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magnum/src/Magnum/MeshTools/Transform.cpp

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/*
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 "Transform.h"
#include <Corrade/Containers/Optional.h>
#include "Magnum/MeshTools/Filter.h"
#include "Magnum/MeshTools/Interleave.h"
#include "Magnum/Trade/MeshData.h"
namespace Magnum { namespace MeshTools {
Trade::MeshData transform2D(const Trade::MeshData& mesh, const Matrix3& transformation, const UnsignedInt id, const Int morphTargetId, const InterleaveFlags flags) {
const Containers::Optional<UnsignedInt> positionAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Position, id, morphTargetId);
#ifndef CORRADE_NO_ASSERT
if(morphTargetId == -1) CORRADE_ASSERT(positionAttributeId,
"MeshTools::transform2D(): the mesh has no positions with index" << id,
(Trade::MeshData{MeshPrimitive::Triangles, 0}));
else CORRADE_ASSERT(positionAttributeId,
"MeshTools::transform2D(): the mesh has no positions with index" << id << "in morph target" << morphTargetId,
(Trade::MeshData{MeshPrimitive::Triangles, 0}));
#endif
const VertexFormat positionAttributeFormat = mesh.attributeFormat(*positionAttributeId);
CORRADE_ASSERT(!isVertexFormatImplementationSpecific(positionAttributeFormat),
"MeshTools::transform2D(): positions have an implementation-specific format" << reinterpret_cast<void*>(vertexFormatUnwrap(positionAttributeFormat)),
(Trade::MeshData{MeshPrimitive::Points, 0}));
CORRADE_ASSERT(vertexFormatComponentCount(positionAttributeFormat) == 2,
"MeshTools::transform2D(): expected 2D positions but got" << positionAttributeFormat,
(Trade::MeshData{MeshPrimitive::Triangles, 0}));
/* Copy original attributes to a mutable array so we can update the
position attribute format, if needed. Not using Utility::copy() here as
the view returned by attributeData() might have offset-only attributes
which interleave() doesn't want. */
Containers::Array<Trade::MeshAttributeData> attributes{mesh.attributeCount()};
for(UnsignedInt i = 0; i != mesh.attributeCount(); ++i)
attributes[i] = mesh.attributeData(i);
/* If the position attribute isn't in a desired format, replace it with an
empty placeholder that we'll unpack the data into */
if(positionAttributeFormat != VertexFormat::Vector2)
attributes[*positionAttributeId] = Trade::MeshAttributeData{Trade::MeshAttribute::Position, VertexFormat::Vector2, nullptr, 0, morphTargetId};
/* Create the output mesh, making more room for the full formats if
necessary */
/** @todo isn't there some less silly way to take just the indices from the
mesh?! */
Trade::MeshData out = interleave(filterOnlyAttributes(mesh, Containers::ArrayView<const Trade::MeshAttribute>{}), attributes, flags);
/* If the position attribute wasn't in a desired format, unpack it */
if(positionAttributeFormat != VertexFormat::Vector2)
mesh.positions2DInto(out.mutableAttribute<Vector2>(*positionAttributeId), id, morphTargetId);
/* Delegate to the in-place implementation and return */
transform2DInPlace(out, transformation, id, morphTargetId);
return out;
}
#ifdef MAGNUM_BUILD_DEPRECATED
Trade::MeshData transform2D(const Trade::MeshData& mesh, const Matrix3& transformation, const UnsignedInt id, const InterleaveFlags flags) {
return transform2D(mesh, transformation, id, -1, flags);
}
#endif
Trade::MeshData transform2D(Trade::MeshData&& mesh, const Matrix3& transformation, const UnsignedInt id, const Int morphTargetId, const InterleaveFlags flags) {
/* Perform the operation in-place, if we can transfer the ownership and
have positions in the right format already. Explicitly checking for
presence of the position attribute so we don't need to duplicate the
assert here again. */
const Containers::Optional<UnsignedInt> positionAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Position, id, morphTargetId);
if((mesh.indexDataFlags() & Trade::DataFlag::Owned) &&
(mesh.vertexDataFlags() & Trade::DataFlag::Owned) &&
positionAttributeId && mesh.attributeFormat(*positionAttributeId) == VertexFormat::Vector2
) {
transform2DInPlace(mesh, transformation, id, morphTargetId);
return Utility::move(mesh);
}
/* Otherwise delegate to the function that does all the copying and format
expansion */
return transform2D(mesh, transformation, id, morphTargetId, flags);
}
#ifdef MAGNUM_BUILD_DEPRECATED
