/* spline set... */
void CVMouseMovePoint(CharView *cv, PressedOn *p) {
SplinePoint *active = cv->active_sp, *merge = p->sp;
SplineSet *activess = cv->active_spl;
if ( cv->b.sc->inspiro && hasspiro()) {
CVMouseMoveSpiroPoint(cv,p);
return;
}
if ( active==NULL )
return;
if ( cv->info.x==active->me.x && cv->info.y==active->me.y )
return;
if ( !cv->recentchange ) CVPreserveState(&cv->b);
CVAdjustPoint(cv,active);
SplineSetSpirosClear(activess);
if (( active->next==NULL || active->prev==NULL ) && merge!=NULL && p->spl!=NULL &&
merge!=active &&
(merge->next==NULL || merge->prev==NULL )) {
CVMergeSplineSets(cv,active,activess,merge,p->spl);
}
SCUpdateAll(cv->b.sc);
}
void CVMergeSplineSets(CharView *cv, SplinePoint *active, SplineSet *activess,
SplinePoint *merge, SplineSet *mergess) {
SplinePointList *spl;
cv->joinvalid = true;
cv->joinpos = *merge; cv->joinpos.selected = false;
if ( active->prev==NULL )
SplineSetReverse(activess);
if ( merge->next==NULL )
SplineSetReverse(mergess);
active->nextcp = merge->nextcp;
active->nonextcp = merge->nonextcp;
active->nextcpdef = merge->nextcpdef;
active->next = merge->next;
if ( merge->next!= NULL ) {
active->next->from = active;
activess->last = mergess->last;
}
merge->next = NULL;
if ( mergess==activess ) {
activess->first = activess->last = active;
SplinePointMDFree(cv->b.sc,merge);
if ( activess->spiro_cnt!=0 ) {
activess->spiros[0].ty = activess->spiros[activess->spiro_cnt-2].ty;
activess->spiros[activess->spiro_cnt-2] = activess->spiros[activess->spiro_cnt-1];
--activess->spiro_cnt;
}
} else {
mergess->last = merge;
if ( mergess==cv->b.layerheads[cv->b.drawmode]->splines )
cv->b.layerheads[cv->b.drawmode]->splines = mergess->next;
else {
for ( spl = cv->b.layerheads[cv->b.drawmode]->splines; spl->next!=mergess; spl=spl->next );
spl->next = mergess->next;
}
if ( activess->spiros && mergess->spiros ) {
if ( activess->spiro_cnt+mergess->spiro_cnt > activess->spiro_max )
activess->spiros = realloc(activess->spiros,
(activess->spiro_max = activess->spiro_cnt+mergess->spiro_cnt)*sizeof(spiro_cp));
memcpy(activess->spiros+activess->spiro_cnt-1,
mergess->spiros+1, (mergess->spiro_cnt-1)*sizeof(spiro_cp));
activess->spiro_cnt += mergess->spiro_cnt-2;
} else
SplineSetSpirosClear(activess);
SplinePointListMDFree(cv->b.sc,mergess);
}
if (( active->pointtype==pt_curve || active->pointtype==pt_hvcurve ) &&
!active->nonextcp && !active->noprevcp &&
!active->nextcpdef && !active->prevcpdef &&
!BpColinear(&active->prevcp,&active->me,&active->nextcp))
active->nextcpdef = active->prevcpdef = true;
SplineSetJoinCpFixup(active);
}
static void CVMergeSPLS(CharView *cv,SplineSet *ss, SplinePoint *base,SplinePoint *sp) {
int order2 = cv->b.layerheads[cv->b.drawmode]->order2;
cv->joinvalid = true;
cv->joinpos = *sp; cv->joinpos.selected = false;
if ( sp->prev!=NULL )
SplineSetReverse(cv->p.spl);
if ( sp->prev!=NULL )
IError("Base point not at start of splineset in CVMouseDownPoint");
/* remove the old spl entry from the chain */
if ( cv->p.spl==cv->b.layerheads[cv->b.drawmode]->splines )
