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// Copyright (C) 2016 The Qt Company Ltd.
// Copyright (C) 2013 Kitware, Inc.
// SPDX-License-Identifier: LicenseRef-Qt-Commercial OR GPL-3.0-only WITH Qt-GPL-exception-1.0
#include "transform.h"
#include <cmath>
Point applyHomogeneousTransform(const Point &in,
double m11, double m12, double m13,
double m21, double m22, double m23,
double m31, double m32, double m33,
bool *okay)
{
double x = m11 * in.x() + m12 * in.y() + m13;
double y = m21 * in.x() + m22 * in.y() + m23;
double w = m31 * in.x() + m32 * in.y() + m33;
if (std::isfinite(w) && fabs(w) > 1e-10) {
if (okay)
*okay = true;
return {x / w, y / w};
}
if (okay)
*okay = false;
return {};
}
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