I know the idea is to make the text somehow hard to read for the users but still they complain and I've seen how the control used here in stackoverflow doesn't have the dark circles contrasting with the text in recaptcha.
How can I replicate this?
Thanks.
You can't.
If you want more control over how the CAPTCHAs are generated, you may want to take a look at different library.
Related
![enter image description here][1]please I need some help, this should apparently be something very simple and basic to do, but maybe I'm missing something.
I'm quite newbie to Unity3d, I had no much problem with creating a somewhat flashy 2.D scene (I mean 2D with different layers in Z level), scripts, etc. But I'm having trouble to create a "UI Slider" object: when I create it, it just shows nothing on screen. How can I make it visible? I just need to create a very simple, plain slider whose value can be controlled at runtime by means of a script.
thanks.
Well.. since you give nothing to go on, I suggest that you take a look at a tutorial for the UI:
https://unity3d.com/learn/tutorials/modules/beginner/live-training-archive/using-the-ui-tools
If you have troubles after this tutorial, come back with an example of your problem to make people more willing to sacrifice their time in helping you.
Hope this is somewhat useful
Take a look at the Unity3D docs here.
http://docs.unity3d.com/Manual/script-Slider.html
It should have what you are looking for.
I'm a Graphic Designer.
I was wondering if it's possible for a programmer to code this website or I should redesign this?
Because I have doubts about how hard the header and footer are, and I think it's a really hard work for a programmer to code a website like this.
If it's not, please let me know then I will find a developer.
This is not impossible. It just takes a moment to think it through.
The footer can be made as a background image of the three colour splats which wraps three separate divs (Projects, Products, Contact Us). The header is a series of images absolutely positioned within a relative parent.
This is actually a very simple layout.
The design is bit complex and unusual but not impossible.
It's possible to convert this design in code with use of some script and css hacks mainly position and z-index based hacks
three.js comes with many useful controls, which cause camera movement in response to keyboard and mouse input.
They are all at https://github.com/mrdoob/three.js/blob/master/examples/js/controls and accessed in the code as e.g.THREE.OrbitControls .
However, I can't find any documentation or comments that says what situation to use what control for or what they are intended to do.
Can anyone point me to this information, or do I have to analyze the code to figure out if, for example, I prefer FlyControls to FirstPersonControls?
The documentation for the controls does exist, but it was deleted from the repository here. Seems like a bizarre thing to do, but there is an explanation of sorts here. I guess the docs were very incomplete anyway and it was easier to delete them than to finish them. :-p
The source code for most of the controls contains pretty decent comments. I know this isnt as good as proper documentation but it really helps to get a handle on how to set up the controls
The Controls are named by their purpose or the idea they implement. OrbitControls allow you to orbit around some kind of object. Same for Trackball-Controls although the trackball-scheme implies that the camera will rotate around without the up-Axis staying as it was like in orbit-controls. Fly and FPS-Controls are self-explanatory.
Just try the examples and you will see what the difference is. No need to analyse code. Just depends on what you want to achieve.
I've been looking around to see if there exists a good way to prevent viewers from using their right click options to download images that I upload to my website.
I know that people can look at the image url in the page source, and was wondering if you suggest a way to prevent them being taken, by disabling the save image option.
This is an unsolvable problem.
As long as you actually want people to see the images, you cannot prevent them from saving them via a number of methods (e.g. screenshots). All measures you might think of will just annoy your users, without actually preventing them from doing what they want anyway. Also consider that the people watching those images will have some interest in them (otherwise they would not watch them in the first place), so there we already have a motive for them to keep a copy.
The only way to reliably prevent people from saving the images is to never let them copy them onto their computers in the first place (and remember: showing something on another computer always entails making a copy).
One solution could be to invite people into a place where they can view the image on a screen which you control, and not let them take any pictures. Think of modern cinemas where security people with night sights watch the spectators and pull out those who might have been handling any camera like device.
If you want to make it even more difficult, do not use an IMG tag. Instead, define the image using CSS with the property 'background-image'. To make it even more tricky, define that property at runtime using JavaScript that was placed on the page using base64 encoding.
You can try this...
onload=function(){
document.oncontextmenu=function(){return false;}
}
This will disallow the operation of the context (right mouse button click) menu...
If a user knows what they're doing they can get around this, though.
I suggest not doing this. It's annoying and you're not actually protecting yourself.
If you must, jQuery makes it pretty easy to disable the right click menu:
$(document).ready(function(){
$('img').bind("contextmenu",function(){
return false;
});
});
Just make your images so ugly no one would want to take them.
Seriously, what are you worried about?
If you use the Microsoft Ajax Seadragon Deep Zoom viewer for you images then you can present your images as lots of overlapping tiles - a real pain to stick back together, difficulty depends on images size, but for hi-resolution images it makes 'printscreen' the only option for those wanting to steal stuff.
Incidentally the contextmenu thing works on divs better than images (things bubble) and you don't have to offend people by doing no click on the whole document.
To do it by class, e.g. with Prototype:
$$('.your-image-container-class').each(function(s) {s.oncontextmenu=function(){return false;}});
I've been admiring StackOverflow's default quilt-like profile pictures (which I notice are also on the Fail Blog) and am curious what program both are using to generate them.
But what I really want to know is: If you were to design the system to create default profile pictures, how would you do it?
I'm looking for ideas on what algorithm you'd use, as well as things like how you would related the image to the user, be it related to their username, or some portrayal of their progress (ie the image gets more complex, or larger, as they gain reputation).
FWIW, the default pictures are generated by gravatar, which is why you'll see them on more than this site.
It's called an Identicon. On Stackoverflow it Gravatar uses your IP address to generate the image.
This is an editorial, not necessarily an answer.
Those auto-generated avatars on this site come from a service (Gravatar) that focuses exclusively on providing avatars and is therefore the core of their business. For apps that aren't specifically intended to generate and display avatars, I would just go with an empty placeholder (like Facebook). It's a neat feature, but is it worth your development time when a simple placeholder would be just as effective?
A very good source of images would be flame fractals. They are rather computationally expensive, so simply sourcing them from a project like electric sheep or having them be rendered by the user's computer should be considered to offload the work.
Who wouldn't want default profile pictures like these?
alt text http://sheepserver.net/v2d6/gen/202/124809/icon.jpg alt text http://sheepserver.net/v2d6/gen/202/124805/icon.jpg alt text http://sheepserver.net/v2d6/gen/202/125373/i77.jpg alt text http://sheepserver.net/v2d6/gen/202/125431/i116.jpg
Use a Julia set or something like that and set the initial conditions to a hash of the user's email address.
I'd use a jpeg server tool (aspjpg or similar) to manipulate the image on load so it displays their badges within their profile pic.
In fact, using any tool to dynamically generate images is pretty cool. Applying some sort of 3d or flash technology to dynamically create images using random variables for eye spacing or facial structure would be pretty wicked as well.
But ya this is a weird question. hah!
I did something similar years back, I used POV-Ray to generate little 3D scenes with torusses (torii ?) and spheres. There were lots of parameters to tweak such as the position, size and colour of each object.
POV-Ray is a scriptable 3D render engine, you can find it here.
Unfortunately my images all looked too similar to each other. I love Gravatar's identicons as uses on this site. I think the symmetry helps and the shapes are unique enough that you can identify users fairly clearly.
In ruby there have a library http://github.com/swdyh/quilt to generate it!