cv->b.layerheads[cv->b.drawmode]->splines = cv->p.spl->next;
else { SplineSet *temp;
for ( temp = cv->b.layerheads[cv->b.drawmode]->splines; temp->next!=cv->p.spl; temp = temp->next );
temp->next = cv->p.spl->next;
}
if ( order2 && (!RealNear(base->nextcp.x,sp->prevcp.x) ||
!RealNear(base->nextcp.y,sp->prevcp.y)) ) {
base->nonextcp = sp->noprevcp = true;
base->nextcp = base->me;
sp->prevcp = sp->me;
}
SplineMake(base,sp,order2);
SplineCharDefaultNextCP(base);
SplineCharDefaultPrevCP(sp);
if ( sp->pointtype==pt_tangent ) {
SplineCharTangentNextCP(sp);
if ( sp->next ) SplineRefigure(sp->next );
}
ss->last = cv->p.spl->last;
if ( ss->spiros && cv->p.spl->spiros ) {
if ( ss->spiro_cnt+cv->p.spl->spiro_cnt > ss->spiro_max )
ss->spiros = realloc(ss->spiros,
(ss->spiro_max = ss->spiro_cnt+cv->p.spl->spiro_cnt)*sizeof(spiro_cp));
memcpy(ss->spiros+ss->spiro_cnt-1,
cv->p.spl->spiros+1, (cv->p.spl->spiro_cnt-1)*sizeof(spiro_cp));
ss->spiro_cnt += cv->p.spl->spiro_cnt-2;
} else
SplineSetSpirosClear(ss);
cv->p.spl->last = cv->p.spl->first = NULL;
cv->p.spl->spiros = 0;
SplinePointListFree(cv->p.spl);
cv->p.spl = NULL;
}
void CVMouseMovePen(CharView *cv, PressedOn *p, GEvent *event) {
SplinePoint *active = cv->active_sp;
int order2 = cv->b.layerheads[cv->b.drawmode]->order2;
int order2_style = (order2 && !(event->u.mouse.state&ksm_meta)) ||
(!order2 && (event->u.mouse.state&ksm_meta));
if ( cv->b.sc->inspiro && hasspiro()) {
CVMouseMoveSpiroPoint(cv,p);
return;
}
if ( active==NULL )
return;
if ( cv->info.x==active->nextcp.x && cv->info.y==active->nextcp.y )
return;
/* In order2 fonts when the user clicks with the pen tool we'd like to */
/* leave it with the default cp (ie. the cp which makes the current point*/
/* implicit) rather than moving the cp to the base point and losing the */
/* curve */
if ( cv->info.x==active->me.x && cv->info.y==active->me.y &&
event->type==et_mouseup && cv->b.layerheads[cv->b.drawmode]->order2 )
return;
SplineSetSpirosClear(cv->active_spl);
cv->lastselpt = cv->active_sp;
active->nextcp.x = cv->info.x;
active->nextcp.y = cv->info.y;
if ( order2_style && active->next==NULL ) {
active->me.x = (active->nextcp.x + active->prevcp.x)/2;
active->me.y = (active->nextcp.y + active->prevcp.y)/2;
if ( active->me.x == active->nextcp.x && active->me.y == active->nextcp.y ) {
active->nonextcp = active->noprevcp = true;
} else {
active->nonextcp = active->noprevcp = false;
active->pointtype = pt_curve;
}
if ( active->prev!=NULL )
SplineRefigure(active->prev);
SCUpdateAll(cv->b.sc);
return;
} else if ( active->nextcp.x==active->me.x && active->nextcp.y==active->me.y ) {
active->prevcp = active->me;
active->nonextcp = active->noprevcp = true;
active->pointtype = pt_corner;
} else {
active->prevcp.x = active->me.x - (active->nextcp.x-active->me.x);
active->prevcp.y = active->me.y - (active->nextcp.y-active->me.y);
active->nonextcp = active->noprevcp = false;
active->nextcpdef = active->prevcpdef = false;
active->pointtype = pt_curve;
}
if ( cv->b.layerheads[cv->b.drawmode]->order2 ) {
if ( active->prev!=NULL ) {
