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//
// "$Id$"
//
// Arc drawing test program for the Fast Light Tool Kit (FLTK).
//
// Copyright 1998-2015 by Bill Spitzak and others.
//
// This library is free software. Distribution and use rights are outlined in
// the file "COPYING" which should have been included with this file. If this
// file is missing or damaged, see the license at:
//
// http://www.fltk.org/COPYING.php
//
// Please report all bugs and problems on the following page:
//
// http://www.fltk.org/str.php
//
#include <FL/Fl.H>
#include <FL/Fl_Double_Window.H>
#include <FL/Fl_Hor_Value_Slider.H>
#include <FL/fl_draw.H>
double args[6] = {140, 140, 50, 0, 360, 0};
const char* name[6] = {"X", "Y", "R", "start", "end", "rotate"};
class Drawing : public Fl_Widget {
void draw() {
fl_push_clip(x(),y(),w(),h());
fl_color(FL_DARK3);
fl_rectf(x(),y(),w(),h());
fl_push_matrix();
if (args[5]) {
fl_translate(x()+w()/2.0, y()+h()/2.0);
fl_rotate(args[5]);
fl_translate(-(x()+w()/2.0), -(y()+h()/2.0));
}
fl_color(FL_WHITE);
fl_translate(x(),y());
fl_begin_complex_polygon();
fl_arc(args[0],args[1],args[2],args[3],args[4]);
fl_gap();
fl_arc(140,140,20,0,-360);
fl_end_complex_polygon();
fl_color(FL_RED);
fl_begin_line();
fl_arc(args[0],args[1],args[2],args[3],args[4]);
fl_end_line();
fl_pop_matrix();
fl_pop_clip();
}
public:
Drawing(int X,int Y,int W,int H) : Fl_Widget(X,Y,W,H) {}
};
Drawing *d;
void slider_cb(Fl_Widget* o, void* v) {
Fl_Slider* s = (Fl_Slider*)o;
args[fl_intptr_t(v)] = s->value();
d->redraw();
}
int main(int argc, char** argv) {
Fl_Double_Window window(300,500);
Drawing drawing(10,10,280,280);
d = &drawing;
int y = 300;
for (int n = 0; n<6; n++) {
Fl_Slider* s = new Fl_Hor_Value_Slider(50,y,240,25,name[n]); y += 25;
if (n<3) {s->minimum(0); s->maximum(300);}
else if (n==5) {s->minimum(0); s->maximum(360);}
else {s->minimum(-360); s->maximum(360);}
s->step(1);
s->value(args[n]);
s->align(FL_ALIGN_LEFT);
s->callback(slider_cb, (void*)(fl_intptr_t)n);
}
window.end();
window.show(argc,argv);
return Fl::run();
}
//
// End of "$Id$".
//
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