static void CVMouseMoveSpiroPoint(CharView *cv, PressedOn *p) {
spiro_cp *active = cv->active_cp, *merge = p->spiro;
SplineSet *activess = cv->active_spl;
int active_index;
if ( active==NULL )
return;
if ( cv->info.x==active->x && cv->info.y==active->y )
return;
if ( !cv->recentchange ) CVPreserveState(&cv->b);
active->x = cv->info.x;
active->y = cv->info.y;
CVSetCharChanged(cv,true);
active_index = active-activess->spiros;
if ( active!=merge && merge!=NULL && p->spl!=NULL &&
SPIRO_SPL_OPEN(activess) &&
SPIRO_SPL_OPEN(p->spl) &&
(active_index==0 || active_index==activess->spiro_cnt-2) &&
((merge-p->spl->spiros)==0 || (merge-p->spl->spiros)==p->spl->spiro_cnt-2) ) {
SplinePoint *activesp = active_index==0 ? activess->first : activess->last;
SplinePoint *mergesp = (merge-p->spl->spiros)==0 ? p->spl->first : p->spl->last;
CVMergeSplineSets(cv,activesp,activess,mergesp,p->spl);
}
SSRegenerateFromSpiros(activess);
SCUpdateAll(cv->b.sc);
}
void SSRegenerateFromSpiros(SplineSet *spl) {
SplineSet *temp;
if ( spl->spiro_cnt<=1 )
return;
if ( !has_spiro)
return;
SplineSetBeziersClear(spl);
temp = SpiroCP2SplineSet(spl->spiros);
if ( temp!=NULL ) {
spl->first = temp->first;
spl->last = temp->last;
chunkfree(temp,sizeof(SplineSet));
} else {
/* didn't converge... or something */
int i;
SplinePoint *sp, *last;
last = spl->first = SplinePointCreate(spl->spiros[0].x, spl->spiros[0].y);
for ( i=1; i<spl->spiro_cnt; ++i ) {
sp = SplinePointCreate(spl->spiros[i].x, spl->spiros[i].y);
SplineMake3(last,sp);
last = sp;
}
if ( SPIRO_SPL_OPEN(spl))
spl->last = last;
else {
SplineMake3(last,spl->first);
spl->last = spl->first;
}
}
spl->beziers_need_optimizer = true;
}
SplinePointList *CVAnySelPointList(CharView *cv) {
/* if there is exactly one point selected and it is on an open splineset */
/* and it is one of the endpoints of the splineset, then return that */
/* splineset */
SplinePointList *spl, *found=NULL;
Spline *spline, *first;
int i;
for ( spl= cv->b.layerheads[cv->b.drawmode]->splines; spl!=NULL; spl=spl->next ) {
if ( cv->b.sc->inspiro && hasspiro()) {
for ( i = 0; i<spl->spiro_cnt-1; ++i ) {
if ( SPIRO_SELECTED(&spl->spiros[i])) {
/* Only interesting if the single selection is at the */
/* start/end of an open contour */
if (( i!=0 && i!=spl->spiro_cnt-2 ) ||
!SPIRO_SPL_OPEN(spl))
return( NULL );
else if ( found==NULL )
found = spl;
else
return( NULL );
}
}
} else {
if ( spl->first->selected ) {
if ( found!=NULL )
return( NULL ); /* At least two points */
if ( spl->first->prev!=NULL )
return( NULL ); /* Not an open splineset */
found = spl;
}
first = NULL;
for ( spline = spl->first->next; spline!=NULL && spline!=first; spline=spline->to->next ) {
if ( spline->to->selected ) {
if ( found!=NULL )
return( NULL );
if ( spline->to->next!=NULL )
return( NULL ); /* Selected point is not at end of a splineset */
found = spl;
}
if ( first==NULL ) first = spline;
}
}
}
return( found );
}
void SSRegenerateFromSpiros(SplineSet * spl) {
/* Regenerate an updated SplineSet from SpiroCPs after edits are done. */
if (spl->spiro_cnt <= 1 || !has_spiro)
return;
SplineSet *temp=SpiroCP2SplineSet(spl->spiros);
if (temp != NULL) {
/* Regenerated new SplineSet. Discard old copy. Keep new copy. */
SplineSetBeziersClear(spl);
spl->first=temp->first;
spl->last=temp->last;
chunkfree(temp, sizeof(SplineSet));
} else {
/* Didn't converge... or something ...therefore let's fake-it. */
int i;
SplinePoint *sp, *first, *last;
