Just create a new BufferedImage with transparency, then paint the other two images (with full or semi-transparency) on it. This is how it will look like: Sample code (images are called ‘image.png’ and ‘overlay.png’): File path = … // base path of the images // load source images BufferedImage image = ImageIO.read(new File(path, “image.png”)); BufferedImage … Read more
You can set background color of view to the UIColor with alpha, and not affect view.alpha: view.backgroundColor = UIColor(white: 1, alpha: 0.5) or view.backgroundColor = UIColor.red.withAlphaComponent(0.5)
imagealphablending( $targetImage, false ); imagesavealpha( $targetImage, true ); did it for me. Thanks ceejayoz. note, the target image needs the alpha settings, not the source image. Edit: full replacement code. See also answers below and their comments. This is not guaranteed to be be perfect in any way, but did achieve my needs at the … Read more
colorWithAlphaComponent: did the trick. So what I had to do was: self.mylabel.backgroundColor = [self.myLabel.backgroundColor colorWithAlphaComponent:0.3];
You were on the right track. IrfanView sets the background for transparency the same as the viewing color around the image. You just need to re-open the image with IrfanView after changing the view color to white. To change the viewing color in Irfanview go to: Options > Properties/Settings > Viewing > Main window color
It’s easier than the other response. There is an xml value alpha that takes double values. android:alpha=”0.0″ thats invisible android:alpha=”0.5″ see-through android:alpha=”1.0″ full visible That’s how it works.
The accepted answer to export to JPG, then back to PNG is not recommended. It’s an extra step in the process (2 exports) JPG is lossy, so you will lose some image data Here’s a super fast and easy way to do this without the extra export or saving to (lossy) JPG: Using Preview app … Read more
If you want a transparent background in three.js, you need pass in the alpha parameter to the WebGLRenderer constructor. var renderer = new THREE.WebGLRenderer( { alpha: true } ); You can leave the clear color at the default value. renderer.setClearColor( 0x000000, 0 ); // the default three.js r.71
The site documentation gives the answer: background: fade(@blue, 20%); The function name is fade not alpha according to that document.
I am also looking for an answer to this question, (to clarify, I want to be able to draw an image with user defined opacity such as how you can draw shapes with opacity) if you draw with primitive shapes you can set fill and stroke color with alpha to define the transparency. As far … Read more