CoGLRender.h

/*
Copyright (c) 2013, Los Alamos National Security, LLC
All rights reserved.
Copyright 2013. Los Alamos National Security, LLC. This software was produced under U.S. Government contract DE-AC52-06NA25396 for Los Alamos National Laboratory (LANL),
which is operated by Los Alamos National Security, LLC for the U.S. Department of Energy. The U.S. Government has rights to use, reproduce, and distribute this software.

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*/

#ifndef CoGLRender_H
#define CoGLRender_H

#if defined (__APPLE__) || defined(MACOSX)
#include <mac/glew.h>
#include <OpenGL/gl.h>
#include <GLUT/glut.h>
#include <OpenGL/OpenGL.h>
#else
#include <GL/glew.h>
#include <GL/gl.h>
#include <GL/glut.h>
#endif

#ifdef USE_INTEROP
#include <cuda_gl_interop.h>
#endif

#include <thrust/host_vector.h>
#include <thrust/functional.h>
#include <thrust/iterator/transform_iterator.h>
#include <thrust/iterator/discard_iterator.h>

#include <sys/time.h>
#include <stdio.h>

#include "piston/util/quaternion.h"
#include "CoGLSim.h"
using namespace piston;


//!************************************************************************************************************
// Class CoGLRender
//
// This class provides the OpenGL rendering infrastructure for visualizing the results of the simulation.  It 
// contains a pointer to an instance of the CoGLSim class, which performs the actual simulation.
//!************************************************************************************************************
class CoGLRender
{
    //-----------------------
    // METHODS
    //-----------------------
public:

    //! Constructor and destructor
    CoGLRender();
    ~CoGLRender();

    //! Rendering methods 
    void initialize();
    void display();
    void rotate(float a_angle1, float a_angle2);
    void zoom(float a_delta);

    //! Methods to initialize and update the simulation
    void initialize_simulation();
    void time_step();
    void time_simulation(int a_iters);

    //-----------------------
    // PROPERTIES
    //-----------------------
protected:

    //! Pointer to instance of CoGLSim class, which performs the simulation
    CoGLSim<double>* simulation;

    //! Simulation variables for initializations
    int max_timesteps, cur_timestep;
    double delta,h,as,ac,ao,d2,eo,tau,eta,temp,shear_a,bulk_a;
    double eta0_xx,eta0_yy,eta0_zz,e1_0,e3_0;

    //! Host vectors for simulation initial values
    thrust::host_vector<double> h_ux, h_uy, h_uz;
    thrust::host_vector<double> h_uxdt, h_uydt, h_uzdt;
    thrust::host_vector<double> h_uxx_applied;

    //! Rendering variables
    float rotation_matrix[16];
    Quaternion qrot;
    float max_camera_fov, zoom_pct;

    //! Vectors for rendering vertices, normals, and colors
    thrust::host_vector<float3> vertices;
    thrust::host_vector<float3> normals;
    thrust::host_vector<float4> colors;

    //! Vertex buffers for interop
    #ifdef USE_INTEROP
      GLuint vbo_buffers[3];  struct cudaGraphicsResource* vbo_resources[3];
    #endif

    //! Timing variables
    struct timeval begin, end, diff;
};

#endif