//---------------------------------------------------------------------//// Created by Jeffrey Ventrella for High Fidelity.// Copyright (c) 2013 High Fidelity, Inc. All rights reserved.////--------------------------------------------------------------------- #include <SharedUtil.h>#include <VoxelConstants.h>#include <OculusManager.h>// #include "Log.h" #include "Camera.h" Camera::Camera() {    _frustumNeedsReshape  = false;    _mode           = CAMERA_MODE_THIRD_PERSON;    _tightness      = 10.0; // default    _fieldOfView    = 60.0; // default    _nearClip       = 0.08; // default    _farClip        = 50.0 * TREE_SCALE; // default    _modeShift      = 0.0;    _yaw            = 0.0;    _pitch          = 0.0;    _roll           = 0.0;    _upShift        = 0.0;    _rightShift     = 0.0;    _distance       = 0.0;    _idealYaw       = 0.0;    _idealPitch     = 0.0;    _idealRoll      = 0.0;    _targetPosition = glm::vec3(0.0, 0.0, 0.0);    _position       = glm::vec3(0.0, 0.0, 0.0);    _idealPosition  = glm::vec3(0.0, 0.0, 0.0);    _orientation.setToIdentity();}  void Camera::update(float deltaTime)  {     if (_mode == CAMERA_MODE_NULL) {        _modeShift = 0.0;    } else {        // use iterative forces to push the camera towards the desired position and angle        updateFollowMode(deltaTime);                if (_modeShift < 1.0f) {            _modeShift += MODE_SHIFT_RATE * deltaTime;            if (_modeShift > 1.0f) {                _modeShift = 1.0f;            }        }    }        // do this AFTER making any changes to yaw pitch and roll....    generateOrientation();    } // generate the ortho-normals for the orientation based on the three Euler anglesvoid Camera::generateOrientation() {    _orientation.setToIdentity();    _orientation.pitch(_pitch);    _orientation.yaw  (_yaw  );    _orientation.roll (_roll );    } // use iterative forces to keep the camera at the desired position and anglevoid Camera::updateFollowMode(float deltaTime) {            // derive t from tightness    float t = _tightness * deltaTime;	    if (t > 1.0) {        t = 1.0;    }     // update _yaw (before position!)    if (OculusManager::isConnected()) {        _yaw = _idealYaw;        _pitch = _idealPitch;        _roll = _idealRoll;    } else {        _yaw   += (_idealYaw   - _yaw  ) * t;        _pitch += (_idealPitch - _pitch) * t;        _roll  += (_idealRoll  - _roll ) * t;    }     _orientation.yaw  (_yaw  );    _orientation.pitch(_pitch);    _orientation.roll (_roll );                float radian = (_yaw / 180.0) * PIE;     // update _position    double x = -_distance * sin(radian);    double z = -_distance * cos(radian);    double y = _upShift;             _idealPosition = _targetPosition + glm::vec3(x, y, z);        // pull position towards ideal position    _position += (_idealPosition - _position) * t; } void Camera::setMode(CameraMode  m) {     _mode = m;    _modeShift = 0.0f; } void Camera::setTargetRotation( float yaw, float pitch, float roll ) {    _idealYaw   = yaw;    _idealPitch = pitch;    _idealRoll  = roll;} void Camera::setFieldOfView(float f) {     _fieldOfView = f;     _frustumNeedsReshape = true; } void Camera::setAspectRatio(float a) {     _aspectRatio = a;     _frustumNeedsReshape = true; } void Camera::setNearClip   (float n) {     _nearClip = n;     _frustumNeedsReshape = true; } void Camera::setFarClip    (float f) {     _farClip = f;     _frustumNeedsReshape = true; } // call to find out if the view frustum needs to be reshapedbool Camera::getFrustumNeedsReshape() {    return _frustumNeedsReshape;} // call this after reshaping the view frustumvoid Camera::setFrustumWasReshaped() {    _frustumNeedsReshape = false;}