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#include "utils.h"

#include <assert.h>
#include <qglobal.h>

#include "qnum.h"

#define FloatToXFixed(i) (int)((i) * 65536)
#define IntToXFixed(i) ((i) << 16)

static double compute_x_at(XFixed y, XPointFixed p1, XPointFixed p2)
{
    double d = XFixedToDouble(p2.x - p1.x);
    return
        XFixedToDouble(p1.x) + d*XFixedToDouble(y - p1.y)/XFixedToDouble(p2.y - p1.y);
}

double compute_area(XTrapezoid *trap)
{
    double x1 = compute_x_at(trap->top, trap->left.p1, trap->left.p2);
    double x2 = compute_x_at(trap->top, trap->right.p1, trap->right.p2);
    double x3 = compute_x_at(trap->bottom, trap->left.p1, trap->left.p2);
    double x4 = compute_x_at(trap->bottom, trap->right.p1, trap->right.p2);

    double top = XFixedToDouble(trap->top);
    double bottom = XFixedToDouble(trap->bottom);
    double h = bottom - top;

    double top_base = x2 - x1;
    double bottom_base = x4 - x3;

    if ((top_base < 0 && bottom_base > 0)
        || (top_base > 0 && bottom_base < 0)) {
        double y0 = top_base*h/(top_base - bottom_base) + top;
        double area = qAbs(top_base * (y0 - top) / 2.);
        area += qAbs(bottom_base * (bottom - y0) /2.);
        return area;
    }


    return 0.5 * h * qAbs(top_base + bottom_base);
}

double compute_area_for_x(const QVector<XTrapezoid> &traps)
{
    double area = 0;

    for (int i = 0; i < traps.size(); ++i) {
        XTrapezoid trap = traps[i];
        area += compute_area(&trap);
    }
    return area;
}
/span></td><td>Senthil Kumaran</td><td><span title='2016-01-13 15:46:54 (GMT)'>2016-01-13</span></td><td>2</td><td>-205/+156</td></tr>
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<td colspan='5' class='logmsg'>
argparse.

Patch contributed by SilentGhost.


</td></tr>
<tr class='logheader'><td class='commitgraph'>* <span class='column3'>|</span> <span class='column4'>|</span> <span class='column6'>|</span> <span class='column1'>|</span> </td><td class='logsubject'><a href='/oss-git/cpython.git/commit/?id=121edbf7e26ad0ac887ac4a2bf46316deb05737e'>Issue25347 - Format the error message output of mock's assert_has_calls method.</a><span class='decoration'></span></td><td>Senthil Kumaran</td><td><span title='2016-01-12 14:18:32 (GMT)'>2016-01-12</span></td><td>1</td><td>-1/+1</td></tr>
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<td colspan='5' class='logmsg'>
Patch contributed by Robert Zimmerman.


</td></tr>
<tr class='logheader'><td class='commitgraph'>* <span class='column3'>|</span> <span class='column4'>|</span> <span class='column6'>|</span> <span class='column1'>|</span>   </td><td class='logsubject'><a href='/oss-git/cpython.git/commit/?id=2b06558769e23bd91d7dbb88dbfb6b5ed6e0054a'>#26001: merge with 3.5.</a><span class='decoration'></span></td><td>Ezio Melotti</td><td><span title='2016-01-12 09:27:58 (GMT)'>2016-01-12</span></td><td>1</td><td>-7/+8</td></tr>
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<tr class='logheader'><td class='commitgraph'><span class='column4'>|</span> * <span class='column4'>|</span> <span class='column6'>|</span> <span class='column1'>|</span> </td><td class='logsubject'><a href='/oss-git/cpython.git/commit/?id=397bb2486a50103ce4bea1cc1f60c78c93dbc56f'>#26001: mention in the tutorial that files in binary mode expect bytes, not str.</a><span class='decoration'></span></td><td>Ezio Melotti</td><td><span title='2016-01-12 09:27:30 (GMT)'>2016-01-12</span></td><td>1</td><td>-7/+8</td></tr>
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<tr class='logheader'><td class='commitgraph'>* <span class='column5'>|</span> <span class='column4'>|</span> <span class='column6'>|</span> <span class='column1'>|</span>   </td><td class='logsubject'><a href='/oss-git/cpython.git/commit/?id=997e6c1dd854cc35870525a0d434d9b01b6715d3'>#19006: merge with 3.5.</a><span class='decoration'></span></td><td>Ezio Melotti</td><td><span title='2016-01-12 09:03:54 (GMT)'>2016-01-12</span></td><td>1</td><td>-3/+4</td></tr>
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<tr class='logheader'><td class='commitgraph'><span class='column6'>|</span> * <span class='column4'>|</span> <span class='column6'>|</span> <span class='column1'>|</span> </td><td class='logsubject'><a href='/oss-git/cpython.git/commit/?id=f418db2e8cb21638448acbea0ce1d5bbfd0d903e'>#19006: fix wording in unittest docs.</a><span class='decoration'></span></td><td>Ezio Melotti</td><td><span title='2016-01-12 09:03:31 (GMT)'>2016-01-12</span></td><td>1</td><td>-3/+4</td></tr>
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<tr class='logheader'><td class='commitgraph'>* <span class='column1'>|</span> <span class='column4'>|</span> <span class='column6'>|</span> <span class='column1'>|</span>   </td><td class='logsubject'><a href='/oss-git/cpython.git/commit/?id=e2c9adb03baabc10096461ba658e728c51694660'>Closes #25348: Merge with 3.5</a><span class='decoration'></span></td><td>Zachary Ware</td><td><span title='2016-01-12 07:31:21 (GMT)'>2016-01-12</span></td><td>3</td><td>-53/+56</td></tr>
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<tr class='logheader'><td class='commitgraph'><span class='column2'>|</span> * <span class='column4'>|</span> <span class='column6'>|</span> <span class='column1'>|</span> </td><td class='logsubject'><a href='/oss-git/cpython.git/commit/?id=bed30c37d82a4fdb69e7b82ca5089ff004a2987f'>Issue #25348: Add --pgo and --pgo-job flags to PCbuild\build.bat</a><span class='decoration'></span></td><td>Zachary Ware</td><td><span title='2016-01-12 07:26:50 (GMT)'>2016-01-12</span>