Re: [JAVA2D] Poor quality rotated text
I tested image rotation with bicubic interpolation. The results with nearest neighbour are terrible, but not a surprise. [Message sent by forum member 'mthornton' (mthornton)] http://forums.java.net/jive/thread.jspa?messageID=262431 === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
Re: [JAVA2D] Poor quality rotated text
Just a suggestion about techniques - make sure you use some sort of interpolation filtering hint when you try to rotate an image like this. The default algorithm NEAREST_NEIGHBOR is the fastest, but you'd get better quality with BILINEAR filtering. I'm not sure that BICUBIC (slower still) would be necessary for this application. http://java.sun.com/javase/6/docs/api/java/awt/RenderingHints.html#KEY_INTERPOLATION Having said that, I wouldn't expect any better quality than rotating the outline (but YMMV), so if you are happy with the current solution of rotating the outline (quality and performance) then I'd say stick with that... ...jim [EMAIL PROTECTED] wrote: I think this is a consequence of trying to position each glyph at the closest point its projection on to the theoretical baseline on a relatively low-res device. Indeed. I get very nicely rendered characters with odd looking positions. printer resolutions. Whilst rotating an image would help the baseline I don't think you'd be happy with the appearance of the glyphs. True. I wrote a little test program and the glyph quality is worse. Overall the effect is a little better, at least to my eyes. I was going to try it with a higher resolution image, but will instead try ... Your best option for quality is likely to get the outline of the text Thanks very much I will try that approach. Mark [Message sent by forum member 'mthornton' (mthornton)] http://forums.java.net/jive/thread.jspa?messageID=262249 === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
Re: [JAVA2D] Poor quality rotated text
and I guess I'd go for the two girls at the beach for the review, continuing the theme. === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
Re: [JAVA2D] Poor quality rotated text
I can now confirm that rotating the outline produces excellent results. Thanks. [Message sent by forum member 'mthornton' (mthornton)] http://forums.java.net/jive/thread.jspa?messageID=262257 === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
Re: [JAVA2D] Poor quality rotated text
> I think this is a consequence of trying to position > each glyph at the > closest point its projection > on to the theoretical baseline on a relatively > low-res device. Indeed. I get very nicely rendered characters with odd looking positions. > printer resolutions. Whilst rotating an image would > help the baseline I > don't think you'd be > happy with the appearance of the glyphs. True. I wrote a little test program and the glyph quality is worse. Overall the effect is a little better, at least to my eyes. I was going to try it with a higher resolution image, but will instead try ... > Your best option for quality is likely to get the > outline of the text Thanks very much I will try that approach. Mark [Message sent by forum member 'mthornton' (mthornton)] http://forums.java.net/jive/thread.jspa?messageID=262249 === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
Re: [JAVA2D] Poor quality rotated text
I think this is a consequence of trying to position each glyph at the closest point its projection on to the theoretical baseline on a relatively low-res device. I suspect it would look fine at printer resolutions. Whilst rotating an image would help the baseline I don't think you'd be happy with the appearance of the glyphs. Your best option for quality is likely to get the outline of the text and use Graphics2d.fill(Shape). You'll also want to set ANTIALIAS_ON (that's the graphics AA flag not the text one since here you are rendering a shape, not a text primitive). The most robust way to get the outline of the text is by calling TextLayout.getOutline(..); -phil. [EMAIL PROTECTED] wrote: When rotated at some angles the position of characters relative to the baseline is a bit erratic (by a pixel or so). This still occurs with text antialiassing and/or fractional metric hints enabled. I'm using jre6_u04. I was wondering if it would be better to render the text (horizontally) into a bitmap (possibly at higher resolution) and then rotate and draw the resulting bitmap. Performance is not a great concern as the result is cached. Any suggestions? [Message sent by forum member 'mthornton' (mthornton)] http://forums.java.net/jive/thread.jspa?messageID=262205 === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help". === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
[JAVA2D] Poor quality rotated text
When rotated at some angles the position of characters relative to the baseline is a bit erratic (by a pixel or so). This still occurs with text antialiassing and/or fractional metric hints enabled. I'm using jre6_u04. I was wondering if it would be better to render the text (horizontally) into a bitmap (possibly at higher resolution) and then rotate and draw the resulting bitmap. Performance is not a great concern as the result is cached. Any suggestions? [Message sent by forum member 'mthornton' (mthornton)] http://forums.java.net/jive/thread.jspa?messageID=262205 === To unsubscribe, send email to [EMAIL PROTECTED] and include in the body of the message "signoff JAVA2D-INTEREST". For general help, send email to [EMAIL PROTECTED] and include in the body of the message "help".
