Problems with getting glyph outline with appendBezierPathWithGlyphs?

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I'm working with Objective-C++. I'm trying to get the path outline of a text using NSBezierPaths appendBezierPathWithGlyphs. The problem is: the output is rather nonsense :( What I've written: String str = Ascii8("test string"); int length = str.getLength(); NSFont* font = NSFont fontWithDescriptor: NSFontDescriptor fontDescriptorWithName:@"Times" size:20 textTransform: transform; NSTextStorage *storage = NSTextStorage alloc initWithString:toNSString(str); NSLayoutManager *manager = NSLayoutManager alloc init; NSTextContainer *container = NSTextContainer alloc init; storage addLayoutManager:manager; manager addTextContainer:container; NSGlyph* glyphs = new NSGlyphlength+1; manager getGlyphs:glyphs range:NSMakeRange(0, length); container release; manager release; storage release; NSBezierPath* path = NSBezierPath bezierPath; // If I don't do this I get an exception that currentPoint doesn't exist ... path moveToPoint: NSMakePoint(0, 0); path appendBezierPathWithGlyphs:glyphs count:length inFont:font; delete glyphs; // NSBezierPath -> DoublePath for (NSInteger i=0; I X, controlPoints0.

Y); } else if (el == NSLineToBezierPathElement) { printf("line to (%f, %f)\n", controlPoints0. X, controlPoints0. Y); } else if (el == NSCurveToBezierPathElement) { printf("cubic to (%f, %f) (%f, %f) (%f, %f)\n", controlPoints0.

X, controlPoints0. Y, controlPoints1. X, controlPoints1.

Y, controlPoints2. X, controlPoints2. Y); } else if (el == NSClosePathBezierPathElement) { printf("close\n"); } } For example for the letter 't' I get this output: move to (0.277832, 0.000000) move to (0.254395, 0.450195) line to (0.254395, 0.415039) line to (0.154785, 0.415039) line to (0.153809, 0.133789) cubic to (0.153809, 0.109049) (0.155924, 0.090332) (0.160156, 0.077637) cubic to (0.167969, 0.055176) (0.183268, 0.043945) (0.206055, 0.043945) cubic to (0.217773, 0.043945) (0.227946, 0.046712) (0.236572, 0.052246) cubic to (0.245199, 0.057780) (0.255046, 0.066569) (0.266113, 0.078613) line to (0.278809, 0.067871) line to (0.268066, 0.053223) cubic to (0.251139, 0.030436) (0.233236, 0,014323) (0.214355, 0.004883) cubic to (0.195475, -0.004557) (0.177246, -0.009277) (0.159668, -0.009277) cubic to (0.121256, -0.009277) (0.095215, 0.007812) (0.081543, 0.041992) cubic to (0.074056, 0.060547) (0.070312, 0.086263) (0.070312, 0.119141) line to (0.070312, 0.415039) line to (0.017090, 0.415039) cubic to (0.015462, 0.416016) (0.014242, 0.416992) (0.013428, 0.417969) cubic to (0.012614, 0.418945) (0.012207, 0.420247) (0.012207, 0.421875) cubic to (0.012207, 0.425130) (0.012939, 0.427653) (0.014404, 0.429443) cubic to (0.015869, 0.431234) (0.020508, 0.435384) (0.028320, 0.441895) cubic to (0.050781, 0.460449) (0.066976, 0.475504) (0.076904, 0.487061) cubic to (0.086833, 0.498617) (0.110189, 0.529134) (0.146973, 0.578613) cubic to (0.151204, 0.578613) (0.153727, 0.578288) (0.154541, 0.577637) cubic to (0.155355, 0.576986) (0.155762, 0.574544) (0.155762, 0.570312) line to (0.155762, 0.450195) close This looks really wrong for me!

C++ objective-c cocoa objective-c++ glyph link|improve this question edited Nov 21 '11 at 9:43tzot17k63367 asked Sep 11 '10 at 20:291521237.

It’s valid. Below is your code modified to output an SVG of the curve data, which appears correct (but upside down because the coordinate convention of SVG is different). Other than that, removing some random C++, and adding transform which is undefined in your extract, the only difference is that it correctly counts the number of glyphs with manager numberOfGlyphs.

In the test case, this makes no difference, but in general the glyph count isn’t the same as the length of the string. NSString *str = @"test string"; int length = str. Length; NSAffineTransform *transform = NSAffineTransform transform; NSFont* font = NSFont fontWithDescriptor: NSFontDescriptor fontDescriptorWithName:@"Times" size:20 textTransform: transform; NSTextStorage *storage = NSTextStorage alloc initWithString:str; NSLayoutManager *manager = NSLayoutManager alloc init; NSTextContainer *container = NSTextContainer alloc init; storage addLayoutManager:manager; manager addTextContainer:container; NSUInteger glyphCount = manager numberOfGlyphs; NSGlyph glyphsglyphCount; manager getGlyphs:glyphs range:NSMakeRange(0, glyphCount); container release; manager release; storage release; NSBezierPath* path = NSBezierPath bezierPath; path moveToPoint: NSMakePoint(0, 0); // If I don't do this I get an exception that currentPoint doesn't exist ... path appendBezierPathWithGlyphs:glyphs count:length inFont:font; printf("\n" "\n" "\n" "\tDebug dump\n" "\t\n DoublePath for (NSInteger i=0; i\n\n").

They are so small that I only saw some dots ... after scaling it with large factor I saw something … – 1521237 Sep 11 '10 at 22:19 Font size isn’t part of the glyph. You’ll need to scale your transform. – Ahruman Sep 12 '10 at 9:55 Thanks for help!

– 1521237 Sep 12 '10 at 11:16.

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