// ----------------------------------------------------------------------------------------
#region WireframePointBase
public virtual void CalculatePointsF(float length, Func <Single3, PointF> func)
{
OriginF = new PointF(float.NaN, float.NaN); // default
RayEndF = new PointF(float.NaN, float.NaN); // default
NormalEndF = new PointF(float.NaN, float.NaN); // default
if (!Single3.IsNaN(Origin))
{
OriginF = func(Origin);
if (!double.IsNaN(length))
{
if (!Single3.IsNaN(Direction))
{
RayEndF = func(Origin + length * Direction);
}
if (!Single3.IsNaN(Normal))
{
NormalEndF = func(Origin + length * Normal);
}
}
}
}
// ----------------------------------------------------------------------------------------
#region Draw
public PointF Project(Single3 point)
{
PointF result = new PointF(float.NaN, float.NaN); // Default value
if (!Single3.IsNaN(point))
{
float zoom = Zoom;
if (!float.IsNaN(zoom) && zoom > 0d)
{
float biggestSize = BiggestSize;
if (!float.IsNaN(biggestSize) && biggestSize > 0d)
{
Single3 p2 = RotMat * (point - Origin); // 9 multiplications, 6 additions
if (Perspective > 0d)
{
float b = Perspective * p2.Y / biggestSize;
zoom /= (1f + b);
}
result = new PointF(ToSingle(_centerX + zoom * p2.X), ToSingle(_centerY - zoom * p2.Z)); // 2 multiplications, 2 additions
}
}
}
return(result);
}