54 lines
2.0 KiB
TypeScript
54 lines
2.0 KiB
TypeScript
import { BalanceWeight, Facing, HandConnection, HandTo, PositionKind, SemanticPosition, handsInCircle } from "../interpreterCommon.js";
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import { Move } from "../libfigureMapper.js";
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import { LowLevelMove, SemanticAnimationKind } from "../lowLevelMove.js";
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import { Hand } from "../rendererConstants.js";
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import { ISingleVariantMoveInterpreter, LowLevelMovesForAllDancers, MoveInterpreter, SemanticPositionsForAllDancers, SingleVariantMoveInterpreter, moveInterpreters } from "./_moveInterpreter.js";
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export function balanceCircleInAndOut(move: Move, startPos: SemanticPosition, balanceBeats?: number): [LowLevelMove, LowLevelMove] {
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if (startPos.kind !== PositionKind.Circle) {
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throw "Balance circle must start in a circle, but starting at " + startPos;
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}
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balanceBeats ??= 4;
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const balancePartBeats = balanceBeats / 2;
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const holdingHandsInCircle: SemanticPosition = {...startPos,
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facing: Facing.CenterOfCircle,
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hands: handsInCircle,
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};
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const circleBalancedIn: SemanticPosition = {...holdingHandsInCircle,
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balance: BalanceWeight.Forward,
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};
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const balanceIn: LowLevelMove = {
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move,
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startBeat: 0,
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beats: balancePartBeats,
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startPosition: holdingHandsInCircle,
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endPosition: circleBalancedIn,
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movementPattern: { kind: SemanticAnimationKind.Linear },
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};
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const balanceOut: LowLevelMove = {...balanceIn,
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startBeat: balancePartBeats,
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startPosition: circleBalancedIn,
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endPosition: holdingHandsInCircle,
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};
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return [balanceIn, balanceOut];
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}
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class BalanceTheRingSingleVariant extends SingleVariantMoveInterpreter<BalanceTheRing, "balance the ring"> {
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moveAsLowLevelMoves(): LowLevelMovesForAllDancers {
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return this.handleCircleMove(({ startPos }) => balanceCircleInAndOut(this.move, startPos));
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}
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}
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class BalanceTheRing extends MoveInterpreter<"balance the ring"> {
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buildSingleVariantMoveInterpreter(startingPos: SemanticPositionsForAllDancers): ISingleVariantMoveInterpreter {
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return new BalanceTheRingSingleVariant(this, startingPos);
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}
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}
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moveInterpreters.set("balance the ring", BalanceTheRing);
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