// // "$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 #include #include #include #include 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 $". //