mirror of https://github.com/mosra/magnum.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
145 lines
6.1 KiB
145 lines
6.1 KiB
/* |
|
This file is part of Magnum. |
|
|
|
Copyright © 2010, 2011, 2012, 2013, 2014, 2015, 2016, 2017, 2018, 2019, |
|
2020, 2021, 2022, 2023 Vladimír Vondruš <mosra@centrum.cz> |
|
|
|
Permission is hereby granted, free of charge, to any person obtaining a |
|
copy of this software and associated documentation files (the "Software"), |
|
to deal in the Software without restriction, including without limitation |
|
the rights to use, copy, modify, merge, publish, distribute, sublicense, |
|
and/or sell copies of the Software, and to permit persons to whom the |
|
Software is furnished to do so, subject to the following conditions: |
|
|
|
The above copyright notice and this permission notice shall be included |
|
in all copies or substantial portions of the Software. |
|
|
|
THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
|
IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
|
FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
|
THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER |
|
LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING |
|
FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER |
|
DEALINGS IN THE SOFTWARE. |
|
*/ |
|
|
|
#include <Corrade/Containers/Array.h> |
|
#include <Corrade/Containers/BitArray.h> |
|
#include <Corrade/Containers/BitArrayView.h> |
|
#include <Corrade/Containers/StridedArrayView.h> |
|
#include <Corrade/Utility/Algorithms.h> |
|
|
|
#include "Magnum/Image.h" |
|
#include "Magnum/ImageView.h" |
|
#include "Magnum/PixelFormat.h" |
|
#include "Magnum/Math/Color.h" |
|
#include "Magnum/Math/FunctionsBatch.h" |
|
#include "Magnum/TextureTools/Atlas.h" |
|
|
|
#define DOXYGEN_ELLIPSIS(...) __VA_ARGS__ |
|
|
|
using namespace Magnum; |
|
|
|
int main() { |
|
{ |
|
/* [AtlasLandfill-usage] */ |
|
Containers::ArrayView<const ImageView2D> images = DOXYGEN_ELLIPSIS({}); |
|
Containers::Array<Vector2i> offsets{NoInit, images.size()}; |
|
Containers::BitArray rotations{NoInit, images.size()}; |
|
|
|
/* Fill the atlas with an unbounded height */ |
|
TextureTools::AtlasLandfill atlas{{1024, 0}}; |
|
atlas.add(stridedArrayView(images).slice(&ImageView2D::size), offsets, rotations); |
|
|
|
/* Copy the image data to the atlas, assuming all are RGBA8Unorm as well */ |
|
Image2D output{PixelFormat::RGBA8Unorm, atlas.filledSize().xy(), |
|
Containers::Array<char>{ValueInit, std::size_t(atlas.filledSize().product())}}; |
|
Containers::StridedArrayView2D<Color4ub> dst = output.pixels<Color4ub>(); |
|
for(std::size_t i = 0; i != images.size(); ++i) { |
|
/* Rotate 90° counterclockwise if the image is rotated in the atlas */ |
|
Containers::StridedArrayView2D<const Color4ub> src = rotations[i] ? |
|
images[i].pixels<Color4ub>().flipped<1>().transposed<0, 1>() : |
|
images[i].pixels<Color4ub>(); |
|
Utility::copy(src, dst.sliceSize( |
|
{std::size_t(offsets[i].y()), |
|
std::size_t(offsets[i].x())}, src.size())); |
|
} |
|
/* [AtlasLandfill-usage] */ |
|
} |
|
|
|
{ |
|
Containers::ArrayView<const ImageView2D> images; |
|
Containers::Array<Vector2i> offsets{NoInit, images.size()}; |
|
TextureTools::AtlasLandfill atlas{{1024, 0}}; |
|
/* [AtlasLandfill-usage-no-rotation] */ |
