_face=1;
|
---|
| 51 | quad_count=0;
|
---|
| 52 | poly_count=0;
|
---|
| 53 | line_buffer = new char[SMF_MAXLINE];
|
---|
| 54 | unparsed_hook = NULL;
|
---|
| 55 |
|
---|
| 56 | define_avars();
|
---|
| 57 | }
|
---|
| 58 |
|
---|
| 59 | MxSMFReader::~MxSMFReader()
|
---|
| 60 | {
|
---|
| 61 | delete[] line_buffer;
|
---|
| 62 | }
|
---|
| 63 |
|
---|
| 64 | void MxSMFReader::v_xform(Vec3& v)
|
---|
| 65 | {
|
---|
| 66 | Vec4 v2 = vx_stack.top() * Vec4(v,1);
|
---|
| 67 |
|
---|
| 68 | v[X] = v2[X]/v2[W];
|
---|
| 69 | v[Y] = v2[Y]/v2[W];
|
---|
| 70 | v[Z] = v2[Z]/v2[W];
|
---|
| 71 | }
|
---|
| 72 |
|
---|
| 73 | void MxSMFReader::t_xform(Vec2& v)
|
---|
| 74 | {
|
---|
| 75 | Vec4 v2 = tx_stack.top() * Vec4(v[X],v[Y],0,1);
|
---|
| 76 |
|
---|
| 77 | v[X] = v2[X]/v2[W];
|
---|
| 78 | v[Y] = v2[Y]/v2[W];
|
---|
| 79 | }
|
---|
| 80 |
|
---|
| 81 | unsigned int MxSMFReader::vid_xform(int id)
|
---|
| 82 | {
|
---|
| 83 | if( id < 0 )
|
---|
| 84 | id += next_vertex;
|
---|
| 85 | else
|
---|
| 86 | id += vcorrect_stack.top() + (vfirst_stack.top() - 1);
|
---|
| 87 |
|
---|
| 88 | return id;
|
---|
| 89 | }
|
---|
| 90 |
|
---|
| 91 | ////////////////////////////////////////////////////////////////////////
|
---|
| 92 |
|
---|
| 93 | void MxSMFReader::define_avars()
|
---|
| 94 | {
|
---|
| 95 | asp_store()->defvar("vertex_correction", MXASP_INT, &vcorrect_stack.top());
|
---|
| 96 | }
|
---|
| 97 |
|
---|
| 98 | void MxSMFReader::update_avars()
|
---|
| 99 | {
|
---|
| 100 | MxAspVar *avar;
|
---|
| 101 |
|
---|
| 102 | avar = asp_store()->lookup("vertex_correction");
|
---|
| 103 | if( avar )
|
---|
| 104 | avar->bind("vertex_correction", MXASP_INT, &vcorrect_stack.top());
|
---|
| 105 | }
|
---|
| 106 |
|
---|
| 107 | void MxSMFReader::begin(int, char *[], MxStdModel&)
|
---|
| 108 | {
|
---|
| 109 | vx_stack.push();
|
---|
| 110 | tx_stack.push();
|
---|
| 111 | vfirst_stack.push(next_vertex);
|
---|
| 112 | vcorrect_stack.push();
|
---|
| 113 | update_avars();
|
---|
| 114 | }
|
---|
| 115 |
|
---|
| 116 | void MxSMFReader::end(int, char *[], MxStdModel&)
|
---|
| 117 | {
|
---|
| 118 | vx_stack.pop();
|
---|
| 119 | tx_stack.pop();
|
---|
| 120 | vfirst_stack.pop();
|
---|
| 121 | vcorrect_stack.pop();
|
---|
| 122 | update_avars();
|
---|
| 123 | }
|
---|
| 124 |
|
---|
| 125 | void MxSMFReader::trans(int, char *argv[], MxStdModel&)
|
---|
| 126 | {
|
---|
| 127 | Mat4 M = Mat4::trans(atof(argv[0]), atof(argv[1]), atof(argv[2]));
|
---|
| 128 | vx_stack.top() = vx_stack.top() * M;
|
---|
| 129 | }
|
---|
| 130 |
|
---|
