//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//
// Copyright (c) Lawrence Livermore National Security, LLC and other Ascent
// Project developers. See top-level LICENSE AND COPYRIGHT files for dates and
// other details. No copyright assignment is required to contribute to Ascent.
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~//

//-----------------------------------------------------------------------------
///
/// file: ascent_first_light_example.cpp
///
//-----------------------------------------------------------------------------

#include <iostream>

#include "ascent.hpp"
#include "conduit_blueprint.hpp"

using namespace ascent;
using namespace conduit;

int main(int argc, char **argv)
{
    // echo info about how ascent was configured
    std::cout << ascent::about() << std::endl;

    // create conduit node with an example mesh using 
    // conduit blueprint's braid function
    // ref: https://llnl-conduit.readthedocs.io/en/latest/blueprint_mesh.html#braid

    // things to explore:
    //  changing the mesh resolution

    Node mesh;
    conduit::blueprint::mesh::examples::braid("hexs",
                                              50,
                                              50,
                                              50,
                                              mesh);

    // create an Ascent instance
    Ascent a;

    // open ascent
    a.open();

    // publish mesh data to ascent
    a.publish(mesh);

    //
    // Ascent's interface accepts "actions"
    // that to tell Ascent what to execute
    //
    Node actions;
    Node &add_act = actions.append();
    add_act["action"] = "add_scenes";

    // Create an action that tells Ascent to:
    // add a scene (s1) with one plot (p1)
    // that will render a pseudocolor of 
    // the mesh field `braid`
    Node & scenes = add_act["scenes"];

    // things to explore:
    //  changing plot type (mesh)
    //  changing field name (for this dataset: radial)
    scenes["s1/plots/p1/type"] = "pseudocolor";
    scenes["s1/plots/p1/field"] = "braid";
    // set the output file name (ascent will add ".png")
    scenes["s1/image_name"] = "out_first_light_render_3d";
    
    // view our full actions tree
    std::cout << actions.to_yaml() << std::endl;

    // execute the actions
    a.execute(actions);

    // close ascent
    a.close();
}