if ((last=first =
SplinePointCreate(spl->spiros[0].x, spl->spiros[0].y))==NULL)
return;
for (i=1; i < spl->spiro_cnt; ++i) {
if ((sp=SplinePointCreate(spl->spiros[i].x, spl->spiros[i].y))) {
SplineMake3(last, sp);
last=sp;
} else
break; /* ...have problem, but keep what we got so far */
}
/* dump the prior SplineSet and now show this line-art instead */
SplineSetBeziersClear(spl);
spl->first=first;
if (SPIRO_SPL_OPEN(spl))
spl->last=last;
else {
SplineMake3(last, spl->first);
spl->last=spl->first;
}
}
spl->beziers_need_optimizer=true;
}
static void CVMouseDownSpiroPoint(CharView *cv, GEvent *event) {
SplineSet *sel, *ss;
SplineChar *sc = cv->b.sc;
spiro_cp *base, *cp;
int base_index, cp_index, i;
char ty = (cv->active_tool==cvt_curve?SPIRO_G4:
cv->active_tool==cvt_hvcurve?SPIRO_G2:
cv->active_tool==cvt_corner?SPIRO_CORNER:
cv->active_tool==cvt_tangent?SPIRO_LEFT:
/*cv->active_tool==cvt_pen?*/SPIRO_RIGHT);
cv->active_spl = NULL;
cv->active_sp = NULL;
sel = CVAnySelPointList(cv);
if ( sel!=NULL ) {
if ( SPIRO_SELECTED(&sel->spiros[0]) ) base_index = 0;
else base_index = sel->spiro_cnt-2;
base = &sel->spiros[base_index];
if ( base==cv->p.spiro )
return; /* We clicked on the active point, that's a no-op */
}
CVPreserveState(&cv->b);
CVClearSel(cv);
if ( sel!=NULL ) {
if ( (cp = cv->p.spiro)!=NULL )
cp_index = cp-cv->p.spl->spiros;
cv->lastselcp = base;
ss = sel;
if ( base_index!=sel->spiro_cnt-2 ) {
SplineSetReverse(sel);
base = &sel->spiros[sel->spiro_cnt-2];
if ( cv->p.spl==sel ) {
cp_index = sel->spiro_cnt-2-cp_index;
cp = &sel->spiros[cp_index];
}
}
if ( cp==NULL || (cp_index!=0 && cp_index!=cv->p.spl->spiro_cnt-2) ||
cp==base || !SPIRO_SPL_OPEN(cv->p.spl)) {
/* Add a new point */
if ( sel->spiro_cnt>=sel->spiro_max )
sel->spiros = realloc(sel->spiros,(sel->spiro_max += 10)*sizeof(spiro_cp));
cp = &sel->spiros[sel->spiro_cnt-1];
cp[1] = cp[0]; /* Move the final 'z' */
cp->x = cv->p.cx;
cp->y = cv->p.cy;
cp->ty = ty;
SPIRO_DESELECT(cp-1);
++sel->spiro_cnt;
} else if ( cv->p.spl==sel ) {
/* Close the current spline set */
sel->spiros[0].ty = ty;
cv->joinvalid = true;
cv->joincp = *cp; SPIRO_DESELECT(&cv->joincp);
} else {
/* Merge two spline sets */
SplinePoint *sp = cp_index==0 ? cv->p.spl->first : cv->p.spl->last;
SplinePoint *basesp = base_index==0 ? sel->first : sel->last;
cv->joincp = *cp; SPIRO_DESELECT(&cv->joincp);
CVMergeSPLS(cv,ss,basesp,sp);
}
} else if ( cv->p.spline!=NULL ) {
/* Add an intermediate point on an already existing spline */
ss = cv->p.spl;
if ( ss->spiro_cnt>=ss->spiro_max )
ss->spiros = realloc(ss->spiros,(ss->spiro_max += 10)*sizeof(spiro_cp));
for ( i=ss->spiro_cnt-1; i>cv->p.spiro_index; --i )
ss->spiros[i+1] = ss->spiros[i];
++ss->spiro_cnt;
cp = &ss->spiros[cv->p.spiro_index+1];
cp->x = cv->p.cx;
cp->y = cv->p.cy;
cp->ty = ty;
ss = cv->p.spl;
cv->joinvalid = true;
cv->joincp = *cp; SPIRO_DESELECT(&cv->joincp);
} else {
/* A new point on a new (open) contour */
ss = chunkalloc(sizeof(SplineSet));
ss->next = cv->b.layerheads[cv->b.drawmode]->splines;
cv->b.layerheads[cv->b.drawmode]->splines = ss;
ss->spiros = malloc((ss->spiro_max=10)*sizeof(spiro_cp));
cp = &ss->spiros[0];
cp->x = cv->p.cx;
cp->y = cv->p.cy;
cp->ty = SPIRO_OPEN_CONTOUR;
cp[1].x = cp[1].y = 0; cp[1].ty = 'z';
ss->spiro_cnt = 2;
}
SPIRO_SELECT(cp);
SSRegenerateFromSpiros(ss);
cv->active_spl = ss;
cv->active_cp = cp;
CVSetCharChanged(cv,true);
CVInfoDraw(cv,cv->gw);
SCUpdateAll(sc);
}