if ( active->noprevcp )
active->prev->from->nonextcp = true;
else {
active->prev->from->nextcp = active->prevcp;
active->prev->from->nonextcp = false;
}
SplinePointNextCPChanged2(active->prev->from);
SplineRefigureFixup(active->prev);
}
if ( active->next!=NULL ) {
if ( active->nonextcp )
active->next->to->noprevcp = true;
else {
active->next->to->prevcp = active->nextcp;
active->next->to->noprevcp = false;
}
SplineRefigureFixup(active->next);
}
} else {
if ( active->prev!=NULL )
SplineRefigure(active->prev);
if ( active->next!=NULL )
SplineRefigure(active->next);
}
CPUpdateInfo(cv,event);
SCUpdateAll(cv->b.sc);
}
/* When the user tries to add a point (by doing a mouse down with a point tool
selected) there are several cases to be looked at:
If there is a single point selected and it is at the begining/end of an open spline set
if we clicked on another point which is the begining/end of an open splineset
draw a spline connecting the two spline sets and merge them
(or if it's the same spline set, then close it)
else
create a new point where we clicked
draw a spline between the selected point and the new one
deselect the old point
select the new one
endif
else if they clicked on a spline
split the spline into two bits at the point where they clicked
else
create a new point where they clicked
put it on a new splineset
select it
endif
and, if the old point is a tangent, we may need to adjust its control pt
With the introduction of spiro mode (Raph Levien's clothoid splines)
we've got to worry about all the above cases for spiro points too.
*/
void CVMouseDownPoint(CharView *cv, GEvent *event) {
SplineSet *sel, *ss;
SplinePoint *sp, *base = NULL;
SplineChar *sc = cv->b.sc;
enum pointtype ptype = (cv->active_tool==cvt_curve?pt_curve:
cv->active_tool==cvt_hvcurve?pt_hvcurve:
cv->active_tool==cvt_corner?pt_corner:
cv->active_tool==cvt_tangent?pt_tangent:
/*cv->active_tool==cvt_pen?*/pt_corner);
int order2 = cv->b.layerheads[cv->b.drawmode]->order2;
int order2_style = (order2 && !(event->u.mouse.state&ksm_meta)) ||
(!order2 && (event->u.mouse.state&ksm_meta));
cv->active_spl = NULL;
cv->active_sp = NULL;
if ( cv->b.sc->inspiro && hasspiro()) {
CVMouseDownSpiroPoint(cv, event);
return;
}
sel = CVAnySelPointList(cv);
if ( sel!=NULL ) {
if ( sel->first->selected ) base = sel->first;
else base = sel->last;
if ( base==cv->p.sp )
return; /* We clicked on the active point, that's a no-op */
}
CVPreserveState(&cv->b);
CVClearSel(cv);
if ( sel!=NULL ) {
sp = cv->p.sp;
cv->lastselpt = base;
ss = sel;
if ( base->next!=NULL )
SplineSetReverse(sel);
if ( base->next!=NULL )
IError("Base point not at end of splineset in CVMouseDownPoint");
if ( sp==NULL || (sp->next!=NULL && sp->prev!=NULL) || sp==base ) {
/* Add a new point */
SplineSetSpirosClear(sel);
sp = SplinePointCreate( cv->p.cx, cv->p.cy );
sp->noprevcp = sp->nonextcp = 1;
sp->nextcpdef = sp->prevcpdef = 1;
sp->pointtype = ptype;
sp->selected = true;
if ( !base->nonextcp && order2_style &&
cv->active_tool==cvt_pen ) {
sp->prevcp = base->nextcp;
sp->noprevcp = false;
