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68 lines
2.7 KiB
68 lines
2.7 KiB
3 years ago
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/*
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This file is part of Magnum.
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Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019,
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2020, 2021, 2022, 2023 Vladimír Vondruš <mosra@centrum.cz>
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Permission is hereby granted, free of charge, to any person obtaining a
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copy of this software and associated documentation files (the "Software"),
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to deal in the Software without restriction, including without limitation
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the rights to use, copy, modify, merge, publish, distribute, sublicense,
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and/or sell copies of the Software, and to permit persons to whom the
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Software is furnished to do so, subject to the following conditions:
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The above copyright notice and this permission notice shall be included
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in all copies or substantial portions of the Software.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
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FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#include <Corrade/Containers/Array.h>
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#include <Corrade/Containers/StridedArrayView.h>
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#include <Corrade/Utility/Algorithms.h>
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#include "Magnum/Image.h"
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#include "Magnum/ImageView.h"
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#include "Magnum/PixelFormat.h"
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#include "Magnum/Math/Color.h"
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#include "Magnum/Math/FunctionsBatch.h"
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#include "Magnum/TextureTools/Atlas.h"
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#define DOXYGEN_ELLIPSIS(...) __VA_ARGS__
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using namespace Magnum;
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int main() {
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{
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/* [atlasArrayPowerOfTwo] */
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Containers::ArrayView<const ImageView2D> input;
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Containers::StridedArrayView1D<const Vector2i> sizes =
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stridedArrayView(input).slice(&ImageView2D::size);
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Containers::Array<Vector3i> offsets{NoInit, input.size()};
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/* Size the atlas based on the largest image and fill it */
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Vector2i layerSize = Math::max(sizes);
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Int layerCount = TextureTools::atlasArrayPowerOfTwo(layerSize, sizes, offsets);
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/* Copy the image data to the atlas, assuming all are RGBA8Unorm as well */
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Vector3i outputSize{layerSize, layerCount};
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Image3D output{PixelFormat::RGBA8Unorm, outputSize,
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Containers::Array<char>{ValueInit, std::size_t(outputSize.product())}};
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Containers::StridedArrayView3D<Color4ub> dst = output.pixels<Color4ub>();
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for(std::size_t i = 0; i != input.size(); ++i) {
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Containers::StridedArrayView3D<const Color4ub> src = input[i].pixels<Color4ub>();
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Utility::copy(src, dst.sliceSize(
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{std::size_t(offsets[i].z()),
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std::size_t(offsets[i].y()),
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std::size_t(offsets[i].x())}, src.size()));
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}
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/* [atlasArrayPowerOfTwo] */
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}
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}
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