import Animated , { tan } from "react-native-reanimated" ; const { add , multiply , cos , sin , divide } = Animated ; export type Vec4 = readonly [ Animated . Adaptable < number > , Animated . Adaptable < number > , Animated . Adaptable < number > , Animated . Adaptable < number > ] ; export type Matrix4 = readonly [ Vec4 , Vec4 , Vec4 , Vec4 ] ; type Transform3dName = "translateX" | "translateY" | "translateZ" | "scale" | "scaleX" | "scaleY" | "skewX" | "skewY" | "rotateZ" | "rotate" | "perspective" | "rotateX" | "rotateY" | "rotateZ" | "matrix" ; type Transformations = { [ Name in Transform3dName ] : Name extends "matrix" ? Matrix4 : Animated . Adaptable < number > ; } ; export type Transforms3d = ( Pick < Transformations , "translateX" > | Pick < Transformations , "translateY" > | Pick < Transformations , "translateZ" > | Pick < Transformations , "scale" > | Pick < Transformations , "scaleX" > | Pick < Transformations , "scaleY" > | Pick < Transformations , "skewX" > | Pick < Transformations , "skewY" > | Pick < Transformations , "perspective" > | Pick < Transformations , "rotateX" > | Pick < Transformations , "rotateY" > | Pick < Transformations , "rotateZ" > | Pick < Transformations , "rotate" > | Pick < Transformations , "matrix" > ) [ ] ; const exhaustiveCheck = ( a ) : never => { throw new Error ( `Unexhaustive handling for ${ a }` ) ; } ; export const identityMatrix4 = [ [ 1 , 0 , 0 , 0 ] , [ 0 , 1 , 0 , 0 ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const translateXMatrix = ( x ) : Matrix4 => [ [ 1 , 0 , 0 , x ] , [ 0 , 1 , 0 , 0 ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const translateYMatrix = ( y ) : Matrix4 => [ [ 1 , 0 , 0 , 0 ] , [ 0 , 1 , 0 , y ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const translateZMatrix = ( z ) : Matrix4 => [ [ 1 , 0 , 0 , 0 ] , [ 0 , 1 , 0 , 0 ] , [ 0 , 0 , 1 , z ] , [ 0 , 0 , 0 , 1 ] , ] ; const scaleMatrix = ( s ) : Matrix4 => [ [ s , 0 , 0 , 0 ] , [ 0 , s , 0 , 0 ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const scaleXMatrix = ( s ) : Matrix4 => [ [ s , 0 , 0 , 0 ] , [ 0 , 1 , 0 , 0 ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const skewXMatrix = ( s ) : Matrix4 => [ [ 1 , tan ( s ) , 0 , 0 ] , [ 0 , 1 , 0 , 0 ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const skewYMatrix = ( s ) : Matrix4 => [ [ 1 , 0 , 0 , 0 ] , [ tan ( s ) , 1 , 0 , 0 ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const scaleYMatrix = ( s ) : Matrix4 => [ [ 1 , 0 , 0 , 0 ] , [ 0 , s , 0 , 0 ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const perspectiveMatrix = ( p ) : Matrix4 => [ [ 1 , 0 , 0 , 0 ] , [ 0 , 1 , 0 , 0 ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , divide ( - 1 , p ) , 1 ] , ] ; const rotateXMatrix = ( r ) : Matrix4 => [ [ 1 , 0 , 0 , 0 ] , [ 0 , cos ( r ) , multiply ( - 1 , sin ( r ) ) , 0 ] , [ 0 , sin ( r ) , cos ( r ) , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const rotateYMatrix = ( r ) : Matrix4 => [ [ cos ( r ) , 0 , sin ( r ) , 0 ] , [ 0 , 1 , 0 , 0 ] , [ multiply ( - 1 , sin ( r ) ) , 0 , cos ( r ) , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; const