Press n or j to go to the next uncovered block, b, p or k for the previous block.
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* ☱ Tae (Lake) Stance-Specific Animations
*
* Specialized idle, movement, and guard animations for the Tae (태/Lake) trigram.
* Embodies fluid joint manipulation and circular motion from Hapkido techniques.
*
* **Korean Martial Arts Context:**
* - **무술**: 합기도 관절기 (Hapkido Joint Manipulation)
* - **특성**: 유동적 관절기 (Fluid Joint Locks), 소원 기술 (Small Circle Techniques)
* - **철학**: 물처럼 흐르는 힘 (Flowing Power Like Water), 호수의 적응 (Lake's Adaptation)
* - **대표 기술**: 유수연타 (Flowing Water Strikes), 손목꺾기 (Wrist Lock), 팔꿈치 제어 (Elbow Control)
*
* @module systems/animation/catalogs/TaeStanceAnimations
* @category Animation
* @korean 태괘자세애니메이션
*/
import { BoneName, type SkeletalAnimation } from "@/types/skeletal";
import { MartialArtsAnimationBuilder } from "../builders/MartialArtsAnimationBuilder";
/**
* Anatomical safety constants for Tae (Lake) trigram animations
*
* These limits document safe physiological ranges for Korean martial arts movements.
* The constants serve as reference documentation validated by Korean martial arts experts
* and inform the design of all Tae animations to ensure realistic, safe joint mechanics.
*
* Note: These are documentation constants. The actual animation rotations are designed
* to stay well within these limits naturally through authentic Hapkido biomechanics.
*/
export const ANATOMICAL_LIMITS_TAE_STANCE = {
/**
* Maximum safe wrist flexion/extension: ±70° (±1.22 radians)
*
* Typical wrist range is 70-90° flexion/extension. We use 70° as a safe
* threshold for joint lock techniques without risking constraint violations.
*/
MAX_WRIST_BEND: 1.22, // ±70° in radians
/**
* Maximum safe elbow flexion: 145° (2.53 radians)
*
* Full elbow flexion is approximately 145-150°, allowing natural
* guard positions and joint manipulation techniques.
*/
MAX_ELBOW_FLEXION: 2.53, // 145° in radians
/**
* Maximum safe shoulder rotation: ±90° (±1.57 radians)
*
* Safe shoulder rotation range for circular Hapkido movements
* without risking impingement or constraint violations.
*/
MAX_SHOULDER_ROTATION: 1.57, // ±90° in radians
} as const;
// ═══════════════════════════════════════════════════════════════════════════
// ☱ TAE IDLE FLOWING ANIMATION (태괘 유동 자세)
// ═══════════════════════════════════════════════════════════════════════════
/**
* Tae Idle Flowing Animation
*
* **Korean**: 태괘 유동 자세 (Tae-gwae Yudong Jase)
* **Philosophy**: Embodying lake's fluidity through gentle circular breathing
*
* Characteristics:
* - Gentle circular shoulder movement
* - Relaxed mid-level guard position
* - Weight centered and stable
* - Hands open and ready to grasp
*
* Animation Cycle:
* - 0ms: Neutral position with mid-level guard
* - 1250ms: Circular shift (left shoulder forward, right back)
* - 2500ms: Return to neutral (complete cycle)
*
* @korean 태괘유동자세
* @duration 2500ms (2.5 second cycle)
* @category Idle Animation
*/
export const TAE_IDLE_FLOWING: SkeletalAnimation =
MartialArtsAnimationBuilder.create(
"tae_idle_flowing",
"태괘 유동 자세"
)
.asIdle(2.5, true)
// Keyframe 0ms: Neutral mid-level guard (baseline)
.at(0)
.rotate(BoneName.PELVIS, 0, 0, 0) // Neutral pelvis
