#include <tools/modifiers/modifierline.h>
//*****************************************************************************************
// TModifierLine implementation
//*****************************************************************************************
static inline void calcFixedAngle(const TTrackPoint &p0, TTrackPoint &p1) {
TPointD p = p1.position - p0.position;
double l = sqrt(p.x*p.x + p.y*p.y);
if (l < TConsts::epsilon) {
p = TPointD();
} else {
double a = atan2(p.y, p.x);
a = round(a*4/M_PI)*M_PI/4;
p.x = cos(a)*l;
p.y = sin(a)*l;
}
p1.position = p0.position + p;
}
TTrackPoint TModifierLine::Modifier::calcPoint(double originalIndex) {
if (original.empty()) return TTrackPoint();
if (original.size() < 2) return original.front();
TTrackPoint p0 = original.front();
TTrackPoint p1 = original.back();
if (fixAngle) calcFixedAngle(p0, p1);
return TTrack::interpolationLinear(p0, p1, originalIndex/(original.size() - 1));
}
void
TModifierLine::modifyTrack(
const TTrack &track,
const TInputSavePoint::Holder &savePoint,
TTrackList &outTracks )
{
if (!track.handler) {
track.handler = new TTrackHandler(track);
Modifier *modifier = new Modifier(*track.handler);
modifier->savePoint = savePoint;
track.handler->tracks.push_back( new TTrack(modifier) );
}
if (!track.changed())
return;
if (track.handler->tracks.empty())
return;
TTrack &subTrack = *track.handler->tracks.front();
Modifier* modifier = dynamic_cast<Modifier*>(subTrack.modifier.getPointer());
if (!modifier)
{ track.resetChanges(); return; }
bool fixAngle = track.getKeyState(track.back()).isPressed(TKey::shift);
outTracks.push_back(track.handler->tracks.front());
int i1 = track.size();
int i0 = i1 - track.pointsAdded;
double maxPressure = modifier->maxPressure;
if (track.pointsRemoved)
{ maxPressure = 0; i0 = 0; }
for(int i = i0; i < i1; ++i) {
double p = track[i].pressure;
if (maxPressure < p) maxPressure = p;
}
modifier->maxPressure = maxPressure;
modifier->fixAngle = fixAngle;
if (track.finished())
modifier->savePoint.reset();
subTrack.truncate(0);
if (track.size() > 0) {
TTrackPoint p = track.front();
p.originalIndex = 0;
p.pressure = maxPressure;
p.tilt = TPointD();
subTrack.push_back(p);
}
if (track.size() > 1) {
TTrackPoint p = track.back();
p.originalIndex = track.size() - 1;
p.pressure = maxPressure;
p.tilt = TPointD();
if (fixAngle) calcFixedAngle(subTrack.front(), p);
subTrack.push_back(p);
}
track.resetChanges();
}