| 131 | void MxSMFReader::rot(int, char *argv[], MxStdModel&)
|
---|
| 132 | {
|
---|
| 133 | Mat4 M;
|
---|
| 134 | switch( argv[0][0] )
|
---|
| 135 | {
|
---|
| 136 | case 'x':
|
---|
| 137 | M = Mat4::xrot(atof(argv[1]) * M_PI/180.0);
|
---|
| 138 | break;
|
---|
| 139 | case 'y':
|
---|
| 140 | M = Mat4::yrot(atof(argv[1]) * M_PI/180.0);
|
---|
| 141 | break;
|
---|
| 142 | case 'z':
|
---|
| 143 | M = Mat4::zrot(atof(argv[1]) * M_PI/180.0);
|
---|
| 144 | break;
|
---|
| 145 | default:
|
---|
| 146 | mxmsg_signal(MXMSG_WARN, "Malformed SMF rotation command.");
|
---|
| 147 | break;
|
---|
| 148 | }
|
---|
| 149 |
|
---|
| 150 | vx_stack.top() = vx_stack.top() * M;
|
---|
| 151 | }
|
---|
| 152 |
|
---|
| 153 | void MxSMFReader::scale(int, char *argv[], MxStdModel&)
|
---|
| 154 | {
|
---|
| 155 | Mat4 M = Mat4::scale(atof(argv[0]), atof(argv[1]), atof(argv[2]));
|
---|
| 156 | vx_stack.top() = vx_stack.top() * M;
|
---|
| 157 | }
|
---|
| 158 |
|
---|
| 159 | void MxSMFReader::t_trans(int, char *argv[], MxStdModel&)
|
---|
| 160 | {
|
---|
| 161 | Mat4 M = Mat4::trans(atof(argv[0]), atof(argv[1]), 0.0);
|
---|
| 162 | tx_stack.top() = tx_stack.top() * M;
|
---|
| 163 | }
|
---|
| 164 |
|
---|
| 165 | void MxSMFReader::t_scale(int, char *argv[], MxStdModel&)
|
---|
| 166 | {
|
---|
| 167 | Mat4 M = Mat4::scale(atof(argv[0]), atof(argv[1]), 1.0);
|
---|
| 168 | tx_stack.top() = tx_stack.top() * M;
|
---|
| 169 | }
|
---|
| 170 |
|
---|
| 171 | void MxSMFReader::vertex(int, char *argv[], MxStdModel& m)
|
---|
| 172 | {
|
---|
| 173 | Vec3 v(atof(argv[0]), atof(argv[1]), atof(argv[2]));
|
---|
| 174 |
|
---|
| 175 | v_xform(v);
|
---|
| 176 | next_vertex++;
|
---|
| 177 |
|
---|
| 178 | m.add_vertex((float)v[X], (float)v[Y], (float)v[Z]);
|
---|
| 179 | }
|
---|
| 180 |
|
---|
| 181 | void MxSMFReader::prop_bind(int argc, char *argv[], MxStdModel& m)
|
---|
| 182 | {
|
---|
| 183 | if( argc < 2 ) return; // Not enough arguments
|
---|
| 184 |
|
---|
| 185 | switch( argv[0][0] )
|
---|
| 186 | {
|
---|
| 187 | case 'n': m.normal_binding(m.parse_binding(argv[1])); break;
|
---|
| 188 | case 'c': m.color_binding(m.parse_binding(argv[1])); break;
|
---|
| 189 | case 'r': m.texcoord_binding(m.parse_binding(argv[1])); break;
|
---|
| 190 | }
|
---|
| 191 | }
|
---|
| 192 |
|
---|
| 193 | void MxSMFReader::prop_normal(int /*argc*/, char *argv[], MxStdModel& m)
|
---|
| 194 | {
|
---|
| 195 | Vec3 n(atof(argv[0]), atof(argv[1]), atof(argv[2]));
|
---|
| 196 | //v_xform(n); //!!BUG: Need to transform normals appropriately
|
---|
| 197 | unitize(n);
|
---|
