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import {
Img,
Rect,
Node,
Video,
makeScene2D,
Txt,
Line,
LineSegment,
} from "@motion-canvas/2d";
import {
Direction,
beginSlide,
createRef,
map,
slideTransition,
tween,
all,
waitFor,
} from "@motion-canvas/core";
import { CodeBlock } from "@motion-canvas/2d/lib/components/CodeBlock";
import { theme } from "../theme";
const fibonacciFn = (n: number): number => {
if (n <= 2) {
return 1;
}
return fibonacciFn(n - 1) + fibonacciFn(n - 2);
};
const fibonacci = `
const fibonacci = (n: number): number => {
if (n <= 2) {
return 1;
}
return fibonacci(n - 1) + fibonacci(n - 2);
};
`
.split("\n")
.filter((x) => x.trim())
.join("\n");
export default makeScene2D(function* (view) {
const block = createRef<CodeBlock>();
const node = createRef<Node>();
const rect = createRef<Rect>();
const boxMoji = createRef<Txt>();
const inSegment = createRef<Line>();
const outSegment = createRef<Line>();
const input = createRef<Txt>();
const output = createRef<Txt>();
yield* view.add(
<>
<Rect
ref={rect}
radius={4}
stroke={theme.overlay0.hex}
fill={theme.crust.hex}
lineWidth={4}
padding={60}
layout
>
<Node ref={node} opacity={0}>
<CodeBlock
fontFamily={theme.font}
language="typescript"
ref={block}
fontSize={1}
code={fibonacci}
></CodeBlock>
</Node>
</Rect>
<Txt fontFamily={theme.font} fill={theme.text.hex} ref={boxMoji}>
😴
</Txt>
<Line
points={[]}
ref={inSegment}
stroke={theme.green.hex}
lineWidth={8}
radius={40}
endArrow
></Line>
<Line
points={[]}
ref={outSegment}
stroke={theme.red.hex}
lineWidth={8}
radius={40}
endArrow
></Line>
<Txt
opacity={0}
fontFamily={theme.font}
fill={theme.text.hex}
ref={input}
></Txt>
<Txt
opacity={0}
fontFamily={theme.font}
fill={theme.text.hex}
ref={output}
></Txt>
</>,
);
yield boxMoji().position(rect().middle());
yield* slideTransition(Direction.Left);
yield* beginSlide("Black Box");
const padding = 100;
const left = rect().left();
const right = rect().right();
yield* all(
inSegment().points([left.addX(-padding), left], 0.5),
outSegment().points([right, right.addX(padding)], 0.5),
);
yield input().position(left.addX(-padding));
yield output().position(right);
for (const i of [1, 2, 3]) {
yield* all(
input().opacity(1, 0.5),
input().text(i.toString(), 0.5),
input().position(left.addX(-padding - 20), 0.5),
);
yield* beginSlide("Input " + i);
yield* input().position(left, 0.5);
yield* all(input().opacity(0, 0.2), boxMoji().text("👷♀️⚙️", 0.2));
yield* waitFor(0.5);
const result = fibonacciFn(i);
yield* all(
output().opacity(1, 0.5),
output().text(result.toString(), 0.5),
output().position(right, 0.5),
);
yield* all(boxMoji().text("😴", 0.2));
yield* beginSlide("Output " + i);
}
yield* all(
boxMoji().opacity(0, 0.2),
block().fontSize(30, 1),
node().opacity(1, 1),
);
yield* beginSlide("Revealing");
});
|
