来自字符串的CGPathRef [英] CGPathRef from string

问题描述

请怎样才能得到法国信的特定阿拉伯语的路径？我刚刚发现CTFontCreatePathForGlyph会像CGPathRef一样，但它将是文本的轮廓。

Please how can we get path of particular arabic of french letter ? I've just found out that CTFontCreatePathForGlyph will give CGPathRef like, but its will be the outline of text .

我需要这个真正的文本路径来显示文本绘图动画。 。

I need this real text path for showing a text drawing animation..

任何帮助请

推荐答案

你不需要我的路径完全转换为NSString。

You dont require ur path to be converted into NSString at all.

您可以按如下方式创建文本路径：

You can create the path for text as follows:

    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);

这是您创建路径的方式，示例代码请参考此链接。此代码是此示例项目的一部分。
希望这可以帮助你

This is how you create a path, for sample code please refer this link. This code is a part of this sample project. Hope this helps you

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