private static Vector2[] setupGradient(int gradSize)
{
Vector2[] gradients = new Vector2[gradSize];
for (int i = 0; i < gradients.Length; ++i)
{
Vector2 v = new Vector2(JryMath.Sin(0.785398163f * i)
, JryMath.Cos(0.785398163f * i));
gradients[i] = v;
}
return(gradients);
}
public void RotateSelected(float factor, Vector2 center)
{
if (!HasSelectedPoints)
{
return;
}
for (int i = 0; i < _points.Count; i++)
{
var pt = _points[i];
var index = _selectedPoints.IndexOf(pt);
if (index != -1)
{
pt = pt - center;
var p = new Vector2(JryMath.Cos(factor) * pt.X - JryMath.Sin(factor) * pt.Y,
JryMath.Sin(factor) * pt.X + JryMath.Cos(factor) * pt.Y);
_points[i] = p + center;
_selectedPoints[index] = _points[i];
}
}
recalcEdges();
}
