demo/adg-demo.c

   1 #include <adg/adg.h>
   2 #include <math.h>
   3
   4 #include "demo.h"
   5
   6
   7 static AdgCanvas *      sample_canvas           (void);
   8 static AdgCanvas *      operations_canvas       (void);
   9 static AdgCanvas *      mapping_canvas          (void);
  10 static void             to_pdf                  (AdgWidget      *widget,
  11                                                  GtkWidget      *caller);
  12 static void             to_png                  (AdgWidget      *widget,
  13                                                  GtkWidget      *caller);
  14 static void             to_ps                   (AdgWidget      *widget,
  15                                                  GtkWidget      *caller);
  16
  17
  18 int
  19 main(gint argc, gchar **argv)
  20 {
  21     gchar *path;
  22     GtkBuilder *builder;
  23     GError *error;
  24     GtkWidget *window;
  25     GtkWidget *sample;
  26     GtkWidget *operations;
  27     GtkWidget *mapping;
  28
  29     gtk_init(&argc, &argv);
  30
  31     path = demo_find_data_file("adg-demo.ui");
  32     if (path == NULL) {
  33         g_print("adg-demo.ui not found!\n");
  34         return 1;
  35     }
  36
  37     builder = gtk_builder_new();
  38     error = NULL;
  39
  40     gtk_builder_add_from_file(builder, path, &error);
  41     if (error != NULL) {
  42         g_print("%s\n", error->message);
  43         return 2;
  44     }
  45
  46     window = (GtkWidget *) gtk_builder_get_object(builder, "wndMain");
  47
  48     sample = (GtkWidget *) gtk_builder_get_object(builder, "areaSample");
  49     adg_widget_set_canvas(ADG_WIDGET(sample), sample_canvas());
  50
  51     operations = (GtkWidget *) gtk_builder_get_object(builder, "areaOperations");
  52     adg_widget_set_canvas(ADG_WIDGET(operations), operations_canvas());
  53
  54     mapping = (GtkWidget *) gtk_builder_get_object(builder, "areaMapping");
  55     adg_widget_set_canvas(ADG_WIDGET(mapping), mapping_canvas());
  56
  57     /* Connect signals */
  58     g_signal_connect(window, "delete-event",
  59                      G_CALLBACK(gtk_main_quit), NULL);
  60     g_signal_connect(gtk_builder_get_object(builder, "btnQuit"),
  61                      "clicked", G_CALLBACK(gtk_main_quit), NULL);
  62     g_signal_connect_swapped(gtk_builder_get_object(builder, "btnPng"),
  63                              "clicked", G_CALLBACK(to_png), sample);
  64     g_signal_connect_swapped(gtk_builder_get_object(builder, "btnPdf"),
  65                              "clicked", G_CALLBACK(to_pdf), sample);
  66     g_signal_connect_swapped(gtk_builder_get_object(builder, "btnPs"),
  67                              "clicked", G_CALLBACK(to_ps), sample);
  68
  69     g_object_unref(builder);
  70
  71     gtk_widget_show_all(window);
  72     gtk_main();
  73
  74     return 0;
  75 }
  76
  77
  78 static AdgPath *        non_trivial_model       (void);
  79
  80
  81 /**********************************************
  82  * A sample mechanical part example
  83  **********************************************/
  84
  85 #define SQRT3   1.732050808
  86 #define CHAMFER 0.3
  87
  88 typedef struct _SampleData SampleData;
  89
  90 struct _SampleData {
  91     gdouble A, B, C;
  92     gdouble D1, D2, D3, D4, D5, D6, D7;
  93     gdouble RD34, RD56;
  94     gdouble LD2, LD3, LD5, LD6, LD7;
  95 };
  96
  97 static void     sample_get              (SampleData             *data);
  98 static AdgPath *sample_path             (const SampleData       *data);
  99 static void     sample_add_dimensions   (AdgCanvas              *canvas,
