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/*
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 * Copyright © 2007 Chris Wilson
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 *
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 * Permission to use, copy, modify, distribute, and sell this software
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 * and its documentation for any purpose is hereby granted without
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 * fee, provided that the above copyright notice appear in all copies
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 * and that both that copyright notice and this permission notice
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 * appear in supporting documentation, and that the name of
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 * Chris Wilson not be used in advertising or publicity pertaining to
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 * distribution of the software without specific, written prior
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 * permission. Chris Wilson makes no representations about the
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 * suitability of this software for any purpose.  It is provided "as
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 * is" without express or implied warranty.
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 *
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 * CHRIS WILSON DISCLAIMS ALL WARRANTIES WITH REGARD TO THIS
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 * SOFTWARE, INCLUDING ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND
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 * FITNESS, IN NO EVENT SHALL CHRIS WILSON BE LIABLE FOR ANY SPECIAL,
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 * INDIRECT OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES WHATSOEVER
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 * RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION
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 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR
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 * IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
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 *
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 * Author: Chris Wilson <chris@chris-wilson.co.uk>
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 */
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#include "cairo-perf.h"

            

        

            

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#define _USE_MATH_DEFINES /* for M_SQRT2 on win32 */

            

        

            

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#include <math.h>

            

        

            

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static void

            

        

            

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add_rectangle (cairo_t *cr, double size)

            

        

            

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{

            

        

            

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    double x, y;

            

        

            

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    if (size < 1)

            

        

            

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	return;

            

        

            

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    cairo_get_current_point (cr, &x, &y);

            

        

            

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    cairo_rel_move_to (cr, -size/2., -size/2.);

            

        

            

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    cairo_rel_line_to (cr, size, 0);

            

        

            

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    cairo_rel_line_to (cr, 0, size);

            

        

            

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    cairo_rel_line_to (cr, -size, 0);

            

        

            

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    cairo_close_path (cr);

            

        

            

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    cairo_save (cr);

            

        

            

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    cairo_translate (cr, -size/2., size);

            

        

            

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    cairo_move_to (cr, x, y);

            

        

            

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    cairo_rotate (cr, M_PI/4);

            

        

            

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    add_rectangle (cr, size / M_SQRT2);

            

        

            

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    cairo_restore (cr);

            

        

            

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    cairo_save (cr);

            

        

            

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    cairo_translate (cr, size/2., size);

            

        

            

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    cairo_move_to (cr, x, y);

            

        

            

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    cairo_rotate (cr, -M_PI/4);

            

        

            

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    add_rectangle (cr, size / M_SQRT2);

            

        

            

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    cairo_restore (cr);

            

        

            

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}

            

        

            

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static cairo_time_t

            

        

            

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do_pythagoras_tree (cairo_t *cr, int width, int height, int loops)

            

        

            

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{

            

        

            

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    double size = 128;

            

        

            

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    cairo_perf_timer_start ();

            

        

            

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    while (loops--) {

            

        

            

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	cairo_save (cr);

            

        

            

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	cairo_translate (cr, 0, height);

            

        

            

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	cairo_scale (cr, 1, -1);

            

        

            

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	cairo_move_to (cr, width/2, size/2);

            

        

            

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	add_rectangle (cr, size);

            

        

            

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	cairo_set_source_rgb (cr, 0., 0., 0.);

            

        

            

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	cairo_fill (cr);

            

        

            

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	cairo_restore (cr);

            

        

            

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    }

            

        

            

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    cairo_perf_timer_stop ();

            

        

            

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    return cairo_perf_timer_elapsed ();

            

        

            

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}

            

        

            

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cairo_bool_t

            

        

            

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pythagoras_tree_enabled (cairo_perf_t *perf)

            

        

            

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{

            

        

            

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    return cairo_perf_can_run (perf, "pythagoras-tree", NULL);

            

        

            

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}

            

        

            

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void

            

        

            

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pythagoras_tree (cairo_perf_t *perf, cairo_t *cr, int width, int height)

            

        

            

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{

            

        

            

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    cairo_perf_run (perf, "pythagoras-tree", do_pythagoras_tree, NULL);

            

        

            

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}