mirror of https://github.com/fltk/fltk
114 lines
3.1 KiB
C++
114 lines
3.1 KiB
C++
//
|
|
// "$Id: curve.cxx,v 1.4.2.3 2001/01/22 15:13:41 easysw Exp $"
|
|
//
|
|
// Curve test program for the Fast Light Tool Kit (FLTK).
|
|
//
|
|
// Copyright 1998-2001 by Bill Spitzak and others.
|
|
//
|
|
// This library is free software; you can redistribute it and/or
|
|
// modify it under the terms of the GNU Library General Public
|
|
// License as published by the Free Software Foundation; either
|
|
// version 2 of the License, or (at your option) any later version.
|
|
//
|
|
// This library is distributed in the hope that it will be useful,
|
|
// but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
|
|
// Library General Public License for more details.
|
|
//
|
|
// You should have received a copy of the GNU Library General Public
|
|
// License along with this library; if not, write to the Free Software
|
|
// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
|
|
// USA.
|
|
//
|
|
// Please report all bugs and problems to "fltk-bugs@fltk.org".
|
|
//
|
|
|
|
#include <FL/Fl.H>
|
|
#include <FL/Fl_Double_Window.H>
|
|
#include <FL/Fl_Hor_Value_Slider.H>
|
|
#include <FL/fl_draw.H>
|
|
#include <FL/Fl_Toggle_Button.H>
|
|
|
|
double args[9] = {
|
|
20,20, 50,200, 100,20, 200,200, 0};
|
|
const char* name[9] = {
|
|
"X0", "Y0", "X1", "Y1", "X2", "Y2", "X3", "Y3", "rotate"};
|
|
|
|
int points;
|
|
|
|
class Drawing : public Fl_Widget {
|
|
void draw() {
|
|
fl_clip(x(),y(),w(),h());
|
|
fl_color(FL_DARK3);
|
|
fl_rectf(x(),y(),w(),h());
|
|
fl_push_matrix();
|
|
if (args[8]) {
|
|
fl_translate(x()+w()/2.0, y()+h()/2.0);
|
|
fl_rotate(args[8]);
|
|
fl_translate(-(x()+w()/2.0), -(y()+h()/2.0));
|
|
}
|
|
fl_translate(x(),y());
|
|
if (!points) {
|
|
fl_color(FL_WHITE);
|
|
fl_begin_complex_polygon();
|
|
fl_curve(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
|
|
fl_end_complex_polygon();
|
|
}
|
|
fl_color(FL_BLACK);
|
|
fl_begin_line();
|
|
fl_vertex(args[0],args[1]);
|
|
fl_vertex(args[2],args[3]);
|
|
fl_vertex(args[4],args[5]);
|
|
fl_vertex(args[6],args[7]);
|
|
fl_end_line();
|
|
fl_color(points ? FL_WHITE : FL_RED);
|
|
points ? fl_begin_points() : fl_begin_line();
|
|
fl_curve(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]);
|
|
points ? fl_end_points() : 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 points_cb(Fl_Widget* o, void*) {
|
|
points = ((Fl_Toggle_Button*)o)->value();
|
|
d->redraw();
|
|
}
|
|
|
|
void slider_cb(Fl_Widget* o, void* v) {
|
|
Fl_Slider* s = (Fl_Slider*)o;
|
|
args[long(v)] = s->value();
|
|
d->redraw();
|
|
}
|
|
|
|
int main(int argc, char** argv) {
|
|
Fl_Double_Window window(300,555);
|
|
Drawing drawing(10,10,280,280);
|
|
d = &drawing;
|
|
|
|
int y = 300;
|
|
for (int n = 0; n<9; n++) {
|
|
Fl_Slider* s = new Fl_Hor_Value_Slider(50,y,240,25,name[n]); y += 25;
|
|
s->minimum(0); s->maximum(280);
|
|
if (n == 8) s->maximum(360);
|
|
s->step(1);
|
|
s->value(args[n]);
|
|
s->align(FL_ALIGN_LEFT);
|
|
s->callback(slider_cb, (void*)n);
|
|
}
|
|
Fl_Toggle_Button but(50,y,50,25,"points");
|
|
but.callback(points_cb);
|
|
|
|
window.end();
|
|
window.show(argc,argv);
|
|
return Fl::run();
|
|
}
|
|
|
|
//
|
|
// End of "$Id: curve.cxx,v 1.4.2.3 2001/01/22 15:13:41 easysw Exp $".
|
|
//
|