 100                                          const SampleData       *data);
 101 static void     sample_add_stuff        (AdgCanvas              *canvas,
 102                                          const SampleData       *data);
 103
 104
 105 static AdgCanvas *
 106 sample_canvas(void)
 107 {
 108     SampleData data;
 109     AdgPath *path;
 110     AdgCanvas *canvas;
 111     AdgContainer *container;
 112     AdgEntity *entity;
 113     AdgMatrix map;
 114
 115     sample_get(&data);
 116     path = sample_path(&data);
 117     canvas = adg_canvas_new();
 118     container = (AdgContainer *) canvas;
 119
 120     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(path)));
 121     adg_container_add(container, entity);
 122
 123     sample_add_dimensions(canvas, &data);
 124     sample_add_stuff(canvas, &data);
 125
 126     cairo_matrix_init_translate(&map, 100, 70);
 127     cairo_matrix_scale(&map, 6.883, 6.883);
 128     cairo_matrix_translate(&map, 0, 10);
 129     adg_entity_set_local_map(ADG_ENTITY(container), &map);
 130
 131     return canvas;
 132 }
 133
 134 static void
 135 sample_get(SampleData *data)
 136 {
 137     data->A = 52.3;
 138     data->B = 20.6;
 139     data->C = 2;
 140     data->D1 = 9.3;
 141     data->D2 = 6.5;
 142     data->D3 = 11.9;
 143     data->D4 = 6.5;
 144     data->D5 = 4.5;
 145     data->D6 = 7.2;
 146     data->D7 = 3;
 147     data->RD34 = 1;
 148     data->LD2 = 7;
 149     data->LD3 = 3.5;
 150     data->LD5 = 5;
 151     data->LD6 = 1;
 152     data->LD7 = 0.5;
 153 }
 154
 155 static AdgPath *
 156 sample_path(const SampleData *data)
 157 {
 158     AdgPath *path;
 159     double x, y;
 160     AdgSegment segment;
 161     AdgSegment *dup_segment;
 162     cairo_matrix_t matrix;
 163
 164     path = adg_path_new();
 165
 166     adg_path_move_to(path, 0, data->D1 / 2);
 167     adg_path_line_to(path, data->A - data->B - data->LD2, data->D1 / 2);
 168     y = (data->D1 - data->D2) / 2;
 169     adg_path_line_to(path, data->A - data->B - data->LD2 + y * SQRT3, data->D1 / 2 - y);
 170     adg_path_line_to(path, data->A - data->B, data->D2 / 2);
 171     adg_path_fillet(path, 0.4);
 172     adg_path_line_to(path, data->A - data->B, data->D3 / 2);
 173     adg_path_chamfer(path, CHAMFER, CHAMFER);
 174     adg_path_line_to(path, data->A - data->B + data->LD3, data->D3 / 2);
 175     adg_path_chamfer(path, CHAMFER, CHAMFER);
 176     adg_path_line_to(path, data->A - data->B + data->LD3, data->D4 / 2);
 177     adg_path_fillet(path, data->RD34);
 178     adg_path_line_to(path, data->A - data->C - data->LD5, data->D4 / 2);
 179     y = (data->D4 - data->D5) / 2;
 180     adg_path_line_to(path, data->A - data->C - data->LD5 + y, data->D4 / 2 - y);
 181     adg_path_line_to(path, data->A - data->C, data->D5 / 2);
 182     adg_path_fillet(path, 0.2);
 183     adg_path_line_to(path, data->A - data->C, data->D6 / 2);
 184     adg_path_fillet(path, 0.1);
 185     adg_path_line_to(path, data->A - data->C + data->LD6, data->D6 / 2);
 186     x = data->C - data->LD7 - data->LD6;
 187     y = x / SQRT3;
 188     adg_path_line_to(path, data->A - data->C + data->LD6 + x, data->D6 / 2 - y);
 189     adg_path_line_to(path, data->A - data->LD7, data->D7 / 2);
 190     adg_path_line_to(path, data->A, data->D7 / 2);
 191
 192     /* Build the rounded shape by duplicating the first segment of
 193      * the current path, reflecting it on the y=0 axis, reversing and
 194      * joining it the result to the original path */
 195     adg_trail_get_segment(ADG_TRAIL(path), &segment, 1);
 196     dup_segment = adg_segment_deep_dup(&segment);
