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/**
* \file
* \brief Satellite a per ?node/curve holder of data.
*/ /*
* Authors:
* 2015 Jabier Arraiza Cenoz<jabier.arraiza@marker.es>
*
* This code is in public domain
*/
#include <helper/geom-satellite.h>
#include <2geom/curve.h>
#include <2geom/nearest-point.h>
#include <2geom/sbasis-geometric.h>
#include <2geom/path-intersection.h>
#include <2geom/sbasis-to-bezier.h>
#include <2geom/ray.h>
#include <boost/optional.hpp>
namespace Geom {
/**
* @brief Satellite a per ?node/curve holder of data.
*/
Satellite::Satellite() {}
;
Satellite::Satellite(SatelliteType satelliteType, bool isTime, bool active,
bool hasMirror, bool hidden, double amount, double angle,
size_t steps)
: satelliteType(satelliteType), isTime(isTime), active(active),
hasMirror(hasMirror), hidden(hidden), amount(amount), angle(angle),
steps(steps) {}
;
Satellite::~Satellite() {}
;
/**
* Calculate the time in d2_in with a size of A
*/
double Satellite::toTime(double A, Geom::D2<Geom::SBasis> d2_in) const
{
if (!d2_in.isFinite() || d2_in.isZero() || A == 0) {
return 0;
}
double t = 0;
double lenghtPart = Geom::length(d2_in, Geom::EPSILON);
if (A > lenghtPart || d2_in[0].degreesOfFreedom() == 2) {
if (lenghtPart != 0) {
t = A / lenghtPart;
}
} else if (d2_in[0].degreesOfFreedom() != 2) {
Geom::Piecewise<Geom::D2<Geom::SBasis> > u;
u.push_cut(0);
u.push(d2_in, 1);
std::vector<double> t_roots = roots(arcLengthSb(u) - A);
if (t_roots.size() > 0) {
t = t_roots[0];
}
}
return t;
}
/**
* Calculate the size in d2_in with a point at A
*/
double Satellite::toSize(double A, Geom::D2<Geom::SBasis> d2_in) const
{
if (!d2_in.isFinite() || d2_in.isZero() || A == 0) {
return 0;
}
double s = 0;
double lenghtPart = Geom::length(d2_in, Geom::EPSILON);
if (A > lenghtPart || d2_in[0].degreesOfFreedom() == 2) {
s = (A * lenghtPart);
} else if (d2_in[0].degreesOfFreedom() != 2) {
Geom::Piecewise<Geom::D2<Geom::SBasis> > u;
u.push_cut(0);
u.push(d2_in, 1);
u = Geom::portion(u, 0.0, A);
s = Geom::length(u, 0.001);
}
return s;
}
/**
* Calculate the lenght of a satellite from a radious A input.
*/
double Satellite::radToLen(
double A, boost::optional<Geom::D2<Geom::SBasis> > d2_in,
Geom::D2<Geom::SBasis> d2_out,
boost::optional<Geom::Satellite> previousSatellite) const
{
double len = 0;
if (d2_in && previousSatellite) {
Piecewise<D2<SBasis> > offset_curve0 =
Piecewise<D2<SBasis> >(*d2_in) +
rot90(unitVector(derivative(*d2_in))) * (A);
Piecewise<D2<SBasis> > offset_curve1 =
Piecewise<D2<SBasis> >(d2_out) +
rot90(unitVector(derivative(d2_out))) * (A);
Geom::Path p0 = path_from_piecewise(offset_curve0, 0.1)[0];
Geom::Path p1 = path_from_piecewise(offset_curve1, 0.1)[0];
Geom::Crossings cs = Geom::crossings(p0, p1);
if (cs.size() > 0) {
Point cp = p0(cs[0].ta);
double p0pt = nearest_point(cp, d2_out);
len = (*previousSatellite).toSize(p0pt, d2_out);
} else {
if (A > 0) {
len = radToLen(A * -1, *d2_in, d2_out, previousSatellite);
}
}
}
return len;
}
/**
* Calculate the radious of a satellite from a lenght A input.
