100 lines
2.7 KiB
C++
100 lines
2.7 KiB
C++
//
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// "$Id: arc.cxx 7978 2010-12-08 14:00:35Z AlbrechtS $"
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//
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// Arc drawing test program for the Fast Light Tool Kit (FLTK).
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//
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// Copyright 1998-2010 by Bill Spitzak and others.
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//
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// This library is free software; you can redistribute it and/or
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// modify it under the terms of the GNU Library General Public
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// License as published by the Free Software Foundation; either
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// version 2 of the License, or (at your option) any later version.
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//
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// This library is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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// Library General Public License for more details.
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//
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// You should have received a copy of the GNU Library General Public
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// License along with this library; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
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// USA.
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//
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// Please report all bugs and problems on the following page:
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//
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// http://www.fltk.org/str.php
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//
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#include <FL/Fl.H>
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#include <FL/Fl_Double_Window.H>
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#include <FL/Fl_Hor_Value_Slider.H>
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#include <FL/fl_draw.H>
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double args[6] = {140, 140, 50, 0, 360, 0};
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const char* name[6] = {"X", "Y", "R", "start", "end", "rotate"};
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class Drawing : public Fl_Widget {
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void draw() {
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fl_push_clip(x(),y(),w(),h());
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fl_color(FL_DARK3);
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fl_rectf(x(),y(),w(),h());
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fl_push_matrix();
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if (args[5]) {
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fl_translate(x()+w()/2.0, y()+h()/2.0);
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fl_rotate(args[5]);
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fl_translate(-(x()+w()/2.0), -(y()+h()/2.0));
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}
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fl_color(FL_WHITE);
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fl_translate(x(),y());
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fl_begin_complex_polygon();
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fl_arc(args[0],args[1],args[2],args[3],args[4]);
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fl_gap();
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fl_arc(140,140,20,0,-360);
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fl_end_complex_polygon();
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fl_color(FL_RED);
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fl_begin_line();
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fl_arc(args[0],args[1],args[2],args[3],args[4]);
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fl_end_line();
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fl_pop_matrix();
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fl_pop_clip();
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}
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public:
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Drawing(int X,int Y,int W,int H) : Fl_Widget(X,Y,W,H) {}
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};
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Drawing *d;
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void slider_cb(Fl_Widget* o, void* v) {
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Fl_Slider* s = (Fl_Slider*)o;
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args[fl_intptr_t(v)] = s->value();
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d->redraw();
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}
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int main(int argc, char** argv) {
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Fl_Double_Window window(300,500);
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Drawing drawing(10,10,280,280);
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d = &drawing;
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int y = 300;
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for (int n = 0; n<6; n++) {
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Fl_Slider* s = new Fl_Hor_Value_Slider(50,y,240,25,name[n]); y += 25;
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if (n<3) {s->minimum(0); s->maximum(300);}
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else if (n==5) {s->minimum(0); s->maximum(360);}
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else {s->minimum(-360); s->maximum(360);}
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s->step(1);
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s->value(args[n]);
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s->align(FL_ALIGN_LEFT);
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s->callback(slider_cb, (void*)n);
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}
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window.end();
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window.show(argc,argv);
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return Fl::run();
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}
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//
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// End of "$Id: arc.cxx 7978 2010-12-08 14:00:35Z AlbrechtS $".
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//
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