public static int GetNewTangentKeyMode(int currentTangentMode, TangentDirection leftRight, TangentMode mode) {
int output = currentTangentMode;
if (leftRight == TangentDirection.Left) {
output &= -7;
output |= ((int)mode) << 1;
}
else {
output &= -25;
output |= ((int)mode) << 3;
}
return output;
}
float DirectionToTangent(Vector2 direction, TangentDirection tangentDirection)
{
if (tangentDirection == TangentDirection.In && direction.x > 0.0001f)
{
return(float.PositiveInfinity);
}
if (tangentDirection == TangentDirection.Out && direction.x < -0.0001f)
{
return(float.PositiveInfinity);
}
return(direction.y / direction.x);
}
public static int GetNewTangentKeyMode(int currentTangentMode, TangentDirection leftRight, TangentMode mode)
{
int output = currentTangentMode;
if (leftRight == TangentDirection.Left)
{
output &= -7;
output |= (( int )mode) << 1;
}
else
{
output &= -25;
output |= (( int )mode) << 3;
}
return(output);
}
public static Vector3 GetTangent(this Quaternion quaternion, TangentDirection direction)
{
switch (direction)
{
case TangentDirection.Up:
return(Vector3.Transform(Vector3.UnitY, quaternion));
case TangentDirection.Down:
return(Vector3.Transform(-Vector3.UnitY, quaternion));
case TangentDirection.Left:
return(Vector3.Transform(Vector3.UnitX, quaternion));
case TangentDirection.Right:
return(Vector3.Transform(-Vector3.UnitX, quaternion));
}
return(Vector3.Zero);
}
public static Vector3 GetTangent(this Quaternion quaternion, TangentDirection direction)
{
switch(direction)
{
case TangentDirection.Up:
return Vector3.Transform(Vector3.UnitY, quaternion);
case TangentDirection.Down:
return Vector3.Transform(-Vector3.UnitY, quaternion);
case TangentDirection.Left:
return Vector3.Transform(Vector3.UnitX, quaternion);
case TangentDirection.Right:
return Vector3.Transform(-Vector3.UnitX, quaternion);
}
return Vector3.Zero;
}