*/
double Satellite::lenToRad(
double A, boost::optional<Geom::D2<Geom::SBasis> > d2_in,
Geom::D2<Geom::SBasis> d2_out,
boost::optional<Geom::Satellite> previousSatellite) const
{
if (d2_in && previousSatellite) {
double time_in = (*previousSatellite).time(A, true, *d2_in);
double time_out = (*previousSatellite).toTime(A, d2_out);
Geom::Point startArcPoint = (*d2_in).valueAt(time_in);
Geom::Point endArcPoint = d2_out.valueAt(time_out);
Piecewise<D2<SBasis> > u;
u.push_cut(0);
u.push(*d2_in, 1);
Geom::Curve *C = path_from_piecewise(u, 0.1)[0][0].duplicate();
Piecewise<D2<SBasis> > u2;
u2.push_cut(0);
u2.push(d2_out, 1);
Geom::Curve *D = path_from_piecewise(u2, 0.1)[0][0].duplicate();
Curve *knotCurve1 = C->portion(0, time_in);
Curve *knotCurve2 = D->portion(time_out, 1);
Geom::CubicBezier const *cubic1 =
dynamic_cast<Geom::CubicBezier const *>(&*knotCurve1);
Ray ray1(startArcPoint, (*d2_in).valueAt(1));
if (cubic1) {
ray1.setPoints((*cubic1)[2], startArcPoint);
}
Geom::CubicBezier const *cubic2 =
dynamic_cast<Geom::CubicBezier const *>(&*knotCurve2);
Ray ray2(d2_out.valueAt(0), endArcPoint);
if (cubic2) {
ray2.setPoints(endArcPoint, (*cubic2)[1]);
}
bool ccwToggle = cross((*d2_in).valueAt(1) - startArcPoint,
endArcPoint - startArcPoint) < 0;
double distanceArc =
Geom::distance(startArcPoint, middle_point(startArcPoint, endArcPoint));
double angleBetween = angle_between(ray1, ray2, ccwToggle);
double divisor = std::sin(angleBetween / 2.0);
if (divisor > 0) {
return distanceArc / divisor;
}
}
return 0;
}
/**
* Get the time position of the satellite in d2_in
*/
double Satellite::time(Geom::D2<Geom::SBasis> d2_in) const
{
double t = amount;
if (!isTime) {
t = toTime(t, d2_in);
}
if (t > 1) {
t = 1;
}
return t;
}
/**.
* Get the time from a lenght A in other curve, a bolean I gived to reverse time
*/
double Satellite::time(double A, bool I,
Geom::D2<Geom::SBasis> d2_in) const
{
if (A == 0 && I) {
return 1;
}
if (A == 0 && !I) {
return 0;
}
if (!I) {
return toTime(A, d2_in);
}
double lenghtPart = Geom::length(d2_in, Geom::EPSILON);
A = lenghtPart - A;
return toTime(A, d2_in);
}
/**
* Get the lenght of the satellite in d2_in
*/
double Satellite::size(Geom::D2<Geom::SBasis> d2_in) const
{
double s = amount;
if (isTime) {
s = toSize(s, d2_in);
}
return s;
}
/**
* Get the point position of the satellite
*/
Geom::Point Satellite::getPosition(Geom::D2<Geom::SBasis> d2_in) const
{
double t = time(d2_in);
return d2_in.valueAt(t);
}
/**
* Set the position of the satellite from a gived point P
*/
void Satellite::setPosition(Geom::Point p, Geom::D2<Geom::SBasis> d2_in)
{
double A = Geom::nearest_point(p, d2_in);
if (!isTime) {
A = toSize(A, d2_in);
}
amount = A;
}
/**
* Map a satellite type with gchar
*/
void Satellite::setSatelliteType(gchar const *A)
{
std::map<std::string, SatelliteType> GcharMapToSatelliteType =
boost::assign::map_list_of("F", F)("IF", IF)("C", C)("IC", IC)("KO", KO);
satelliteType = GcharMapToSatelliteType.find(std::string(A))->second;
}
/**
* Map a gchar with satelliteType
*/
gchar const *Satellite::getSatelliteTypeGchar() const
{
std::map<SatelliteType, gchar const *> SatelliteTypeToGcharMap =
boost::assign::map_list_of(F, "F")(IF, "IF")(C, "C")(IC, "IC")(KO, "KO");
return SatelliteTypeToGcharMap.at(satelliteType);
}
} //namespace Geom
/*
Local Variables:
mode:c++
c-file-style:"stroustrup"
c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
indent-tabs-mode:nil
fill-column:99
End:
*/
// vim:
// filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:fileencoding=utf-8:textwidth=99
// :
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