public bool BelongsToLine(StraightLine L2)
{
if (IsVertical != L2.IsVertical)
{
return(false);
}
if (IsVertical && L2.IsVertical)
{
return(A_Global.X == L2.GetX(0));
}
return(Gradient == L2.Gradient &&
Intercept == L2.Intercept);
}
/// <summary>
/// Returns true if the lines are equal, false if they are not.
/// </summary>
/// <param name="lineA">First line to test.</param>
/// <param name="lineB">Second Line to test.</param>
/// <param name="intersection">The point of intersection.</param>
/// <returns>True if the lines are equal</returns>
public bool GetIntersection(StraightLine lineA, StraightLine lineB, out Vector2 intersection)
{
float x;
float y;
bool aV = lineA.IsVertical;
bool bV = lineB.IsVertical;
intersection = new Vector2();
//Lines are equal: intersection.
if (lineA.Equals(lineB))
{
return(true);
}
//Lines are parallel: no intersection.
if (lineA.IsParallel(lineB))
{
return(false);
}
if (aV && !bV)
{
x = -lineA.C / lineA.A;
y = (-lineB.A * x - lineB.C) / lineB.B;
intersection = new Vector2(x, y);
return(true);
}
if (!aV && bV)
{
x = lineB.GetX(0);
y = (-lineA.A * x - lineA.C) / lineA.B;
intersection = new Vector2(x, y);
return(true);
}
if (!aV && !bV)
{
x = (lineB.Intercept - lineA.Intercept) / (lineA.Gradient - lineB.Gradient);
y = lineA.Gradient * x + lineA.Intercept;
intersection = new Vector2(x, y);
return(true);
}
throw new Exception("Well that wasn't supposed to happen...");
}
/// <summary>
/// Returns true if the lines are equal, false if they are not.
/// </summary>
/// <param name="lineA">First line to test.</param>
/// <param name="lineB">Second Line to test.</param>
/// <param name="intersection">The point of intersection.</param>
/// <returns>True if the lines are equal</returns>
public bool GetIntersection(StraightLine lineA, StraightLine lineB, out Vector2 intersection)
{
float x;
float y;
bool aV = lineA.IsVertical;
bool bV = lineB.IsVertical;
intersection = new Vector2();
//Lines are equal: intersection.
if (lineA.Equals(lineB))
return true;
//Lines are parallel: no intersection.
if (lineA.IsParallel(lineB))
return false;
if (aV && !bV)
{
x = -lineA.C / lineA.A;
y = (-lineB.A * x - lineB.C) / lineB.B;
intersection = new Vector2(x, y);
return true;
}
if (!aV && bV)
{
x = lineB.GetX(0);
y = (-lineA.A * x - lineA.C) / lineA.B;
intersection = new Vector2(x, y);
return true;
}
if (!aV && !bV)
{
x = (lineB.Intercept - lineA.Intercept) / (lineA.Gradient - lineB.Gradient);
y = lineA.Gradient * x + lineA.Intercept;
intersection = new Vector2(x, y);
return true;
}
throw new Exception("Well that wasn't supposed to happen...");
}
public bool BelongsToLine(StraightLine L2)
{
if (IsVertical != L2.IsVertical)
return false;
if (IsVertical && L2.IsVertical)
return A_Global.X == L2.GetX(0);
return Gradient == L2.Gradient
&& Intercept == L2.Intercept;
}