[37] | 1 | #include <stdio.h> |
---|
| 2 | #include <stdlib.h> |
---|
| 3 | #include <strings.h> |
---|
| 4 | #include <iostream> |
---|
| 5 | #include <limits.h> |
---|
| 6 | #include <ply.h> |
---|
| 7 | |
---|
| 8 | #define MAX_VERT_PROPS 20 |
---|
| 9 | |
---|
| 10 | #include "plyio.h" |
---|
| 11 | |
---|
| 12 | static void reallocTris(Vertex *v); |
---|
| 13 | |
---|
| 14 | struct PlyVertex { |
---|
| 15 | float x, y, z; |
---|
| 16 | float nx, ny, nz; |
---|
| 17 | uchar diff_r, diff_g, diff_b; |
---|
| 18 | float intensity; |
---|
| 19 | float std_dev; |
---|
| 20 | float confidence; |
---|
| 21 | }; |
---|
| 22 | |
---|
| 23 | |
---|
| 24 | struct PlyFace { |
---|
| 25 | uchar nverts; |
---|
| 26 | int *verts; |
---|
| 27 | }; |
---|
| 28 | |
---|
| 29 | |
---|
| 30 | |
---|
| 31 | static PlyProperty vert_prop_x = |
---|
| 32 | {"x", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 33 | static PlyProperty vert_prop_y = |
---|
| 34 | {"y", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 35 | static PlyProperty vert_prop_z = |
---|
| 36 | {"z", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 37 | static PlyProperty vert_prop_nx = |
---|
| 38 | {"nx", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 39 | static PlyProperty vert_prop_ny = |
---|
| 40 | {"ny", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 41 | static PlyProperty vert_prop_nz = |
---|
| 42 | {"nz", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 43 | static PlyProperty vert_prop_intens = |
---|
| 44 | {"intensity", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 45 | static PlyProperty vert_prop_std_dev = |
---|
| 46 | {"std_dev", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 47 | static PlyProperty vert_prop_confidence = |
---|
| 48 | {"confidence", PLY_FLOAT, PLY_FLOAT, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 49 | static PlyProperty vert_prop_diff_r = |
---|
| 50 | {"diffuse_red", PLY_UCHAR, PLY_UCHAR, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 51 | static PlyProperty vert_prop_diff_g = |
---|
| 52 | {"diffuse_green", PLY_UCHAR, PLY_UCHAR, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 53 | static PlyProperty vert_prop_diff_b = |
---|
| 54 | {"diffuse_blue", PLY_UCHAR, PLY_UCHAR, 0, 0, PLY_START_TYPE, PLY_START_TYPE, 0}; |
---|
| 55 | |
---|
| 56 | static PlyProperty vert_props[MAX_VERT_PROPS]; |
---|
| 57 | |
---|
| 58 | |
---|
| 59 | static PlyProperty face_props[] = { |
---|
| 60 | {"vertex_indices", PLY_INT, PLY_INT, 0, 1, PLY_UCHAR, PLY_UCHAR, 0}, |
---|
| 61 | }; |
---|
| 62 | |
---|
| 63 | |
---|
| 64 | /* dummy variables and associated macros for computing field offsets */ |
---|
| 65 | |
---|
| 66 | static PlyVertex *vert_dummy; |
---|
| 67 | #define voffset(field) ((char *) (&vert_dummy->field) - (char *) vert_dummy) |
---|
| 68 | static PlyFace *face_dummy; |
---|
| 69 | #define foffset(field) ((char *) (&face_dummy->field) - (char *) face_dummy) |
---|
| 70 | |
---|
| 71 | |
---|
| 72 | |
---|
| 73 | |
---|
| 74 | // |
---|
| 75 | // Read in data from the ply file |
---|
| 76 | // |
---|
| 77 | |
---|
| 78 | Mesh * |
---|
