unreal.MotionTrajectoryBlueprintLibrary

class unreal.MotionTrajectoryBlueprintLibrary(outer: Object | None = None, name: Name | str = 'None')

Bases: BlueprintFunctionLibrary

Motion Trajectory Blueprint Library

C++ Source:

  • Plugin: MotionTrajectory

  • Module: MotionTrajectory

  • File: MotionTrajectoryLibrary.h

classmethod debug_draw_trajectory(actor, world_transform, trajectory, prediction_color=[0.000000, 1.000000, 0.000000, 1.000000], history_color=[0.000000, 0.000000, 1.000000, 1.000000], transform_scale=10.000000, transform_thickness=2.000000, arrow_scale=0.025000, arrow_size=40.000000, arrow_thickness=2.000000) → None

Projects trajectory samples onto a defined set of allowed directions

Parameters:

  • actor (Actor) –

  • world_transform (Transform) – Input world transform to establish a world-space basis for drawing the trajectory

  • trajectory (TrajectorySampleRange) – Input trajectory range

  • prediction_color (LinearColor) – Input prediction color to interpolate sample drawing towards

  • history_color (LinearColor) – Input historical color to interpolate sample drawing towards

  • transform_scale (float) –

  • transform_thickness (float) –

  • arrow_scale (float) – Input sample velocity draw scale

  • arrow_size (float) – Input sample arrow draw size

  • arrow_thickness (float) – Input sample arrow draw thickness

classmethod flatten_trajectory2d(trajectory) → TrajectorySampleRange

Removes the Z axis motion contribution from a trajectory range

Parameters:

trajectory (TrajectorySampleRange) – Input trajectory range

Returns:

Z axis flattened, modified trajectory range

Return type:

TrajectorySampleRange

classmethod is_constant_speed_trajectory(trajectory, speed=0.000000, tolerance=0.001000) → bool

Returns true if the furthest future sample, at the end of the trajectory, and the present sample, have a velocity magnitude that is within Tolerance of Speed.

Parameters:

  • trajectory (TrajectorySampleRange) – Trajectory being evaluated.

  • speed (float) – Speed that must be matched at present and future for this function to return true

  • tolerance (float) – How much the trajectory speed can deviate from Speed

Returns:

True if the trajectory is at the desired speed.

Return type:

bool

classmethod is_starting_trajectory(trajectory, move_min_speed=1.000000, idle_max_speed=0.000000) → bool

Returns true if the furthest past sample, at the beginning of the trajectory, has velocity magnitude below IdleMaxSpeed and present speed above MoveMinSpeed.

Parameters:

  • trajectory (TrajectorySampleRange) – Trajectory being evaluated.

  • move_min_speed (float) – Minimum current speed required for this function to return true.

  • idle_max_speed (float) – Maximum speed at the furthest past sample for this function to return true.

Returns:

True if a start is detected; false otherwise.

Return type:

bool

classmethod is_stopping_trajectory(trajectory, move_min_speed=1.000000, idle_max_speed=0.000000) → bool

Returns true if the furthest future sample, at the end of the trajectory, has velocity magnitude below IdleMaxSpeed and present speed above MoveMinSpeed.

Parameters:
Return type:

bool

classmethod make_trajectory_relative_to_component(actor_trajectory, component) → TrajectorySampleRange

Rotates the trajectory to make it relative to the component specified as a parameter

Parameters:
Returns:

Trajectory relative to Component

Return type:

TrajectorySampleRange

classmethod rotate_trajectory(trajectory, rotation) → TrajectorySampleRange

Rotates the trajectory

Parameters:

  • trajectory (TrajectorySampleRange) – Input trajectory range

  • rotation (Quat) – Rotation to be applied to all trajectory samples

Returns:

Rotated trajectory

Return type:

TrajectorySampleRange