.rotate(BoneName.SPINE_UPPER, 0, 0, 0) // Neutral spine
.rotate(BoneName.SHOULDER_L, -0.52, -0.17, 0.26) // -30°, -10°, 15° (mid-level flexible guard)
.rotate(BoneName.SHOULDER_R, -0.52, 0.17, -0.26) // -30°, 10°, -15°
.rotate(BoneName.ELBOW_L, 0, 0, -1.4) // -80° (flexed guard)
.rotate(BoneName.ELBOW_R, 0, 0, 1.4) // 80° (flexed guard)
.rotate(BoneName.WRIST_L, 0, 0, 0) // Neutral wrists
.rotate(BoneName.WRIST_R, 0, 0, 0)
.rotate(BoneName.HEAD, 0, 0, 0) // Head neutral, aware
.position(BoneName.PELVIS, 0, 0, 0)
.done<MartialArtsAnimationBuilder>()
// Keyframe 1250ms: Circular shift (subtle flowing motion)
.at(1.25)
.rotate(BoneName.SPINE_UPPER, 0, 0.09, 0) // 0°, 5° (slight rotation creating circular feel)
.rotate(BoneName.SHOULDER_L, -0.48, -0.09, 0.17) // -27.5°, -5°, 10° (left forward slightly)
.rotate(BoneName.SHOULDER_R, -0.57, 0.26, -0.17) // -32.5°, 15°, -10° (right back slightly)
.rotate(BoneName.ELBOW_L, 0, 0, -1.31) // -75° (slight extension)
.rotate(BoneName.ELBOW_R, 0, 0, 1.48) // 85° (slight flexion)
.rotate(BoneName.WRIST_L, 0, 0.09, 0) // 0°, 5° (gentle circular motion)
.rotate(BoneName.WRIST_R, 0, -0.09, 0) // 0°, -5°
.rotate(BoneName.PELVIS, 0, 0.05, 0) // 0°, 3° (subtle weight shift)
.position(BoneName.PELVIS, -0.02, 0, 0) // Minimal lateral shift
.done<MartialArtsAnimationBuilder>()
// Keyframe 2500ms: Return to neutral (complete cycle)
.at(2.5)
.rotate(BoneName.SPINE_UPPER, 0, 0, 0)
.rotate(BoneName.SHOULDER_L, -0.52, -0.17, 0.26)
.rotate(BoneName.SHOULDER_R, -0.52, 0.17, -0.26)
.rotate(BoneName.ELBOW_L, 0, 0, -1.4)
.rotate(BoneName.ELBOW_R, 0, 0, 1.4)
.rotate(BoneName.WRIST_L, 0, 0, 0)
.rotate(BoneName.WRIST_R, 0, 0, 0)
.rotate(BoneName.HEAD, 0, 0, 0)
.rotate(BoneName.PELVIS, 0, 0, 0)
.position(BoneName.PELVIS, 0, 0, 0)
.done<MartialArtsAnimationBuilder>()
.build();
// ═══════════════════════════════════════════════════════════════════════════
// ☱ TAE CIRCULAR SIDESTEP (원형 측면보)
// ═══════════════════════════════════════════════════════════════════════════
/**
* Tae Circular Sidestep Animation
*
* **Korean**: 원형 측면보 (Wonhyeong Cheukmyeonbo) - Circular Sidestep
* **Technique**: Arc-shaped lateral movement, hip-led
*
* Characteristics:
* - Circular arc path (not straight lateral)
* - Hip leads the movement
* - Maintains flexible guard throughout
* - Weight shifts smoothly
*
* Animation Phases:
* - 0-180ms: Weight shift and hip initiation
* - 180-400ms: Circular arc movement
* - 400-550ms: Landing and settling
*
* @korean 원형측면보
* @duration 550ms
* @category Movement Animation
*/
export const TAE_CIRCULAR_SIDESTEP: SkeletalAnimation =
MartialArtsAnimationBuilder.create(
"tae_circular_sidestep",
"원형 측면보"
)
.asMovement(0.55, false)
// Phase 1: Initial weight shift (0ms)
.at(0)
.rotate(BoneName.PELVIS, 0, -0.17, 0) // 0°, -10° (hip begins rotation)
.rotate(BoneName.KNEE_R, -0.26, 0, 0) // -15° (rear leg loads)
.rotate(BoneName.KNEE_L, -0.35, 0, 0) // -20° (lead leg ready)
.rotate(BoneName.SHOULDER_L, -0.52, -0.17, 0.26) // Guard maintained
.rotate(BoneName.SHOULDER_R, -0.52, 0.17, -0.26)
.rotate(BoneName.ELBOW_L, 0, 0, -1.4)
.rotate(BoneName.ELBOW_R, 0, 0, 1.4)
.position(BoneName.PELVIS, 0, 0, 0)
.done<MartialArtsAnimationBuilder>()
// Phase 2: Circular arc movement (275ms)
.at(0.275)