Trade::MeshData transform2D(Trade::MeshData&& mesh, const Matrix3& transformation, const UnsignedInt id, const InterleaveFlags flags) {
return transform2D(Utility::move(mesh), transformation, id, -1, flags);
}
#endif
void transform2DInPlace(Trade::MeshData& mesh, const Matrix3& transformation, const UnsignedInt id, const Int morphTargetId) {
CORRADE_ASSERT(mesh.vertexDataFlags() & Trade::DataFlag::Mutable,
"MeshTools::transform2DInPlace(): vertex data not mutable", );
const Containers::Optional<UnsignedInt> positionAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Position, id, morphTargetId);
#ifndef CORRADE_NO_ASSERT
if(morphTargetId == -1) CORRADE_ASSERT(positionAttributeId,
"MeshTools::transform2DInPlace(): the mesh has no positions with index" << id, );
else CORRADE_ASSERT(positionAttributeId,
"MeshTools::transform2DInPlace(): the mesh has no positions with index" << id << "in morph target" << morphTargetId, );
#endif
CORRADE_ASSERT(mesh.attributeFormat(*positionAttributeId) == VertexFormat::Vector2,
"MeshTools::transform2DInPlace(): expected" << VertexFormat::Vector2 << "positions but got" << mesh.attributeFormat(*positionAttributeId), );
/** @todo this needs a proper batch implementation */
for(Vector2& position: mesh.mutableAttribute<Vector2>(*positionAttributeId))
position = transformation.transformPoint(position);
}
Trade::MeshData transform3D(const Trade::MeshData& mesh, const Matrix4& transformation, const UnsignedInt id, const Int morphTargetId, const InterleaveFlags flags) {
const Containers::Optional<UnsignedInt> positionAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Position, id, morphTargetId);
#ifndef CORRADE_NO_ASSERT
if(morphTargetId == -1) CORRADE_ASSERT(positionAttributeId,
"MeshTools::transform3D(): the mesh has no positions with index" << id,
(Trade::MeshData{MeshPrimitive::Triangles, 0}));
else CORRADE_ASSERT(positionAttributeId,
"MeshTools::transform3D(): the mesh has no positions with index" << id << "in morph target" << morphTargetId,
(Trade::MeshData{MeshPrimitive::Triangles, 0}));
#endif
const VertexFormat positionAttributeFormat = mesh.attributeFormat(*positionAttributeId);
CORRADE_ASSERT(!isVertexFormatImplementationSpecific(positionAttributeFormat),
"MeshTools::transform3D(): positions have an implementation-specific format" << reinterpret_cast<void*>(vertexFormatUnwrap(positionAttributeFormat)),
(Trade::MeshData{MeshPrimitive::Points, 0}));
CORRADE_ASSERT(vertexFormatComponentCount(positionAttributeFormat) == 3,
"MeshTools::transform3D(): expected 3D positions but got" << positionAttributeFormat,
(Trade::MeshData{MeshPrimitive::Triangles, 0}));
const Containers::Optional<UnsignedInt> tangentAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Tangent, id, morphTargetId);
const Containers::Optional<UnsignedInt> bitangentAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Bitangent, id, morphTargetId);
const Containers::Optional<UnsignedInt> normalAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Normal, id, morphTargetId);
/* Copy original attributes to a mutable array so we can update the
position attribute format, if needed. Not using Utility::copy() here as
the view returned by attributeData() might have offset-only attributes
which interleave() doesn't want. */
Containers::Array<Trade::MeshAttributeData> attributes{mesh.attributeCount()};
for(UnsignedInt i = 0; i != mesh.attributeCount(); ++i)
attributes[i] = mesh.attributeData(i);
/* If the position/TBN attributes aren't in a desired format, replace them
with an empty placeholder that we'll unpack the data into */
if(positionAttributeFormat != VertexFormat::Vector3)
attributes[*positionAttributeId] = Trade::MeshAttributeData{Trade::MeshAttribute::Position, VertexFormat::Vector3, nullptr, 0, morphTargetId};
VertexFormat tangentAttributeFormat{};
VertexFormat desiredTangentVertexFormat{};
if(tangentAttributeId) {
tangentAttributeFormat = mesh.attributeFormat(*tangentAttributeId);
CORRADE_ASSERT(!isVertexFormatImplementationSpecific(tangentAttributeFormat),
"MeshTools::transform3D(): tangents have an implementation-specific format" << reinterpret_cast<void*>(vertexFormatUnwrap(tangentAttributeFormat)),
(Trade::MeshData{MeshPrimitive::Points, 0}));
desiredTangentVertexFormat = vertexFormatComponentCount(mesh.attributeFormat(*tangentAttributeId)) == 4 ?
