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/*
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 * Copyright © 2011 Intel Corporation
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 *
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 * Permission is hereby granted, free of charge, to any person
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 * obtaining a copy of this software and associated documentation
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 * files (the "Software"), to deal in the Software without
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 * restriction, including without limitation the rights to use, copy,
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 * modify, merge, publish, distribute, sublicense, and/or sell copies
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 * of the Software, and to permit persons to whom the Software is
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 * furnished to do so, subject to the following conditions:
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 *
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 * The above copyright notice and this permission notice shall be
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 * included in all copies or substantial portions of the Software.
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 *
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 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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 * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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 * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
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 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS
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 * BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN
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 * ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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 * 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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static const double m_1_sqrt_3 = 0.577359269;

            

        

            

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static void

            

        

            

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T (cairo_t *cr, int size)

            

        

            

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{

            

        

            

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    cairo_move_to (cr, 0, 0);

            

        

            

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    cairo_line_to (cr, size, 0);

            

        

            

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    cairo_line_to (cr, size/2, size*m_1_sqrt_3);

            

        

            

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    size /= 2;

            

        

            

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    if (size >= 4) {

            

        

            

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	T (cr, size);

            

        

            

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	cairo_save (cr); {

            

        

            

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	    cairo_translate (cr, size, 0);

            

        

            

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	    T (cr, size);

            

        

            

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	} cairo_restore (cr);

            

        

            

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	cairo_save (cr); {

            

        

            

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	    cairo_translate (cr, size/2, size*m_1_sqrt_3);

            

        

            

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	    T (cr, size);

            

        

            

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	} cairo_restore (cr);

            

        

            

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    }

            

        

            

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}

            

        

            

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static cairo_time_t

            

        

            

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

            

        

            

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{

            

        

            

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    int t_height = height/2;

            

        

            

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    int t_width = t_height / m_1_sqrt_3;

            

        

            

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    cairo_set_source_rgb (cr, 1, 1, 1);

            

        

            

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    cairo_paint (cr);

            

        

            

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    cairo_set_source_rgb (cr, 0, 0, 0);

            

        

            

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    cairo_set_line_width (cr, 1.);

            

        

            

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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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	T (cr, t_width);

            

        

            

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	cairo_translate (cr, 0, height);

            

        

            

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	cairo_scale (cr, 1, -1);

            

        

            

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	T (cr, t_width);

            

        

            

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	cairo_stroke (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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sierpinski_enabled (cairo_perf_t *perf)

            

        

            

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{

            

        

            

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    return cairo_perf_can_run (perf, "sierpinski", NULL);

            

        

            

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}

            

        

            

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void

            

        

            

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

            

        

            

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{

            

        

            

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    cairo_perf_run (perf, "sierpinski", draw, NULL);

            

        

            

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}