chromium/third_party/blink/renderer/platform/transforms/rotation.cc

/*
 * Copyright (C) 1999 Antti Koivisto ([email protected])
 * Copyright (C) 2004, 2005, 2006, 2007, 2008 Apple Inc. All rights reserved.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Library General Public
 * License as published by the Free Software Foundation; either
 * version 2 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this library; see the file COPYING.LIB.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
 * Boston, MA 02110-1301, USA.
 *
 */

#include "third_party/blink/renderer/platform/transforms/rotation.h"

#include "third_party/blink/renderer/platform/geometry/blend.h"
#include "ui/gfx/geometry/quaternion.h"
#include "ui/gfx/geometry/transform.h"

namespace blink {

Quaternion;

namespace {

const double kAngleEpsilon = …;

Quaternion ComputeQuaternion(const Rotation& rotation) { … }

gfx::Vector3dF NormalizeAxis(gfx::Vector3dF axis) { … }

Rotation ComputeRotation(Quaternion q) { … }

}  // namespace

bool Rotation::GetCommonAxis(const Rotation& a,
                             const Rotation& b,
                             gfx::Vector3dF& result_axis,
                             double& result_angle_a,
                             double& result_angle_b) { … }

Rotation Rotation::Slerp(const Rotation& from,
                         const Rotation& to,
                         double progress) { … }

Rotation Rotation::Add(const Rotation& a, const Rotation& b) { … }

}  // namespace blink