static void tangent_normal_line(int x, int y, float vx, float vy) { int dx, dy, xl, yl, xr, yr; F_line *line; dx = round(vx); dy = round(vy); xl = x - dx; yl = y - dy; xr = x + dx; yr = y + dy; if ((first_point = create_point()) == NULL) return; cur_point = first_point; first_point->x = xl; first_point->y = yl; first_point->next = NULL; append_point(x, y, &cur_point); append_point(xr, yr, &cur_point); if ((line = create_line()) == NULL) return; /* an error occured */ line->type = T_POLYLINE; line->style = cur_linestyle; line->thickness = cur_linewidth; line->pen_color = cur_pencolor; line->fill_color = cur_fillcolor; line->depth = cur_depth; line->pen_style = -1; line->join_style = cur_joinstyle; line->cap_style = cur_capstyle; line->fill_style = cur_fillstyle; line->style_val = cur_styleval * (cur_linewidth + 1) / 2; line->points = first_point; /* polyline; draw any arrows */ if (autoforwardarrow_mode) line->for_arrow = forward_arrow(); /* arrow will be drawn in draw_line below */ if (autobackwardarrow_mode) line->back_arrow = backward_arrow(); /* arrow will be drawn in draw_line below */ draw_line(line, PAINT); /* draw final */ add_line(line); toggle_linemarker(line); }
void read_points_from_file(const char * file_name, AllPoints *all_points) { FILE *fp; char buffer[BUFFER_SIZE]; if ((fp = fopen(file_name, "r")) == NULL) { printf(" could not open input file %s\n", file_name); exit(-1); } while (fgets(buffer, BUFFER_SIZE, fp)) { // read input point coordinates int x = 0; int y = 0; sscanf(buffer, "%d %d", &x, &y); append_point(all_points, x, y); } fclose(fp); if (all_points->number_of_points >= MAX_POINTS) { printf(" too many points in file\n", file_name); exit(-1); } }
void get_intermediatepoint(int x, int y, int shift) { /* in freehand mode call unconstrained_line explicitely to move the mouse */ if (freehand_line) { unconstrained_line(x,y); /* pointer must move by at least freehand_resolution in any direction */ if (abs(fix_x-cur_x) < appres.freehand_resolution && (abs(fix_y-cur_y) < appres.freehand_resolution)) return; } else { /* otherwise call the (possibly) constrained movement procedure */ (*canvas_locmove_proc) (x, y); } /* don't allow coincident consecutive points */ if (fix_x == cur_x && fix_y == cur_y) return; num_point++; fix_x = cur_x; fix_y = cur_y; elastic_line(); if (cur_cursor != null_cursor) { set_cursor(null_cursor); } if (shift && num_point > 2) { F_point *p; num_point -= 2; p = prev_point(first_point, cur_point); p->next = NULL; /* erase the newest segment */ pw_vector(canvas_win, fix_x, fix_y, cur_point->x, cur_point->y, INV_PAINT, 1, RUBBER_LINE, 0.0, DEFAULT); /* and segment drawn before */ pw_vector(canvas_win, p->x, p->y, cur_point->x, cur_point->y, INV_PAINT, 1, RUBBER_LINE, 0.0, DEFAULT); /* and draw new elastic segment */ pw_vector(canvas_win, fix_x, fix_y, p->x, p->y, PAINT, 1, RUBBER_LINE, 0.0, DEFAULT); fix_x = p->x; fix_y = p->y; free_points(cur_point); cur_point = p; } else { append_point(fix_x, fix_y, &cur_point); } if (num_point == min_num_points - 1) { if (freehand_line) set_mousefun("", "final point", "cancel", "del point", "", ""); else set_mousefun("next point", "final point", "cancel", "del point", "", ""); draw_mousefun_canvas(); canvas_middlebut_proc = (FCallBack)canvas_middlebut_save; } }
virtual void move_to(P p) { if ( !current_loop.empty() ) { all_loops.push_back(current_loop); current_loop.clear(); } std::cout << "pen UP \n"; std::cout << " move to " << p.x << " , " << p.y << "\n"; std::cout << "pen DOWN \n"; append_point(p); }
//virtual void line_comment(P c1, P c2, P to) {} virtual void line_to(P p) { std::cout << last_point.x << " , " << last_point.y << " lineto " << p.x << " , " << p.y << "\n"; append_point(p); }
