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Diffstat (limited to '')
-rw-r--r-- | src/3rdparty/2geom/src/toys/portion-test.cpp | 105 |
1 files changed, 105 insertions, 0 deletions
diff --git a/src/3rdparty/2geom/src/toys/portion-test.cpp b/src/3rdparty/2geom/src/toys/portion-test.cpp new file mode 100644 index 0000000..bc64db3 --- /dev/null +++ b/src/3rdparty/2geom/src/toys/portion-test.cpp @@ -0,0 +1,105 @@ +#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 : + + |