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 CVAdjustPoint(CharView *cv, SplinePoint *sp) {
if ( cv->info.x==sp->me.x && cv->info.y==sp->me.y )
return;
sp->nextcp.x += (cv->info.x-sp->me.x);
sp->nextcp.y += (cv->info.y-sp->me.y);
sp->prevcp.x += (cv->info.x-sp->me.x);
sp->prevcp.y += (cv->info.y-sp->me.y);
sp->me.x = cv->info.x;
sp->me.y = cv->info.y;
AdjustControls(sp);
CVSetCharChanged(cv,true);
}
/*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
* The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO
* EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
* OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
* OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
#include "pfaeditui.h"
#include <math.h>
#if defined(KNIFE_CONTINUOUS) /* Use this code to do cuts as we move along. Probably a bad idea, let's wait till the end */
static void ProcessKnife(CharView *cv, PressedOn *p) {
real dx, dy;
SplinePoint *n;
/* If we've already made a cut, don't make another cut too close to it */
/* ie. if the hand shakes over a cut let's not get about six tiny cut */
/* segments adjacent to one another */
if ( (dx=cv->info.x-cv->lastknife.x)<0 ) dx=-dx;
if ( (dy=cv->info.y-cv->lastknife.y)<0 ) dy=-dy;
if ( (dx+dy)/cv->scale <= 6 )
return;
if ( p->sp==NULL && p->spline==NULL )
return; /* Nothing to cut */
if ( p->spline!=NULL )
p->sp = SplineBisect(p->spline,p->t);
if ( p->spl==NULL ) /* Kanou says this can happen. It doesn't hurt to check for it */
return;
if ( p->spl->first!=p->spl->last )
if ( p->sp==p->spl->first || p->sp==p->spl->last )
return; /* Already cut here */
n = chunkalloc(sizeof(SplinePoint));
p->sp->pointtype = pt_corner;
*n = *p->sp;
n->hintmask = NULL;
p->sp->next = NULL;
n->prev = NULL;
n->next->from = n;
if ( p->spl->first==p->spl->last ) {
p->spl->first = n;
p->spl->last = p->sp;
} else {
SplinePointList *nspl = chunkalloc(sizeof(SplinePointList));
nspl->next = p->spl->next;
p->spl->next = nspl;
nspl->first = n;
nspl->last = p->spl->last;
p->spl->last = p->sp;
}
cv->lastknife.x = cv->info.x;
cv->lastknife.y = cv->info.y;
CVSetCharChanged(cv,true);
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;
}
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);
}
void CVMouseMoveTransform(CharView *cv) {
real transform[6];
CVRestoreTOriginalState(cv);
if ( cv->info.x != cv->p.cx || cv->info.y != cv->p.cy ) {
transform[0] = transform[3] = 1;
transform[1] = transform[2] = 0;
switch ( cv->active_tool ) {
case cvt_rotate: {
real angle = atan2(cv->info.y-cv->p.cy,cv->info.x-cv->p.cx);
transform[0] = transform[3] = cos(angle);
transform[2] = -(transform[1] = sin(angle));
} break;
case cvt_flip: {
real dx,dy;
if (( dx = cv->info.x-cv->p.cx)<0 ) dx=-dx;
if (( dy = cv->info.y-cv->p.cy)<0 ) dy=-dy;
if ( dy>2*dx )
transform[0] = -1;
else if ( dx>2*dy )
transform[3] = -1;
else if ( (cv->info.x-cv->p.cx)*(cv->info.y-cv->p.cy)>0 ) {
transform[0] = transform[3] = 0;
transform[1] = transform[2] = -1;
} else {
transform[0] = transform[3] = 0;
transform[1] = transform[2] = 1;
}
} break;
case cvt_scale: {
transform[0] = 1.0+(cv->info.x-cv->p.cx)/(400*cv->scale);
transform[3] = 1.0+(cv->info.y-cv->p.cy)/(400*cv->scale);
} break;
case cvt_skew: {
real angle = atan2(cv->info.y-cv->p.cy,cv->info.x-cv->p.cx);
transform[2] = sin(angle);
} break;
case cvt_3d_rotate: {
real angle = atan2(cv->info.y-cv->p.cy,cv->info.x-cv->p.cx);
/* Allow one pixel per degree */
real zangle = sqrt( (cv->info.x-cv->p.cx)*(cv->info.x-cv->p.cx) +
(cv->info.y-cv->p.cy)*(cv->info.y-cv->p.cy) ) * cv->scale *
3.1415926535897932/180;
real s = sin(angle), c = cos(angle);
real cz = cos(zangle);
transform[0] = c*c + s*s*cz;
transform[3] = s*s + c*c*cz;
transform[2] = transform[1] = c*s * (cz-1);
} break;
/* Perspective takes three points: origin, start point, cur point */
/* first rotate so that orig/start are the x axis */
/* then define perspective so that: */
/* y' = y */
/* x' = cur.x + (cur.y - y)/cur.y * (x - cur.x) */
/* then rotate back */
case cvt_perspective: {
real angle = atan2(cv->p.cy,cv->p.cx);
real s = sin(angle), c = cos(angle);
transform[0] = transform[3] = c;
transform[2] = -(transform[1] = -s);
transform[4] = transform[5] = 0;
CVTransFunc(cv,transform,false);
CVYPerspective((CharViewBase *) cv,
c*cv->info.x + s*cv->info.y,
-s*cv->info.x + c*cv->info.y);
transform[2] = -(transform[1] = s);
} break;
default:
break;
}
/* Make the pressed point be the center of the transformation */
if ( cv->active_tool!=cvt_perspective ) {
transform[4] = -cv->p.cx*transform[0] -
cv->p.cy*transform[2] +
cv->p.cx;
transform[5] = -cv->p.cy*transform[3] -
cv->p.cx*transform[1] +
cv->p.cy;
}
CVSetCharChanged(cv,true);
CVTransFunc(cv,transform,false);
}
SCUpdateAll(cv->b.sc);
}
