1 | // |
---|
2 | // "$Id: curve.cxx 7978 2010-12-08 14:00:35Z AlbrechtS $" |
---|
3 | // |
---|
4 | // Curve test program for the Fast Light Tool Kit (FLTK). |
---|
5 | // |
---|
6 | // Copyright 1998-2010 by Bill Spitzak and others. |
---|
7 | // |
---|
8 | // This library is free software; you can redistribute it and/or |
---|
9 | // modify it under the terms of the GNU Library General Public |
---|
10 | // License as published by the Free Software Foundation; either |
---|
11 | // version 2 of the License, or (at your option) any later version. |
---|
12 | // |
---|
13 | // This library is distributed in the hope that it will be useful, |
---|
14 | // but WITHOUT ANY WARRANTY; without even the implied warranty of |
---|
15 | // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
---|
16 | // Library General Public License for more details. |
---|
17 | // |
---|
18 | // You should have received a copy of the GNU Library General Public |
---|
19 | // License along with this library; if not, write to the Free Software |
---|
20 | // Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 |
---|
21 | // USA. |
---|
22 | // |
---|
23 | // Please report all bugs and problems on the following page: |
---|
24 | // |
---|
25 | // http://www.fltk.org/str.php |
---|
26 | // |
---|
27 | |
---|
28 | #include <FL/Fl.H> |
---|
29 | #include <FL/Fl_Double_Window.H> |
---|
30 | #include <FL/Fl_Hor_Value_Slider.H> |
---|
31 | #include <FL/fl_draw.H> |
---|
32 | #include <FL/Fl_Toggle_Button.H> |
---|
33 | |
---|
34 | double args[9] = { |
---|
35 | 20,20, 50,200, 100,20, 200,200, 0}; |
---|
36 | const char* name[9] = { |
---|
37 | "X0", "Y0", "X1", "Y1", "X2", "Y2", "X3", "Y3", "rotate"}; |
---|
38 | |
---|
39 | int points; |
---|
40 | |
---|
41 | class Drawing : public Fl_Widget { |
---|
42 | void draw() { |
---|
43 | fl_push_clip(x(),y(),w(),h()); |
---|
44 | fl_color(FL_DARK3); |
---|
45 | fl_rectf(x(),y(),w(),h()); |
---|
46 | fl_push_matrix(); |
---|
47 | if (args[8]) { |
---|
48 | fl_translate(x()+w()/2.0, y()+h()/2.0); |
---|
49 | fl_rotate(args[8]); |
---|
50 | fl_translate(-(x()+w()/2.0), -(y()+h()/2.0)); |
---|
51 | } |
---|
52 | fl_translate(x(),y()); |
---|
53 | if (!points) { |
---|
54 | fl_color(FL_WHITE); |
---|
55 | fl_begin_complex_polygon(); |
---|
56 | fl_curve(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]); |
---|
57 | fl_end_complex_polygon(); |
---|
58 | } |
---|
59 | fl_color(FL_BLACK); |
---|
60 | fl_begin_line(); |
---|
61 | fl_vertex(args[0],args[1]); |
---|
62 | fl_vertex(args[2],args[3]); |
---|
63 | fl_vertex(args[4],args[5]); |
---|
64 | fl_vertex(args[6],args[7]); |
---|
65 | fl_end_line(); |
---|
66 | fl_color(points ? FL_WHITE : FL_RED); |
---|
67 | points ? fl_begin_points() : fl_begin_line(); |
---|
68 | fl_curve(args[0],args[1],args[2],args[3],args[4],args[5],args[6],args[7]); |
---|
69 | points ? fl_end_points() : fl_end_line(); |
---|
70 | fl_pop_matrix(); |
---|
71 | fl_pop_clip(); |
---|
72 | } |
---|
73 | public: |
---|
74 | Drawing(int X,int Y,int W,int H) : Fl_Widget(X,Y,W,H) {} |
---|
75 | }; |
---|
76 | |
---|
77 | Drawing *d; |
---|
78 | |
---|
79 | void points_cb(Fl_Widget* o, void*) { |
---|
80 | points = ((Fl_Toggle_Button*)o)->value(); |
---|
81 | d->redraw(); |
---|
82 | } |
---|
83 | |
---|
84 | void slider_cb(Fl_Widget* o, void* v) { |
---|
85 | Fl_Slider* s = (Fl_Slider*)o; |
---|
86 | args[fl_intptr_t(v)] = s->value(); |
---|
87 | d->redraw(); |
---|
88 | } |
---|
89 | |
---|
90 | int main(int argc, char** argv) { |
---|
91 | Fl_Double_Window window(300,555); |
---|
92 | Drawing drawing(10,10,280,280); |
---|
93 | d = &drawing; |
---|
94 | |
---|
95 | int y = 300; |
---|
96 | for (int n = 0; n<9; n++) { |
---|
97 | Fl_Slider* s = new Fl_Hor_Value_Slider(50,y,240,25,name[n]); y += 25; |
---|
98 | s->minimum(0); s->maximum(280); |
---|
99 | if (n == 8) s->maximum(360); |
---|
100 | s->step(1); |
---|
101 | s->value(args[n]); |
---|
102 | s->align(FL_ALIGN_LEFT); |
---|
103 | s->callback(slider_cb, (void*)n); |
---|
104 | } |
---|
105 | Fl_Toggle_Button but(50,y,50,25,"points"); |
---|
106 | but.callback(points_cb); |
---|
107 | |
---|
108 | window.end(); |
---|
109 | window.show(argc,argv); |
---|
110 | return Fl::run(); |
---|
111 | } |
---|
112 | |
---|
113 | // |
---|
114 | // End of "$Id: curve.cxx 7978 2010-12-08 14:00:35Z AlbrechtS $". |
---|
115 | // |
---|