 197     cpml_segment_reverse(dup_segment);
 198     adg_matrix_init_reflection(&matrix, 0);
 199     cpml_segment_transform(dup_segment, &matrix);
 200     dup_segment->data[0].header.type = CAIRO_PATH_LINE_TO;
 201
 202     adg_path_append_segment(path, dup_segment);
 203
 204     g_free(dup_segment);
 205
 206     adg_path_close(path);
 207     return path;
 208 }
 209
 210 static void
 211 sample_add_dimensions(AdgCanvas *canvas, const SampleData *data)
 212 {
 213     AdgLDim *ldim;
 214     double x, y;
 215
 216     /* NORTH */
 217
 218     /* LD2 */
 219     ldim = adg_ldim_new_full_explicit(data->A - data->B - data->LD2, -data->D1 / 2, data->A - data->B,
 220                                       -data->D3 / 2 + CHAMFER, ADG_DIR_UP, 0,
 221                                       -data->D3 / 2);
 222     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 223
 224     /* LD3 */
 225     ldim = adg_ldim_new_full_explicit(data->A - data->B, -data->D3 / 2 + CHAMFER, data->A - data->B + data->LD3,
 226                                       -data->D3 / 2 + CHAMFER, ADG_DIR_UP, 0,
 227                                       -data->D3 / 2);
 228     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 229
 230     /* SOUTH */
 231
 232     /* B */
 233     ldim = adg_ldim_new_full_explicit(data->A - data->B, data->D3 / 2 - CHAMFER, data->A, data->D7 / 2,
 234                                       ADG_DIR_DOWN, 0, data->D3 / 2);
 235     adg_dim_set_tolerances(ADG_DIM(ldim), NULL, "+0.1");
 236     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 237
 238     /* A */
 239     ldim = adg_ldim_new_full_explicit(0, data->D1 / 2, data->A, data->D7 / 2,
 240                                       ADG_DIR_DOWN, 0, data->D3 / 2);
 241     adg_dim_set_tolerances(ADG_DIM(ldim), "-0.05", "+0.05");
 242     adg_dim_set_level(ADG_DIM(ldim), 2);
 243     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 244
 245     /* EAST */
 246
 247     /* D3 */
 248     x = data->A - data->B + data->LD3 - CHAMFER;
 249     ldim = adg_ldim_new_full_explicit(x, -data->D3 / 2, x, data->D3 / 2,
 250                                       ADG_DIR_RIGHT, data->A, 0);
 251     adg_dim_set_tolerances(ADG_DIM(ldim), "-0.25", NULL);
 252     adg_dim_set_level(ADG_DIM(ldim), 5);
 253     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 254
 255     /* D6 */
 256     x = data->A - data->C + data->LD6;
 257     ldim = adg_ldim_new_full_explicit(x, -data->D6 / 2, x, data->D6 / 2,
 258                                       ADG_DIR_RIGHT, data->A, 0);
 259     adg_dim_set_tolerances(ADG_DIM(ldim), "-0.1", NULL);
 260     adg_dim_set_level(ADG_DIM(ldim), 4);
 261     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 262
 263     /* D4 */
 264     x = data->A - data->C - data->LD5;
 265     ldim = adg_ldim_new_full_explicit(x, -data->D4 / 2, x, data->D4 / 2,
 266                                       ADG_DIR_RIGHT, data->A, 0);
 267     adg_dim_set_level(ADG_DIM(ldim), 3);
 268     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 269
 270     /* D5 */
 271     x = data->A - data->C;
 272     ldim = adg_ldim_new_full_explicit(x, -data->D5 / 2, x, data->D5 / 2,
 273                                       ADG_DIR_RIGHT, data->A, 0);
 274     adg_dim_set_tolerances(ADG_DIM(ldim), "-0.1", NULL);
 275     adg_dim_set_level(ADG_DIM(ldim), 2);
 276     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 277
 278     /* D7 */
 279     ldim = adg_ldim_new_full_explicit(data->A, -data->D7 / 2, data->A, data->D7 / 2,
 280                                       ADG_DIR_RIGHT, data->A, 0);
