/** Add a trio of handles to a bezier.
* @param bezier The bezierconn having handles added.
* @param pos Where in the list of segments to add the handle
* @param point The bezier point to add. This should already be initialized
* with sensible positions.
* @param corner_type What kind of corner this bezpoint should be.
* @param handle1 The handle that will be put on the bezier line.
* @param handle2 The handle that will be put before handle1
* @param handle3 The handle that will be put after handle1
*/
static void
add_handles (BezierConn *bezier,
int pos, BezPoint *point,
BezCornerType corner_type,
Handle *handle1, Handle *handle2, Handle *handle3)
{
int i, next;
DiaObject *obj = &bezier->object;
g_assert(pos > 0);
bezier->bezier.num_points++;
next = pos + 1;
bezier->bezier.points = g_realloc(bezier->bezier.points, bezier->bezier.num_points*sizeof(BezPoint));
bezier->bezier.corner_types = g_realloc(bezier->bezier.corner_types,
bezier->bezier.num_points * sizeof(BezCornerType));
for (i = bezier->bezier.num_points - 1; i > pos; i--) {
bezier->bezier.points[i] = bezier->bezier.points[i-1];
bezier->bezier.corner_types[i] = bezier->bezier.corner_types[i-1];
}
bezier->bezier.points[pos] = *point;
bezier->bezier.points[pos].p1 = bezier->bezier.points[next].p1;
bezier->bezier.points[next].p1 = point->p1;
bezier->bezier.corner_types[pos] = corner_type;
object_add_handle_at(obj, handle1, 3*pos-2);
object_add_handle_at(obj, handle2, 3*pos-1);
object_add_handle_at(obj, handle3, 3*pos);
if (pos==bezier->bezier.num_points-1) {
obj->handles[obj->num_handles-4]->type = HANDLE_MINOR_CONTROL;
obj->handles[obj->num_handles-4]->id = HANDLE_BEZMAJOR;
}
}
static void
add_handle(PolyConn *poly, int pos, Point *point, Handle *handle)
{
int i;
DiaObject *obj;
poly->numpoints++;
poly->points = g_realloc(poly->points, poly->numpoints*sizeof(Point));
for (i=poly->numpoints-1; i > pos; i--) {
poly->points[i] = poly->points[i-1];
}
poly->points[pos] = *point;
object_add_handle_at((DiaObject*)poly, handle, pos);
obj = (DiaObject *)poly;
if (pos==0) {
obj->handles[1]->type = HANDLE_MINOR_CONTROL;
obj->handles[1]->id = HANDLE_CORNER;
}
if (pos==obj->num_handles-1) {
obj->handles[obj->num_handles-2]->type = HANDLE_MINOR_CONTROL;
obj->handles[obj->num_handles-2]->id = HANDLE_CORNER;
}
}
static void
add_handles(BezierShape *bezier, int pos, BezPoint *point,
BezCornerType corner_type, Handle *handle1,
Handle *handle2, Handle *handle3,
ConnectionPoint *cp1, ConnectionPoint *cp2)
{
int i, next;
DiaObject *obj;
g_assert(pos >= 1);
g_assert(pos <= bezier->numpoints);
obj = (DiaObject *)bezier;
bezier->numpoints++;
next = pos + 1;
if (pos == bezier->numpoints - 1)
next = 1;
bezier->points = g_realloc(bezier->points,
bezier->numpoints * sizeof(BezPoint));
bezier->corner_types = g_realloc(bezier->corner_types,
bezier->numpoints * sizeof(BezCornerType));
for (i = bezier->numpoints - 1; i > pos; i--) {
bezier->points[i] = bezier->points[i-1];
bezier->corner_types[i] =bezier->corner_types[i-1];
}
bezier->points[pos] = *point;
bezier->points[pos].p1 = bezier->points[next].p1;
bezier->points[next].p1 = point->p1;
if (pos == bezier->numpoints - 1)
bezier->points[0].p1 = bezier->points[0].p3 = bezier->points[pos].p3;
bezier->corner_types[pos] = corner_type;
object_add_handle_at((DiaObject*)bezier, handle1, 3*pos-3);
object_add_handle_at((DiaObject*)bezier, handle2, 3*pos-2);
object_add_handle_at((DiaObject*)bezier, handle3, 3*pos-1);
object_add_connectionpoint_at((DiaObject *)bezier, cp1, 2*pos-2);
object_add_connectionpoint_at((DiaObject *)bezier, cp2, 2*pos-1);
}
static void
add_handle(PolyShape *poly, int pos, Point *point, Handle *handle,
ConnectionPoint *cp1, ConnectionPoint *cp2)
{
int i;
DiaObject *obj = &poly->object;
poly->numpoints++;
poly->points = g_realloc(poly->points, poly->numpoints*sizeof(Point));
for (i=poly->numpoints-1; i > pos; i--) {
poly->points[i] = poly->points[i-1];
}
poly->points[pos] = *point;
object_add_handle_at(obj, handle, pos);
object_add_connectionpoint_at(obj, cp1, 2*pos);
object_add_connectionpoint_at(obj, cp2, 2*pos+1);
}
