diff options
| -rw-r--r-- | test/cube.cxx | 160 |
1 files changed, 123 insertions, 37 deletions
diff --git a/test/cube.cxx b/test/cube.cxx index db15d702e..2fc97b9b4 100644 --- a/test/cube.cxx +++ b/test/cube.cxx @@ -16,7 +16,18 @@ // https://www.fltk.org/bugs.php // -#include <config.h> +// Define 'HAVE_GL=1' on the compiler commandline to build this program +// w/o 'config.h' (needs FLTK lib with GL). +// $ fltk-config --use-gl --compile cube.cxx -DHAVE_GL=1 +// Use '-DHAVE_GL=0' to build and test w/o OpenGL support. + +#ifndef HAVE_GL +#include <config.h> // needed only for 'HAVE_GL' +#endif + +// ... or uncomment the next line to test w/o OpenGL (see also above) +// #undef HAVE_GL + #include <FL/Fl.H> #include <FL/fl_ask.H> #include <FL/Fl_Window.H> @@ -27,7 +38,23 @@ #include <FL/Fl_Sys_Menu_Bar.H> #include <FL/Fl_Printer.H> // demo printing #include <FL/Fl_Grid.H> // grid layout -#include <stdlib.h> + +// Glocal constants and variables + +const int FPS = 25; // desired frame rate (independent of speed slider) +const int MAX_LOOP = 0; // <= 0: no limit, >0: max. timer (draw) iterations +int iters = 0; // total loop (draw) iterations +int done = 0; // set to 1 in exit button callback +Fl_Timestamp start; // taken at start of main + +// Pointers to widgets + +class cube_box; // forward declaration + +Fl_Window *form; +Fl_Slider *speed, *size; +Fl_Button *exit_button, *wire, *flat; +cube_box *lt_cube, *rt_cube; #if !HAVE_GL class cube_box : public Fl_Box { @@ -36,7 +63,7 @@ public: int wire; double size; double speed; - cube_box(int x,int y,int w,int h,const char *l=0) :Fl_Box(FL_DOWN_BOX,x,y,w,h,l) { + cube_box(int x,int y,int w,int h,const char *l=0) : Fl_Box(FL_DOWN_BOX,x,y,w,h,l) { label("This demo does\nnot work without GL"); } }; @@ -95,7 +122,7 @@ void drawcube(int wire) { } void cube_box::draw() { - lasttime = lasttime+speed; + lasttime = lasttime + speed; if (!valid()) { glLoadIdentity(); glViewport(0,0,pixel_w(),pixel_h()); @@ -153,15 +180,59 @@ void overlay_button(cube_box *cube) { #endif // HAVE_GL -Fl_Window *form; -Fl_Slider *speed, *size; -Fl_Button *exit_button, *wire, *flat; -cube_box *lt_cube, *rt_cube; -int done = 0; // set to 1 in exit button callback +void exit_cb(Fl_Widget *w = NULL, void *v = NULL) { + + // display performance data on stdout and (for Windows!) in a message window + + double runtime = Fl::seconds_since(start); + char buffer[120]; + + sprintf(buffer, "Iterations = %4d, runtime = %7.3f sec, fps = %5.2f, requested: %d", + iters, runtime, iters / runtime, FPS); + printf("%s\n", buffer); + fflush(stdout); + + int choice = fl_choice(buffer, "Continue", "Exit", NULL); + if (choice == 1) { + // exit program, close all windows + done = 1; + Fl::hide_all_windows(); // return from Fl::run() + } +} + +#if HAVE_GL + +void timer_cb(void *data) { + iters++; + if (done || (MAX_LOOP > 0 && iters >= MAX_LOOP)) { + exit_cb(); + return; + } + lt_cube->redraw(); + rt_cube->redraw(); + Fl::repeat_timeout(1.0/FPS, timer_cb); +} + +#endif // HAVE_GL + +void speed_cb(Fl_Widget *w, void *) { + lt_cube->speed = rt_cube->speed = ((Fl_Slider *)w)->value(); +} + +void size_cb(Fl_Widget *w, void *) { + lt_cube->size = rt_cube->size = ((Fl_Slider *)w)->value(); +} -// exit button callback -void exit_cb(Fl_Widget *w, void *) { - done = 1; +void flat_cb(Fl_Widget *w, void *) { + int flat = ((Fl_Light_Button *)w)->value(); + lt_cube->wire = 1 - flat; + rt_cube->wire = flat; +} + +void wire_cb(Fl_Widget *w, void *) { + int wire = ((Fl_Light_Button *)w)->value(); + lt_cube->wire = wire; + rt_cube->wire = 1 - wire; } // print screen demo @@ -234,8 +305,9 @@ void makeform(const char *name) { flat = new Fl_Radio_Light_Button( 0, 0, 100, 25, "Flat"); speed = new Fl_Slider(FL_VERT_SLIDER, 0, 0, 40, 90, "Speed"); size = new Fl_Slider(FL_VERT_SLIDER, 0, 0, 40, 90, "Size"); - exit_button = new Fl_Button( 0, 0, 100, 25, "Exit"); + exit_button = new Fl_Button( 0, 0, 100, 25, "Stats / Exit"); exit_button->callback(exit_cb); + exit_button->tooltip("Display statistics (fps) and\nchoose to exit or continue\n"); // right GL window rt_cube = new cube_box(0, 0, 350, 350); @@ -263,43 +335,57 @@ int main(int argc, char **argv) { Fl::use_high_res_GL(1); Fl::set_color(FL_FREE_COLOR, 255, 255, 0, 75); makeform(argv[0]); - speed->bounds(4, 0); - speed->value(lt_cube->speed = rt_cube->speed = 1.0); + + speed->bounds(6, 0); + speed->value(lt_cube->speed = rt_cube->speed = 2.0); + speed->callback(speed_cb); + size->bounds(4, 0.2); size->value(lt_cube->size = rt_cube->size = 2.0); - flat->value(1); lt_cube->wire = 0; rt_cube->wire = 1; + size->callback(size_cb); + + flat->value(1); + flat->callback(flat_cb); + wire->value(0); + wire->callback(wire_cb); + form->label("Cube Demo"); form->show(argc,argv); lt_cube->show(); rt_cube->show(); -#if 0 + lt_cube->wire = wire->value(); + rt_cube->wire = !wire->value(); + lt_cube->size = rt_cube->size = size->value(); + lt_cube->speed = rt_cube->speed = speed->value(); + lt_cube->redraw(); + rt_cube->redraw(); + +#if HAVE_GL + +#if (0) // share OpenGL contexts + // This demonstrates how to manipulate OpenGL contexts. // In this case the same context is used by multiple windows (I'm not // sure if this is allowed on Win32, can somebody check?). // This fixes a bug on the XFree86 3.0 OpenGL where only one context per // program seems to work, but there are probably better uses for this! - lt_cube->make_current(); // causes context to be created + + lt_cube->make_current(); // causes context to be created rt_cube->context(lt_cube->context()); // share the contexts -#endif -#if HAVE_GL - for (;;) { - if (form->visible() && speed->value()) { - if (!Fl::check()) break; // returns immediately - } else { - if (!Fl::wait()) break; // waits until something happens - } - lt_cube->wire = wire->value(); - rt_cube->wire = !wire->value(); - lt_cube->size = rt_cube->size = size->value(); - lt_cube->speed = rt_cube->speed = speed->value(); - lt_cube->redraw(); - rt_cube->redraw(); - if (done) break; // exit button was clicked - } - return 0; -#else - while (!done) Fl::wait(); +#endif // share OpenGL contexts + + // with GL: use a timer for drawing and measure performance + + Fl::add_timeout(0.01, timer_cb); // start timer + start = Fl::now(); + int ret = Fl::run(); + return ret; + +#else // w/o GL: no timer, no performance report + + return Fl::run(); + #endif } |