// %flair:license{
// This file is part of the Flair framework distributed under the
// CECILL-C License, Version 1.0.
// %flair:license}
//  created:    2016/09/01
//  filename:   FixedCamera.cpp
//
//  author:     Guillaume Sanahuja
//              Copyright Heudiasyc UMR UTC/CNRS 7253
//
//  version:    $Id: $
//
//  purpose:    class for a fixed camera in the gui
//
/*********************************************************************/
#ifdef GL

#include "FixedCamera.h"
#include "Simulator.h"
#include "Model.h"
#include "Model_impl.h"
#include "Gui.h"
#include <ICursorControl.h>
#include <ICameraSceneNode.h>
#include <IrrlichtDevice.h>
#include <ISceneManager.h>
#include <Euler.h>

using namespace irr;
using namespace gui;
using namespace core;
using namespace scene;

namespace flair {
namespace simulator {

FixedCamera::FixedCamera(std::string name,core::Vector3D position,float inRotateSpeed,float inZoomSpeed):VisualizationCamera(name)  {
  RotY = -90;
  RotZ = 0;
  Rotating = false;
  rotateSpeed=inRotateSpeed;
  zoomSpeed=inZoomSpeed;
  camera->setPosition(vector3df(ToIrrlichtCoordinates(position)));
  fov=camera->getFOV();
}

FixedCamera::~FixedCamera() {}

float FixedCamera::sat(float value) {
  if (value >= -1)
    value = -1;
  if (value <= -179)
    value = -179;
  return value;
}

void FixedCamera::animateNode(ISceneNode *node, u32 timeMs) {
  ICameraSceneNode *camera = static_cast<ICameraSceneNode *>(node);

  float nRotY = RotY;
  float nRotZ = RotZ;

  if (LMouseKey == true) {
    if (!Rotating) {
      RotateStart = MousePos;
      Rotating = true;
      nRotY = RotY;
      nRotZ = RotZ;
    } else {
      nRotY += (RotateStart.Y - MousePos.Y) * rotateSpeed;
      nRotZ += (RotateStart.X - MousePos.X) * rotateSpeed;
      nRotY = sat(nRotY);
    }
  } else if (Rotating) {
    RotY += (RotateStart.Y - MousePos.Y) * rotateSpeed;
    RotZ += (RotateStart.X - MousePos.X) * rotateSpeed;
    RotY = sat(RotY);
    nRotY = RotY;
    nRotZ = RotZ;
    Rotating = false;
  }

  float newFov=fov+currentZoom*zoomSpeed;
  if(newFov>fov) {
    newFov=fov;
    currentZoom=0;
  }
  if(newFov<0) {
    newFov=zoomSpeed;
    currentZoom=1-fov/zoomSpeed;
  }

  camera->setRotation(vector3df(0,nRotY,nRotZ));
  camera->bindTargetAndRotation(true);
  camera->setFOV(newFov);
}


} // end namespace simulator
} // end namespace flair

#endif // GL