public static bool CreateCircumscribed(Vector2 v0, Vector2 v1, Vector2 v2, out Circle2 circle)
{
Vector2 vector = v1 - v0;
Vector2 vector2 = v2 - v0;
float[,] array = new float[2, 2];
array[0, 0] = vector.x;
array[0, 1] = vector.y;
array[1, 0] = vector2.x;
array[1, 1] = vector2.y;
float[,] a = array;
float[] b = new float[]
{
0.5f * vector.sqrMagnitude,
0.5f * vector2.sqrMagnitude
};
Vector2 b2;
if (LinearSystem.Solve2(a, b, out b2, 1E-05f))
{
circle.Center = v0 + b2;
circle.Radius = b2.magnitude;
return(true);
}
circle = default(Circle2);
return(false);
}
public static bool Solve2(float[,] A, float[] B, out Vector2 X, float zeroTolerance = 1E-05f)
{
float[] array;
bool flag = LinearSystem.Solve2(A, B, out array, zeroTolerance);
if (flag)
{
X.x = array[0];
X.y = array[1];
}
else
{
X = Vector2ex.Zero;
}
return(flag);
}
internal static bool HeightLineFit2(IList <Vector2> points, out float a, out float b)
{
float num = 0f;
float num2 = 0f;
float num3 = 0f;
float num4 = 0f;
int count = points.Count;
for (int i = 0; i < count; i++)
{
num += points[i].x;
num2 += points[i].y;
num3 += points[i].x * points[i].x;
num4 += points[i].x * points[i].y;
}
float[,] array = new float[2, 2];
array[0, 0] = num3;
array[0, 1] = num;
array[1, 0] = num;
array[1, 1] = (float)count;
float[,] a2 = array;
float[] b2 = new float[]
{
num4,
num2
};
float[] array2;
bool flag = LinearSystem.Solve2(a2, b2, out array2, 1E-05f);
if (flag)
{
a = array2[0];
b = array2[1];
}
else
{
a = 3.40282347E+38f;
b = 3.40282347E+38f;
}
return(flag);
}