VertexFormat::Vector4 : VertexFormat::Vector3;
if(tangentAttributeFormat != desiredTangentVertexFormat)
attributes[*tangentAttributeId] = Trade::MeshAttributeData{Trade::MeshAttribute::Tangent, desiredTangentVertexFormat, nullptr, 0, morphTargetId};
}
VertexFormat bitangentAttributeFormat{};
if(bitangentAttributeId) {
bitangentAttributeFormat = mesh.attributeFormat(*bitangentAttributeId);
CORRADE_ASSERT(!isVertexFormatImplementationSpecific(bitangentAttributeFormat),
"MeshTools::transform3D(): bitangents have an implementation-specific format" << reinterpret_cast<void*>(vertexFormatUnwrap(bitangentAttributeFormat)),
(Trade::MeshData{MeshPrimitive::Points, 0}));
if(bitangentAttributeFormat != VertexFormat::Vector3)
attributes[*bitangentAttributeId] = Trade::MeshAttributeData{Trade::MeshAttribute::Bitangent, VertexFormat::Vector3, nullptr, 0, morphTargetId};
}
VertexFormat normalAttributeFormat{};
if(normalAttributeId) {
normalAttributeFormat = mesh.attributeFormat(*normalAttributeId);
CORRADE_ASSERT(!isVertexFormatImplementationSpecific(normalAttributeFormat),
"MeshTools::transform3D(): normals have an implementation-specific format" << reinterpret_cast<void*>(vertexFormatUnwrap(normalAttributeFormat)),
(Trade::MeshData{MeshPrimitive::Points, 0}));
if(normalAttributeFormat != VertexFormat::Vector3)
attributes[*normalAttributeId] = Trade::MeshAttributeData{Trade::MeshAttribute::Normal, VertexFormat::Vector3, nullptr, 0, morphTargetId};
}
/* Create the output mesh, making more room for the full formats if
necessary */
/** @todo isn't there some less silly way to take just the indices from the
mesh?! */
Trade::MeshData out = interleave(filterOnlyAttributes(mesh, Containers::ArrayView<const Trade::MeshAttribute>{}), attributes, flags);
/* If the position/TBN attributes weren't in a desired format, unpack them */
if(positionAttributeFormat != VertexFormat::Vector3)
mesh.positions3DInto(out.mutableAttribute<Vector3>(*positionAttributeId), id, morphTargetId);
if(tangentAttributeId && tangentAttributeFormat != desiredTangentVertexFormat) {
if(desiredTangentVertexFormat == VertexFormat::Vector4) {
mesh.tangentsInto(out.mutableAttribute<Vector4>(*tangentAttributeId).slice(&Vector4::xyz), id, morphTargetId);
mesh.bitangentSignsInto(out.mutableAttribute<Vector4>(*tangentAttributeId).slice(&Vector4::w), id, morphTargetId);
} else {
mesh.tangentsInto(out.mutableAttribute<Vector3>(*tangentAttributeId), id, morphTargetId);
}
}
if(bitangentAttributeId && bitangentAttributeFormat != VertexFormat::Vector3)
mesh.bitangentsInto(out.mutableAttribute<Vector3>(*bitangentAttributeId), id, morphTargetId);
if(normalAttributeId && normalAttributeFormat != VertexFormat::Vector3)
mesh.normalsInto(out.mutableAttribute<Vector3>(*normalAttributeId), id, morphTargetId);
/* Delegate to the in-place implementation and return */
transform3DInPlace(out, transformation, id, morphTargetId);
return out;
}
#ifdef MAGNUM_BUILD_DEPRECATED
Trade::MeshData transform3D(const Trade::MeshData& mesh, const Matrix4& transformation, const UnsignedInt id, const InterleaveFlags flags) {
return transform3D(mesh, transformation, id, -1, flags);
}
#endif
Trade::MeshData transform3D(Trade::MeshData&& mesh, const Matrix4& transformation, const UnsignedInt id, const Int morphTargetId, const InterleaveFlags flags) {
/* Perform the operation in-place, if we can transfer the ownership and
have positions in the right format already. Explicitly checking for
presence of the position attribute so we don't need to duplicate the
assert here again. */
