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/***************************************************************************
* Copyright (c) 2023 Werner Mayer <wmayer[at]users.sourceforge.net> *
* *
* This file is part of FreeCAD. *
* *
* FreeCAD is free software: you can redistribute it and/or modify it *
* under the terms of the GNU Lesser General Public License as *
* published by the Free Software Foundation, either version 2.1 of the *
* License, or (at your option) any later version. *
* *
* FreeCAD 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 *
* Lesser General Public License for more details. *
* *
* You should have received a copy of the GNU Lesser General Public *
* License along with FreeCAD. If not, see *
* <https://www.gnu.org/licenses/>. *
* *
**************************************************************************/
#include "Camera.h"
#include "Utilities.h"
using namespace Gui;
SbRotation Camera::top()
{
return {0, 0, 0, 1};
}
SbRotation Camera::bottom()
{
return {1, 0, 0, 0};
}
SbRotation Camera::front()
{
auto root = sqrtf(2.0) / 2.0f;
return {root, 0, 0, root};
}
SbRotation Camera::rear()
{
auto root = sqrtf(2.0) / 2.0f;
return {0, root, root, 0};
}
SbRotation Camera::right()
{
return {0.5, 0.5, 0.5, 0.5};
}
SbRotation Camera::left()
{
return {-0.5, 0.5, 0.5, -0.5};
}
SbRotation Camera::isometric()
{
// The values here are precalculated as our quaternion implementation
// does not support calculating the values in compile time.
// The values are verified with unit tests.
return {0.424708F, 0.17592F, 0.339851F, 0.820473F};
}
SbRotation Camera::dimetric()
{
// The values here are precalculated as our quaternion implementation
// does not support calculating the values in compile time.
// The values are verified with unit tests.
// While there are multiple ways to calculate the dimetric rotation,
// we use one which is similar to other CAD applications.
return {0.567952F, 0.103751F, 0.146726F, 0.803205F};
}
SbRotation Camera::trimetric()
{
// The values here are precalculated as our quaternion implementation
// does not support calculating the values in compile time.
// The values are verified with unit tests.
// While there are multiple ways to calculate the trimetric rotation,
// we use one which is similar to other CAD applications.
return {0.446015F, 0.119509F, 0.229575F, 0.856787F};
}
SbRotation Camera::rotation(Camera::Orientation view)
{
switch (view) {
case Top:
return top();
case Bottom:
return bottom();
case Front:
return front();
case Rear:
return rear();
case Right:
return right();
case Left:
return left();
case Isometric:
return isometric();
case Dimetric:
return dimetric();
case Trimetric:
return trimetric();
default:
return top();
}
}
Base::Rotation Camera::convert(Camera::Orientation view)
{
return convert(Camera::rotation(view));
}
Base::Rotation Camera::convert(const SbRotation& rot)
{
return Base::convertTo<Base::Rotation>(rot);
}
SbRotation Camera::convert(const Base::Rotation& rot)
{
return Base::convertTo<SbRotation>(rot);
}
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