If you want a ripple effect on a view you can use it. CATransition *animation = [CATransition animation]; [animation setDelegate:self]; [animation setDuration:2.0f]; [animation setTimingFunction:UIViewAnimationCurveEaseInOut]; [animation setType:@”rippleEffect” ]; [myView.layer addAnimation:animation forKey:NULL];
The bug occurs when drawImage() is called out of the bounds of the sourceImage. You have to double check that the source width and source height are always smaller or equal to the image’s width and height : So for the first if block : var sourceX = image.width/2; var sourceY = 0; var sourceWidth … Read more
When developing just for Windows I usually just use the ATL CImage class
Eventually it will be, using shaders. See the W3C Docs on Filters. At the moment, what is possible for instance is: -webkit-filter: grayscale; /*sepia, hue-rotate, invert….*/ -webkit-filter: brightness(50%); See David Walsh on CSS Filters Stackoverflow: apply a rose tint…: W3C Filter Effects 1.0 Docs – 38.2.5. Other uniform variables: the CSS shaders parameters Update: Adobe … Read more
You can use JavaScript to ‘merge’ them into one canvas, and convert that canvas to image. var c=document.getElementById(“myCanvas”); var ctx=c.getContext(“2d”); var imageObj1 = new Image(); var imageObj2 = new Image(); imageObj1.src = “1.png” imageObj1.onload = function() { ctx.drawImage(imageObj1, 0, 0, 328, 526); imageObj2.src = “2.png”; imageObj2.onload = function() { ctx.drawImage(imageObj2, 15, 85, 300, 300); var … Read more
Here is an even easier method that is available in iPhone 3.0 and up. Every View-based object has an associated layer. Each layer can have a corner radius set, this will give you just what you want: UIImageView * roundedView = [[UIImageView alloc] initWithImage: [UIImage imageNamed:@”wood.jpg”]]; // Get the Layer of any view CALayer * … Read more
Sorry for bringing up an old question, but I were solving the same problem today and found this page on MSDN: “Listing Parameters and Values for All Encoders”. I hope it might be useful to refer to it there. The article contains a sample program which outputs EncoderParameters supported by stock GDI+ image encoders, and … Read more
I know this is an old question and the OP found a workaround solution, but this will work if the images and canvas are already part of the HTML page. <img id=”img1″ src=”https://stackoverflow.com/questions/158750/imgfile1.png”> <img id=”img2″ src=”https://stackoverflow.com/questions/158750/imgfile2.png”> <canvas id=”canvas”></canvas> <script type=”text/javascript”> var img1 = document.getElementById(‘img1’); var img2 = document.getElementById(‘img2’); var canvas = document.getElementById(‘canvas’); var context = … Read more
I recommend using StdImageField from django-stdimage, it should handle all the dirty work for you. It’s easy to use, you just specify the dimensions of the resized image in the field definition: class MyModel(models.Model): image = StdImageField(upload_to=’path/to/img’, size=(640, 480)) Check out the docs — it can do thumbnails also.
I would recommend using Wand (explanations follows). I was looking for proper binding to ImageMagick library, that would: work error/problem free be regularly maintained and up to date allow nice objective Python But indeed python API (binding) has too many different (mostly discontinued) versions. After reading a nice historical overview by Benjamin Schweizer it has … Read more