unsigned layprop::SDLine::nonius(const DBline& short_mark, const DBline& long_mark,
const real step, LineList& llst) const
{
// prepare the translation matrix for the edge point
CTM tmtrx;
tmtrx.Rotate(_angle);
tmtrx.Translate(_ln.p1().x(), _ln.p1().y());
unsigned numtics;
for( numtics = 0 ; (numtics * step) < _length ; numtics++ )
{
// for each tick - get the deltas ...
int4b deltaX = (int4b) rint(numtics * step * _cosinus);
int4b deltaY = (int4b) rint(numtics * step * _sinus);
// ... calculate the translation ...
CTM pmtrx = tmtrx;
pmtrx.Translate(deltaX, deltaY);
// ... create a new tick and move it to its position
if (numtics % 5)
llst.push_back(DBline(short_mark * pmtrx));
else
llst.push_back(DBline(long_mark * pmtrx));
}
// don't forget the opposite edge point
tmtrx.Translate(_ln.p2().x() - _ln.p1().x(), _ln.p2().y() - _ln.p1().y());
llst.push_back(DBline(long_mark * tmtrx));
return ++numtics;
}
void layprop::SupplementaryData::getConsts(const CTM& LayCTM, DBline& long_mark, DBline& short_mark, DBline& text_bp, double& scaledpix)
{
// Side ticks (segments) of the rulers has to be with constant size. The next lines
// are generating a segment with the size 7/3 screen pixels centered in
// the {0,0} point of the canvas (logical coords)
// the coeffitients 1e3/1e-3 are picked ramdomly attempting to reduce the
// error
const double ico = 1e3;
const double dco = 1/ico;
DBline tick_sample = DBline(TP(0,0),TP(0,7,ico)) * LayCTM;
double tick_size = ((double)(tick_sample.p2().y()-tick_sample.p1().y()));
long_mark = DBline(TP(0,-tick_size, dco),TP(0,tick_size, dco));
tick_sample = DBline(TP(0,0),TP(0,3,ico)) * LayCTM;
tick_size = ((double)(tick_sample.p2().y()-tick_sample.p1().y()));
short_mark = DBline(TP(0,-tick_size, dco),TP(0,tick_size, dco));
tick_sample = DBline(TP(0,0),TP(0,20,ico)) * LayCTM;
tick_size = ((double)(tick_sample.p1().y()-tick_sample.p2().y()));
text_bp = DBline(TP(0,0),TP(0,tick_size, dco));
// now prepare to draw the size
DBbox pixelbox = DBbox(TP(),TP(15,15)) * LayCTM;
scaledpix = ((double)(pixelbox.p2().x()-pixelbox.p1().x()));
}
void trend::TrendBase::genRulerMarks(const CTM& LayCTM, DBline& long_mark, DBline& short_mark, DBline& text_bp, double& scaledpix)
{
// Side ticks (segments) of the rulers has to be with constant size. The next
// lines are generating a segment with the size 7/3 screen pixels centred in
// the {0,0} point of the canvas (logical coordinates)
// The coefficients 1e3/1e-3 are picked arbitrary in an attempt to reduce the
// error
const double ico = 1e3;
const double dco = 1/ico;
DBline tick_sample = DBline(TP(0,0),TP(0,7,ico)) * LayCTM;
double tick_size = ((double)(tick_sample.p2().y()-tick_sample.p1().y()));
long_mark = DBline(TP(0,-tick_size, dco),TP(0,tick_size, dco));
tick_sample = DBline(TP(0,0),TP(0,3,ico)) * LayCTM;
tick_size = ((double)(tick_sample.p2().y()-tick_sample.p1().y()));
short_mark = DBline(TP(0,-tick_size, dco),TP(0,tick_size, dco));
tick_sample = DBline(TP(0,0),TP(0,20,ico)) * LayCTM;
tick_size = ((double)(tick_sample.p1().y()-tick_sample.p2().y()));
text_bp = DBline(TP(0,0),TP(0,tick_size, dco));
// now prepare to draw the size
DBbox pixelbox = DBbox(TP(),TP(15,15)) * LayCTM;
scaledpix = ((double)(pixelbox.p2().x()-pixelbox.p1().x()));
}
