Sunset MathTable, created MTFontV2, MTFontMathTableV2 and MathImage, about to sunset MTMathImage

Sources/SwiftMath/MathBundle/MTFontV2.swift

@@ -0,0 +1,57 @@
+//
+//  File.swift
+//  
+//
+//  Created by Peter Tang on 15/9/2023.
+//
+
+import Foundation
+import CoreGraphics
+import CoreText
+
+extension MathFont {
+    public func mtfont(size: CGFloat) -> MTFontV2 {
+        MTFontV2(font: self, size: size)
+    }
+}
+public final class MTFontV2: MTFont {
+    let font: MathFont
+    let size: CGFloat
+    private lazy var _cgFont: CGFont = {
+        font.cgFont()
+    }()
+    private lazy var _ctFont: CTFont = {
+        font.ctFont(withSize: size)
+    }()
+    private lazy var _mathTab = MTFontMathTableV2(mathFont: font, size: size)
+    init(font: MathFont = .latinModernFont, size: CGFloat) {
+        self.font = font
+        self.size = size
+        
+        super.init()
+        
+        super.defaultCGFont = nil
+        super.ctFont = nil
+        super.mathTable = nil
+        super.rawMathTable = nil
+    }
+    override var defaultCGFont: CGFont! {
+        set { fatalError("\(#function): change to \(font.fontName) not allowed.") }
+        get { _cgFont }
+    }
+    override var ctFont: CTFont! {
+        set { fatalError("\(#function): change to \(font.fontName) not allowed.") }
+        get { _ctFont }
+    }
+    override var mathTable: MTFontMathTable? {
+        set { fatalError("\(#function): change to \(font.rawValue) not allowed.") }
+        get { _mathTab }
+    }
+    override var rawMathTable: NSDictionary? {
+        set { fatalError("\(#function): change to \(font.rawValue) not allowed.") }
+        get { fatalError("\(#function): access to \(font.rawValue) not allowed.") }
+    }
+    public override func copy(withSize size: CGFloat) -> MTFont {
+        MTFontV2(font: font, size: size)
+    }
+}