"""PanelCascade composition builder method."""
from typing import TYPE_CHECKING
if TYPE_CHECKING:
from ....generator.composition_builder import CompositionBuilder
def add_to_composition(
builder: "CompositionBuilder",
start_time: float,
items: list | None = None,
cascade_type: str = "from_edges",
stagger_delay: float = 0.08,
duration: float = 5.0,
) -> "CompositionBuilder":
"""
Add PanelCascade to the composition.
Returns:
CompositionBuilder instance for chaining
"""
from ....generator.composition_builder import ComponentInstance
# Calculate frames if time-based props exist
start_frame = builder.seconds_to_frames(locals().get("start_time", 0.0))
duration_frames = builder.seconds_to_frames(
locals().get("duration_seconds") or locals().get("duration", 5.0)
)
component = ComponentInstance(
component_type="PanelCascade",
start_frame=start_frame,
duration_frames=duration_frames,
props={
"items": items or [],
"cascade_type": cascade_type,
"stagger_delay": stagger_delay,
"start_time": start_time,
"duration": duration,
},
layer=0,
)
builder.components.append(component)
return builder