diff options
Diffstat (limited to 'include/tools/helpers.hxx')
-rw-r--r-- | include/tools/helpers.hxx | 57 |
1 files changed, 57 insertions, 0 deletions
diff --git a/include/tools/helpers.hxx b/include/tools/helpers.hxx new file mode 100644 index 0000000000..05ee59960f --- /dev/null +++ b/include/tools/helpers.hxx @@ -0,0 +1,57 @@ +/* -*- 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/. + */ +#pragma once + +#include <sal/config.h> +#include <sal/types.h> +#include <tools/long.hxx> +#include <cassert> +#include <limits> +#include <type_traits> + +inline sal_uInt32 AlignedWidth4Bytes(sal_uInt32 nWidthBits) +{ + if (nWidthBits > SAL_MAX_UINT32 - 31) + nWidthBits = SAL_MAX_UINT32; + else + nWidthBits += 31; + return (nWidthBits >> 5) << 2; +} + +inline tools::Long FRound( double fVal ) +{ + return fVal > 0.0 + ? fVal == double(std::numeric_limits<tools::Long>::max()) + ? std::numeric_limits<tools::Long>::max() : static_cast<tools::Long>( fVal + 0.5 ) + : static_cast<tools::Long>( fVal - 0.5 ); +} + +//valid range: (-180,180] +template <typename T> +[[nodiscard]] inline typename std::enable_if<std::is_signed<T>::value, T>::type +NormAngle180(T angle) +{ + while (angle <= -180) + angle += 360; + while (angle > 180) + angle -= 360; + return angle; +} + +//valid range: [0,360) +template <typename T> [[nodiscard]] inline T NormAngle360(T angle) +{ + while (angle < 0) + angle += 360; + while (angle >= 360) + angle -= 360; + return angle; +} + +/* vim:set shiftwidth=4 softtabstop=4 expandtab: */ |