 281     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 282
 283     /* WEST */
 284
 285     /* D1 */
 286     ldim = adg_ldim_new_full_explicit(0, -data->D1 / 2, 0, data->D1 / 2,
 287                                       ADG_DIR_LEFT, 0, 0);
 288     adg_dim_set_tolerances(ADG_DIM(ldim), "+0.05", "-0.05");
 289     adg_dim_set_level(ADG_DIM(ldim), 2);
 290     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 291
 292     /* D2 */
 293     y = (data->D1 - data->D2) / 2;
 294     x = data->A - data->B - data->LD2 + y * SQRT3;
 295     ldim = adg_ldim_new_full_explicit(x, -data->D2 / 2, x, data->D2 / 2,
 296                                       ADG_DIR_LEFT, 0, 0);
 297     adg_dim_set_tolerances(ADG_DIM(ldim), "-0.1", NULL);
 298     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(ldim));
 299 }
 300
 301 static void
 302 sample_add_stuff(AdgCanvas *canvas, const SampleData *data)
 303 {
 304     AdgToyText *toy_text;
 305     AdgMatrix map;
 306
 307     toy_text = adg_toy_text_new("Rotate the mouse wheel to zoom in and out");
 308     cairo_matrix_init_translate(&map, 0, data->D3 / 2);
 309     adg_entity_set_local_map(ADG_ENTITY(toy_text), &map);
 310     cairo_matrix_translate(&map, 10, 30 + 30 * 2);
 311     adg_entity_set_global_map(ADG_ENTITY(toy_text), &map);
 312     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(toy_text));
 313
 314     toy_text = adg_toy_text_new("Keep the wheel pressed while dragging the mouse to translate");
 315     cairo_matrix_init_translate(&map, 0, data->D3 / 2);
 316     adg_entity_set_local_map(ADG_ENTITY(toy_text), &map);
 317     cairo_matrix_init_translate(&map, 10, 50 + 30 * 2);
 318     adg_entity_set_global_map(ADG_ENTITY(toy_text), &map);
 319     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(toy_text));
 320 }
 321
 322
 323 #if defined(CAIRO_HAS_PNG_FUNCTIONS) || defined(CAIRO_HAS_PDF_SURFACE) || defined(CAIRO_HAS_PS_SURFACE)
 324
 325 /* Only needed if there is at least one supported surface */
 326 static void
 327 file_generated(GtkWidget *caller, const gchar *file)
 328 {
 329     GtkWindow *window;
 330     GtkWidget *dialog;
 331
 332     window = (GtkWindow *) gtk_widget_get_toplevel(caller);
 333     dialog = gtk_message_dialog_new_with_markup(window, GTK_DIALOG_MODAL,
 334                                                 GTK_MESSAGE_INFO,
 335                                                 GTK_BUTTONS_CLOSE,
 336                                                 "The requested operation generated\n"
 337                                                 "<b>%s</b> in the current directory.",
 338                                                 file);
 339     gtk_window_set_title(GTK_WINDOW(dialog), "Operation completed");
 340     gtk_dialog_run(GTK_DIALOG(dialog));
 341     gtk_widget_destroy(dialog);
 342 }
 343
 344 #endif
 345
 346 #if !defined(CAIRO_HAS_PNG_FUNCTIONS) || !defined(CAIRO_HAS_PDF_SURFACE) || !defined(CAIRO_HAS_PS_SURFACE)
 347
 348 /* Only needed if there is a missing surface */
 349 static void
 350 missing_feature(GtkWidget *caller, const gchar *feature)
 351 {
 352     GtkWindow *window;
 353     GtkWidget *dialog;
 354
 355     window = (GtkWindow *) gtk_widget_get_toplevel(caller);
 356     dialog = gtk_message_dialog_new(window, GTK_DIALOG_MODAL,
 357                                     GTK_MESSAGE_WARNING,
 358                                     GTK_BUTTONS_OK,
 359                                     "The provided cairo library\n"
 360                                     "was compiled with no %s support!",
 361                                     feature);
