/*! \brief rotate a net object around a centerpoint
* \par Function Description
* This function rotates a net \a object around the point
* (\a world_centerx, \a world_centery).
*
* \param [in] toplevel The TOPLEVEL object
* \param [in] world_centerx x-coord of the rotation center
* \param [in] world_centery y-coord of the rotation center
* \param [in] angle The angle to rotat the net object
* \param [in] object The net object
* \note only steps of 90 degrees are allowed for the \a angle
*/
void geda_net_object_rotate (TOPLEVEL *toplevel,
int world_centerx, int world_centery, int angle,
OBJECT *object)
{
int newx, newy;
g_return_if_fail (object != NULL);
g_return_if_fail (object->line != NULL);
g_return_if_fail (object->type == OBJ_NET);
if (angle == 0)
return;
/* translate object to origin */
geda_net_object_translate (object, -world_centerx, -world_centery);
geda_point_rotate_90 (object->line->x[0], object->line->y[0], angle,
&newx, &newy);
object->line->x[0] = newx;
object->line->y[0] = newy;
geda_point_rotate_90 (object->line->x[1], object->line->y[1], angle,
&newx, &newy);
object->line->x[1] = newx;
object->line->y[1] = newy;
geda_net_object_translate (object, world_centerx, world_centery);
}
/*! \brief Rotate BOX OBJECT using WORLD coordinates.
* \par Function Description
* The function #o_box_rotate_world() rotate the box described by
* <B>*object</B> around the (<B>world_centerx</B>, <B>world_centery</B>) point by
* <B>angle</B> degrees.
* The center of rotation is in world unit.
*
* \param [in] toplevel The TOPLEVEL object.
* \param [in] world_centerx Rotation center x coordinate in WORLD units.
* \param [in] world_centery Rotation center y coordinate in WORLD units.
* \param [in] angle Rotation angle in degrees (See note below).
* \param [in,out] object BOX OBJECT to rotate.
*
*/
void geda_box_object_rotate (TOPLEVEL *toplevel,
int world_centerx, int world_centery, int angle,
OBJECT *object)
{
int newx1, newy1;
int newx2, newy2;
g_return_if_fail (object != NULL);
g_return_if_fail (object->box != NULL);
g_return_if_fail (object->type == OBJ_BOX);
/*! \note
* Only 90 degree multiple and positive angles are allowed.
*/
/* angle must be positive */
if(angle < 0) angle = -angle;
/* angle must be a 90 multiple or no rotation performed */
if((angle % 90) != 0) return;
/*! \note
* The center of rotation (<B>world_centerx</B>, <B>world_centery</B>) is
* translated to the origin. The rotation of the upper left and lower right
* corner are then performed. Finally, the rotated box is translated back
* to its previous location.
*/
/* translate object to origin */
object->box->upper_x -= world_centerx;
object->box->upper_y -= world_centery;
object->box->lower_x -= world_centerx;
object->box->lower_y -= world_centery;
/* rotate the upper left corner of the box */
geda_point_rotate_90 (object->box->upper_x, object->box->upper_y, angle,
&newx1, &newy1);
/* rotate the lower left corner of the box */
geda_point_rotate_90 (object->box->lower_x, object->box->lower_y, angle,
&newx2, &newy2);
/* reorder the corners after rotation */
object->box->upper_x = min(newx1,newx2);
object->box->upper_y = max(newy1,newy2);
object->box->lower_x = max(newx1,newx2);
object->box->lower_y = min(newy1,newy2);
/* translate object back to normal position */
object->box->upper_x += world_centerx;
object->box->upper_y += world_centery;
object->box->lower_x += world_centerx;
object->box->lower_y += world_centery;
/* recalc boundings and world coords */
object->w_bounds_valid_for = NULL;
}
/*! \brief Rotates a complex object in world coordinates
* \par Function Description
* This function rotates a complex \a object around the
* (\a centerx,\a centery) point by \a angle degrees.
* The center of rotation is in world units.
*
* \param [in] toplevel The toplevel environment.
* \param [in] centerx X coordinate of rotation center (world coords).
