alpha

相关标签：javascript jquery android 多少钱 iPhone

Fastest way possible to validate a string to be only Alphas, or a given string set

I need the absoulute fastest way possible to validate an input string against a given rule. In this case lest say Alpha only characters.[详细]

2023-04-12 13:05 分类：问答
24 bit Alpha Channel in Base64_encode

So I am experimenting with using icons in my CSS using base64 encoded pngs. I have used http://www.motobit.com/util/base64-decoder-encoder.asp to convert them. However, the pngs开发者_开发问答 only ha[详细]

2023-04-12 05:25 分类：问答
opencv: how to change the transparency level of an image

Is it possible 开发者_JAVA技巧to change the transparency level of an IplImage (the alhpa channel)?I can do this using cvSet and setting all the values to a cvScalar, but that would change not only the[详细]

2023-04-11 20:33 分类：问答
Drawing textures with variable transparency

I am a moderately experienced C# developer, but I\'m new to XNA and graphics in general. I\'m making a 2D game and I\'m trying to draw a texture that partially transparent. The desired transparency va[详细]

2023-04-08 14:20 分类：问答
HTML5 Canvas - lines self-intersection with alpha-channel

Please look at the picture (sorry, new users can\'t insert an image directly into post). Lines ar开发者_开发技巧e drawn semi-transparent colors (alpha = 0.5).[详细]

2023-04-08 07:42 分类：问答
WPF alpha threshold

Is there any alpha threshold in WPF? I use brush #01000000 and on some computers it is non-transparent in regard to mouse hit testing (clicking on surface with this brush), but on some other computers[详细]

2023-04-06 16:57 分类：问答
How to create a UIView that contains 0 to 1 opacity value (alpha value) from bottom to top?

I want t开发者_运维知识库o create a UIView that contains gradually increasing opacity value in it. That is, the UIView\'s bottom will start with 0.0 as its alpha value and it should end with 1.0 at th[详细]

2023-04-06 14:35 分类：问答
IOS: set alpha in a UIImage

I have an UIImage and I want to set its alpha at 0.00 after 3 s开发者_运维百科econds... In my UIImage there is a picture that I want to immediately see when I go in a view, but after 3 second it must[详细]

2023-04-06 09:31 分类：问答
Alpha blending with multiple textures leaves colored border

Following problem: I have two textures and I want to combine these two into a new texture. Thus, one texture is used as background, the other will be overlaid. The overlay texture is g开发者_如何学Cet[详细]

2023-04-05 02:11 分类：问答
Memory/performance trading question? [closed]

As it currently stands, this question is not a good fit for our Q&A format. We expect answers to be supported by facts, references,or expertise, but this question will likely solicit debate, a[详细]

2023-04-04 16:14 分类：问答