 362     gtk_window_set_title(GTK_WINDOW(dialog), "Missing feature");
 363     gtk_dialog_run(GTK_DIALOG(dialog));
 364     gtk_widget_destroy(dialog);
 365 }
 366
 367 #endif
 368
 369
 370 #ifdef CAIRO_HAS_PNG_FUNCTIONS
 371
 372 static void
 373 to_png(AdgWidget *widget, GtkWidget *caller)
 374 {
 375     cairo_surface_t *surface;
 376     cairo_t *cr;
 377
 378     surface = cairo_image_surface_create(CAIRO_FORMAT_ARGB32, 800, 600);
 379     cr = cairo_create(surface);
 380     cairo_surface_destroy(surface);
 381
 382     /* Rendering process */
 383     adg_entity_render(ADG_ENTITY(adg_widget_get_canvas(widget)), cr);
 384
 385     cairo_show_page(cr);
 386     cairo_surface_write_to_png(surface, "test.png");
 387     cairo_destroy(cr);
 388
 389     file_generated(caller, "test.png");
 390 }
 391
 392 #else
 393
 394 static void
 395 to_png(AdgWidget *widget, GtkWidget *caller)
 396 {
 397     missing_feature(caller, "PNG");
 398 }
 399
 400 #endif
 401
 402 #ifdef CAIRO_HAS_PDF_SURFACE
 403
 404 #include <cairo-pdf.h>
 405
 406 static void
 407 to_pdf(AdgWidget *widget, GtkWidget *caller)
 408 {
 409     cairo_surface_t *surface;
 410     cairo_t *cr;
 411
 412     surface = cairo_pdf_surface_create("test.pdf", 841, 595);
 413     cr = cairo_create(surface);
 414     cairo_surface_destroy(surface);
 415
 416     adg_entity_render(ADG_ENTITY(adg_widget_get_canvas(widget)), cr);
 417
 418     cairo_show_page(cr);
 419     cairo_destroy(cr);
 420
 421     file_generated(caller, "test.pdf");
 422 }
 423
 424 #else
 425
 426 static void
 427 to_pdf(AdgWidget *widget, GtkWidget *caller)
 428 {
 429     missing_feature(caller, "PDF");
 430 }
 431
 432 #endif
 433
 434 #ifdef CAIRO_HAS_PS_SURFACE
 435
 436 #include <cairo-ps.h>
 437
 438 static void
 439 to_ps(AdgWidget *widget, GtkWidget *caller)
 440 {
 441     cairo_surface_t *surface;
 442     cairo_t *cr;
 443
 444     /* Surface creation: A4 size */
 445     surface = cairo_ps_surface_create("test.ps", 841, 595);
 446     cairo_ps_surface_dsc_comment(surface,
 447                                  "%%Title: Automatic Drawing Generation (ADG) demo");
 448     cairo_ps_surface_dsc_comment(surface,
 449                                  "%%Copyright: Copyright (C) 2006-2009 Fontana Nicola");
 450     cairo_ps_surface_dsc_comment(surface, "%%Orientation: Portrait");
 451
 452     cairo_ps_surface_dsc_begin_setup(surface);
 453
 454     cairo_ps_surface_dsc_begin_page_setup(surface);
 455     cairo_ps_surface_dsc_comment(surface,
 456                                  "%%IncludeFeature: *PageSize A4");
 457
 458     cr = cairo_create(surface);
 459     cairo_surface_destroy(surface);
 460
 461     adg_entity_render(ADG_ENTITY(adg_widget_get_canvas(widget)), cr);
 462
 463     cairo_show_page(cr);
 464     cairo_destroy(cr);
 465
 466     file_generated(caller, "test.ps");
 467 }
 468
 469 #else
 470
 471 static void
 472 to_ps(AdgWidget *widget, GtkWidget *caller)
 473 {
 474     missing_feature(caller, "PostScript");
 475 }
 476
 477 #endif
 478
 479
 480 /**********************************************
 481  * Test case for basic operations,
 482  * such as chamfer and fillet
 483  **********************************************/
 484
 485 static AdgPath *        operations_chamfer      (const AdgPath  *path,
 486                                                  gdouble         delta1,
 487                                                  gdouble         delta2);
 488 static AdgPath *        operations_fillet       (const AdgPath  *path,
 489                                                  gdouble         radius);
 490
 491 static AdgCanvas *
