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私はメモ作成アプリを作成しています。このアプリでは、線をベジェ曲線にしています。現時点では、whileループの外側で定義された行列に新しい値を入れようとするとエラーが発生します。私はダミー変数に入れられたときにそれ自身を試してみたところ、ループ内で動作します。私が2次元変数の値を置き換えるためにフォーマットを使うと、それはループ外で動作しますが、ループ内で両方のアクションを一緒にするとうまくいきません。swift- whileループで配列値の置換を伴うexc_bad_instruction(code = exc_i386_invop、subcode = 0x0)を取得
//: Playground - noun: a place where people can play
import UIKit
var x2 = 6.0
var y2 = 5.0
var x1 = 1.0
var y1 = 1.0
var p1x = 2.0
var p1y = 3.0
var B = 6.5
var Ba = 2.2
var percentall = Ba/B
var yall = 5.0
var xall = 1.0
var A = 4.0
var C = 5.0
var Ct = 0.0
var At = 0.0
var Aall = Int(A) * 10
var Call = Int(C) * 10
var thelistx = [[Double]](count: Call, repeatedValue: [Double](count: Call, repeatedValue: 0.0))
var thelisty = Array(count: Aall, repeatedValue: Array(count: Call, repeatedValue: 0.0))
var theAt = 0
var theCt = 0
while At <= A {
var Apercent = percentall * At
var Aend = y1 + At
var yslope = (A - At) * percentall + Aend
var lefty = (yslope - Apercent) * percentall + Apercent
var righty = (y2 - yslope) * percentall + yslope
while Ct <= C {
var Cpercent = percentall * Ct
var Cend = x2 - Ct
var xslope = (C - Ct) * percentall + Cend
var leftx = (xslope - x1) * percentall + x1
var rightx = (x2 - xslope) * percentall + xslope
thelistx [theAt] [theCt] = (rightx - leftx) * percentall + left
*********************Execution was interrupted, reason exc_bad_instruction (code=exc_i386_invop, subcode=0x0) ***************
thelisty [theAt] [theCt] = (righty - lefty) * percentall + lefty
Ct += 0.1
theCt += 1
}
At = At + 0.1
theAt += 1
}