* \param [in] centery Y coordinate of rotation center (world coords).
* \param [in] angle Rotation angle in degrees.
* \param [in,out] object Complex object to rotate.
*/
void geda_complex_object_rotate (TOPLEVEL *toplevel,
int centerx, int centery,
int angle, OBJECT *object)
{
int x, y;
int newx, newy;
g_return_if_fail (object!=NULL);
g_return_if_fail ((object->type == OBJ_COMPLEX) ||
(object->type == OBJ_PLACEHOLDER));
x = object->complex->x + (-centerx);
y = object->complex->y + (-centery);
geda_point_rotate_90 (x, y, angle, &newx, &newy);
x = newx + (centerx);
y = newy + (centery);
geda_complex_object_translate (object, -object->complex->x, -object->complex->y);
geda_object_list_rotate (object->complex->prim_objs, 0, 0, angle, toplevel);
object->complex->x = 0;
object->complex->y = 0;
geda_complex_object_translate (object, x, y);
object->complex->angle = ( object->complex->angle + angle ) % 360;
}
/*! \brief rotate a text object around a centerpoint
* \par Function Description
* This function rotates a text \a object around the point
* (\a world_centerx, \a world_centery).
*
* \param [in] toplevel The TOPLEVEL object
* \param [in] world_centerx x-coord of the rotation center
* \param [in] world_centery y-coord of the rotation center
* \param [in] angle The angle to rotate the text object
* \param [in] object The text object
* \note only steps of 90 degrees are allowed for the \a angle
*/
void
geda_text_object_rotate (TOPLEVEL *toplevel,
int world_centerx,
int world_centery,
int angle,
OBJECT *object)
{
int x, y;
int newx, newy;
g_return_if_fail (object != NULL);
g_return_if_fail (object->text != NULL);
g_return_if_fail (object->type == OBJ_TEXT);
g_return_if_fail (geda_angle_is_ortho (angle));
object->text->angle = geda_angle_normalize (object->text->angle + angle);
x = object->text->x + (-world_centerx);
y = object->text->y + (-world_centery);
geda_point_rotate_90 (x, y, angle, &newx, &newy);
x = newx + (world_centerx);
y = newy + (world_centery);
geda_text_object_translate (object, x-object->text->x, y-object->text->y);
o_text_recreate(toplevel, object);
}
/*! \brief Rotate Line OBJECT using WORLD coordinates.
* \par Function Description
* This function rotates the path described by
* <B>*object</B> around the (<B>world_centerx</B>,<B>world_centery</B>)
* point by <B>angle</B> degrees.
* The center of rotation is in world units.
*
* \param [in] toplevel The TOPLEVEL object.
* \param [in] world_centerx Rotation center x coordinate in WORLD units.
* \param [in] world_centery Rotation center y coordinate in WORLD units.
* \param [in] angle Rotation angle in degrees (See note below).
* \param [in,out] object Line OBJECT to rotate.
*/
void geda_path_object_rotate (TOPLEVEL *toplevel,
int world_centerx, int world_centery, int angle,
OBJECT *object)
{
PATH_SECTION *section;
int i;
g_return_if_fail (object != NULL);
g_return_if_fail (object->path != NULL);
g_return_if_fail (object->type == OBJ_PATH);
for (i = 0; i < object->path->num_sections; i++) {
section = &object->path->sections[i];
switch (section->code) {
case PATH_CURVETO:
/* Two control point grips */
section->x1 -= world_centerx; section->y1 -= world_centery;
section->x2 -= world_centerx; section->y2 -= world_centery;
geda_point_rotate_90 (section->x1, section->y1, angle, §ion->x1, §ion->y1);
geda_point_rotate_90 (section->x2, section->y2, angle, §ion->x2, §ion->y2);
section->x1 += world_centerx; section->y1 += world_centery;
section->x2 += world_centerx; section->y2 += world_centery;
/* Fall through */
case PATH_MOVETO:
case PATH_MOVETO_OPEN:
case PATH_LINETO:
/* Destination point grip */
section->x3 -= world_centerx; section->y3 -= world_centery;
geda_point_rotate_90 (section->x3, section->y3, angle, §ion->x3, §ion->y3);
section->x3 += world_centerx; section->y3 += world_centery;
break;
case PATH_END:
break;
}
}
object->w_bounds_valid_for = NULL;
}
/*! \brief Rotate Circle OBJECT using WORLD coordinates.
