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/*
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This file is part of Magnum.
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Copyright © 2010, 2011, 2012, 2013 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 "MeshData2D.h"
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Trade: got rid of Point2D/3D in MeshData in favor of Vector2/Vector3.
Positions were originally done using Point2D/3D to simplify their
transformation using matrices and to some extent simplify their usage in
shaders. But now the disadvantages exceeded the advantages:
* They take 50% more for 2D positions and 33% more for 3D positions, as
last coordinate is always equal to 1, on the other hand when last
coordinate is errorneously not equal to 1 they have crazy behavior.
* Normalizing them or transforming them with anything else than with
matrices is PITA, as we need to strip the last component, do the
transformation, and then add the component back.
* All transformation handling classes (Complex, DualComplex,
Quaternion, DualQuaternion, Matrix3, Matrix4) now have convenience
functions for transforming points specified directly as
Vector2/Vector3 (and also for transforming vectors).
* When someone wants to use homogeneous coordinates with crazy last
component values, they can do so with plain Vector3 for 2D and
Vector4 for 3D and it will be less confusing than using Point2D/3D
which no important detail hidden.
13 years ago
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#include "Math/Vector2.h"
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namespace Magnum { namespace Trade {
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MeshData2D::MeshData2D(MeshPrimitive primitive, std::vector<UnsignedInt> indices, std::vector<std::vector<Vector2>> positions, std::vector<std::vector<Vector2>> textureCoords2D): _primitive(primitive), _indices(std::move(indices)), _positions(std::move(positions)), _textureCoords2D(std::move(textureCoords2D)) {
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CORRADE_ASSERT(!_positions.empty(), "Trade::MeshData2D: no position array specified", );
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}
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MeshData2D::MeshData2D(MeshData2D&&) = default;
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MeshData2D::~MeshData2D() = default;
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MeshData2D& MeshData2D::operator=(MeshData2D&&) = default;
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std::vector<UnsignedInt>& MeshData2D::indices() {
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CORRADE_ASSERT(isIndexed(), "Trade::MeshData2D::indices(): the mesh is not indexed", _indices);
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return _indices;
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}
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const std::vector<UnsignedInt>& MeshData2D::indices() const {
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CORRADE_ASSERT(isIndexed(), "Trade::MeshData2D::indices(): the mesh is not indexed", _indices);
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return _indices;
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}
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std::vector<Vector2>& MeshData2D::positions(const UnsignedInt id) {
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CORRADE_ASSERT(id < positionArrayCount(), "Trade::MeshData2D::positions(): index out of range", _positions[id]);
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return _positions[id];
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}
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const std::vector<Vector2>& MeshData2D::positions(const UnsignedInt id) const {
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CORRADE_ASSERT(id < positionArrayCount(), "Trade::MeshData2D::positions(): index out of range", _positions[id]);
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return _positions[id];
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}
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std::vector<Vector2>& MeshData2D::textureCoords2D(const UnsignedInt id) {
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CORRADE_ASSERT(id < textureCoords2DArrayCount(), "Trade::MeshData2D::textureCoords2D(): index out of range", _textureCoords2D[id]);
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return _textureCoords2D[id];
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}
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const std::vector<Vector2>& MeshData2D::textureCoords2D(const UnsignedInt id) const {
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CORRADE_ASSERT(id < textureCoords2DArrayCount(), "Trade::MeshData2D::textureCoords2D(): index out of range", _textureCoords2D[id]);
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return _textureCoords2D[id];
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}
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}}
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