void splinepoint_deleting(F_spline *spline, F_point *previous_point, F_point *selected_point) { F_point *next_point; F_sfactor *s_prev_point, *selected_sfactor; next_point = selected_point->next; set_temp_cursor(wait_cursor); clean_up(); set_last_prevpoint(previous_point); /* delete it and redraw underlying objects */ list_delete_spline(&objects.splines, spline); draw_spline(spline, ERASE); redisplay_spline(spline); if (previous_point == NULL) { spline->points = next_point; if (open_spline(spline)) { selected_sfactor = spline->sfactors->next; spline->sfactors->next = selected_sfactor->next; } else { selected_sfactor = spline->sfactors; spline->sfactors = spline->sfactors->next; } } else { previous_point->next = next_point; if ((next_point == NULL) && (open_spline(spline))) previous_point = prev_point(spline->points, previous_point); s_prev_point = search_sfactor(spline,previous_point); selected_sfactor = s_prev_point->next; s_prev_point->next = s_prev_point->next->next; } /* put it back in the list and draw the new spline */ list_add_spline(&objects.splines, spline); /* redraw it and anything on top of it */ redisplay_spline(spline); set_action_object(F_DELETE_POINT, O_SPLINE); set_latestspline(spline); set_last_selectedpoint(selected_point); set_last_selectedsfactor(selected_sfactor); set_last_nextpoint(next_point); set_modifiedflag(); reset_cursor(); }
void toggle_open_closed_spline(F_spline *spline, F_point *previous_point, F_point *selected_point) { F_point *last_pt; F_sfactor *last_sfactor, *previous_sfactor, *selected_sfactor; if (spline->points->next == NULL || spline->points->next->next == NULL) { put_msg("Not enough points for a spline"); beep(); return; /* less than 3 points - don't close the spline */ } last_pt = last_point(spline->points); last_sfactor = search_sfactor(spline, last_pt); if (previous_point == NULL) { previous_sfactor = NULL; selected_sfactor = spline->sfactors; } else { previous_sfactor = search_sfactor(spline, previous_point); selected_sfactor = previous_sfactor->next; set_last_tension(selected_sfactor->s, previous_sfactor->s); } draw_spline(spline, ERASE); if (closed_spline(spline)) { if (spline->points != selected_point) { last_pt->next = spline->points; last_sfactor->next = spline->sfactors; previous_point->next = NULL; previous_sfactor->next = NULL; previous_sfactor->s = S_SPLINE_ANGULAR; spline->points = selected_point; spline->sfactors = selected_sfactor; } else { last_sfactor->s = S_SPLINE_ANGULAR; } spline->sfactors->s = S_SPLINE_ANGULAR; spline->type = (x_spline(spline)) ? T_OPEN_XSPLINE : (int_spline(spline)) ? T_OPEN_INTERP : T_OPEN_APPROX; clean_up(); } else { int type_tmp; double s_tmp; if(int_spline(spline)) { s_tmp = S_SPLINE_INTERP; type_tmp = T_CLOSED_INTERP; } else if (x_spline(spline)) { s_tmp = S_SPLINE_INTERP; type_tmp = T_CLOSED_XSPLINE; } else { s_tmp = S_SPLINE_APPROX; type_tmp = T_CLOSED_APPROX; } spline->sfactors->s = last_sfactor->s = s_tmp; spline->type = type_tmp; clean_up(); set_last_arrows(spline->for_arrow, spline->back_arrow); spline->back_arrow = spline->for_arrow = NULL; } draw_spline(spline, PAINT); set_action_object(F_OPEN_CLOSE, O_SPLINE); set_last_selectedpoint(spline->points); set_last_prevpoint(NULL); set_latestspline(spline); set_modifiedflag(); }