sp->me.x = ( sp->prevcp.x + sp->nextcp.x )/2;
sp->me.y = ( sp->prevcp.y + sp->nextcp.y )/2;
sp->nonextcp = false;
sp->pointtype = pt_curve;
} else if ( order2 && !base->nonextcp ) {
sp->prevcp = base->nextcp;
sp->noprevcp = false;
if ( cv->active_tool==cvt_pen ) {
sp->nextcp.x = sp->me.x - (sp->prevcp.x-sp->me.x);
sp->nextcp.y = sp->me.y - (sp->prevcp.y-sp->me.y);
sp->nonextcp = false;
sp->pointtype = pt_curve;
}
}
if ( base->nonextcp )
base->nextcpdef = true;
SplineMake(base,sp,order2);
if ( cv->active_tool!=cvt_pen ) {
SplineCharDefaultNextCP(base);
SplineCharDefaultPrevCP(sp);
}
ss->last = sp;
} else if ( cv->p.spl==sel ) {
/* Close the current spline set */
SplineSetSpirosClear(sel);
cv->joinvalid = true;
cv->joinpos = *sp; cv->joinpos.selected = false;
if ( order2 ) {
if ( base->nonextcp || sp->noprevcp ) {
base->nonextcp = sp->noprevcp = true;
base->nextcp = base->me;
sp->prevcp = sp->me;
} else {
base->nextcp.x = sp->prevcp.x = (base->nextcp.x+sp->prevcp.x)/2;
base->nextcp.y = sp->prevcp.y = (base->nextcp.y+sp->prevcp.y)/2;
}
base->nextcpdef = sp->prevcpdef = true;
}
SplineMake(base,sp,order2);
if ( cv->active_tool!=cvt_pen )
SplineCharDefaultNextCP(base);
SplineCharDefaultPrevCP(sp);
ss->last = sp;
if ( sp->pointtype==pt_tangent ) {
SplineCharTangentNextCP(sp);
if ( sp->next ) SplineRefigure(sp->next );
}
} else {
/* Merge two spline sets */
SplineSetSpirosClear(sel);
CVMergeSPLS(cv,sel, base,sp);
}
sp->selected = true;
if ( base->pointtype==pt_tangent ) {
SplineCharTangentPrevCP(base);
if ( base->prev!=NULL )
SplineRefigure(base->prev);
}
} else if ( cv->p.spline!=NULL ) {
sp = SplineBisect(cv->p.spline,cv->p.t);
cv->joinvalid = true;
cv->joinpos = *sp; cv->joinpos.selected = false;
if ( cv->active_tool==cvt_pen )
ptype = pt_curve;
sp->pointtype = ptype;
if ( ptype==pt_hvcurve ) {
SPHVCurveForce(sp);
}
sp->selected = true;
ss = cv->p.spl;
} else {
ss = chunkalloc(sizeof(SplineSet));
sp = SplinePointCreate( cv->p.cx, cv->p.cy );
ss->first = ss->last = sp;
ss->next = cv->b.layerheads[cv->b.drawmode]->splines;
cv->b.layerheads[cv->b.drawmode]->splines = ss;
sp->nonextcp = sp->noprevcp = 1;
sp->nextcpdef = sp->prevcpdef = 1;
sp->pointtype = ptype;
sp->selected = true;
}
cv->active_spl = ss;
cv->active_sp = sp;
CVSetCharChanged(cv,true);
CVInfoDraw(cv,cv->gw);
SCUpdateAll(sc);
if ( cv->active_tool == cvt_pen )
cv->p.constrain = sp->me;
}
void CVMouseUpKnife(CharView *cv, GEvent *event) {
#if !defined(KNIFE_CONTINUOUS)
/* draw a line from (cv->p.cx,cv->p.cy) to (cv->info.x,cv->info.y) */
/* and cut anything intersected by it */
SplineSet *spl, *spl2;
Spline *s, *nexts;
Spline dummy;
SplinePoint dummyfrom, dummyto, *mid, *mid2;
BasePoint inters[9];
extended t1s[10], t2s[10];
int foundsomething = true, ever = false;
int i;
int spiro_index = 0;
memset(&dummy,0,sizeof(dummy));
memset(&dummyfrom,0,sizeof(dummyfrom));
memset(&dummyto,0,sizeof(dummyto));
dummyfrom.me.x = cv->p.cx;
dummyfrom.me.y = cv->p.cy;
dummyto.me.x = cv->info.x;
dummyto.me.y = cv->info.y;
dummyfrom.nextcp = dummyfrom.prevcp = dummyfrom.me;