| 79 | readPlyFile(FILE *inFile) |
---|
| 80 | { |
---|
| 81 | int j; |
---|
| 82 | int nelems; |
---|
| 83 | char **elist; |
---|
| 84 | char *elem_name; |
---|
| 85 | int file_type; |
---|
| 86 | float version; |
---|
| 87 | int nprops, num_vert_props; |
---|
| 88 | int num_elems; |
---|
| 89 | PlyProperty **plist; |
---|
| 90 | |
---|
| 91 | face_props[0].offset = foffset(verts); |
---|
| 92 | face_props[0].count_offset = foffset(nverts); /* count offset */ |
---|
| 93 | |
---|
| 94 | PlyFile *ply = ply_read (inFile, &nelems, &elist); |
---|
| 95 | ply_get_info (ply, &version, &file_type); |
---|
| 96 | |
---|
| 97 | if (!ply) { |
---|
| 98 | fprintf(stderr, "Error in ply_read, aborting...\n"); |
---|
| 99 | exit(-1); |
---|
| 100 | } |
---|
| 101 | |
---|
| 102 | int nvp = 0; |
---|
| 103 | |
---|
| 104 | if (ply_is_valid_property(ply, "vertex", vert_prop_x.name)) { |
---|
| 105 | vert_props[nvp] = vert_prop_x; |
---|
| 106 | vert_props[nvp].offset = voffset(x); nvp++; |
---|
| 107 | } |
---|
| 108 | |
---|
| 109 | if (ply_is_valid_property(ply, "vertex", vert_prop_y.name)) { |
---|
| 110 | vert_props[nvp] = vert_prop_y; |
---|
| 111 | vert_props[nvp].offset = voffset(y); nvp++; |
---|
| 112 | } |
---|
| 113 | |
---|
| 114 | if (ply_is_valid_property(ply, "vertex", vert_prop_z.name)) { |
---|
| 115 | vert_props[nvp] = vert_prop_z; |
---|
| 116 | vert_props[nvp].offset = voffset(z); nvp++; |
---|
| 117 | } |
---|
| 118 | |
---|
| 119 | if (ply_is_valid_property(ply, "vertex", vert_prop_nx.name)) { |
---|
| 120 | vert_props[nvp] = vert_prop_nx; |
---|
| 121 | vert_props[nvp].offset = voffset(nx); nvp++; |
---|
| 122 | } |
---|
| 123 | |
---|
| 124 | if (ply_is_valid_property(ply, "vertex", vert_prop_ny.name)) { |
---|
| 125 | vert_props[nvp] = vert_prop_ny; |
---|
| 126 | vert_props[nvp].offset = voffset(ny); nvp++; |
---|
| 127 | } |
---|
| 128 | |
---|
| 129 | if (ply_is_valid_property(ply, "vertex", vert_prop_nz.name)) { |
---|
| 130 | vert_props[nvp] = vert_prop_nz; |
---|
| 131 | vert_props[nvp].offset = voffset(nz); nvp++; |
---|
| 132 | } |
---|
| 133 | |
---|
| 134 | if (ply_is_valid_property(ply, "vertex", vert_prop_intens.name)) { |
---|
| 135 | vert_props[nvp] = vert_prop_intens; |
---|
| 136 | vert_props[nvp].offset = voffset(intensity); nvp++; |
---|
| 137 | } |
---|
| 138 | |
---|
| 139 | if (ply_is_valid_property(ply, "vertex", vert_prop_std_dev.name)) { |
---|
| 140 | vert_props[nvp] = vert_prop_std_dev; |
---|
| 141 | vert_props[nvp].offset = voffset(std_dev); nvp++; |
---|
| 142 | } |
---|
| 143 | |
---|
| 144 | int hasConfidence = 0; |
---|
| 145 | if (ply_is_valid_property(ply, "vertex", vert_prop_confidence.name)) { |
---|
| 146 | vert_props[nvp] = vert_prop_confidence; |
---|
| 147 | vert_props[nvp].offset = voffset(confidence); nvp++; |
---|
| 148 | hasConfidence = 1; |
---|
| 149 | } |
---|
| 150 | |
---|
| 151 | if (ply_is_valid_property(ply, "vertex", "diffuse_red") && |
---|
| 152 | ply_is_valid_property(ply, "vertex", "diffuse_green") && |
---|
| 153 | ply_is_valid_property(ply, "vertex", "diffuse_blue")) |
---|
| 154 | { |
---|
| 155 | vert_props[nvp] = vert_prop_diff_r; |
---|