 492 operations_canvas(void)
 493 {
 494     AdgPath *path, *chamfer_path, *fillet_path;
 495     AdgCanvas *canvas;
 496     AdgContainer *container;
 497     AdgEntity *entity;
 498     AdgMatrix map;
 499
 500     path = non_trivial_model();
 501     chamfer_path = operations_chamfer(path, 0.25, 0.25);
 502     fillet_path = operations_fillet(path, 0.20);
 503     canvas = adg_canvas_new();
 504
 505     /* Add the original shape */
 506     container = adg_container_new();
 507     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(container));
 508
 509     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(path)));
 510     adg_container_add(container, entity);
 511
 512     entity = ADG_ENTITY(adg_toy_text_new("Original shape"));
 513     cairo_matrix_init_translate(&map, 5, 10);
 514     adg_entity_set_local_map(entity, &map);
 515     cairo_matrix_init_translate(&map, -50, 20);
 516     adg_entity_set_global_map(entity, &map);
 517     adg_container_add(ADG_CONTAINER(canvas), entity);
 518
 519     /* Add the shape with 0.25x0.25 chamfer */
 520     container = adg_container_new();
 521     cairo_matrix_init_translate(&map, 15, 0);
 522     adg_entity_set_local_map(ADG_ENTITY(container), &map);
 523     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(container));
 524
 525     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(chamfer_path)));
 526     adg_container_add(container, entity);
 527
 528     entity = ADG_ENTITY(adg_toy_text_new("Shape with 0.25x0.25 chamfer"));
 529     cairo_matrix_init_translate(&map, 5, 10);
 530     adg_entity_set_local_map(entity, &map);
 531     cairo_matrix_init_translate(&map, -120, 20);
 532     adg_entity_set_global_map(entity, &map);
 533     adg_container_add(container, entity);
 534
 535     /* Add the shape with fillets with 0.20 of radius */
 536     container = adg_container_new();
 537     cairo_matrix_init_translate(&map, 30, 0);
 538     adg_entity_set_local_map(ADG_ENTITY(container), &map);
 539     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(container));
 540
 541     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(fillet_path)));
 542     adg_container_add(container, entity);
 543
 544     entity = ADG_ENTITY(adg_toy_text_new("Shape with R=20 fillet"));
 545     cairo_matrix_init_translate(&map, 5, 10);
 546     adg_entity_set_local_map(entity, &map);
 547     cairo_matrix_init_translate(&map, -90, 20);
 548     adg_entity_set_global_map(entity, &map);
 549     adg_container_add(container, entity);
 550
 551     /* Set a decent start position and zoom */
 552     cairo_matrix_init_translate(&map, 10, -140);
 553     cairo_matrix_scale(&map, 15, 15);
 554     cairo_matrix_translate(&map, 0, 10);
 555     adg_entity_set_local_map(ADG_ENTITY(canvas), &map);
 556
 557     return canvas;
 558 }
 559
 560 static AdgPath *
 561 operations_chamfer(const AdgPath *model, gdouble delta1, gdouble delta2)
 562 {
 563     AdgPath *path;
 564     CpmlSegment segment;
 565     CpmlPrimitive primitive;
 566
 567     path = adg_path_new();
 568     adg_trail_get_segment(ADG_TRAIL(model), &segment, 1);
 569     cpml_primitive_from_segment(&primitive, &segment);
 570
 571     adg_path_move_to(path, (primitive.org)->point.x, (primitive.org)->point.y);
 572
 573     do {
 574         adg_path_append_primitive(path, &primitive);
 575         if (primitive.data[0].header.type == CAIRO_PATH_LINE_TO)
 576             adg_path_chamfer(path, delta1, delta2);
 577     } while (cpml_primitive_next(&primitive));
 578
 579     return path;
 580 }
 581
 582 static AdgPath *
 583 operations_fillet(const AdgPath *model, gdouble radius)