|
atlas.clearFlags(TextureTools::AtlasLandfillFlag::RotatePortrait| |
|
TextureTools::AtlasLandfillFlag::RotateLandscape) |
|
.add(stridedArrayView(images).slice(&ImageView2D::size), offsets); |
|
|
|
/* Copy the image data to the atlas, assuming all are RGBA8Unorm as well */ |
|
Image2D output{PixelFormat::RGBA8Unorm, atlas.filledSize().xy(), |
|
Containers::Array<char>{ValueInit, std::size_t(atlas.filledSize().product())}}; |
|
Containers::StridedArrayView2D<Color4ub> dst = output.pixels<Color4ub>(); |
|
for(std::size_t i = 0; i != images.size(); ++i) { |
|
Containers::StridedArrayView2D<const Color4ub> src = images[i].pixels<Color4ub>(); |
|
Utility::copy(src, dst.sliceSize( |
|
{std::size_t(offsets[i].y()), |
|
std::size_t(offsets[i].x())}, src.size())); |
|
} |
|
/* [AtlasLandfill-usage-no-rotation] */ |
|
} |
|
|
|
{ |
|
/* [AtlasLandfill-usage-array] */ |
|
Containers::ArrayView<const ImageView2D> images = DOXYGEN_ELLIPSIS({}); |
|
Containers::Array<Vector3i> offsets{NoInit, images.size()}; |
|
Containers::BitArray rotations{NoInit, images.size()}; |
|
|
|
/* Fill the atlas with an unbounded depth */ |
|
TextureTools::AtlasLandfill atlas{{1024, 1024, 0}}; |
|
atlas.add(stridedArrayView(images).slice(&ImageView2D::size), offsets, rotations); |
|
|
|
/* Copy the image data to the atlas, assuming all are RGBA8Unorm as well */ |
|
Vector3i outputSize = atlas.filledSize(); |
|
Image3D output{PixelFormat::RGBA8Unorm, outputSize, |
|
Containers::Array<char>{ValueInit, std::size_t(outputSize.product())}}; |
|
Containers::StridedArrayView3D<Color4ub> dst = output.pixels<Color4ub>(); |
|
for(std::size_t i = 0; i != images.size(); ++i) { |
|
/* Rotate 90° counterclockwise if the image is rotated in the atlas */ |
|
Containers::StridedArrayView3D<const Color4ub> src = rotations[i] ? |
|
images[i].pixels<Color4ub>().flipped<1>().transposed<0, 1>() : |
|
images[i].pixels<Color4ub>(); |
|
Utility::copy(src, dst.sliceSize( |
|
{std::size_t(offsets[i].z()), |
|
std::size_t(offsets[i].y()), |
|
std::size_t(offsets[i].x())}, src.size())); |
|
} |
|
/* [AtlasLandfill-usage-array] */ |
|
} |
|
|
|
{ |
|
/* [atlasArrayPowerOfTwo] */ |
|
Containers::ArrayView<const ImageView2D> input; |
|
Containers::StridedArrayView1D<const Vector2i> sizes = |
|
stridedArrayView(input).slice(&ImageView2D::size); |
|
Containers::Array<Vector3i> offsets{NoInit, input.size()}; |
|
|
|
/* Size the atlas based on the largest image and fill it */ |
|
Vector2i layerSize = Math::max(sizes); |
|
Int layerCount = TextureTools::atlasArrayPowerOfTwo(layerSize, sizes, offsets); |
|
|
|
/* Copy the image data to the atlas, assuming all are RGBA8Unorm as well */ |
|
Vector3i outputSize{layerSize, layerCount}; |
|
Image3D output{PixelFormat::RGBA8Unorm, outputSize, |
|
Containers::Array<char>{ValueInit, std::size_t(outputSize.product())}}; |
|
Containers::StridedArrayView3D<Color4ub> dst = output.pixels<Color4ub>(); |
|
for(std::size_t i = 0; i != input.size(); ++i) { |
|
Containers::StridedArrayView3D<const Color4ub> src = input[i].pixels<Color4ub>(); |
|
Utility::copy(src, dst.sliceSize( |
|
{std::size_t(offsets[i].z()), |
|
std::size_t(offsets[i].y()), |
|
std::size_t(offsets[i].x())}, src.size())); |
|
} |
|
/* [atlasArrayPowerOfTwo] */ |
|
} |
|
}
|
|
|