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#include <2geom/d2.h>
#include <2geom/sbasis.h>
#include <2geom/sbasis-2d.h>
#include <2geom/bezier-to-sbasis.h>
#include <2geom/sbasis-geometric.h>
#include <toys/path-cairo.h>
#include <toys/toy-framework-2.h>
#include <time.h>
using std::vector;
using namespace Geom;
using namespace std;
// TODO:
// use path2
// replace Ray stuff with path2 line segments.
//-----------------------------------------------
class PortionTester: public Toy {
PointSetHandle curve_handle;
PointHandle sample_point1, sample_point2;
std::vector<Toggle> toggles;
void mouse_pressed(GdkEventButton* e) override {
toggle_events(toggles, e);
Toy::mouse_pressed(e);
}
void draw(cairo_t *cr, std::ostringstream *notify, int width, int height, bool save, std::ostringstream *timer_stream) override {
draw_toggles(cr, toggles);
D2<SBasis> B = curve_handle.asBezier();
cairo_set_line_width (cr, 1);
cairo_set_source_rgba (cr, 0., 0.5, 0., 1);
cairo_d2_sb(cr, B);
cairo_stroke(cr);
sample_point1.pos[1]=400;
sample_point1.pos[0]=std::max(150.,sample_point1.pos[0]);
sample_point1.pos[0]=std::min(450.,sample_point1.pos[0]);
sample_point2.pos[1]=400;
sample_point2.pos[0]=std::max(150.,sample_point2.pos[0]);
sample_point2.pos[0]=std::min(450.,sample_point2.pos[0]);
cairo_move_to(cr, Geom::Point(150,400));
cairo_line_to(cr, Geom::Point(450,400));
cairo_set_source_rgba (cr, 0., 0., 0.5, 0.8);
cairo_stroke(cr);
double t0=std::max(0.,std::min(1.,(sample_point1.pos[0]-150)/300.));
double t1=std::max(0.,std::min(1.,(sample_point2.pos[0]-150)/300.));
Path P;
P.append(B);
if (toggles[0].on) {
if (toggles[1].on)
cairo_curve(cr, P.portion(t0,t1)[0]);
else
cairo_path(cr, P.portion(t0,t1));
} else
cairo_d2_sb(cr, portion(B,t0,t1));
cairo_set_source_rgba (cr, 0.5, 0.2, 0., 0.8);
cairo_stroke(cr);
Toy::draw(cr, notify, width, height, save,timer_stream);
}
public:
PortionTester(){
toggles.emplace_back("Path", true);
toggles[0].bounds = Rect(Point(10,100), Point(100, 130));
toggles.emplace_back("Curve", true);
toggles[1].bounds = Rect(Point(10,130), Point(100, 160));
if(handles.empty()) {
handles.push_back(&curve_handle);
handles.push_back(&sample_point1);
handles.push_back(&sample_point2);
for(unsigned i = 0; i < 4; i++)
curve_handle.push_back(150+uniform()*300,150+uniform()*300);
sample_point1.pos = Geom::Point(250,300);
sample_point2.pos = Geom::Point(350,300);
}
}
};
int main(int argc, char **argv) {
std::cout << "testing unit_normal(multidim_sbasis) based offset." << std::endl;
init(argc, argv, new PortionTester);
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:expandtab:shiftwidth = 4:tabstop = 8:softtabstop = 4:encoding = utf-8:textwidth = 99 :
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