int main (int argc, char *argv[]) { GtkWidget *window; GtkWidget *widget, *vbox, *bbox, *button, *viewport, *image; ChamplainView *view; ChamplainMarkerLayer *layer; ClutterActor *scale; ChamplainLicense *license_actor; if (gtk_clutter_init (&argc, &argv) != CLUTTER_INIT_SUCCESS) return 1; /* create the main, top level, window */ window = gtk_window_new (GTK_WINDOW_TOPLEVEL); /* give the window a 10px wide border */ gtk_container_set_border_width (GTK_CONTAINER (window), 10); /* give it the title */ gtk_window_set_title (GTK_WINDOW (window), "libchamplain Gtk+ demo"); /* Connect the destroy event of the window with our on_destroy function * When the window is about to be destroyed we get a notificaiton and * stop the main GTK loop */ g_signal_connect (G_OBJECT (window), "destroy", G_CALLBACK (on_destroy), NULL); vbox = gtk_box_new (GTK_ORIENTATION_VERTICAL, 10); widget = gtk_champlain_embed_new (); view = gtk_champlain_embed_get_view (GTK_CHAMPLAIN_EMBED (widget)); clutter_actor_set_reactive (CLUTTER_ACTOR (view), TRUE); g_signal_connect (view, "button-release-event", G_CALLBACK (mouse_click_cb), view); g_object_set (G_OBJECT (view), "kinetic-mode", TRUE, "zoom-level", 5, NULL); g_object_set_data (G_OBJECT (view), "window", window); scale = champlain_scale_new (); champlain_scale_connect_view (CHAMPLAIN_SCALE (scale), view); /* align to the bottom left */ clutter_actor_set_x_expand (scale, TRUE); clutter_actor_set_y_expand (scale, TRUE); clutter_actor_set_x_align (scale, CLUTTER_ACTOR_ALIGN_START); clutter_actor_set_y_align (scale, CLUTTER_ACTOR_ALIGN_END); clutter_actor_add_child (CLUTTER_ACTOR (view), scale); license_actor = champlain_view_get_license_actor (view); champlain_license_set_extra_text (license_actor, "Don't eat cereals with orange juice\nIt tastes bad"); champlain_view_center_on (CHAMPLAIN_VIEW (view), 45.466, -73.75); layer = create_marker_layer (view, &path); champlain_view_add_layer (view, CHAMPLAIN_LAYER (path)); champlain_view_add_layer (view, CHAMPLAIN_LAYER (layer)); path_layer = champlain_path_layer_new (); /* Cheap approx of Highway 10 */ append_point (path_layer, 45.4095, -73.3197); append_point (path_layer, 45.4104, -73.2846); append_point (path_layer, 45.4178, -73.2239); append_point (path_layer, 45.4176, -73.2181); append_point (path_layer, 45.4151, -73.2126); append_point (path_layer, 45.4016, -73.1926); append_point (path_layer, 45.3994, -73.1877); append_point (path_layer, 45.4000, -73.1815); append_point (path_layer, 45.4151, -73.1218); champlain_view_add_layer (view, CHAMPLAIN_LAYER (path_layer)); gtk_widget_set_size_request (widget, 640, 481); bbox = gtk_box_new (GTK_ORIENTATION_HORIZONTAL, 10); button = gtk_button_new (); image = gtk_image_new_from_icon_name ("zoom-in", GTK_ICON_SIZE_BUTTON); gtk_button_set_image (GTK_BUTTON (button), image); gtk_button_set_label (GTK_BUTTON (button), "Zoom In"); g_signal_connect (button, "clicked", G_CALLBACK (zoom_in), view); gtk_container_add (GTK_CONTAINER (bbox), button); button = gtk_button_new (); image = gtk_image_new_from_icon_name ("zoom-out", GTK_ICON_SIZE_BUTTON); gtk_button_set_image (GTK_BUTTON (button), image); gtk_button_set_label (GTK_BUTTON (button), "Zoom Out"); g_signal_connect (button, "clicked", G_CALLBACK (zoom_out), view); gtk_container_add (GTK_CONTAINER (bbox), button); button = gtk_toggle_button_new_with_label ("Markers"); gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), TRUE); g_signal_connect (button, "toggled", G_CALLBACK (toggle_layer), layer); gtk_container_add (GTK_CONTAINER (bbox), button); button = gtk_toggle_button_new_with_label ("Toggle wrap"); gtk_toggle_button_set_active (GTK_TOGGLE_BUTTON (button), champlain_view_get_horizontal_wrap (view)); g_signal_connect (button, "toggled", G_CALLBACK (toggle_wrap), view); gtk_container_add (GTK_CONTAINER (bbox), button); button = gtk_combo_box_new (); build_combo_box (GTK_COMBO_BOX (button)); gtk_combo_box_set_active (GTK_COMBO_BOX (button), 0); g_signal_connect (button, "changed", G_CALLBACK (map_source_changed), view); gtk_container_add (GTK_CONTAINER (bbox), button); button = gtk_spin_button_new_with_range (0, 20, 1); gtk_spin_button_set_value (GTK_SPIN_BUTTON (button), champlain_view_get_zoom_level (view)); g_signal_connect (button, "changed", G_CALLBACK (zoom_changed), view); g_signal_connect (view, "notify::zoom-level", G_CALLBACK (map_zoom_changed), button); gtk_container_add (GTK_CONTAINER (bbox), button); button = gtk_button_new (); image = gtk_image_new_from_icon_name ("list-add", GTK_ICON_SIZE_BUTTON); gtk_button_set_image (GTK_BUTTON (button), image); g_signal_connect (button, "clicked", G_CALLBACK (add_clicked), view); gtk_container_add (GTK_CONTAINER (bbox), button); button = gtk_button_new (); image = gtk_image_new_from_icon_name ("camera-photo-symbolic", GTK_ICON_SIZE_BUTTON); gtk_button_set_image (GTK_BUTTON (button), image); g_signal_connect (button, "clicked", G_CALLBACK (export_png), view); gtk_container_add (GTK_CONTAINER (bbox), button); button = gtk_image_new (); gtk_widget_set_size_request (button, 22, -1); g_signal_connect (view, "notify::state", G_CALLBACK (view_state_changed), button); gtk_box_pack_end (GTK_BOX (bbox), button, FALSE, FALSE, 0); viewport = gtk_frame_new (NULL); gtk_container_add (GTK_CONTAINER (viewport), widget); gtk_box_pack_start (GTK_BOX (vbox), bbox, FALSE, FALSE, 0); gtk_container_add (GTK_CONTAINER (vbox), viewport); /* and insert it into the main window */ gtk_container_add (GTK_CONTAINER (window), vbox); /* make sure that everything, window and label, are visible */ gtk_widget_show_all (window); /* start the main loop */ gtk_main (); return 0; }
void create_lineobject(int x, int y) { F_line *line; F_compound *comp; int dot; if (num_point == 0) { if ((first_point = create_point()) == NULL) { line_drawing_selected(); draw_mousefun_canvas(); return; } cur_point = first_point; first_point->x = fix_x = cur_x = x; first_point->y = fix_y = cur_y = y; first_point->next = NULL; num_point++; } else if (x != fix_x || y != fix_y) { get_intermediatepoint(x, y, 0); } /* dimension line must have 2 different points */ if (dimension_line && first_point->x == x && first_point->y == y) return; dot = (num_point == 1); elastic_line(); /* erase any length info if appres.showlengths is true */ erase_lengths(); if ((line = create_line()) == NULL) { line_drawing_selected(); draw_mousefun_canvas(); return; } line->type = T_POLYLINE; line->style = cur_linestyle; line->thickness = cur_linewidth; line->pen_color = cur_pencolor; line->fill_color = cur_fillcolor; line->depth = cur_depth; line->pen_style = -1; line->join_style = cur_joinstyle; line->cap_style = cur_capstyle; line->fill_style = cur_fillstyle; line->style_val = cur_styleval * (cur_linewidth + 1) / 2; line->points = first_point; if (!dot) { if (cur_mode == F_POLYGON) { /* close off polygon */ line->type = T_POLYGON; num_point++; append_point(first_point->x, first_point->y, &cur_point); elastic_line(); fix_x = first_point->x; fix_y = first_point->y; elastic_line(); /* fix last elastic line */ } else { /* polyline; draw any arrows */ if (autoforwardarrow_mode && !dimension_line) line->for_arrow = forward_arrow(); /* arrow will be drawn in draw_line below */ if (autobackwardarrow_mode && !dimension_line) line->back_arrow = backward_arrow(); /* arrow will be drawn in draw_line below */ } cur_x = fix_x; cur_y = fix_y; elastic_moveline(first_point); /* erase temporary outline */ } if (dimension_line) { comp = create_dimension_line(line, True); reset_action_on(); /* this signals redisplay_curobj() not to refresh */ /* draw it and anything on top of it */ redisplay_compound(comp); } else { add_line(line); reset_action_on(); /* this signals redisplay_curobj() not to refresh */ /* draw it and anything on top of it */ redisplay_line(line); } line_drawing_selected(); if (!edit_remember_dimline_mode) draw_mousefun_canvas(); }