const Containers::Optional<UnsignedInt> positionAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Position, id, morphTargetId);
const Containers::Optional<UnsignedInt> tangentAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Tangent, id, morphTargetId);
const Containers::Optional<UnsignedInt> bitangentAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Bitangent, id, morphTargetId);
const Containers::Optional<UnsignedInt> normalAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Normal, id, morphTargetId);
if((mesh.indexDataFlags() & Trade::DataFlag::Owned) &&
(mesh.vertexDataFlags() & Trade::DataFlag::Owned) &&
positionAttributeId && mesh.attributeFormat(*positionAttributeId) == VertexFormat::Vector3 &&
(!tangentAttributeId || mesh.attributeFormat(*tangentAttributeId) == VertexFormat::Vector3 || mesh.attributeFormat(*tangentAttributeId) == VertexFormat::Vector4) &&
(!bitangentAttributeId || mesh.attributeFormat(*bitangentAttributeId) == VertexFormat::Vector3) &&
(!normalAttributeId || mesh.attributeFormat(*normalAttributeId) == VertexFormat::Vector3)
) {
transform3DInPlace(mesh, transformation, id, morphTargetId);
return Utility::move(mesh);
}
/* Otherwise delegate to the function that does all the copying and format
expansion */
return transform3D(mesh, transformation, id, morphTargetId, flags);
}
#ifdef MAGNUM_BUILD_DEPRECATED
Trade::MeshData transform3D(Trade::MeshData&& mesh, const Matrix4& transformation, const UnsignedInt id, const InterleaveFlags flags) {
return transform3D(Utility::move(mesh), transformation, id, -1, flags);
}
#endif
void transform3DInPlace(Trade::MeshData& mesh, const Matrix4& transformation, const UnsignedInt id, const Int morphTargetId) {
CORRADE_ASSERT(mesh.vertexDataFlags() & Trade::DataFlag::Mutable,
"MeshTools::transform3DInPlace(): vertex data not mutable", );
const Containers::Optional<UnsignedInt> positionAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Position, id, morphTargetId);
#ifndef CORRADE_NO_ASSERT
if(morphTargetId == -1) CORRADE_ASSERT(positionAttributeId,
"MeshTools::transform3DInPlace(): the mesh has no positions with index" << id, );
else CORRADE_ASSERT(positionAttributeId,
"MeshTools::transform3DInPlace(): the mesh has no positions with index" << id << "in morph target" << morphTargetId, );
#endif
CORRADE_ASSERT(mesh.attributeFormat(*positionAttributeId) == VertexFormat::Vector3,
"MeshTools::transform3DInPlace(): expected" << VertexFormat::Vector3 << "positions but got" << mesh.attributeFormat(*positionAttributeId), );
const Containers::Optional<UnsignedInt> tangentAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Tangent, id, morphTargetId);
const VertexFormat tangentAttributeFormat = tangentAttributeId ? mesh.attributeFormat(*tangentAttributeId) : VertexFormat{};
CORRADE_ASSERT(!tangentAttributeId || tangentAttributeFormat == VertexFormat::Vector3 || tangentAttributeFormat == VertexFormat::Vector4,
"MeshTools::transform3DInPlace(): expected" << VertexFormat::Vector3 << "or" << VertexFormat::Vector4 << "tangents but got" << mesh.attributeFormat(*tangentAttributeId), );
const Containers::Optional<UnsignedInt> bitangentAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Bitangent, id, morphTargetId);
CORRADE_ASSERT(!bitangentAttributeId || mesh.attributeFormat(*bitangentAttributeId) == VertexFormat::Vector3,
"MeshTools::transform3DInPlace(): expected" << VertexFormat::Vector3 << "bitangents but got" << mesh.attributeFormat(*bitangentAttributeId), );
const Containers::Optional<UnsignedInt> normalAttributeId = mesh.findAttributeId(Trade::MeshAttribute::Normal, id, morphTargetId);
