antialiasing

I have tried using the method drawOval with equal height and width but as the diameter increases the circle becomes worse looking. What can I do to have a decent looking circle no matter the size. How would I implement anti-aliasing in java or some other method. Brandon Yarbrough As it turns out, Java2D (which I'm assuming is what you're using) is already pretty good at this! There's a decent tutorial here: http://www.javaworld.com/javaworld/jw-08-1998/jw-08-media.html The important line is: graphics.setRenderingHint(RenderingHints.KEY_ANTIALIASING, RenderingHints.VALUE_ANTIALIAS_ON); you can

Many Java Apps don't use anti-aliased fonts by default, despite the capability of Swing to provide them. How can you coerce an arbitrary java application to use AA fonts? (both for applications I'm running, and applications I'm developing) If you have access to the source, you can do this in the main method: // enable anti-aliased text: System.setProperty("awt.useSystemAAFontSettings","on"); or, (and if you do not have access to the source, or if this is easier) you can simply pass the system properties above into the jvm by adding these options to the command line: -Dawt

Normally, you'd use something like: glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA); glEnable(GL_BLEND); glEnable(GL_LINE_SMOOTH); glLineWidth(2.0f); glVertexPointer(2, GL_FLOAT, 0, points); glEnableClientState(GL_VERTEX_ARRAY); glDrawArrays(GL_LINE_STRIP, 0, num_points); glDisableClientState(GL_VERTEX_ARRAY); It looks good in the iPhone simulator, but on the iPhone the lines get extremely thin and w/o any anti aliasing. How do you get AA on iPhone? One can achieve the effect of anti aliasing very cheaply using vertices with opacity 0. Here's an image example to explain: Comparison with AA:

How to turn on the anti-aliasing on an canvas . The following code doesn't draw a smooth line: var context = mainCanv.getContext("2d"); if (context) { context.moveTo(0,0); context.lineTo(100,75); context.strokeStyle = "#df4b26"; context.lineWidth = 3; context.stroke(); } Gaurav Anti-aliasing cannot be turned on or off, and is controlled by the browser. Can I turn off antialiasing on an HTML <canvas> element? You may translate canvas by half-pixel distance. ctx.translate(0.5, 0.5); Initially the canvas positioning point between the physical pixels. I haven't needed to turn on anti-alias because

Similary to " css transform, jagged edges in chrome ", same occurs with Firefox on 3D transforms, eg: http://jsfiddle.net/78d8K/5/ (<- remember: Firefox ) This time, backface-visibility doesn't help :( Any idea? Edited answer: (after comments) "Workaround", add a transparent outline attribute: outline: 1px solid transparent; Tested on Firefox 10.0.2 Windows 7: http://jsfiddle.net/nKhr8/ Original answer: (background-color dependent) "Workaround", add a border attribute with the same color of your background (white this case): border: 1px solid white; Tested on Firefox 10.0.2 Windows 7: http:/