https://github.com/ceceppa/anima/blob/main/addons/anima/core/constants.gd

Easings 

  enum EASING {
	LINEAR,   
	EASE,
	EASE_IN_OUT,
	EASE_IN,
	EASE_OUT,
	EASE_IN_SINE,
	EASE_OUT_SINE,
	EASE_IN_OUT_SINE,
	EASE_IN_QUAD,
	EASE_OUT_QUAD,
	EASE_IN_OUT_QUAD,
	EASE_IN_CUBIC,
	EASE_OUT_CUBIC,
	EASE_IN_OUT_CUBIC,
	EASE_IN_QUART,
	EASE_OUT_QUART,
	EASE_IN_OUT_QUART,
	EASE_IN_QUINT,
	EASE_OUT_QUINT,
	EASE_IN_OUT_QUINT,
	EASE_IN_EXPO,
	EASE_OUT_EXPO,
	EASE_IN_OUT_EXPO,
	EASE_IN_CIRC,
	EASE_OUT_CIRC,
	EASE_IN_OUT_CIRC,
	EASE_IN_BACK,
	EASE_OUT_BACK,
	EASE_IN_OUT_BACK,
	EASE_IN_ELASTIC,
	EASE_OUT_ELASTIC,
	EASE_IN_OUT_ELASTIC,
	EASE_IN_BOUNCE,
	EASE_OUT_BOUNCE,
	EASE_IN_OUT_BOUNCE,
}

PIVOT Points 

  enum PIVOT {
	TOP_LEFT,
	TOP_CENTER,
	TOP_RIGHT,
	CENTER_LEFT,
	CENTER,
	CENTER_RIGHT,
	BOTTOM_LEFT,
	BOTTOM_CENTER,
	BOTTOM_RIGHT
}

Visibility strategies 

  enum VISIBILITY {
	IGNORE,
	HIDDEN_ONLY,
	TRANSPARENT_ONLY,
	HIDDEN_AND_TRANSPARENT
}

Grid

Animation types 

  enum GRID {
	TOGETHER,
	SEQUENCE_TOP_LEFT,
	SEQUENCE_BOTTOM_RIGHT,
	COLUMNS_ODD,
	COLUMNS_EVEN,
	ROWS_ODD,
	ROWS_EVEN,
	ODD_ITEMS,
	EVEN_ITEMS,
	FROM_CENTER,
	FROM_POINT,
	RANDOM
}

Distance 

  enum DISTANCE {
	EUCLIDIAN,
	MANHATTAN,
	CHEBYSHEV,
	COLUMN,
	ROW,
	DIAGONAL,
}

Group animations type 

  const GROUP := {
	FROM_TOP = GRID.SEQUENCE_TOP_LEFT,
	FROM_BOTTOM = GRID.SEQUENCE_BOTTOM_RIGHT,
	FROM_CENTER = GRID.FROM_CENTER,
	ODDS_ONLY = GRID.COLUMNS_ODD,
	EVEN_ONLY = GRID.COLUMNS_EVEN,
	RANDOM = GRID.RANDOM,
	TOGETHER = GRID.TOGETHER,
	FROM_INDEX = GRID.FROM_POINT
}

Loop strategies 

  enum LOOP_STRATEGY {
	USE_EXISTING_RELATIVE_DATA,
	RECALCULATE_RELATIVE_DATA,
}

Apply initial values 

  enum APPLY_INITIAL_VALUES {
	ON_ANIMATION_CREATION,
	ON_PLAY
}

Other constants 

  const DEFAULT_DURATION := 0.7
const DEFAULT_ITEMS_DELAY := 0.05
const MINIMUM_DURATION := 0.000001