CORRADE_ASSERT(!normalAttributeId || mesh.attributeFormat(*normalAttributeId) == VertexFormat::Vector3,
"MeshTools::transform3DInPlace(): expected" << VertexFormat::Vector3 << "normals but got" << mesh.attributeFormat(*normalAttributeId), );
/** @todo this needs a proper batch implementation */
for(Vector3& position: mesh.mutableAttribute<Vector3>(*positionAttributeId))
position = transformation.transformPoint(position);
/* If no other attributes are present, nothing to do */
if(!tangentAttributeId && !bitangentAttributeId && !normalAttributeId)
return;
const Matrix3x3 normalMatrix = transformation.normalMatrix();
if(tangentAttributeId) {
/** @todo this needs a proper batch implementation */
if(tangentAttributeFormat == VertexFormat::Vector3)
for(Vector3& tangent: mesh.mutableAttribute<Vector3>(*tangentAttributeId))
tangent = normalMatrix*tangent;
else for(Vector4& tangent: mesh.mutableAttribute<Vector4>(*tangentAttributeId)) {
tangent.xyz() = normalMatrix*tangent.xyz();
/** @todo figure out the fourth component, probably has to get
flipped when the scale changes handedness? */
}
}
/** @todo this needs a proper batch implementation */
if(bitangentAttributeId) for(Vector3& bitangent: mesh.mutableAttribute<Vector3>(*bitangentAttributeId))
bitangent = normalMatrix*bitangent;
/** @todo this needs a proper batch implementation */
if(normalAttributeId) for(Vector3& normal: mesh.mutableAttribute<Vector3>(*normalAttributeId))
normal = normalMatrix*normal;
}
Trade::MeshData transformTextureCoordinates2D(const Trade::MeshData& mesh, const Matrix3& transformation, const UnsignedInt id, const Int morphTargetId, const InterleaveFlags flags) {
const Containers::Optional<UnsignedInt> textureCoordinateAttributeId = mesh.findAttributeId(Trade::MeshAttribute::TextureCoordinates, id, morphTargetId);
#ifndef CORRADE_NO_ASSERT
if(morphTargetId == -1) CORRADE_ASSERT(textureCoordinateAttributeId,
"MeshTools::transformTextureCoordinates2D(): the mesh has no texture coordinates with index" << id,
(Trade::MeshData{MeshPrimitive::Triangles, 0}));
else CORRADE_ASSERT(textureCoordinateAttributeId,
"MeshTools::transformTextureCoordinates2D(): the mesh has no texture coordinates with index" << id << "in morph target" << morphTargetId,
(Trade::MeshData{MeshPrimitive::Triangles, 0}));
#endif
const VertexFormat textureCoordinateAttributeFormat = mesh.attributeFormat(*textureCoordinateAttributeId);
CORRADE_ASSERT(!isVertexFormatImplementationSpecific(textureCoordinateAttributeFormat),
"MeshTools::transformTextureCoordinates2D(): texture coordinates have an implementation-specific format" << reinterpret_cast<void*>(vertexFormatUnwrap(textureCoordinateAttributeFormat)),
(Trade::MeshData{MeshPrimitive::Points, 0}));
/* Copy original attributes to a mutable array so we can update the
position attribute format, if needed. Not using Utility::copy() here as
the view returned by attributeData() might have offset-only attributes
which interleave() doesn't want. */
Containers::Array<Trade::MeshAttributeData> attributes{mesh.attributeCount()};
for(UnsignedInt i = 0; i != mesh.attributeCount(); ++i)
attributes[i] = mesh.attributeData(i);
/* If the position attribute isn't in a desired format, replace it with an
empty placeholder that we'll unpack the data into */
if(textureCoordinateAttributeFormat != VertexFormat::Vector2)
attributes[*textureCoordinateAttributeId] = Trade::MeshAttributeData{Trade::MeshAttribute::TextureCoordinates, VertexFormat::Vector2, nullptr, 0, morphTargetId};
/* Create the output mesh, making more room for the full formats if
necessary */
