HermiteSplineInfo

Shared - used by classes in Teamfight Tactics and Spells and combat.

Inheritance 1 ancestor

• ISplineInfo
  • HermiteSplineInfocurrent

Class Documentation

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A spline that is a cubic Hermite curve, set by two control points that act as the tangents at its two ends.

The client builds the curve in a local frame: +Z points from the origin to the end point on the ground plane, +Y is up, and +X is (f.z, 0, -f.x) for the +Z direction f. In that frame:

• P0 is mStartPositionOffset and P1 is the end point.
• s is the distance on the ground plane from P0 to P1.
• The start tangent T0 is s * mControlPoint1 and the end tangent T1 is s * mControlPoint2.

The curve is

P(t) = (2t^3 - 3t^2 + 1) P0 + (t^3 - 2t^2 + t) T0 + (-2t^3 + 3t^2) P1 + (t^3 - t^2) T1

for t from 0 to 1. Because the tangents scale with s, the control points have no unit: they are multiples of the start-to-end distance.

Notes

• If the origin and the end point are at the same ground position, the client moves the origin back by 0.001 times mControlPoint1 to get a direction.
• The default control points give an S curve: the curve leaves toward local -X and arrives moving toward local +X.
• Shipped data uses it for the paths of spline missiles, for the TFT damage skin ceremony paths and for the curve of spline indicators.

Properties

mControlPoint1

Vec3 = [-1, 0, 0]

Documentation Edit documentation

Start tangent, as a multiple of the start-to-end distance, in the local frame.

mControlPoint2

Vec3 = [1, 0, 0]

Documentation Edit documentation

End tangent, as a multiple of the start-to-end distance, in the local frame.

mControlPoint1

mControlPoint2