 584 {
 585     AdgPath *path;
 586     CpmlSegment segment;
 587     CpmlPrimitive primitive;
 588
 589     path = adg_path_new();
 590     adg_trail_get_segment(ADG_TRAIL(model), &segment, 1);
 591     cpml_primitive_from_segment(&primitive, &segment);
 592
 593     adg_path_move_to(path, (primitive.org)->point.x, (primitive.org)->point.y);
 594
 595     do {
 596         adg_path_append_primitive(path, &primitive);
 597         if (primitive.data[0].header.type == CAIRO_PATH_LINE_TO)
 598             adg_path_fillet(path, radius);
 599     } while (cpml_primitive_next(&primitive));
 600
 601     return path;
 602 }
 603
 604
 605 /**********************************************
 606  * Test case for mapping transformations,
 607  * either on the local and global map
 608  **********************************************/
 609
 610 static AdgCanvas *
 611 mapping_canvas(void)
 612 {
 613     AdgPath *path;
 614     AdgCanvas *canvas;
 615     AdgContainer *container;
 616     AdgEntity *entity;
 617     AdgMatrix map;
 618
 619     path = non_trivial_model();
 620     canvas = adg_canvas_new();
 621
 622     /* Add the original shape */
 623     container = adg_container_new();
 624     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(container));
 625
 626     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(path)));
 627     adg_container_add(container, entity);
 628
 629     entity = ADG_ENTITY(adg_toy_text_new("Original shape"));
 630     cairo_matrix_init_translate(&map, -50, 20);
 631     adg_entity_set_global_map(entity, &map);
 632     cairo_matrix_init_translate(&map, 5, 10);
 633     adg_entity_set_local_map(entity, &map);
 634     adg_container_add(ADG_CONTAINER(canvas), entity);
 635
 636     /* Original shape with global rotated by 90 and local translated x+=10 */
 637     container = adg_container_new();
 638     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(container));
 639     cairo_matrix_init_translate(&map, 15, 0);
 640     adg_entity_set_local_map(ADG_ENTITY(container), &map);
 641
 642     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(path)));
 643     cairo_matrix_init_rotate(&map, M_PI_2);
 644     adg_entity_set_global_map(entity, &map);
 645     cairo_matrix_init_translate(&map, 10, 0);
 646     adg_entity_set_local_map(entity, &map);
 647     adg_container_add(container, entity);
 648
 649     entity = ADG_ENTITY(adg_toy_text_new("Global map rotated by 90"));
 650     cairo_matrix_init_translate(&map, -120, 20);
 651     adg_entity_set_global_map(entity, &map);
 652     cairo_matrix_init_translate(&map, 5, 10);
 653     adg_entity_set_local_map(entity, &map);
 654     adg_container_add(container, entity);
 655
 656     /* Original shape with local translated x+=10 and rotated by 90 */
 657     container = adg_container_new();
 658     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(container));
 659     cairo_matrix_init_translate(&map, 30, 0);
 660     adg_entity_set_local_map(ADG_ENTITY(container), &map);
 661
 662     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(path)));
 663     cairo_matrix_init_translate(&map, 10, 0);
 664     cairo_matrix_rotate(&map, M_PI_2);
 665     adg_entity_set_local_map(entity, &map);
 666     adg_container_add(container, entity);
 667
 668     entity = ADG_ENTITY(adg_toy_text_new("Local map rotated by 90"));
 669     cairo_matrix_init_translate(&map, -120, 20);
 670     adg_entity_set_global_map(entity, &map);
 671     cairo_matrix_init_translate(&map, 5, 10);
 672     adg_entity_set_local_map(entity, &map);
 673     adg_container_add(container, entity);
 674