| 198 | m.add_normal((float)n[X], (float)n[Y], (float)n[Z]);
|
---|
| 199 | }
|
---|
| 200 |
|
---|
| 201 | void MxSMFReader::prop_color(int /*argc*/, char *argv[], MxStdModel& m)
|
---|
| 202 | {
|
---|
| 203 | float r = (float)atof(argv[0]);
|
---|
| 204 | float g = (float)atof(argv[1]);
|
---|
| 205 | float b = (float)atof(argv[2]);
|
---|
| 206 | m.add_color(r, g, b);
|
---|
| 207 | }
|
---|
| 208 |
|
---|
| 209 | void MxSMFReader::prop_texcoord(int /*argc*/, char *argv[], MxStdModel& m)
|
---|
| 210 | {
|
---|
| 211 | Vec2 v(atof(argv[0]), atof(argv[1]));
|
---|
| 212 | t_xform(v);
|
---|
| 213 | m.add_texcoord((float)v[X], (float)v[Y]);
|
---|
| 214 | }
|
---|
| 215 |
|
---|
| 216 | void MxSMFReader::read_texture(int /*argc*/, char *argv[], MxStdModel& m)
|
---|
| 217 | {
|
---|
| 218 | ifstream in(argv[0]);
|
---|
| 219 | MxRaster *tex = pnm_read(in);
|
---|
| 220 | tex->vflip();
|
---|
| 221 | m.add_texmap(tex, argv[0]);
|
---|
| 222 | }
|
---|
| 223 |
|
---|
| 224 | void MxSMFReader::face(int argc, char *argv[], MxStdModel& m)
|
---|
| 225 | {
|
---|
| 226 | if( argc == 3 )
|
---|
| 227 | {
|
---|
| 228 | unsigned int v0 = vid_xform(atoi(argv[0]));
|
---|
| 229 | unsigned int v1 = vid_xform(atoi(argv[1]));
|
---|
| 230 | unsigned int v2 = vid_xform(atoi(argv[2]));
|
---|
| 231 |
|
---|
| 232 | next_face++;
|
---|
| 233 | m.add_face(v0 - 1, v1 - 1, v2 - 1);
|
---|
| 234 | }
|
---|
| 235 | else if( argc == 4 )
|
---|
| 236 | {
|
---|
| 237 | if( !quad_count )
|
---|
| 238 | mxmsg_signalf(MXMSG_NOTE,
|
---|
| 239 | "Input polygon #%d is a quadrilateral. Splitting it.", next_face);
|
---|
| 240 |
|
---|
| 241 | quad_count++;
|
---|
| 242 |
|
---|
| 243 | unsigned int v[4];
|
---|
| 244 | v[0] = vid_xform(atoi(argv[0])) - 1;
|
---|
| 245 | v[1] = vid_xform(atoi(argv[1])) - 1;
|
---|
| 246 | v[2] = vid_xform(atoi(argv[2])) - 1;
|
---|
| 247 | v[3] = vid_xform(atoi(argv[3])) - 1;
|
---|
| 248 |
|
---|
| 249 | float e[4][3];
|
---|
| 250 | mxv_unitize(mxv_sub(e[0], m.vertex(v[1]), m.vertex(v[0]), 3), 3);
|
---|
| 251 | mxv_unitize(mxv_sub(e[1], m.vertex(v[2]), m.vertex(v[1]), 3), 3);
|
---|
| 252 | mxv_unitize(mxv_sub(e[2], m.vertex(v[3]), m.vertex(v[2]), 3), 3);
|
---|
| 253 | mxv_unitize(mxv_sub(e[3], m.vertex(v[0]), m.vertex(v[3]), 3), 3);
|
---|
| 254 |
|
---|
| 255 | float a_02 = (1-mxv_dot(e[0], e[3], 3)) + (1-mxv_dot(e[1], e[2], 3));
|
---|
| 256 | float a_13 = (1-mxv_dot(e[1], e[0], 3)) + (1-mxv_dot(e[3], e[2], 3));
|
---|
| 257 |
|
---|
| 258 | if( a_02 <= a_13 )
|
---|
| 259 | {
|
---|
| 260 | next_face++; m.add_face(v[0], v[1], v[2]);
|
---|
