/*! \brief
* \par Function Description
* This function reads a formatted text buffer describing an arc
* in the gEDA file format and initializes the corresponding object.
*
* Depending on the version of the file format the data extraction is
* performed differently : currently pre-20000704 and 20000704 on one
* hand and post-20000704 file format version on the other hand are supported.
* The version is specified in string pointed by <B>fileformat_ver</B>.
*
* To get information on the various file formats have a
* look to the fileformats.html document.
*
* The object is initialized with the functions #o_set_line_options() and #o_set_fill_options().
* The second one is only used to put initialize unused values for an arc as an arc can not be filled.
*
* The arc is allocated initialized with the function #o_arc_new().
*
* A negative or null radius is not allowed.
*
* \param [in] toplevel The TOPLEVEL object.
* \param [in] buf
* \param [in] release_ver
* \param [in] fileformat_ver
* \return
*/
OBJECT *o_arc_read (TOPLEVEL *toplevel, char buf[],
unsigned int release_ver, unsigned int fileformat_ver)
{
OBJECT *new_obj;
char type;
int x1, y1;
int radius;
int start_angle, end_angle;
int color;
int arc_width, arc_length, arc_space;
int arc_type;
int arc_end;
/*! \note
* Depending on the version of the file format used to describe this arc,
* the buffer is parsed differently. The unknown parameters of the less
* restrictive - the oldest - file format are set to common values
*/
if(release_ver <= VERSION_20000704) {
sscanf(buf, "%c %d %d %d %d %d %d", &type,
&x1, &y1, &radius, &start_angle, &end_angle, &color);
arc_width = 0;
arc_end = END_NONE;
arc_type = TYPE_SOLID;
arc_space = -1;
arc_length= -1;
} else {
sscanf(buf, "%c %d %d %d %d %d %d %d %d %d %d %d", &type,
&x1, &y1, &radius, &start_angle, &end_angle, &color,
&arc_width, &arc_end, &arc_type, &arc_length, &arc_space);
}
/* Error check */
if (radius <= 0) {
s_log_message (_("Found a zero radius arc [ %c %d, %d, %d, %d, %d, %d ]\n"),
type, x1, y1, radius, start_angle, end_angle, color);
}
if (color < 0 || color > MAX_COLORS) {
s_log_message(_("Found an invalid color [ %s ]\n"), buf);
s_log_message(_("Setting color to default color\n"));
color = DEFAULT_COLOR;
}
/* Allocation and initialization */
new_obj = o_arc_new(toplevel, OBJ_ARC, color,
x1, y1, radius, start_angle, end_angle);
o_set_line_options(toplevel, new_obj,
arc_end, arc_type, arc_width, arc_length,
arc_space);
o_set_fill_options(toplevel, new_obj,
FILLING_HOLLOW, -1, -1, -1,
-1, -1);
return new_obj;
}
/*! \brief
* \par Function Description
* This function creates a new object representing an arc.
*
* The values of the <B>o_current</B> pointed OBJECT are then copied to the new object.
*
* The arc, the line options are initialized whereas the fill options are
* initialized to passive values - as an arc can not be filled.
*
* \param [in] toplevel The TOPLEVEL object
* \param [in] o_current
* \return The new OBJECT
*/
OBJECT *o_arc_copy(TOPLEVEL *toplevel, OBJECT *o_current)
{
OBJECT *new_obj;
new_obj = o_arc_new (toplevel, OBJ_ARC, o_current->color,
o_current->arc->x, o_current->arc->y,
o_current->arc->width / 2,
o_current->arc->start_angle,
o_current->arc->end_angle);
o_set_line_options(toplevel, new_obj,
o_current->line_end, o_current->line_type,
o_current->line_width,
o_current->line_length, o_current->line_space);
o_set_fill_options(toplevel, new_obj,
FILLING_HOLLOW, -1, -1, -1, -1, -1);
return new_obj;
}
