CGPathRef字符串

Question

請問我們如何才能獲得法文字母的特定阿拉伯文路徑？我剛剛發現CTFontCreatePathForGlyph會給CGPathRef一樣，但它將成爲文本的輪廓。

我需要這個真正的文本路徑顯示文本繪製動畫..

任何幫助，請

Answer 1

你不要求UR路徑將被轉換成的NSString可言。

如下您可以創建文本的路徑：

CTFontRef font = CTFontCreateWithName(CFSTR("Helvetica-Bold"), 72.0f, NULL); 
NSDictionary *attrs = [NSDictionary dictionaryWithObjectsAndKeys: 
         (id)font, kCTFontAttributeName, 
         nil]; 
NSAttributedString *attrString = [[NSAttributedString alloc] initWithString:@"Hello World!" 
                   attributes:attrs]; 
CTLineRef line = CTLineCreateWithAttributedString((CFAttributedStringRef)attrString); 
CFArrayRef runArray = CTLineGetGlyphRuns(line); 

// for each RUN 
for (CFIndex runIndex = 0; runIndex < CFArrayGetCount(runArray); runIndex++) 
{ 
    // Get FONT for this run 
    CTRunRef run = (CTRunRef)CFArrayGetValueAtIndex(runArray, runIndex); 
    CTFontRef runFont = CFDictionaryGetValue(CTRunGetAttributes(run), kCTFontAttributeName); 

    // for each GLYPH in run 
    for (CFIndex runGlyphIndex = 0; runGlyphIndex < CTRunGetGlyphCount(run); runGlyphIndex++) 
    { 
     // get Glyph & Glyph-data 
     CFRange thisGlyphRange = CFRangeMake(runGlyphIndex, 1); 
     CGGlyph glyph; 
     CGPoint position; 
     CTRunGetGlyphs(run, thisGlyphRange, &glyph); 
     CTRunGetPositions(run, thisGlyphRange, &position); 

     // Get PATH of outline 
     { 
      CGPathRef letter = CTFontCreatePathForGlyph(runFont, glyph, NULL); 
      CGAffineTransform t = CGAffineTransformMakeTranslation(position.x, position.y); 
      CGPathAddPath(letters, &t, letter); 
      CGPathRelease(letter); 
     } 
    } 
} 
CFRelease(line); 

這是你如何創建一個路徑，示例代碼，請參閱this link。此代碼是此示例項目的一部分。 希望這可以幫到你