public static bool LineRectIntersection(this Rect rect, Vector2 lineStart,
Vector2 lineEnd, out Vector2 intersectionPoint)
{
Vector2 topLeft = rect.TopLeftGUI();
Vector2 topRight = rect.TopRightGUI();
Vector2 bottomLeft = rect.BottomLeftGUI();
Vector2 bottomRight = rect.BottomRightGUI();
intersectionPoint = Vector2.zero;
if (ZPMath.LineLineCollision(topLeft, topRight, lineStart, lineEnd, out intersectionPoint))
{
return(true);
}
if (ZPMath.LineLineCollision(topRight, bottomRight, lineStart, lineEnd, out intersectionPoint))
{
return(true);
}
if (ZPMath.LineLineCollision(bottomRight, bottomLeft, lineStart, lineEnd, out intersectionPoint))
{
return(true);
}
if (ZPMath.LineLineCollision(topLeft, bottomLeft, lineStart, lineEnd, out intersectionPoint))
{
return(true);
}
return(false);
}
/// <summary>
/// Helper to divide a Vector3Int by another while ignoring 0's in the other vector
/// (if the other vector has a 0 in an axis, that axis is ignored for division and the value
/// of this vector is used instead. i.e. if other.x == 0, then result.x == thisVector.x)
/// (Generally for getting averages of each axis)
/// </summary>
/// <param name="thisVector">This vector</param>
/// <param name="other">The vector that represents the values to divide by</param>
/// <param name="epsilon">Used to determine proximity to 0 to prevent divide by 0 errors</param>
/// <returns>The results of the division. If any axis is 0, thisVectors value for that axis will be substituted </returns>
public static Vector3Int SafeDivideComponents(this Vector3Int thisVector, Vector3Int other, float epsilon = 0.0001f)
{
for (int i = 0; i < 3; i++)
{
if (ZPMath.NearZero(other[i], epsilon))
{
other[i] = 1;
}
}
return(thisVector.DivideComponents(other));
}