Roland Conybeare
81a8a3dd84
subrepo: subdir: "xo-process" merged: "ff603471" upstream: origin: "git@github.com:Rconybea/xo-process.git" branch: "main" commit: "ff603471" git-subrepo: version: "0.4.9" origin: "???" commit: "???"
91 lines
2.9 KiB
C++
91 lines
2.9 KiB
C++
/* file Realization2.hpp
|
|
*
|
|
* author: Roland Conybeare, Nov 2022
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#include "AbstractRealization.hpp"
|
|
#include "xo/reflect/Reflect.hpp"
|
|
//#include "time/Time.hpp"
|
|
|
|
namespace xo {
|
|
namespace process {
|
|
template<typename T>
|
|
class Realization2 : public AbstractRealization {
|
|
}; /*Realization2*/
|
|
|
|
/* Rstate: state needed to trace unfolding of a process
|
|
* realization; will be process-specific.
|
|
*
|
|
* Pattern like:
|
|
* StochasticProcess p
|
|
* Rstate rs
|
|
* Realization2 rz
|
|
*
|
|
* +----+ +----+
|
|
* | rz +----| rs |
|
|
* +--+-+ +----+
|
|
* | ^
|
|
* +----+ |
|
|
* | p | <----/
|
|
* +----+
|
|
*
|
|
* rz owns rs, sends it to p to be modified as p needs
|
|
* p knows type Rstate, initially creates it
|
|
* therefore also knows how to create its own realizations
|
|
*
|
|
*
|
|
* Require:
|
|
* - Process -isa-> Realizable2Process<T, Rstate>
|
|
*/
|
|
template<typename T, typename Rstate, typename Process>
|
|
class ProcessRealization2 : public Realization2<T> {
|
|
public:
|
|
using TaggedRcptr = reflect::TaggedRcptr;
|
|
using nanos = xo::time::nanos;
|
|
|
|
public:
|
|
ProcessRealization2(Rstate const & rstate, rp<Process> const & process)
|
|
: rstate_{rstate}, process_{process} {}
|
|
ProcessRealization2(Rstate && rstate, rp<Process> const & process)
|
|
: rstate_{std::move(rstate)}, process_{process} {}
|
|
|
|
Rstate const & rstate() const { return rstate_; }
|
|
rp<Process> const & process() const { return process_; }
|
|
|
|
/* sample process at point .rstate.tk + dt
|
|
* Require:
|
|
* - dt >= 0
|
|
*/
|
|
void advance_dt(nanos dt) {
|
|
this->process_->rstate_sample_inplace(dt, &(this->rstate_));
|
|
} /*advance_dt*/
|
|
|
|
// ----- inherited from AbstractRealization -----
|
|
|
|
virtual rp<AbstractStochasticProcess> stochastic_process() const override {
|
|
return process_;
|
|
} /*stochastic_process*/
|
|
|
|
// ----- inherited from SelfTagging -----
|
|
|
|
virtual TaggedRcptr self_tp() override { return reflect::Reflect::make_rctp(this); }
|
|
|
|
private:
|
|
/* realization state
|
|
* this type is determined by .process;
|
|
* sufficient state to develop faithful realization
|
|
*/
|
|
Rstate rstate_;
|
|
/* process (set of paths + probability measure);
|
|
* *this coordinates with .process to constructively samples one such path
|
|
*/
|
|
rp<Process> process_;
|
|
}; /*ProcessRealization2*/
|
|
} /*namespace process*/
|
|
|
|
} /*namespace xo*/
|
|
|
|
|
|
/* end Realization2.hpp */
|