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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 "cairo-perf.h"
#include <math.h>
static void
add_rectangle (cairo_t *cr, double size)
{
double x, y;
if (size < 1)
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 cairo_perf_ticks_t
do_pythagoras_tree (cairo_t *cr, int width, int height, int loops)
{
double size = 128;
cairo_perf_timer_start ();
while (loops--) {
cairo_save (cr);
cairo_translate (cr, 0, height);
cairo_scale (cr, 1, -1);
cairo_move_to (cr, width/2, size/2);
add_rectangle (cr, size);
cairo_set_source_rgb (cr, 0., 0., 0.);
cairo_fill (cr);
cairo_restore (cr);
}
cairo_perf_timer_stop ();
return cairo_perf_timer_elapsed ();
}
void
pythagoras_tree (cairo_perf_t *perf, cairo_t *cr, int width, int height)
{
if (! cairo_perf_can_run (perf, "pythagoras-tree", NULL))
return;
cairo_perf_run (perf, "pythagoras-tree", do_pythagoras_tree);
}
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