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Point sampler for a Path3D.
This node takes its parent Path3D, and returns the coordinates of a point within it, given a distance from the first vertex.
It is useful for making other nodes follow a path, without coding the movement pattern. For that, the nodes must be children of this node. The descendant nodes will then move accordingly when setting the progress in this node.
RotationMode ROTATION_NONE =
Forbids the PathFollow3D to rotate.
RotationMode ROTATION_Y =
Allows the PathFollow3D to rotate in the Y axis only.
RotationMode ROTATION_XY =
Allows the PathFollow3D to rotate in both the X, and Y axes.
RotationMode ROTATION_XYZ =
Allows the PathFollow3D to rotate in any axis.
RotationMode ROTATION_ORIENTED =
bool cubic_interp =
true, the position between two cached points is interpolated cubically, and linearly otherwise.
The points along the Curve3D of the Path3D are precomputed before use, for faster calculations. The point at the requested offset is then calculated interpolating between two adjacent cached points. This may present a problem if the curve makes sharp turns, as the cached points may not follow the curve closely enough.
There are two answers to this problem: either increase the number of cached points and increase memory consumption, or make a cubic interpolation between two points at the cost of (slightly) slower calculations.
float h_offset =
The node's offset along the curve.
bool loop =
true, any offset outside the path's length will wrap around, instead of stopping at the ends. Use it for cyclic paths.
float progress =
The distance from the first vertex, measured in 3D units along the path. Changing this value sets this node's position to a point within the path.
float progress_ratio =
The distance from the first vertex, considering 0.0 as the first vertex and 1.0 as the last. This is just another way of expressing the progress within the path, as the progress supplied is multiplied internally by the path's length.
RotationMode rotation_mode =
Allows or forbids rotation on one or more axes, depending on the RotationMode constants being used.
bool tilt_enabled =
true, the tilt property of Curve3D takes effect.
float v_offset =
The node's offset perpendicular to the curve.
rotation_mode implicitly specifies how posture (forward, up and sideway direction) is calculated.