import { segments } from './arc' ; const temp = [ 'l' , 0 , 0 , 0 , 0 , 0 , 0 , 0 ] ; function scale ( current , s ) { const c = ( temp [ 0 ] = current [ 0 ] ) ; if ( c === 'a' || c === 'A' ) { temp [ 1 ] = s * current [ 1 ] ; temp [ 2 ] = s * current [ 2 ] ; temp [ 6 ] = s * current [ 6 ] ; temp [ 7 ] = s * current [ 7 ] ; } else { for ( let i = 1 , n = current . length ; i < n ; ++ i ) { temp [ i ] = s * current [ i ] ; } } return temp ; } export function renderPath ( context , path , l , t , s ) { let current ; let previous = null ; let x = 0 ; let y = 0 ; let controlX = 0 ; let controlY = 0 ; let tempX ; let tempY ; let tempControlX ; let tempControlY ; if ( l == null ) { l = 0 ; } if ( t == null ) { t = 0 ; } if ( s == null ) { s = 1 ; } if ( context . beginPath ) { context . beginPath ( ) ; } for ( let i = 0 , len = path . length ; i < len ; ++ i ) { current = path [ i ] ; if ( s !== 1 ) { current = scale ( current , s ) ; } switch ( current [ 0 ] ) { case 'l' : x += current [ 1 ] ; y += current [ 2 ] ; context . lineTo ( x + l , y + t ) ; break ; case 'L' : x = current [ 1 ] ; y = current [ 2 ] ; context . lineTo ( x + l , y + t ) ; break ; case 'h' : x += current [ 1 ] ; context . lineTo ( x + l , y + t ) ; break ; case 'H' : x = current [ 1 ] ; context . lineTo ( x + l , y + t ) ; break ; case 'v' : y += current [ 1 ] ; context . lineTo ( x + l , y + t ) ; break ; case 'V' : y = current [ 1 ] ; context . lineTo ( x + l , y + t ) ; break ; case 'm' : x += current [ 1 ] ; y += current [ 2 ] ; context . moveTo ( x + l , y + t ) ; break ; case 'M' : x = current [ 1 ] ; y = current [ 2 ] ; context . moveTo ( x + l , y + t ) ; break ; case 'c' : tempX = x + current [ 5 ] ; tempY = y + current [ 6 ] ; controlX = x + current [ 3 ] ; controlY = y + current [ 4 ] ; context . bezierCurveTo ( x + current [ 1 ] + l , y + current [ 2 ] + t , controlX + l , controlY + t , tempX + l , tempY + t ) ; x = tempX ; y = tempY ; break ; case 'C' : x = current [ 5 ] ; y = current [ 6 ] ; controlX = current [ 3 ] ; controlY = current [ 4 ] ; context . bezierCurveTo ( current [ 1 ] + l , current [ 2 ] + t , controlX + l , controlY + t , x + l , y + t ) ; break ; case 's' : tempX = x + current [ 3 ] ; tempY = y + current [ 4 ] ; controlX = 2 * x - controlX ; controlY = 2 * y - controlY ; context . bezierCurveTo ( controlX + l , controlY + t , x + current [ 1 ] + l , y + current [ 2 ] + t , tempX + l , tempY + t ) ; controlX = x + current [ 1 ] ; controlY = y + current [ 2 ] ; x = tempX ; y = tempY ; break ; case 'S' : tempX = current [ 3 ] ; tempY = current [ 4 ] ; controlX = 2 * x - controlX ; controlY = 2 * y - controlY ; context . bezierCurveTo ( controlX + l , controlY + t , current [ 1 ] + l , current [ 2 ] + t , tempX + l , tempY + t ) ; x = tempX ; y = tempY ; controlX = current [ 1 ] ; controlY = current [ 2 ] ; break ; case 'q' : tempX = x + current [ 3 ] ; tempY = y + current [ 4 ] ; controlX = x + current [ 1 ] ; controlY = y + current [ 2 ] ; context . quadraticCurveTo ( controlX + l , controlY + t , tempX + l , tempY + t ) ; x = tempX ; y = tempY ; break ; case 'Q' : tempX = current [ 3 ] ; tempY = current [ 4 ] ; context . quadraticCurveTo ( current [ 1 ] + l , current [ 2 ] + t , tempX + l , tempY + t ) ; x = tempX ; y = tempY ; controlX = current [ 1 ] ; controlY = current [ 2 ] ; break ; case 't' : tempX = x + current [ 1 ] ; tempY = y + current [ 2 ] ; if ( previous [ 0 ] . match ( /[QqTt]/ ) === null ) { controlX = x ; controlY = y ; } else if ( previous [ 0 ] === 't' ) { controlX = 2 * x - ( tempControlX as number ) ; controlY = 2 * y - ( tempControlY as number ) ; } else if ( previous [ 0 ] === 'q' ) { controlX = 2 * x - controlX ; controlY = 2 * y - controlY ; } tempControlX = controlX ; tempControlY = controlY ; context . quadraticCurveTo ( controlX + l , controlY + t , tempX + l , tempY + t ) ; x = tempX ; y = tempY ; controlX = x + current [ 1 ] ; controlY = y + current [ 2 ] ; break ; case 'T' : tempX = current [ 1 ] ; tempY = current [ 2 ] ; controlX = 2 * x - controlX ; controlY = 2 * y - controlY ; context . quadraticCurveTo ( controlX + l , controlY + t , tempX + l , tempY + t ) ; x = tempX ; y = tempY ; break ; case 'a' : drawArc ( context , x + l , y + t , [ current [ 1 ] , current [ 2 ] , current [ 3 ] , current [ 4 ] , current [ 5 ] , current [ 6 ] + x + l , current [ 7 ] + y + t , ] ) ; x += current [ 6 ] ; y += current [ 7 ] ; break ; case 'A' : drawArc ( context , x + l , y + t , [ current [ 1 ] , current [ 2 ] , current [ 3 ] , current [ 4 ] , current [ 5 ] , current [ 6 ] + l , current [ 7 ] + t , ] ) ; x = current [ 6 ] ; y = current [ 7 ] ; break ; case 'z' : case 'Z' : context . closePath ( ) ; break ; } previous = current ; } } function drawArc ( context , x , y , coords ) { const seg = segments ( coords [ 5 ] , coords [ 6 ] , coords [ 0 ] , coords [ 1 ] , coords [ 3 ] , coords [ 4 ] , coords [ 2 ] , x , y ) ; seg . forEach ( ( bez ) => { context . bezierCurveTo ( bez [ 0 ] , bez [ 1 ] , bez [ 2 ] , bez [ 3 ] , bez [ 4 ] , bez [ 5 ] ) ; } ) ; }