| 156 | vert_props[nvp].offset = voffset(diff_r); nvp++; |
---|
| 157 | vert_props[nvp] = vert_prop_diff_g; |
---|
| 158 | vert_props[nvp].offset = voffset(diff_g); nvp++; |
---|
| 159 | vert_props[nvp] = vert_prop_diff_b; |
---|
| 160 | vert_props[nvp].offset = voffset(diff_b); nvp++; |
---|
| 161 | } |
---|
| 162 | |
---|
| 163 | num_vert_props = nvp; |
---|
| 164 | |
---|
| 165 | Mesh *mesh = new Mesh; |
---|
| 166 | Vertex *vert; |
---|
| 167 | Triangle *tri; |
---|
| 168 | PlyVertex plyVert; |
---|
| 169 | PlyFace plyFace; |
---|
| 170 | |
---|
| 171 | for (int i = 0; i < nelems; i++) { |
---|
| 172 | |
---|
| 173 | /* get the description of the first element */ |
---|
| 174 | elem_name = elist[i]; |
---|
| 175 | plist = ply_get_element_description |
---|
| 176 | (ply, elem_name, &num_elems, &nprops); |
---|
| 177 | |
---|
| 178 | /* if we're on vertex elements, read them in */ |
---|
| 179 | if (equal_strings ("vertex", elem_name)) { |
---|
| 180 | |
---|
| 181 | mesh->numVerts = num_elems; |
---|
| 182 | mesh->verts = new Vertex[mesh->numVerts]; |
---|
| 183 | |
---|
| 184 | /* set up for getting vertex elements */ |
---|
| 185 | ply_get_element_setup (ply, elem_name, num_vert_props, vert_props); |
---|
| 186 | |
---|
| 187 | /* grab all the vertex elements */ |
---|
| 188 | for (j = 0; j < mesh->numVerts; j++) { |
---|
| 189 | ply_get_element (ply, (void *) &plyVert); |
---|
| 190 | vert = &mesh->verts[j]; |
---|
| 191 | vert->coord.x = plyVert.x; |
---|
| 192 | vert->coord.y = plyVert.y; |
---|
| 193 | vert->coord.z = plyVert.z; |
---|
| 194 | vert->confidence = plyVert.confidence; |
---|
| 195 | vert->index = j; |
---|
| 196 | } |
---|
| 197 | } |
---|
| 198 | |
---|
| 199 | if (equal_strings ("face", elem_name)) { |
---|
| 200 | |
---|
| 201 | ply_get_element_setup (ply, elem_name, 1, face_props); |
---|
| 202 | |
---|
| 203 | mesh->numTris = num_elems; |
---|
| 204 | |
---|
| 205 | if (mesh->numTris == 0) |
---|
| 206 | continue; |
---|
| 207 | |
---|
| 208 | mesh->tris = new Triangle[mesh->numTris]; |
---|
| 209 | |
---|
| 210 | // Assumes vertices preceed faces in the file! |
---|
| 211 | |
---|
| 212 | for (j = 0; j < mesh->numTris; j++) { |
---|
| 213 | ply_get_element (ply, (void *) &plyFace); |
---|
| 214 | tri = &mesh->tris[j]; |
---|
| 215 | tri->vert1 = &mesh->verts[plyFace.verts[0]]; |
---|
| 216 | tri->vert2 = &mesh->verts[plyFace.verts[1]]; |
---|
| 217 | tri->vert3 = &mesh->verts[plyFace.verts[2]]; |
---|
| 218 | free(plyFace.verts); |
---|
| 219 | } |
---|
| 220 | } |
---|
| 221 | } |
---|
| 222 | |
---|
| 223 | return mesh; |
---|
| 224 | } |
---|
| 225 | |
---|
| 226 | |
---|
| 227 | int |
---|
| 228 | writePlyFile(FILE *outFile, Mesh *mesh, int numVerts, int numTris) |
---|
| 229 | { |
---|
| 230 | int i, j; |
---|
| 231 | int nelems; |
---|
| 232 | char **elist; |
---|
| 233 | int file_type; |
---|
| 234 | float version; |
---|
| 235 | char *elem_name; |
---|
| 236 | int nprops, num_vert_props; |
---|
| 237 | int num_elems; |
---|
| 238 | PlyProperty **plist; |
---|
| 239 | int hasIntensity; |
---|
| 240 | int hasColor; |
---|
| 241 | int hasConfidence; |
---|
