gradient

问题 On tableView's cells, I'm trying to define a gradient with the following Swift code: func tableView(tableView: UITableView!, cellForRowAtIndexPath indexPath: NSIndexPath!) -> UITableViewCell! { var cell:UITableViewCell = self.tableView?.dequeueReusableCellWithIdentifier("cell") as UITableViewCell cell.backgroundColor=UIColor.clearColor() let gradient : CAGradientLayer = CAGradientLayer() var arrayColors:Array<AnyObject> = [UIColor.blackColor().CGColor, UIColor.whiteColor().CGColor] gradient

问题 I'm trying to get some text to have a gradient colour, but I haven't a clue how. I'm trying to get it like this: The only thing I have tried is -webkit-mask , but I couldn't get that working how I wanted it to. The other thing would be -webkit-gradient in the color property - is that possible? Cross browser compatibility is fairly important, but not the end of the world. I'd prefer the text to be a solid colour in IE than to convert the entire thing into an image (there is quite a bit of text

问题 in my css file I have gradient rule, like this: background-image:linear-gradient(to right, #FF0000 0%, #00FF00 20px, rgb(0, 0, 255) 100%); I want to get all parts of this string. Expected output is: linear-gradient to right #FF0000 0%, #00FF00 20px, rgb(0, 0, 255) 100% it was too difficult for me to work on whole string so I decided to split it into parts. linear-gradient .*gradient[^\(]? colors rgb ?\([ 0-9.%,]+?\)|#[0-9a-fA-F]{3,6}\s[0-9]{1,3}[%|px]|#[0-9a-fA-F]{3,6}|(aqua|black|blue

问题 Given a trained keras model I am trying to compute the gradient of the output with respect to the input. This example tries to fit the function y=x^2 with a keras model composed by 4 layers of relu activations, and compute the gradient of the model output with respect to the input. from keras.models import Sequential from keras.layers import Dense from keras import backend as k from sklearn.model_selection import train_test_split import numpy as np import tensorflow as tf # random data x = np

问题 EDIT 1 : In order to satisfy "Complete, Minimal And Verifiable" Example Requirement TL:DR; Storyboard doesn't animate at all. Why? I am attempting to create a storyboard which will animate the offsets of all the gradient stops within a gradient, shifting them from the left to the right. I'm certain this is just a stupid syntax or argument error or something someplace on my part but I can't find it. This is the XAML : <Window x:Class="GradientShifting.MainWindow" xmlns="http://schemas

问题 EDIT 1 : In order to satisfy "Complete, Minimal And Verifiable" Example Requirement TL:DR; Storyboard doesn't animate at all. Why? I am attempting to create a storyboard which will animate the offsets of all the gradient stops within a gradient, shifting them from the left to the right. I'm certain this is just a stupid syntax or argument error or something someplace on my part but I can't find it. This is the XAML : <Window x:Class="GradientShifting.MainWindow" xmlns="http://schemas

问题 I'm trying to render a circle with a radial gradient but I can't seem to figure it out. var bkgdGrad:Shape = new Shape(); bkgdGrad.graphics.beginGradientFill(GradientType.RADIAL, [0x0000FF, 0x00FF00], [1, 1], [0, 255],null,"pad"); bkgdGrad.graphics.drawCircle(0,0,r+200); bkgdGrad.graphics.endFill(); this.addChild(bkgdGrad); The above code renders a solid green circle for me. If I change the array after the colors to [1,0] (the alpha array) I get a transparent fill. I can't seem to get flash

问题 I am currently programming a little game using canvas. For the game I need some kind of fog which hides the most part of the map and only a small area around the player should be visible. Therfor I use a second canvas to overlay the one where the game takes place and fill it with a gradient (from transparent to black): function drawFog(){ fogc.clearRect(0,0,700,600); // Create gradient var grd=fogc.createRadialGradient(player.getPosX(),player.getPosY(),0,player.getPosX(),player.getPosY(),100)

问题 How can I make an image border as gradient. I googled a lot, but didn't find correct suggestion. Any one can help me... Any suggestion please... 回答1: This is an interesting one. I first thought that there should be a simple solution, using some Graphics#drawRoundRect call with the appropriate Paint , but it's not sooo simple. However, one solution is implemented in the following example: The image is painted as-it-is into a new image. Then the edges and corners are painted. These consist of

问题 How can I define an easily reusable base shape (or gradient, or corners) in XML? I have a dozen or so drawable gradients that will be the same other than the start and end colors. I was hoping to define the identical stuff somewhere else and have an XML file for each different gradient that only defined the start and end colors. Is that possible? This is the base: <?xml version="1.0" encoding="utf-8"?> <shape xmlns:android="http://schemas.android.com/apk/res/android" android:shape="rectangle"