Video Renderer

lerax.render.VideoRenderer

Bases: Abstract2DRenderer

Renderer wrapper that records frames to a video file.

It forwards all drawing operations to the underlying renderer and captures the framebuffer on each call to draw(). When close() is called, the accumulated frames are written to output_path as a video.

Note

This renderer is not JIT-safe and is intended for use in Python loops (e.g. via env.render_states / env.render_stacked).

Attributes:

Name	Type	Description
`transform`	`Transform`	Transform from world space to pixel space.
`inner`	`Abstract2DRenderer`	The underlying renderer to which drawing operations are forwarded.
`output_path`	`str`	Path to the output video file.
`fps`	`float`	Frames per second for the output video.
`frames`	`list`	List of captured frames.

Parameters:

Name	Type	Description	Default
`inner`	`Abstract2DRenderer`	The underlying renderer to which drawing operations are forwarded.	required
`output_path`	`str`	Path to the output video file.	required
`fps`	`float`	Frames per second for the output video.	`60.0`

transform `instance-attribute`

transform: Transform = inner.transform

inner `instance-attribute`

inner: Abstract2DRenderer = inner

output_path `instance-attribute`

output_path: str = output_path

fps `instance-attribute`

fps: float = fps

frames `instance-attribute`

frames: list = []

init

__init__(
    inner: Abstract2DRenderer,
    output_path: str,
    fps: float = 60.0,
) -> None

open

open()

close

close()

draw

draw()

clear

clear()

draw_circle

draw_circle(
    center: Float[ArrayLike, "2"],
    radius: Float[ArrayLike, ""],
    color: Color,
)

draw_line

draw_line(
    start: Float[ArrayLike, "2"],
    end: Float[ArrayLike, "2"],
    color: Color,
    width: Float[ArrayLike, ""] = 1,
)

draw_rect

draw_rect(
    center: Float[ArrayLike, "2"],
    w: Float[ArrayLike, ""],
    h: Float[ArrayLike, ""],
    color: Color,
)

draw_polygon

draw_polygon(
    points: Float[ArrayLike, "num 2"], color: Color
)

draw_text

draw_text(
    center: Float[ArrayLike, "2"],
    text: str,
    color: Color,
    size: Float[ArrayLike, ""] = 12,
)

draw_polyline

draw_polyline(
    points: Float[ArrayLike, "num 2"], color: Color
)

draw_ellipse

draw_ellipse(
    center: Float[ArrayLike, "2"],
    w: Float[ArrayLike, ""],
    h: Float[ArrayLike, ""],
    color: Color,
)

as_array

as_array() -> Float[ArrayLike, 'H W 3']