| 261 | next_face++; m.add_face(v[0], v[2], v[3]);
|
---|
| 262 | }
|
---|
| 263 | else
|
---|
| 264 | {
|
---|
| 265 | next_face++; m.add_face(v[0], v[1], v[3]);
|
---|
| 266 | next_face++; m.add_face(v[1], v[2], v[3]);
|
---|
| 267 | }
|
---|
| 268 | }
|
---|
| 269 | else
|
---|
| 270 | {
|
---|
| 271 | mxmsg_signalf(MXMSG_WARN,
|
---|
| 272 | "Input polygon #%d has more than 4 sides. Ignoring it.",
|
---|
| 273 | next_face);
|
---|
| 274 |
|
---|
| 275 | poly_count++;
|
---|
| 276 | }
|
---|
| 277 | }
|
---|
| 278 |
|
---|
| 279 | ////////////////////////////////////////////////////////////////////////
|
---|
| 280 |
|
---|
| 281 | bool MxSMFReader::execute_command(const MxCmd& cmd, void *closure)
|
---|
| 282 | {
|
---|
| 283 | MxStdModel& m = *(MxStdModel *)closure;
|
---|
| 284 | int argc = cmd.phrases[0].length();
|
---|
| 285 | char **argv = (char **)&cmd.phrases[0][0];
|
---|
| 286 |
|
---|
| 287 | cmd_entry *entry = &read_cmds[0];
|
---|
| 288 | bool handled = false;
|
---|
| 289 |
|
---|
| 290 | while( entry->name && !handled )
|
---|
| 291 | if( streq(entry->name, cmd.op) )
|
---|
| 292 | {
|
---|
| 293 | (this->*(entry->cmd))(argc, argv, m);
|
---|
| 294 | handled = true;
|
---|
| 295 | }
|
---|
| 296 | else
|
---|
| 297 | entry++;
|
---|
| 298 |
|
---|
| 299 | if( !handled )
|
---|
| 300 | if( !unparsed_hook ||
|
---|
| 301 | unparsed_hook && !(*unparsed_hook)(cmd.op, argc, argv, m) )
|
---|
| 302 | {
|
---|
| 303 | return false;
|
---|
| 304 | }
|
---|
| 305 |
|
---|
| 306 | return true;
|
---|
| 307 | }
|
---|
| 308 |
|
---|
| 309 | void MxSMFReader::parse_line(char *line, MxStdModel& m)
|
---|
| 310 | {
|
---|
| 311 | MxCmdParser::parse_line(line, &m);
|
---|
| 312 | }
|
---|
| 313 |
|
---|
| 314 | MxStdModel *MxSMFReader::read(istream& in, MxStdModel *m)
|
---|
| 315 | {
|
---|
| 316 | if( !m )
|
---|
| 317 | m = new MxStdModel(8, 16);
|
---|
| 318 |
|
---|
| 319 | begin(0, NULL, *m);
|
---|
| 320 | while( !in.eof() )
|
---|
| 321 | {
|
---|
| 322 | in >> ws;
|
---|
| 323 | if( in.peek() == '#' )
|
---|
| 324 | in.ignore(SMF_MAXLINE, '\n');
|
---|
| 325 | else if( in.getline(line_buffer, SMF_MAXLINE, '\n').good() )
|
---|
| 326 | parse_line(line_buffer, *m);
|
---|
| 327 | }
|
---|
| 328 | end(0, NULL, *m);
|
---|
| 329 |
|
---|
| 330 | if( quad_count )
|
---|
| 331 | mxmsg_signalf(MXMSG_WARN,
|
---|
| 332 | "Split %d input quadrilaterals. "
|
---|
| 333 | "Auto-splitting does not preserve properties!",
|
---|
| 334 | quad_count);
|
---|
| 335 | if( poly_count )
|
---|
| 336 | mxmsg_signalf(MXMSG_WARN,
|
---|
| 337 | "Ignored %d input polygons of more than 4 sides.",
