/* -*- Mode: C++; tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 4 -*- */ /* * This file is part of the LibreOffice project. * * This Source Code Form is subject to the terms of the Mozilla Public * License, v. 2.0. If a copy of the MPL was not distributed with this * file, You can obtain one at http://mozilla.org/MPL/2.0/. * * This file incorporates work covered by the following license notice: * * Licensed to the Apache Software Foundation (ASF) under one or more * contributor license agreements. See the NOTICE file distributed * with this work for additional information regarding copyright * ownership. The ASF licenses this file to you under the Apache * License, Version 2.0 (the "License"); you may not use this file * except in compliance with the License. You may obtain a copy of * the License at http://www.apache.org/licenses/LICENSE-2.0 .
*/
if (aDiff.getY() == 0)
{
aPrj.setY(-1.0);
} else
{ // aPrj = Projection from aDiff on the XZ-plane
aPrj.setY(0.0);
if (aDiff.getY() < 0.0)
{
aPrj = -aPrj;
}
}
// Calculate from aDiff to upwards pointing View-Up-Vector // duplicated line is intentional!
aPrj = aPrj.getPerpendicular(aDiff);
aPrj = aPrj.getPerpendicular(aDiff);
aDiff.normalize();
// Rotate on Z axis, to rotate the BankAngle and back
basegfx::B3DHomMatrix aTf; constdouble fV(std::hypot(aDiff.getY(), aDiff.getZ()));
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