private static PolygonSave ConvertTmxObjectToFrbPolygonSave(this TiledMapSave tiledMapSave, string name, double x, double y, double w, double h, double rotation, mapObjectgroupObjectEllipse ellipse)
{
var pointsSb = new StringBuilder();
if (ellipse == null)
{
pointsSb.AppendFormat("{0},{1}", -w / 2, -h / 2);
pointsSb.AppendFormat(" {0},{1}", w / 2, -h / 2);
pointsSb.AppendFormat(" {0},{1}", w / 2, h / 2);
pointsSb.AppendFormat(" {0},{1}", -w / 2, h / 2);
}
else
{
const double a = .5;
const double b = .5;
// x = a cos t
// y = b cos t
var first = true;
string firstPoint = "";
for (var angle = 0; angle <= 360; angle += 18)
{
var radians = MathHelper.ToRadians(angle);
// This code made the position of the poly be top left, not optimized!
//var newx = a*Math.Cos(radians)*w+w/2;
//var newy = b*Math.Sin(radians)*h+h/2;
var newx = a * Math.Cos(radians) * w;
var newy = b * Math.Sin(radians) * h;
if (first)
{
firstPoint = string.Format("{0},{1}", newx, newy);
}
pointsSb.AppendFormat("{2}{0},{1}", newx, newy, first ? "" : " ");
first = false;
}
pointsSb.AppendFormat(" {0}", firstPoint);
}
return(tiledMapSave.ConvertTmxObjectToFrbPolygonSave(name, x + w / 2.0f, y + h / 2.0f, rotation, pointsSb.ToString(), true));
}
private static PolygonSave ConvertTmxObjectToFrbPolygonSave(this TiledMapSave tiledMapSave, string name, double x, double y, double w, double h, double rotation, mapObjectgroupObjectEllipse ellipse)
{
var pointsSb = new StringBuilder();
if (ellipse == null)
{
pointsSb.Append("0,0");
pointsSb.AppendFormat(" {0},{1}", w, 0);
pointsSb.AppendFormat(" {0},{1}", w, h);
pointsSb.AppendFormat(" {0},{1}", 0, h);
}
else
{
const double a = .5;
const double b = .5;
// x = a cos t
// y = b cos t
var first = true;
string firstPoint = "";
for (var angle = 0; angle <= 360; angle += 18)
{
var radians = MathHelper.ToRadians(angle);
var newx = a*Math.Cos(radians)*w+w/2;
var newy = b*Math.Sin(radians)*h+h/2;
if (first)
{
firstPoint = string.Format("{0},{1}", newx, newy);
}
pointsSb.AppendFormat("{2}{0},{1}", newx, newy, first ? "" : " ");
first = false;
}
pointsSb.AppendFormat(" {0}", firstPoint);
}
return tiledMapSave.ConvertTmxObjectToFrbPolygonSave(name, x, y, rotation, pointsSb.ToString(), true);
}
