/*****************************************************************************************
*                                                                                       *
* OpenSpace                                                                             *
*                                                                                       *
* Copyright (c) 2014-2016                                                               *
*                                                                                       *
* Permission is hereby granted, free of charge, to any person obtaining a copy of this  *
* software and associated documentation files (the "Software"), to deal in the Software *
* without restriction, including without limitation the rights to use, copy, modify,    *
* merge, publish, distribute, sublicense, and/or sell copies of the Software, and to    *
* permit persons to whom the Software is furnished to do so, subject to the following   *
* conditions:                                                                           *
*                                                                                       *
* The above copyright notice and this permission notice shall be included in all copies *
* or substantial portions of the Software.                                              *
*                                                                                       *
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,   *
* INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A         *
* PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT    *
* HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF  *
* CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE  *
* OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                                         *
****************************************************************************************/

// open space includes
#include <modules/globebrowsing/other/distanceswitch.h>

namespace {
	const std::string _loggerCat = "DistanceSwitch";
}

namespace openspace {

DistanceSwitch::DistanceSwitch(){

}

DistanceSwitch::~DistanceSwitch() {

}

bool DistanceSwitch::initialize() {
	for (int i = 0; i < _renderables.size(); ++i) {
		_renderables[i]->initialize();
	}
	return true;
}

bool DistanceSwitch::deinitialize() {
	for (int i = 0; i < _renderables.size(); ++i) {
		_renderables[i]->deinitialize();
	}
	return true;
}

bool DistanceSwitch::isReady() const {
	return true;
}

void DistanceSwitch::render(const RenderData& data) {
	if (_maxDistances.size() == 0) {
		return;
	}

	pss pssDistanceToCamera = (data.camera.position() - data.position).length();
	double distanceToCamera = pssDistanceToCamera.lengthd();

	if (distanceToCamera > _maxDistances.back()) {
		return;
	}

	// linear search through nodes to find which Renderable to render
	for (int i = 0; i < _renderables.size(); ++i) {
		if (distanceToCamera < _maxDistances[i]) {
			_renderables[i]->render(data);
			return;
		}
	}
}

void DistanceSwitch::update(const UpdateData& data) {
	for (int i = 0; i < _renderables.size(); ++i) {
		_renderables[i]->update(data);
	}
}


void DistanceSwitch::addSwitchValue(std::shared_ptr<Renderable> renderable, double maxDistance) {
	ghoul_assert(maxDistance > 0, "Renderable must have a positive maxDistance");
	if (_maxDistances.size() > 0){
		ghoul_assert(maxDistance > _maxDistances.back(),
			"Renderables must be inserted in ascending order wrt distance");
	}
	_renderables.push_back(renderable);
	_maxDistances.push_back(maxDistance);
}

}  // namespace openspace

