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c70056491d
This cleans up the example code. Now all of the examples use the "namespace compute = boost::compute" alias. This shortens the example code making it less verbose and more clear. Also cleans up a few style issues.
57 lines
1.6 KiB
C++
57 lines
1.6 KiB
C++
//---------------------------------------------------------------------------//
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// Copyright (c) 2013 Kyle Lutz <kyle.r.lutz@gmail.com>
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//
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// Distributed under the Boost Software License, Version 1.0
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// See accompanying file LICENSE_1_0.txt or copy at
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// http://www.boost.org/LICENSE_1_0.txt
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//
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// See http://kylelutz.github.com/compute for more information.
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//---------------------------------------------------------------------------//
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//[point_centroid_example
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#include <iostream>
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#include <boost/compute.hpp>
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namespace compute = boost::compute;
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// the point centroid example calculates and displays the
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// centroid of a set of 3D points stored as float4's
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int main()
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{
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using compute::float4_;
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// point coordinates
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float points[] = { 1.0f, 2.0f, 3.0f, 0.0f,
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-2.0f, -3.0f, 4.0f, 0.0f,
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1.0f, -2.0f, 2.5f, 0.0f,
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-7.0f, -3.0f, -2.0f, 0.0f,
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3.0f, 4.0f, -5.0f, 0.0f };
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// create vector for five points
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compute::vector<float4_> vector(5);
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// copy point data to the device
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compute::copy(
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reinterpret_cast<float4_ *>(points),
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reinterpret_cast<float4_ *>(points) + 5,
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vector.begin()
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);
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// calculate sum
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float4_ sum = compute::accumulate(vector.begin(),
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vector.end(),
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float4_(0, 0, 0, 0));
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// calculate centroid
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float4_ centroid;
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for(size_t i = 0; i < 3; i++){
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centroid[i] = sum[i] / 5.0f;
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}
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// print centroid
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std::cout << "centroid: " << centroid << std::endl;
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}
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//]
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