public static List <Vector2> tessellateBezier(float x1, float y1, float x2, float y2,
float x3, float y3, float x4, float y4, float tessTol)
{
var key = new TessellationKey(x1, y1, x2, y2, x3, y3, x4, y4, tessTol);
_tessellations.TryGetValue(key, out var tessellationInfo);
if (tessellationInfo != null)
{
tessellationInfo.touch();
return(tessellationInfo.points);
}
var points = _tessellateBezier(x1, y1, x2, y2, x3, y3, x4, y4, tessTol);
_tessellations[key] = new TessellationInfo(key, points);
return(points);
}
public TessellationInfo(TessellationKey key, List <Vector2> points, int timeToLive = 5)
{
this.points = points;
this.key = key;
this.touch(timeToLive);
}