public static float Difference(Rotation2 r1, Rotation2 r2)
{
var higher = Math.Max(r1.Degrees, r2.Degrees);
var lower = Math.Min(r1.Degrees, r2.Degrees);
return(higher - lower);
}
public Transform2(Vector2 location, Rotation2 rotation, Size2 size, float scale, int zIndex)
{
Location = location;
Rotation = rotation;
Size = size;
Scale = scale;
ZIndex = zIndex;
}
public static Transform2 Lerp(Transform2 t1, Transform2 t2, float amount)
{
return(new Transform2(
Vector2.Lerp(t1.Location, t2.Location, amount),
Rotation2.Lerp(t1.Rotation, t2.Rotation, amount),
Size2.Lerp(t1.Size, t2.Size, amount),
MathHelper.Lerp(t1.Scale, t2.Scale, amount),
Convert.ToInt32(MathHelper.Lerp(t1.ZIndex, t2.ZIndex, amount))));
}
public Rotation2 ToCardinal(Rotation2 previousCardinalRotation)
{
var degrees = (int)Degrees;
if (315 < degrees || degrees < 45)
{
return(Rotation2.Up);
}
if (45 < degrees && degrees < 135)
{
return(Rotation2.Right);
}
if (135 < degrees && degrees < 225)
{
return(Rotation2.Down);
}
if (225 < degrees && degrees < 315)
{
return(Rotation2.Left);
}
if (degrees == 45)
{
return(Math.Abs(previousCardinalRotation.Degrees) < 0.01 ? Rotation2.Right : Rotation2.Up);
}
if (degrees == 135)
{
return(Math.Abs(previousCardinalRotation.Degrees - 180) < 0.01 ? Rotation2.Right : Rotation2.Down);
}
if (degrees == 225)
{
return(Math.Abs(previousCardinalRotation.Degrees - 180) < 0.01 ? Rotation2.Left : Rotation2.Down);
}
if (degrees == 315)
{
return(Math.Abs(previousCardinalRotation.Degrees) < 0.01 ? Rotation2.Left : Rotation2.Up);
}
throw new Exception("The developer made a horrible mistake if you see this!");
}
public Transform2(Vector2 location, Rotation2 rotation, Size2 size, float scale)
: this(location, rotation, size, scale, 0)
{
}
public Transform2(Vector2 location, Rotation2 rotation, float scale)
: this(location, rotation, Size2.Zero, scale)
{
}
public Transform2(Rotation2 rotation)
: this(Vector2.Zero, rotation, Size2.Zero, 1)
{
}
public Transform2(Vector2 location, Rotation2 rotation, Size2 size, float scale, int zIndex)
: this(location, rotation, size, scale, new ZIndex(zIndex))
{
}
public static Rotation2 Lerp(Rotation2 r1, Rotation2 r2, float amount)
{
var degrees = Difference(r1, r2);
return(new Rotation2(r1.Degrees + (amount * degrees)));
}