 675     /* Original shape with global map scaled by 0.5 */
 676     container = adg_container_new();
 677     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(container));
 678     cairo_matrix_init_translate(&map, 3.5, 15);
 679     adg_entity_set_local_map(ADG_ENTITY(container), &map);
 680
 681     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(path)));
 682     cairo_matrix_init_scale(&map, 0.5, 0.5);
 683     adg_entity_set_global_map(entity, &map);
 684     adg_container_add(container, entity);
 685
 686     entity = ADG_ENTITY(adg_toy_text_new("Global map scaled by 0.5"));
 687     cairo_matrix_init_translate(&map, -100, 20);
 688     adg_entity_set_global_map(entity, &map);
 689     cairo_matrix_init_translate(&map, 2.5, 5);
 690     adg_entity_set_local_map(entity, &map);
 691     adg_container_add(container, entity);
 692
 693     /* Original shape with local map scaled by 0.5 */
 694     container = adg_container_new();
 695     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(container));
 696     cairo_matrix_init_translate(&map, 18, 15);
 697     adg_entity_set_local_map(ADG_ENTITY(container), &map);
 698
 699     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(path)));
 700     cairo_matrix_init_scale(&map, 0.5, 0.5);
 701     adg_entity_set_local_map(entity, &map);
 702     adg_container_add(container, entity);
 703
 704     entity = ADG_ENTITY(adg_toy_text_new("Local map scaled by 0.5"));
 705     cairo_matrix_init_translate(&map, -100, 20);
 706     adg_entity_set_global_map(entity, &map);
 707     cairo_matrix_init_translate(&map, 2.5, 5);
 708     adg_entity_set_local_map(entity, &map);
 709     adg_container_add(container, entity);
 710
 711     /* Original shape with global and local maps scaled by 0.5 */
 712     container = adg_container_new();
 713     adg_container_add(ADG_CONTAINER(canvas), ADG_ENTITY(container));
 714     cairo_matrix_init_translate(&map, 33, 15);
 715     adg_entity_set_local_map(ADG_ENTITY(container), &map);
 716
 717     entity = ADG_ENTITY(adg_stroke_new(ADG_TRAIL(path)));
 718     cairo_matrix_init_scale(&map, 0.5, 0.5);
 719     adg_entity_set_global_map(entity, &map);
 720     adg_entity_set_local_map(entity, &map);
 721     adg_container_add(container, entity);
 722
 723     entity = ADG_ENTITY(adg_toy_text_new("Local&global scaled by 0.5"));
 724     cairo_matrix_init_translate(&map, -130, 20);
 725     adg_entity_set_global_map(entity, &map);
 726     cairo_matrix_init_translate(&map, 2.5, 5);
 727     adg_entity_set_local_map(entity, &map);
 728     adg_container_add(container, entity);
 729
 730     /* Set a decent start position and zoom */
 731     cairo_matrix_init_translate(&map, 10, -140);
 732     cairo_matrix_scale(&map, 15, 15);
 733     cairo_matrix_translate(&map, 0, 10);
 734     adg_entity_set_local_map(ADG_ENTITY(canvas), &map);
 735
 736     return canvas;
 737 }
 738
 739
 740 /**********************************************
 741  * Non specific test related stuff
 742  **********************************************/
 743
 744 static AdgPath *
 745 non_trivial_model()
 746 {
 747     AdgPath *path = adg_path_new();
 748
 749     adg_path_move_to(path,  2,  0);
 750     adg_path_line_to(path,  0,  5);
 751     adg_path_line_to(path,  2,  2);
 752     adg_path_line_to(path,  0,  8);
 753     adg_path_line_to(path,  2,  8);
 754     adg_path_line_to(path,  2, 10);
 755     adg_path_line_to(path,  3, 10);
 756     adg_path_line_to(path, 10,  9);
 757     adg_path_line_to(path,  5,  5);
 758     adg_path_line_to(path,  3,  0);
 759     adg_path_close(path);
 760
 761     return path;
 762 }