Method getPolygonTextureAndShade

src/Geoscape/Globe.cpp:2036–2062

* Get the polygons texture at a given point * @param lon Longitude of the point. * @param lat Latitude of the point. * @param texture pointer to texture ID returns -1 when polygon not found * @param shade pointer to shade */

 * @param shade pointer to shade
 */
void Globe::getPolygonTextureAndShade(double lon, double lat, int *texture, int *shade) const
{
	///this is shade conversion from 0..31 levels of geoscape to battlescape levels 0..15
	int worldshades[32] = {  0, 0, 0, 0, 1, 1, 2, 2,
							 3, 3, 4, 4, 5, 5, 6, 6,
							 7, 7, 8, 8, 9, 9,10,11,
							11,12,12,13,13,14,15,15};

	*texture = -1;
	*shade = worldshades[ CreateShadow::getShadowValue(0, Cord(0.,0.,1.), getSunDirection(lon, lat), 0) ];

	// We're only temporarily changing cenLon/cenLat so the "const" is actually preserved
	Globe* const globe = const_cast<Globe* const>(this); // WARNING: BAD CODING PRACTICE
	double oldLon = _cenLon, oldLat = _cenLat;
	globe->_cenLon = lon;
	globe->_cenLat = lat;
	for (std::list<Polygon*>::iterator i = _game->getResourcePack()->getPolygons()->begin(); i != _game->getResourcePack()->getPolygons()->end(); ++i)
	{
		if (insidePolygon(lon, lat, *i))
		{
			*texture = (*i)->getTexture();
			break;
		}
	}
	globe->_cenLon = oldLon;
	globe->_cenLat = oldLat;
}

/**
 * Checks if the globe is zoomed in to it's maximum.