private static bool FlatWithAccuracy2(Vertex2D v1, Vertex2D v2, Vertex2D vMid, float accuracy)
{
// compute double the signed area of the triangle (v1, vMid, v2)
var dblArea = (vMid.X - v1.X) * (v2.Y - v1.Y) - (v2.X - v1.X) * (vMid.Y - v1.Y);
return(dblArea * dblArea < accuracy);
}
public bool Equals(Vertex2D v)
{
if (v == null)
{
return(false);
}
return(X == v.X && Y == v.Y);
}
internal CatmullCurve2D(Vertex2D v0, Vertex2D v1, Vertex2D v2, Vertex2D v3)
{
var(dt0, dt1, dt2) = Clamp(
MathF.Sqrt((v1 - v0).Length()),
MathF.Sqrt((v2 - v1).Length()),
MathF.Sqrt((v3 - v2).Length())
);
_c.X = InitNonuniformCatmullCoeffs(v0.X, v1.X, v2.X, v3.X, dt0, dt1, dt2);
_c.Y = InitNonuniformCatmullCoeffs(v0.Y, v1.Y, v2.Y, v3.Y, dt0, dt1, dt2);
}
public float Dot(Vertex2D pv)
{
return(X * pv.X + Y * pv.Y);
}
public Vertex2D Sub(Vertex2D v)
{
X -= v.X;
Y -= v.Y;
return(this);
}
public Vertex2D Add(Vertex2D v)
{
X += v.X;
Y += v.Y;
return(this);
}
public bool Equals(Vertex2D v)
{
return(X == v.X && Y == v.Y);
}
