/* ScummVM - Graphic Adventure Engine
 *
 * ScummVM is the legal property of its developers, whose names
 * are too numerous to list here. Please refer to the COPYRIGHT
 * file distributed with this source distribution.
 *
 * This program is free software: you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation, either version 3 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *
 */

#include "tetraedge/te/te_marker.h"

namespace Tetraedge {

TeMarker::TeMarker() : _visible(true), _isActive(false), _zLoc(0) {
}

void TeMarker::active(bool val) {
	_isActive = val;
	_button.setVisible(_visible && val);
}

void TeMarker::update(TeCamera &camera) {
	_button.setVisible(true);
	if (!_visible)
		return;
	const TeVector3f32 transformLoc = camera.projectPoint3f32(_loc);
	const TeVector3f32 btnSize = _button.size();
	_button.setPositionType(TeILayout::ABSOLUTE);
	float vpWidth = camera.getViewportWidth();
	float vpHeight = camera.getViewportHeight();
	if (transformLoc.z() < 1.0f) {
		// Behind the camera, move off-screen.
		_button.setPosition(TeVector3f32(-btnSize.x() - vpWidth / 2, -btnSize.y() - vpHeight / 2, _zLoc));
	} else {
		TeVector3f32 buttonMiddle(transformLoc.x() - btnSize.x() / 2 - vpWidth / 2, transformLoc.y() - btnSize.y() / 2  - vpHeight / 2, _zLoc);
		// Note: device rotation is taken account of here in original, skip that.
		// Original also uses scales 480 and 320, but that makes it too small
		// in HD.
		//TeVector3f32 newScale(480.0f / vpWidth, 320.0f / vpHeight, 1.0);
		//_button.setScale(newScale);
		_button.setPosition(TeVector3f32(buttonMiddle.x(), buttonMiddle.y(), buttonMiddle.z()));
		/*debug("Updated button pos to %s (transformed %s middle %s)", _button.position().dump().c_str(), transformLoc.dump().c_str(), buttonMiddle.dump().c_str());*/
	}
}

void TeMarker::visible(bool vis) {
	_visible = vis;
	bool buttonVis = (vis && _isActive);
	_button.setVisible(buttonVis);
}

} // end namespace Tetraedge