* \par Function Description
* The function #geda_circle_object_rotate() rotate the circle described by
* <B>*object</B> around the (<B>world_centerx</B>,<B>world_centery</B>) point by
* angle <B>angle</B> degrees.
* The center of rotation is in world unit.
*
* \param [in] toplevel The TOPLEVEL object.
* \param [in] world_centerx Rotation center x coordinate in WORLD units.
* \param [in] world_centery Rotation center y coordinate in WORLD units.
* \param [in] angle Rotation angle in degrees (See note below).
* \param [in,out] object Circle OBJECT to rotate.
*/
void
geda_circle_object_rotate (TOPLEVEL *toplevel,
gint world_centerx,
gint world_centery,
gint angle,
GedaObject *object)
{
int newx, newy;
int x, y;
g_return_if_fail (object != NULL);
g_return_if_fail (object->circle != NULL);
g_return_if_fail (object->type == OBJ_CIRCLE);
/* Only 90 degree multiple and positive angles are allowed. */
/* angle must be positive */
if(angle < 0) angle = -angle;
/* angle must be a 90 multiple or no rotation performed */
if((angle % 90) != 0) return;
/*
* The center of rotation (<B>world_centerx</B>,<B>world_centery</B>) is
* translated to the origin. The rotation of the center around the origin
* is then performed. Finally, the rotated circle is translated back to
* its previous location.
*/
/* translate object to origin */
object->circle->center_x -= world_centerx;
object->circle->center_y -= world_centery;
/* rotate the center of the circle around the origin */
x = object->circle->center_x;
y = object->circle->center_y;
geda_point_rotate_90 (x, y, angle, &newx, &newy);
object->circle->center_x = newx;
object->circle->center_y = newy;
/* translate back in position */
object->circle->center_x += world_centerx;
object->circle->center_y += world_centery;
object->w_bounds_valid_for = NULL;
}
/*! \brief
* \par Function Description
* This function rotates the world coordinates of an arc of an angle
* specified by <B>angle</B>. The center of the rotation is given by
* (<B>world_centerx</B>,<B>world_centery</B>).
*
* The arc is translated in order to put the center of the rotation
* on the origin. The center of the arc is then rotated of the angle
* specified by <B>angle</B>. The start angle of the arc is incremented by <B>angle</B>.
*
* The arc is finally back translated to its previous location on the page.
*
* <B>world_centerx</B> and <B>world_centery</B> are in world units, <B>angle</B> is in degrees.
*
* \param [in] toplevel The TOPLEVEL object.
* \param [in] world_centerx
* \param [in] world_centery
* \param [in] angle
* \param [in] object
*/
void geda_arc_object_rotate (TOPLEVEL *toplevel,
int world_centerx, int world_centery, int angle,
OBJECT *object)
{
int x, y, newx, newy;
g_return_if_fail (object != NULL);
g_return_if_fail (object->arc != NULL);
g_return_if_fail (object->type == OBJ_ARC);
/* translate object to origin */
object->arc->x -= world_centerx;
object->arc->y -= world_centery;
/* get center, and rotate center */
x = object->arc->x;
y = object->arc->y;
if(angle % 90 == 0) {
geda_point_rotate_90 (x, y, angle % 360, &newx, &newy);
} else {
geda_point_rotate (x, y, angle % 360, &newx, &newy);
}
object->arc->x = newx;
object->arc->y = newy;
/* apply rotation to angles */
object->arc->start_angle = (object->arc->start_angle + angle) % 360;
/* translate object to its previous place */
object->arc->x += world_centerx;
object->arc->y += world_centery;
/* update the screen coords and the bounding box */
object->w_bounds_valid_for = NULL;
}
