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/*
* Copyright © 2007 Chris Wilson
*
* Permission to use, copy, modify, distribute, and sell this software
* and its documentation for any purpose is hereby granted without
* fee, provided that the above copyright notice appear in all copies
* and that both that copyright notice and this permission notice
* appear in supporting documentation, and that the name of
* Chris Wilson not be used in advertising or publicity pertaining to
* distribution of the software without specific, written prior
* permission. Chris Wilson makes no representations about the
* suitability of this software for any purpose. It is provided "as
* is" without express or implied warranty.
*
* CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
* SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
* FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
* INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
* RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
* OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
* IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*
* Author: Chris Wilson <chris@chris-wilson.co.uk>
*/
#include "demo.h"
#define _USE_MATH_DEFINES /* for M_SQRT2 on win32 */
#include <math.h>
#include <string.h>
#include <stdio.h>
#include <signal.h>
#include <unistd.h>
#include <sys/time.h>
#ifndef MAX
#define MAX(a,b) ((a) >= (b) ? (a) : (b))
#endif
static void
add_rectangle (cairo_t *cr, double size)
{
double x, y;
if (size < .5)
return;
cairo_get_current_point (cr, &x, &y);
cairo_rel_move_to (cr, -size/2., -size/2.);
cairo_rel_line_to (cr, size, 0);
cairo_rel_line_to (cr, 0, size);
cairo_rel_line_to (cr, -size, 0);
cairo_close_path (cr);
cairo_save (cr);
cairo_translate (cr, -size/2., size);
cairo_move_to (cr, x, y);
cairo_rotate (cr, M_PI/4);
add_rectangle (cr, size / M_SQRT2);
cairo_restore (cr);
cairo_save (cr);
cairo_translate (cr, size/2., size);
cairo_move_to (cr, x, y);
cairo_rotate (cr, -M_PI/4);
add_rectangle (cr, size / M_SQRT2);
cairo_restore (cr);
}
static void
pythagoras (cairo_t *cr, int width, int height, double size)
{
cairo_set_source_rgb (cr, 1, 1, 1);
cairo_paint (cr);
cairo_save (cr);
cairo_translate (cr, 0, height);
cairo_scale (cr, 1, -1);
cairo_move_to (cr, width/2, height/2-2*size);
add_rectangle (cr, size);
cairo_set_source_rgb (cr, 0.05, 0.3, 0.05);
cairo_fill (cr);
cairo_restore (cr);
}
static int done;
static void signal_handler(int sig)
{
done = sig;
}
int main (int argc, char **argv)
{
struct device *device;
struct timeval start, last_tty, last_fps, now;
double delta;
int frame = 0;
int frames = 0;
int show_fps = 1;
int benchmark;
const char *version;
enum clip clip;
double size = 2;
int n;
device = device_open(argc, argv);
version = device_show_version(argc, argv);
clip = device_get_clip(argc, argv);
benchmark = device_get_benchmark(argc, argv);
if (benchmark == 0)
benchmark = 20;
if (benchmark > 0)
show_fps = 0;
signal(SIGHUP, signal_handler);
for (n = 1; n < argc; n++) {
if (strcmp (argv[n], "--hide-fps") == 0)
show_fps = 0;
}
gettimeofday(&start, 0); now = last_tty = last_fps = start;
do {
struct framebuffer *fb = device->get_framebuffer (device);
cairo_t *cr = cairo_create(fb->surface);
pythagoras(cr, device->width, device->height, size);
size *= 1.2;
if (size >= MAX(device->width, device->height))
size = 2;
gettimeofday(&now, NULL);
if (show_fps && last_fps.tv_sec) {
fps_draw(cr, device->name, version, &last_fps, &now);
}
last_fps = now;
cairo_destroy(cr);
fb->show (fb);
fb->destroy (fb);
if (benchmark < 0 && 0) {
delta = now.tv_sec - last_tty.tv_sec;
delta += (now.tv_usec - last_tty.tv_usec)*1e-6;
frames++;
if (delta > 5) {
printf("%.2f fps\n", frames/delta);
last_tty = now;
frames = 0;
}
}
frame++;
if (benchmark > 0) {
delta = now.tv_sec - start.tv_sec;
delta += (now.tv_usec - start.tv_usec)*1e-6;
if (delta > benchmark) {
printf("pythagoras: %.2f fps\n", frame / delta);
break;
}
}
} while (!done);
if (benchmark < 0) {
struct framebuffer *fb = device->get_framebuffer (device);
cairo_t *cr = cairo_create(fb->surface);
pythagoras(cr, device->width, device->height, 2048);
cairo_destroy(cr);
fps_finish(fb, device->name, version, "pythagoras");
fb->show (fb);
fb->destroy (fb);
pause();
}
return 0;
}
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