| 242 | int nvp; |
---|
| 243 | char *elem_names[] = {"vertex", "face"}; |
---|
| 244 | |
---|
| 245 | PlyFile *ply = ply_write(outFile, 2, elem_names, PLY_BINARY_BE); |
---|
| 246 | |
---|
| 247 | if (ply == NULL) |
---|
| 248 | return 0; |
---|
| 249 | |
---|
| 250 | |
---|
| 251 | nvp = 0; |
---|
| 252 | |
---|
| 253 | vert_props[nvp] = vert_prop_x; |
---|
| 254 | vert_props[nvp].offset = offsetof(PlyVertex,x); nvp++; |
---|
| 255 | vert_props[nvp] = vert_prop_y; |
---|
| 256 | vert_props[nvp].offset = offsetof(PlyVertex,y); nvp++; |
---|
| 257 | vert_props[nvp] = vert_prop_z; |
---|
| 258 | vert_props[nvp].offset = offsetof(PlyVertex,z); nvp++; |
---|
| 259 | |
---|
| 260 | vert_props[nvp] = vert_prop_confidence; |
---|
| 261 | vert_props[nvp].offset = offsetof(PlyVertex, confidence); nvp++; |
---|
| 262 | |
---|
| 263 | num_vert_props = nvp; |
---|
| 264 | |
---|
| 265 | face_props[0].offset = offsetof(PlyFace, verts); |
---|
| 266 | face_props[0].count_offset = offsetof(PlyFace, nverts); /* count offset */ |
---|
| 267 | |
---|
| 268 | ply_describe_element (ply, "vertex", numVerts, num_vert_props, vert_props); |
---|
| 269 | |
---|
| 270 | ply_describe_element (ply, "face", numTris, 1, face_props); |
---|
| 271 | |
---|
| 272 | ply_header_complete (ply); |
---|
| 273 | |
---|
| 274 | /* set up and write the vertex elements */ |
---|
| 275 | PlyVertex plyVert; |
---|
| 276 | Vertex *vert; |
---|
| 277 | |
---|
| 278 | ply_put_element_setup (ply, "vertex"); |
---|
| 279 | |
---|
| 280 | for (i = 0; i < mesh->numVerts; i++) { |
---|
| 281 | vert = &mesh->verts[i]; |
---|
| 282 | if (vert->index < 0) |
---|
| 283 | continue; |
---|
| 284 | |
---|
| 285 | plyVert.x = vert->coord.x; |
---|
| 286 | plyVert.y = vert->coord.y; |
---|
| 287 | plyVert.z = vert->coord.z; |
---|
| 288 | plyVert.confidence = vert->confidence; |
---|
| 289 | |
---|
| 290 | ply_put_element (ply, (void *) &plyVert); |
---|
| 291 | } |
---|
| 292 | |
---|
| 293 | PlyFace plyFace; |
---|
| 294 | Triangle *tri; |
---|
| 295 | int vertIndices[3]; |
---|
| 296 | |
---|
| 297 | ply_put_element_setup (ply, "face"); |
---|
| 298 | |
---|
| 299 | for (i = 0; i < mesh->numTris; i++) { |
---|
| 300 | tri = &mesh->tris[i]; |
---|
| 301 | // If the triangle has 3 unique points, and they |
---|
| 302 | // haven't been deleted by triedgecol, write it out... |
---|
| 303 | if (tri->vert1 != tri->vert2 && |
---|
| 304 | tri->vert1 != tri->vert3 && |
---|
| 305 | tri->vert2 != tri->vert3 && |
---|
| 306 | tri->vert1->index > -1 && |
---|
| 307 | tri->vert2->index > -1 && |
---|
| 308 | tri->vert3->index > -1) { |
---|
| 309 | |
---|
| 310 | plyFace.nverts = 3; |
---|
| 311 | vertIndices[0] = tri->vert1->index; |
---|
| 312 | vertIndices[1] = tri->vert2->index; |
---|
| 313 | vertIndices[2] = tri->vert3->index; |
---|
| 314 | plyFace.verts = (int *)vertIndices; |
---|
| 315 | |
---|
| 316 | ply_put_element (ply, (void *) &plyFace); |
---|
| 317 | } |
---|
| 318 | } |
---|
| 319 | |
---|
| 320 | /* close the PLY file */ |
---|
| 321 | ply_close (ply); |
---|
| 322 | |
---|
| 323 | return 1; |
---|
| 324 | } |
---|
| 325 | |
---|
| 326 | |
---|