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#include <2geom/d2.h>
#include <2geom/sbasis.h>
#include <2geom/path.h>
#include <2geom/pathvector.h>
#include <2geom/svg-path-parser.h>
#include <toys/path-cairo.h>
#include <toys/toy-framework-2.h>
#include <2geom/transforms.h>
#include <2geom/sbasis-geometric.h>
#include <2geom/sbasis-to-bezier.h>
#include <2geom/sbasis-math.h>
#include <cstdlib>
using namespace Geom;
Piecewise<SBasis > sore_tooth(Interval intv) {
Piecewise<SBasis > out;
double t = intv.min();
Point p(0,0);
out.push_cut(0);
double r = 20;
double dir = 0.5;
while(t < intv.max()) {
double nt = t + 10;
if(nt > intv.max())
nt = intv.max();
SBasis zag(r*Linear(dir,-dir));
out.push(zag, nt);
t = nt;
dir = -dir;
}
return out;
}
Piecewise< D2<SBasis> > zaggy(Interval intv, double dt, double radius) {
Piecewise<D2<SBasis> > out;
double t = intv.min();
Point p(0,0);
out.push_cut(0);
while(t < intv.max()) {
double nt = t + uniform()*dt;
if(nt > intv.max())
nt = intv.max();
Point np = Point((uniform()-0.5)*2*radius, (uniform()-0.5)*2*radius);
D2<SBasis> zag(SBasis(p[0],np[0]), SBasis(p[1],np[1]));
p = np;
//std::cout << t <<","<< nt << p << np << std::endl;
out.push(zag, nt);
t = nt;
}
return out;
}
class BoolOps: public Toy {
PathVector pv;
PointHandle offset_handle;
void draw(cairo_t *cr, std::ostringstream *notify, int width, int height, bool save, std::ostringstream *timer_stream) override {
Geom::Translate t(offset_handle.pos);
cairo_set_line_width(cr, 1);
cairo_set_source_rgb(cr, 0.75,0.75,1);
//cairo_shape(cr, bst);
cairo_path(cr, pv*t);
cairo_stroke(cr);
cairo_set_source_rgb(cr, 0,0,0);
for(const auto & i : pv) {
Piecewise<D2<SBasis> > B = i.toPwSb();
Piecewise<D2<SBasis> > n = rot90(unitVector(derivative(B)));
Piecewise<SBasis > al = arcLengthSb(B);
#if 0
Piecewise<D2<SBasis> > offset_curve = Piecewise<D2<SBasis> >(B)+n*offset;
PathVector offset_path = path_from_piecewise(offset_curve, 0.1);
cairo_path(cr, offset_path*t);
cairo_stroke(cr);
#endif
//Piecewise<D2<SBasis> > zz_curve = B+zaggy(B.domain(), 0.1, 20);//al*n;
//Piecewise<D2<SBasis> > zz_curve = Piecewise<D2<SBasis> >(B)+
// compose(sore_tooth(Interval(al.firstValue(),al.lastValue())), al)*n;
Piecewise<D2<SBasis> > zz_curve = Piecewise<D2<SBasis> >(B)+
sin(al*0.1)*10*n;
PathVector zz_path = path_from_piecewise(zz_curve, 0.1);
cairo_path(cr, zz_path*t);
cairo_stroke(cr);
}
for(const auto & i : pv) {
if(i.size() == 0) {
*notify << "naked moveto;";
} else
for(const auto & j : i) {
const Curve* c = &j;
*notify << typeid(*c).name() << ';' ;
}
}
Toy::draw(cr, notify, width, height, save,timer_stream);
}
public:
BoolOps () {}
void first_time(int argc, char** argv) override {
const char *path_b_name="star.svgd";
if(argc > 1)
path_b_name = argv[1];
pv = read_svgd(path_b_name);
std::cout << pv.size() << "\n";
std::cout << pv[0].size() << "\n";
pv *= Translate(-pv[0].initialPoint());
Rect bounds = *pv[0].boundsExact();
handles.push_back(&offset_handle);
offset_handle.pos = bounds.midpoint() - bounds.corner(0);
//bs = cleanup(pv);
}
};
int main(int argc, char **argv) {
init(argc, argv, new BoolOps());
return 0;
}
/*
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=4:softtabstop=4:fileencoding=utf-8:textwidth=99 :
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