60 lines
1.7 KiB
C++
60 lines
1.7 KiB
C++
/*
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* Copyright 2015-2017 Michele "King_DuckZ" Santullo
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include "one_way_conversion.hpp"
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#include "vectorwrapper/vector_ostream.hpp"
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#include "dummy_functions.hpp"
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#include "vec.hpp"
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#include <vector>
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namespace vwr {
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//if you want to go crazy you can do one way inplace casting even if
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//the wrapped type's storage is not on the stack
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template <>
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struct VectorWrapperInfo<std::vector<float>> :
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is_castable_to<Eigen::Vector3f>,
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is_castable_to<glm::vec3>
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{
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enum { dimensions = 3 };
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typedef float scalar_type;
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typedef std::vector<float> vector_type;
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static scalar_type& get_at (size_type parIndex, vector_type& parVector) {
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if (parVector.empty())
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parVector.resize(3);
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return parVector[parIndex];
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}
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};
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} //namespace vwr
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namespace {
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using vvec3 = vwr::Vec<std::vector<float>>;
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} //unnamed namespace
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void one_way_conversion() {
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vvec3 heap_vector(10.0f, 11.0f, 12.0f);
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std::cout << "wrapped std::vector<float> = " << heap_vector << '\n';
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//casting to glm and eigen is possible since we explicitly allowed it
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auto& eigen_ref = heap_vector.cast<evec3>();
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//...but the other way around won't compile
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//vvec3& not_working = eigen_ref.cast<vvec3>();
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print_eigen_vector3(eigen_ref.data());
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}
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