static void IkarusAddContour(SplineChar *sc,int npts,BasePoint *bps, uint8 *ptype, int nesting) { SplinePointList *spl; SplinePoint *last, *next; int i, cw; spl = chunkalloc(sizeof(SplinePointList)); spl->next = sc->layers[ly_fore].splines; sc->layers[ly_fore].splines = spl; spl->first = spl->last = last = SplinePointCreate(bps[0].x,bps[0].y); last->pointtype = ptype[npts-1]; last->nextcpdef = last->prevcpdef = true; for ( i=1; i<npts-1; ++i ) { next = SplinePointCreate(bps[i].x,bps[i].y); next->nextcpdef = next->prevcpdef = true; next->pointtype = ptype[i]; SplineMake3(last,next); last = next; } SplineMake3(last,spl->last); last = spl->first; for ( i=1; i<npts; ++i ) { SplineCharDefaultPrevCP(last); SplineCharDefaultNextCP(last); last=last->next->to; } cw = SplinePointListIsClockwise(spl)==1; if ( ((nesting&1) && cw) || (!(nesting&1) && !cw) ) SplineSetReverse(spl); }
void AdjustControls(SplinePoint *sp) { if ( sp->next!=NULL ) { SplineCharDefaultNextCP(sp); /* also fixes up tangents */ SplineCharDefaultPrevCP(sp->next->to); SplineRefigure(sp->next); if ( sp->next->to->pointtype==pt_tangent && sp->next->to->next!=NULL ) { SplineCharTangentNextCP(sp->next->to); SplineRefigure(sp->next->to->next); } } if ( sp->prev!=NULL ) { SplineCharDefaultPrevCP(sp); SplineCharDefaultNextCP(sp->prev->from); SplineRefigure(sp->prev); if ( sp->prev->from->pointtype==pt_tangent && sp->prev->from->prev!=NULL ) { SplineCharTangentPrevCP(sp->prev->from); SplineRefigure(sp->prev->from->prev); } } }
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; }
/* 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; }