.rotate(BoneName.PELVIS, 0, -0.35, 0) // 0°, -20° (maximum hip rotation)
.rotate(BoneName.KNEE_R, -0.17, 0, 0) // -10° (rear leg extends)
.rotate(BoneName.KNEE_L, -0.44, 0, 0) // -25° (lead leg pushes)
.rotate(BoneName.SHOULDER_L, -0.52, -0.17, 0.26) // Guard stable
.rotate(BoneName.SHOULDER_R, -0.52, 0.17, -0.26)
.position(BoneName.PELVIS, -0.18, 0.02, -0.03) // Arc trajectory (lateral + slight back)
.done<MartialArtsAnimationBuilder>()
// Phase 3: Landing and settling (550ms)
.at(0.55)
.rotate(BoneName.PELVIS, 0, -0.26, 0) // 0°, -15° (settled)
.rotate(BoneName.KNEE_R, -0.26, 0, 0) // -15° (stable)
.rotate(BoneName.KNEE_L, -0.35, 0, 0) // -20° (grounded)
.rotate(BoneName.SHOULDER_L, -0.52, -0.17, 0.26) // Guard maintained
.rotate(BoneName.SHOULDER_R, -0.52, 0.17, -0.26)
.rotate(BoneName.ELBOW_L, 0, 0, -1.4)
.rotate(BoneName.ELBOW_R, 0, 0, 1.4)
.position(BoneName.PELVIS, -0.25, 0, 0) // Final lateral position
.done<MartialArtsAnimationBuilder>()
.build();
// ═══════════════════════════════════════════════════════════════════════════
// ☱ TAE DIAGONAL CIRCULAR APPROACH (대각선 원형 접근)
// ═══════════════════════════════════════════════════════════════════════════
/**
* Tae Diagonal Circular Approach Animation
*
* **Korean**: 대각선 원형 접근 (Daegakseon Wonhyeong Jeobgeun)
* **Technique**: 45° curved approach with hands extending
*
* Characteristics:
* - 45° diagonal angle with curved path
* - Hands extend forward for joint control
* - Hip rotation coordinates with step
* - Smooth weight transfer
*
* Animation Phases:
* - 0-233ms: Initial diagonal pivot
* - 233-500ms: Curved approach with extending hands
* - 500-667ms: Landing in engagement position
*
* @korean 대각선원형접근
* @duration 667ms
* @category Movement Animation
*/
export const TAE_DIAGONAL_CIRCULAR_APPROACH: SkeletalAnimation =
MartialArtsAnimationBuilder.create(
"tae_diagonal_circular_approach",
"대각선 원형 접근"
)
.asMovement(0.667, false)
// Phase 1: Initial diagonal pivot (0ms)
.at(0)
.rotate(BoneName.PELVIS, 0, -0.79, 0) // 0°, -45° (diagonal rotation)
.rotate(BoneName.KNEE_R, -0.35, 0, 0) // -20° (rear leg ready)
.rotate(BoneName.KNEE_L, -0.26, 0, 0) // -15° (lead leg ready)
.rotate(BoneName.SHOULDER_L, -0.44, -0.26, 0.35) // -25°, -15°, 20° (hands begin extending)
.rotate(BoneName.SHOULDER_R, -0.44, 0.26, -0.35) // -25°, 15°, -20°
.rotate(BoneName.ELBOW_L, 0, 0, -1.05) // -60° (extending)
.rotate(BoneName.ELBOW_R, 0, 0, 1.05) // 60° (extending)
.position(BoneName.PELVIS, 0, 0, 0)
.done<MartialArtsAnimationBuilder>()
// Phase 2: Curved approach with extending hands (361ms)
.at(0.361)
.rotate(BoneName.PELVIS, 0, -0.61, 0) // 0°, -35° (unwinding)
.rotate(BoneName.KNEE_R, -0.17, 0, 0) // -10° (extending)
.rotate(BoneName.KNEE_L, -0.44, 0, 0) // -25° (pushing)
.rotate(BoneName.SHOULDER_L, -0.35, -0.35, 0.44) // -20°, -20°, 25° (reaching)
.rotate(BoneName.SHOULDER_R, -0.35, 0.35, -0.44) // -20°, 20°, -25°
.rotate(BoneName.ELBOW_L, 0, 0, -0.7) // -40° (extending more)
.rotate(BoneName.ELBOW_R, 0, 0, 0.7) // 40° (extending more)
.position(BoneName.PELVIS, -0.2, 0.02, 0.2) // Curved diagonal path
.done<MartialArtsAnimationBuilder>()
// Phase 3: Landing in engagement position (667ms)
.at(0.667)
.rotate(BoneName.PELVIS, 0, -0.79, 0) // 0°, -45° (settled diagonal)
