cpp.react/examples/src/BasicReactors.cpp at master · zengyuxing007/cpp.react · GitHub

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// Copyright Sebastian Jeckel 2014.

// Distributed under the Boost Software License, Version 1.0.

// (See accompanying file LICENSE_1_0.txt or copy at

// http://www.boost.org/LICENSE_1_0.txt)

#include <iostream>

#include <utility>

#include <vector>

#include "react/Domain.h"

#include "react/Signal.h"

#include "react/Event.h"

#include "react/Reactor.h"

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Example 1 - Creating reactive loops

///////////////////////////////////////////////////////////////////////////////////////////////////

namespace example1

{

using namespace std;

using namespace react;

REACTIVE_DOMAIN(D, sequential)

USING_REACTIVE_DOMAIN(D)

using PointT = pair<int,int>;

using PathT = vector<PointT>;

vector<PathT> paths;

EventSourceT<PointT> mouseDown = MakeEventSource<D,PointT>();

EventSourceT<PointT> mouseUp = MakeEventSource<D,PointT>();

EventSourceT<PointT> mouseMove = MakeEventSource<D,PointT>();

ReactorT loop

{

[&] (ReactorT::Context ctx)

{

PathT points;

points.emplace_back(ctx.Await(mouseDown));

ctx.RepeatUntil(mouseUp, [&] {

points.emplace_back(ctx.Await(mouseMove));

});

points.emplace_back(ctx.Await(mouseUp));

paths.push_back(points);

}

};

void Run()

{

cout << "Example 1 - Creating reactive loops" << endl;

mouseDown << PointT( 1,1 );

mouseMove << PointT( 2,2 ) << PointT( 3,3 ) << PointT( 4,4 );

mouseUp << PointT( 5,5 );

mouseMove << PointT( 999,999 );

mouseDown << PointT( 10,10 );

mouseMove << PointT( 20,20 );

mouseUp << PointT( 30,30 );

for (const auto& path : paths)

{

cout << "Path: ";

for (const auto& point : path)

cout << "(" << point.first << "," << point.second << ") ";

cout << endl;

}

cout << endl;

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Example 2 - Creating reactive loops

///////////////////////////////////////////////////////////////////////////////////////////////////

namespace example2

{

using namespace std;

using namespace react;

REACTIVE_DOMAIN(D, sequential)

USING_REACTIVE_DOMAIN(D)

using PointT = pair<int,int>;

using PathT = vector<PointT>;

vector<PathT> paths;

EventSourceT<PointT> mouseDown = MakeEventSource<D,PointT>();

EventSourceT<PointT> mouseUp = MakeEventSource<D,PointT>();

EventSourceT<PointT> mouseMove = MakeEventSource<D,PointT>();

VarSignalT<int> counter = MakeVar<D>(103);

ReactorT loop

{

[&] (ReactorT::Context ctx)

{

PathT points;

points.emplace_back(ctx.Await(mouseDown));

auto count = ctx.Get(counter);

ctx.RepeatUntil(mouseUp, [&] {

points.emplace_back(ctx.Await(mouseMove));

});

points.emplace_back(ctx.Await(mouseUp));

paths.push_back(points);

}

};

void Run()

{

cout << "Example 2 - Creating reactive loops" << endl;

mouseDown << PointT( 1,1 );

mouseMove << PointT( 2,2 ) << PointT( 3,3 ) << PointT( 4,4 );

mouseUp << PointT( 5,5 );

counter <<= 42;

mouseMove << PointT( 999,999 );

counter <<= 80;

mouseDown << PointT( 10,10 );

mouseMove << PointT( 20,20 );

mouseUp << PointT( 30,30 );

for (const auto& path : paths)

{

cout << "Path: ";

for (const auto& point : path)

cout << "(" << point.first << "," << point.second << ") ";

cout << endl;

}

cout << endl;

}

///////////////////////////////////////////////////////////////////////////////////////////////////

/// Run examples

///////////////////////////////////////////////////////////////////////////////////////////////////

int main()

{

example1::Run();

example2::Run();

return 0;

}

cpp.react/examples/src/BasicReactors.cpp at master · zengyuxing007/cpp.react · GitHub

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