David Gwilliam
2d28e92594
Reviewed-on: klubhaus/sideline#53 Co-authored-by: David Gwilliam <dhgwilliam@gmail.com> Co-committed-by: David Gwilliam <dhgwilliam@gmail.com>
61 lines
2.0 KiB
Python
61 lines
2.0 KiB
Python
"""Checkerboard data source for visual pattern generation."""
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from engine.data_sources.sources import DataSource, SourceItem
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class CheckerboardDataSource(DataSource):
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"""Data source that generates a checkerboard pattern.
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Creates a grid of alternating characters, useful for testing motion effects
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and camera movement. The pattern is static; movement comes from camera panning.
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"""
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def __init__(
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self,
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width: int = 200,
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height: int = 200,
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square_size: int = 10,
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char_a: str = "#",
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char_b: str = " ",
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):
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"""Initialize checkerboard data source.
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Args:
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width: Total pattern width in characters
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height: Total pattern height in lines
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square_size: Size of each checker square in characters
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char_a: Character for "filled" squares (default: '#')
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char_b: Character for "empty" squares (default: ' ')
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"""
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self.width = width
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self.height = height
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self.square_size = square_size
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self.char_a = char_a
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self.char_b = char_b
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@property
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def name(self) -> str:
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return "checkerboard"
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@property
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def is_dynamic(self) -> bool:
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return False
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def fetch(self) -> list[SourceItem]:
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"""Generate the checkerboard pattern as a single SourceItem."""
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lines = []
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for y in range(self.height):
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line_chars = []
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for x in range(self.width):
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# Determine which square this position belongs to
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square_x = x // self.square_size
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square_y = y // self.square_size
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# Alternate pattern based on parity of square coordinates
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if (square_x + square_y) % 2 == 0:
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line_chars.append(self.char_a)
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else:
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line_chars.append(self.char_b)
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lines.append("".join(line_chars))
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content = "\n".join(lines)
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return [SourceItem(content=content, source="checkerboard", timestamp="0")]
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