/** @todo isn't there some less silly way to take just the indices from the
mesh?! */
Trade::MeshData out = interleave(filterOnlyAttributes(mesh, Containers::ArrayView<const Trade::MeshAttribute>{}), attributes, flags);
/* If the position attribute wasn't in a desired format, unpack it */
if(mesh.attributeFormat(*textureCoordinateAttributeId) != VertexFormat::Vector2)
mesh.textureCoordinates2DInto(out.mutableAttribute<Vector2>(*textureCoordinateAttributeId), id, morphTargetId);
/* Delegate to the in-place implementation and return */
transformTextureCoordinates2DInPlace(out, transformation, id, morphTargetId);
return out;
}
#ifdef MAGNUM_BUILD_DEPRECATED
Trade::MeshData transformTextureCoordinates2D(const Trade::MeshData& mesh, const Matrix3& transformation, const UnsignedInt id, const InterleaveFlags flags) {
return transformTextureCoordinates2D(mesh, transformation, id, -1, flags);
}
#endif
Trade::MeshData transformTextureCoordinates2D(Trade::MeshData&& mesh, const Matrix3& transformation, const UnsignedInt id, const Int morphTargetId, const InterleaveFlags flags) {
/* Perform the operation in-place, if we can transfer the ownership and
have positions in the right format already. Explicitly checking for
presence of the position attribute so we don't need to duplicate the
assert here again. */
const Containers::Optional<UnsignedInt> textureCoordinateAttributeId = mesh.findAttributeId(Trade::MeshAttribute::TextureCoordinates, id, morphTargetId);
if((mesh.indexDataFlags() & Trade::DataFlag::Owned) &&
(mesh.vertexDataFlags() & Trade::DataFlag::Owned) &&
textureCoordinateAttributeId && mesh.attributeFormat(*textureCoordinateAttributeId) == VertexFormat::Vector2
) {
transformTextureCoordinates2DInPlace(mesh, transformation, id, morphTargetId);
return Utility::move(mesh);
}
/* Otherwise delegate to the function that does all the copying and format
expansion */
return transformTextureCoordinates2D(mesh, transformation, id, morphTargetId, flags);
}
#ifdef MAGNUM_BUILD_DEPRECATED
Trade::MeshData transformTextureCoordinates2D(Trade::MeshData&& mesh, const Matrix3& transformation, const UnsignedInt id, const InterleaveFlags flags) {
return transformTextureCoordinates2D(Utility::move(mesh), transformation, id, -1, flags);
}
#endif
void transformTextureCoordinates2DInPlace(Trade::MeshData& mesh, const Matrix3& transformation, const UnsignedInt id, const Int morphTargetId) {
CORRADE_ASSERT(mesh.vertexDataFlags() & Trade::DataFlag::Mutable,
"MeshTools::transformTextureCoordinates2DInPlace(): vertex data not mutable", );
const Containers::Optional<UnsignedInt> textureCoordinateAttributeId = mesh.findAttributeId(Trade::MeshAttribute::TextureCoordinates, id, morphTargetId);
#ifndef CORRADE_NO_ASSERT
if(morphTargetId == -1) CORRADE_ASSERT(textureCoordinateAttributeId,
"MeshTools::transformTextureCoordinates2DInPlace(): the mesh has no texture coordinates with index" << id, );
else CORRADE_ASSERT(textureCoordinateAttributeId,
"MeshTools::transformTextureCoordinates2DInPlace(): the mesh has no texture coordinates with index" << id << "in morph target" << morphTargetId, );
#endif
CORRADE_ASSERT(mesh.attributeFormat(*textureCoordinateAttributeId) == VertexFormat::Vector2,
"MeshTools::transformTextureCoordinates2DInPlace(): expected" << VertexFormat::Vector2 << "texture coordinates but got" << mesh.attributeFormat(*textureCoordinateAttributeId), );
/** @todo this needs a proper batch implementation */
for(Vector2& position: mesh.mutableAttribute<Vector2>(*textureCoordinateAttributeId))
position = transformation.transformPoint(position);
}
}}