.rotate(BoneName.KNEE_R, -0.26, 0, 0) // -15° (stable)
.rotate(BoneName.KNEE_L, -0.35, 0, 0) // -20° (grounded)
.rotate(BoneName.SHOULDER_L, -0.26, -0.44, 0.52) // -15°, -25°, 30° (hands extended)
.rotate(BoneName.SHOULDER_R, -0.26, 0.44, -0.52) // -15°, 25°, -30°
.rotate(BoneName.ELBOW_L, 0, 0, -0.52) // -30° (ready to engage)
.rotate(BoneName.ELBOW_R, 0, 0, 0.52) // 30° (ready to engage)
.rotate(BoneName.WRIST_L, 0.09, 0, -0.09) // 5°, 0°, -5° (hands ready to grasp)
.rotate(BoneName.WRIST_R, 0.09, 0, 0.09) // 5°, 0°, 5°
.position(BoneName.PELVIS, -0.3, 0, 0.3) // Diagonal 45° position
.done<MartialArtsAnimationBuilder>()
.build();
// ═══════════════════════════════════════════════════════════════════════════
// ☱ TAE FLEXIBLE GUARD TRANSITION (호수 방어 전환)
// ═══════════════════════════════════════════════════════════════════════════
/**
* Tae Flexible Guard Transition Animation
*
* **Korean**: 호수 방어 전환 (Hosu Bangeo Jeonhwan) - Lake Guard Transition
* **Technique**: Transition into Tae's characteristic flexible mid-level guard
*
* Characteristics:
* - Smooth transition to mid-level guard
* - Hands at chest/solar plexus height
* - Elbows bent at 80° for flexibility
* - Weight evenly distributed
*
* Animation Phases:
* - 0-150ms: Begin transition
* - 150-300ms: Settle into Tae guard
*
* @korean 호수방어전환
* @duration 300ms
* @category Stance Animation
*/
export const TAE_FLEXIBLE_GUARD_TRANSITION: SkeletalAnimation =
MartialArtsAnimationBuilder.create(
"tae_flexible_guard_transition",
"호수 방어 전환"
)
.asStance(0.3, false)
// Phase 1: Begin transition (0ms)
.at(0)
.rotate(BoneName.SHOULDER_L, -0.44, -0.09, 0.22) // -25°, -5°, 12.5° (moving toward guard)
.rotate(BoneName.SHOULDER_R, -0.44, 0.09, -0.22) // -25°, 5°, -12.5°
.rotate(BoneName.ELBOW_L, 0, 0, -1.22) // -70° (transitioning)
.rotate(BoneName.ELBOW_R, 0, 0, 1.22) // 70° (transitioning)
.rotate(BoneName.PELVIS, 0, 0, 0) // Neutral pelvis
.position(BoneName.PELVIS, 0, 0, 0)
.done<MartialArtsAnimationBuilder>()
// Phase 2: Settle into Tae guard (300ms)
.at(0.3)
.rotate(BoneName.SHOULDER_L, -0.52, -0.17, 0.26) // -30°, -10°, 15° (Tae guard)
.rotate(BoneName.SHOULDER_R, -0.52, 0.17, -0.26) // -30°, 10°, -15°
.rotate(BoneName.ELBOW_L, 0, 0, -1.4) // -80° (Tae guard angle)
.rotate(BoneName.ELBOW_R, 0, 0, 1.4) // 80° (Tae guard angle)
.rotate(BoneName.WRIST_L, 0, 0, 0) // Neutral wrists
.rotate(BoneName.WRIST_R, 0, 0, 0)
.rotate(BoneName.KNEE_L, -0.26, 0, 0) // -15° (stable stance)
.rotate(BoneName.KNEE_R, -0.26, 0, 0) // -15° (stable stance)
.position(BoneName.PELVIS, 0, 0, 0)
.done<MartialArtsAnimationBuilder>()
.build();
// ═══════════════════════════════════════════════════════════════════════════
// EXPORTS
// ═══════════════════════════════════════════════════════════════════════════
/**
* Map of all Tae stance-specific animations for easy access
* @korean 태괘자세애니메이션맵
*/
export const TAE_STANCE_ANIMATIONS: ReadonlyMap<string, SkeletalAnimation> = new Map([
// Idle & Movement
["tae_idle_flowing", TAE_IDLE_FLOWING],
["tae_circular_sidestep", TAE_CIRCULAR_SIDESTEP],
["tae_diagonal_circular_approach", TAE_DIAGONAL_CIRCULAR_APPROACH],
// Stance Transitions
["tae_flexible_guard_transition", TAE_FLEXIBLE_GUARD_TRANSITION],
]);
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