|
---|
| 338 | poly_count);
|
---|
| 339 |
|
---|
| 340 |
|
---|
| 341 | return m;
|
---|
| 342 | }
|
---|
| 343 |
|
---|
| 344 | #ifndef MIX_ANSI_IOSTREAMS
|
---|
| 345 | MxStdModel *MxSMFReader::read(int fd, MxStdModel *m)
|
---|
| 346 | {
|
---|
| 347 | ifstream in(dup(fd)); // Duplicate handle will be closed on exit
|
---|
| 348 | return read(in, m);
|
---|
| 349 | }
|
---|
| 350 | #endif
|
---|
| 351 |
|
---|
| 352 |
|
---|
| 353 |
|
---|
| 354 | MxSMFWriter::MxSMFWriter()
|
---|
| 355 | {
|
---|
| 356 | vertex_annotate = NULL;
|
---|
| 357 | face_annotate = NULL;
|
---|
| 358 | }
|
---|
| 359 |
|
---|
| 360 | void MxSMFWriter::write(ostream& out, MxStdModel& m)
|
---|
| 361 | {
|
---|
| 362 | unsigned int i;
|
---|
| 363 |
|
---|
| 364 | out << "begin" << endl;
|
---|
| 365 |
|
---|
| 366 | for(unsigned int v=0; v<m.vert_count(); v++)
|
---|
| 367 | {
|
---|
| 368 | // We must output all vertices since numbering is implicit
|
---|
| 369 | if( vertex_annotate ) (*vertex_annotate)(out, m, v);
|
---|
| 370 | out << m.vertex(v) << endl;
|
---|
| 371 | }
|
---|
| 372 |
|
---|
| 373 | for(unsigned int f=0; f<m.face_count(); f++)
|
---|
| 374 | if( m.face_is_valid(f) )
|
---|
| 375 | {
|
---|
| 376 | if( face_annotate ) (*face_annotate)(out, m, f);
|
---|
| 377 | out << m.face(f) << endl;
|
---|
| 378 | }
|
---|
| 379 |
|
---|
| 380 | if( m.normal_binding() != MX_UNBOUND )
|
---|
| 381 | {
|
---|
| 382 | out << "bind n " << m.binding_name(m.normal_binding()) << endl;
|
---|
| 383 | for(i=0; i<m.normal_count(); i++)
|
---|
| 384 | out << m.normal(i) << endl;
|
---|
| 385 | }
|
---|
| 386 |
|
---|
| 387 | if( m.color_binding() != MX_UNBOUND )
|
---|
| 388 | {
|
---|
| 389 | out << "bind c " << m.binding_name(m.color_binding()) << endl;
|
---|
| 390 | for(i=0; i<m.color_count(); i++)
|
---|
| 391 | out << m.color(i) << endl;
|
---|
| 392 | }
|
---|
| 393 |
|
---|
| 394 | if( m.texcoord_binding() != MX_UNBOUND )
|
---|
| 395 | {
|
---|
| 396 | out << "tex " << m.texmap_name() << endl;
|
---|
| 397 | out << "bind r " << m.binding_name(m.texcoord_binding()) << endl;
|
---|
| 398 | for(i=0; i<m.texcoord_count(); i++)
|
---|
| 399 | out << m.texcoord(i) << endl;
|
---|
| 400 | }
|
---|
| 401 |
|
---|
| 402 | out << "end" << endl;
|
---|
| 403 | }
|
---|
| 404 |
|
---|
| 405 | #ifndef MIX_ANSI_IOSTREAMS
|
---|
| 406 | void MxSMFWriter::write(int fd, MxStdModel& m)
|
---|
| 407 | {
|
---|
| 408 | ofstream out(dup(fd)); // Duplicate handle will be closed on exit
|
---|
| 409 | write(out, m);
|
---|
| 410 | }
|
---|
| 411 | #endif
|
---|