rotateZMatrix = ( r ) : Matrix4 => [ [ cos ( r ) , multiply ( - 1 , sin ( r ) ) , 0 , 0 ] , [ sin ( r ) , cos ( r ) , 0 , 0 ] , [ 0 , 0 , 1 , 0 ] , [ 0 , 0 , 0 , 1 ] , ] ; export const dot4 = ( row , col ) => { return add ( multiply ( row [ 0 ] , col [ 0 ] ) , multiply ( row [ 1 ] , col [ 1 ] ) , multiply ( row [ 2 ] , col [ 2 ] ) , multiply ( row [ 3 ] , col [ 3 ] ) ) ; } ; export const matrixVecMul4 = ( m , v ) => [ dot4 ( m [ 0 ] , v ) , dot4 ( m [ 1 ] , v ) , dot4 ( m [ 2 ] , v ) , dot4 ( m [ 3 ] , v ) ] as const ; export const multiply4 = ( m1 , m2 ) => { const col0 = [ m2 [ 0 ] [ 0 ] , m2 [ 1 ] [ 0 ] , m2 [ 2 ] [ 0 ] , m2 [ 3 ] [ 0 ] ] as const ; const col1 = [ m2 [ 0 ] [ 1 ] , m2 [ 1 ] [ 1 ] , m2 [ 2 ] [ 1 ] , m2 [ 3 ] [ 1 ] ] as const ; const col2 = [ m2 [ 0 ] [ 2 ] , m2 [ 1 ] [ 2 ] , m2 [ 2 ] [ 2 ] , m2 [ 3 ] [ 2 ] ] as const ; const col3 = [ m2 [ 0 ] [ 3 ] , m2 [ 1 ] [ 3 ] , m2 [ 2 ] [ 3 ] , m2 [ 3 ] [ 3 ] ] as const ; return [ [ dot4 ( m1 [ 0 ] , col0 ) , dot4 ( m1 [ 0 ] , col1 ) , dot4 ( m1 [ 0 ] , col2 ) , dot4 ( m1 [ 0 ] , col3 ) , ] , [ dot4 ( m1 [ 1 ] , col0 ) , dot4 ( m1 [ 1 ] , col1 ) , dot4 ( m1 [ 1 ] , col2 ) , dot4 ( m1 [ 1 ] , col3 ) , ] , [ dot4 ( m1 [ 2 ] , col0 ) , dot4 ( m1 [ 2 ] , col1 ) , dot4 ( m1 [ 2 ] , col2 ) , dot4 ( m1 [ 2 ] , col3 ) , ] , [ dot4 ( m1 [ 3 ] , col0 ) , dot4 ( m1 [ 3 ] , col1 ) , dot4 ( m1 [ 3 ] , col2 ) , dot4 ( m1 [ 3 ] , col3 ) , ] , ] as const ; } ; export const processTransform3d = ( transforms ) => transforms . reduce ( ( acc , transform ) => { const key = Object . keys ( transform ) [ 0 ] as Transform3dName ; if ( key === "translateX" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , translateXMatrix ( value ) ) ; } if ( key === "translateY" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , translateYMatrix ( value ) ) ; } if ( key === "translateZ" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , translateZMatrix ( value ) ) ; } if ( key === "scale" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , scaleMatrix ( value ) ) ; } if ( key === "scaleX" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , scaleXMatrix ( value ) ) ; } if ( key === "scaleY" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , scaleYMatrix ( value ) ) ; } if ( key === "skewX" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , skewXMatrix ( value ) ) ; } if ( key === "skewY" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , skewYMatrix ( value ) ) ; } if ( key === "rotateX" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , rotateXMatrix ( value ) ) ; } if ( key === "rotateY" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , rotateYMatrix ( value ) ) ; } if ( key === "perspective" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , perspectiveMatrix ( value ) ) ; } if ( key === "rotate" || key === "rotateZ" ) { const value = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , rotateZMatrix ( value ) ) ; } if ( key === "matrix" ) { const matrix = ( transform as Pick < Transformations , typeof key > ) [ key ] ; return multiply4 ( acc , matrix ) ; } return exhaustiveCheck ( key ) ; } , identityMatrix4 ) ;