dummyto.nextcp = dummyto.prevcp = dummyto.me;
dummyfrom.nonextcp = dummyfrom.noprevcp = dummyto.nonextcp = dummyto.noprevcp = true;
dummy.splines[0].d = cv->p.cx;
dummy.splines[0].c = cv->info.x-cv->p.cx;
dummy.splines[1].d = cv->p.cy;
dummy.splines[1].c = cv->info.y-cv->p.cy;
dummy.from = &dummyfrom;
dummy.to = &dummyto;
dummy.islinear = dummy.knownlinear = true;
dummyfrom.next = dummyto.prev = &dummy;
for ( spl = cv->b.layerheads[cv->b.drawmode]->splines; spl!=NULL ; spl = spl->next )
spl->ticked = false;
while ( foundsomething ) {
foundsomething = false;
for ( spl = cv->b.layerheads[cv->b.drawmode]->splines; spl!=NULL && !foundsomething; spl = spl->next ) {
for ( s = spl->first->next; s!=NULL ; ) {
nexts = NULL;
if ( s->to!=spl->first )
nexts = s->to->next;
if ( SplinesIntersect(s,&dummy,inters,t1s,t2s)>0 ) {
if ( event->u.mouse.state&ksm_meta ) {
for ( i=0; i<4 && t1s[i]!=-1 && (t1s[i]<.0001 || t1s[i]>1-.0001); ++i );
if ( i<4 && t1s[i]!=-1 ) {
/* With meta down we just remove the spline rather than */
/* cutting it */
foundsomething = true;
nexts = NULL;
if ( !ever )
CVPreserveState(&cv->b);
ever = true;
if ( spl->first==spl->last ) {
spl->first = s->to;
spl->last = s->from;
} else {
spl2 = chunkalloc(sizeof(SplineSet));
spl2->next = spl->next;
spl->next = spl2;
spl2->first = s->to;
spl2->last = spl->last;
spl->last = s->from;
}
s->to->prev = s->from->next = NULL;
SplineFree(s);
SplineSetSpirosClear(spl);
}
} else {
for ( i=0; i<4 && t1s[i]!=-1 &&
(( t1s[i]<.001 && s->from->prev==NULL ) ||
( t1s[i]>1-.001 && s->to->next == NULL ));
++i );
if ( i<4 && t1s[i]!=-1 ) {
foundsomething = true;
nexts = NULL;
if ( !ever )
CVPreserveState(&cv->b);
ever = true;
spiro_index = -1;
if ( cv->b.sc->inspiro && hasspiro()) {
if ( spl->spiro_cnt!=0 )
spiro_index = SplineT2SpiroIndex(s,t1s[i],spl);
} else
SplineSetSpirosClear(spl);
if ( t1s[i]<.001 ) {
mid = s->from;
} else if ( t1s[i]>1-.001 ) {
mid = s->to;
} else
mid = SplineBisect(s,t1s[i]);
/* if the intersection is close to an end point */
/* cut at the end point, else break in the middle */
/* Cut here, and then */
/* start all over again (we may need to alter the */
/* splineset structure so drastically that we just */
/* can't continue these loops) */
mid->pointtype = pt_corner;
mid2 = chunkalloc(sizeof(SplinePoint));
*mid2 = *mid;
mid2->hintmask = NULL;
mid->next = NULL;
mid2->prev = NULL;
mid2->next->from = mid2;
spl->ticked = true;
if ( spl->first==spl->last ) {
spl->first = mid2;
spl->last = mid;
if ( spiro_index!=-1 )
ReorderSpirosAndAddAndCut(spl,spiro_index);
} else {
spl2 = chunkalloc(sizeof(SplineSet));
spl2->next = spl->next;
spl->next = spl2;
spl2->first = mid2;
spl2->last = spl->last;
spl->last = mid;
if ( spiro_index!=-1 )
SplitSpirosAndAddAndCut(spl,spl2,spiro_index);
spl2->ticked = true;
}
}
}
}
s = nexts;
}
}
}
if ( ever ) {
for ( spl = cv->b.layerheads[cv->b.drawmode]->splines; spl!=NULL ; spl = spl->next ) {
if ( spl->ticked && spl->spiros!=NULL && cv->b.sc->inspiro && hasspiro())
SSRegenerateFromSpiros(spl);
spl->ticked = false;
}
CVCharChangedUpdate(&cv->b);
}
#endif
}
