Animation is a series of still drawings that, when viewed in rapid succession, gives the impression of a moving picture. The word animation derives from the Latin words anima meaning life, and animate meaning to breathe life into. Throughout history, people have employed various techniques to give the impression of moving pictures. Cave drawings depicted animals with their legs overlapping so that they appeared to be running. The properties of animation can be seen in Asian puppet shows, Greek bas-relief, Egyptian funeral paintings, medieval stained glass, and modern comic strips.In 1640, a Jesuit monk named Althanasius Kircher invented a 'magic lantern' that projected enlarged drawings on a wall.
A fellow Jesuit, Gaspar Schott, developed this idea further by creating a straight strip of pictures, a sort of early filmstrip, that could be pulled across the lantern's lens. Schott further modified the lantern until it became a revolving disk. A century later, in 1736, a Dutch scientist named Pieter Van Musschenbroek created a series of drawings of windmill vanes that, when projected in rapid succession, gave the illusion of the windmill circling around and around.The magic lantern became a popular form of entertainment. Traveling entertainers, visiting the villages and towns of Europe, included it in their shows. In London, the Swiss-born physician and scholar Peter Mark Roget, most famous for compiling the Thesaurus of English Words and Phrases, was fascinated by the scientific phenomenon at play and wrote an essay entitled 'Persistence of Vision with Regard to Moving Objects' that was widely read and used as a basis for subsequent inventions.
One of the first was the thaumatrope, developed in the 1820s by John Paris, also an English doctor. The thaumatrope was simply a small disk with a different image drawn on either side.
Strings were knotted onto two edges so that the disk could be spun. As the disk twirled around, the two images appeared to blend. For example, a monkey on one side appeared to sit inside the cage on the opposite side.The next major innovation was the phenakistoscope, created by Joseph Plateau, a Belgian physicist and doctor. Plateau's contribution was a flat disk perforated with evenly spaced slots.
Figures were drawn around the edges, depicting successive movements. A stick attached to the back allowed the disk to be held at eye level in front of a mirror. The viewer then spun the disk and watched the reflection of the figures pass through the slits, once again giving the illusion of movement. Free Animated Wallpapers For Windows 7.
If you're like most users, you regularly change your desktop wallpaper to keep your computing environment fresh. Of course, modifying the desktop wallpaper is not the most high-tech endeavor an IT professional is likely to perform, but it can provide a moment of reprieve during the busy day. If you like to indulge in a bit of wallpaper whimsy now and then, chances are that you'll really enjoy this technique where you create a folder full of miniature tie-dye images and then set them up as stretched desktop wallpaper that changes every 10 seconds using Windows 7's desktop background slide-show feature. The result is a simulated animation that displays fantastic undulating images right on your. In this edition of the, I'll explain how to use Paint to create miniature tie-dye images.
I'll then show you how to set up an animated desktop using Windows 7's desktop background slide-show feature. Note: The desktop background slide-show feature is not available in Windows 7 Home Basic. Creating your tie-dye images The first thing you will do is create a folder full of miniature tie-dye images in Paint. I call them tie-dye because once you stretch the tiny images on your desktop, they resemble the patterns you see on.
To begin, click Start and type Paint in the Search text box. When you see Paint appear in the results list, just click it. Once the Paint application is up and running, pull down the main Paint menu and select the Properties command. In the resulting Image Properties dialog box, type a set of numbers in the Width and Height text boxes that roughly correspond to the aspect ratio of your monitor.
For example, if you have a widescreen LCD monitor with a 16:9 aspect ratio, type 15 in the Width text box and 9 in the Height text box, as shown in Figure A. The reason I chose 15 instead of 16 is that I have found that odd numbers allow you to create better patterns.
(I've also had luck using 9 Width and 5 Height.) Then, make sure the Pixels option is selected in the Units panel and click OK. Figure A Set the Width and Height in the Image Properties dialog box. If you have an older CRT monitor that has a 4:3 aspect ratio, you'll want to use a pair of odd numbers, such as 5 and 5 or 7 and 7, for the Width and Height. I've found that using 4 and 3 as the Width and Height are just too small to yield a nice image.
Now, in order to work with such a tiny image, you'll need to magnify the work area. Use the Zoom slider at the bottom of the Paint window and zoom in to 800%, as shown in Figure B, in order to make the small image as large as possible. You can also repeatedly press Ctrl-PageUp to activate zoom-in control.
Figure B Set Zoom to 800%. The next thing you'll want to do is turn on the Gridlines feature so that it will be easier to design your tie-dye image pixel by pixel. Choose the View tab and select the Gridlines check box, as shown in Figure C.
You can also press Ctrl-G to turn on Gridlines. Figure C Use the Gridlines feature to make it easier to design your image.
Now, choose the Home tab and use the Pencil tool to create a pattern using various colors. As you do so, try to imagine a tie-dye T-shirt pattern or just go to and search for tie-dye. Once you complete your first image, save the image as a PNG file in a separate folder inside your My Pictures folder. For example, I created the image shown in Figure D and saved it as TD1.png in the My Pictures Tie-DyeWP folder. Figure D Save your images as PNG files. You'll then save the same image again, but this time increment the number in the file name and alter the image slightly. You'll repeat these steps to create as many miniature tie-dye images as you wish.
For this example, I created the four images shown in Figure E. As you can see, the center is a bit different in each successive image. This slight alteration in each image is what will create the simulated animation. Figure E Each successive image is slightly different from its predecessor.
Setting up the desktop background slide show Once you have a set of tie-dye images, you can set up Windows 7's desktop background slide show. To begin, click Start and type Change desktop in the Search text box. When you see Change Desktop Background appear in the results list, just click it. When the Desktop Background window appears, click the Browse button and locate the folder containing your tie-dye images. Once you access the folder, click the Select All button, select Stretch from the Picture Position drop-down list, and select 10 Seconds in the Change Picture Every drop-down list.
In Figure F, you can see that I have selected the four images I saved in my Tie-DyeWP folder. Figure F Setting up the desktop background slide show is easy. At this point, click the Save Changes button. Then, click the Show Desktop button in the corner of the taskbar to minimize all open windows. Now, sit back and watch as the desktop background slide-show feature changes images.
Windows Animated Desktop Backgrounds
The nice gradual transition, along with the slightly modified images, creates a very interesting, animated desktop. In Figure G, you can see the first image in my desktop background slide show. See how the stretched image really looks like a tie-dye pattern? Figure G When stretched across the desktop, the miniature image looks like the pattern you'd see on a tie-dye T-shirt.
What's your take? Do you enjoy indulging in a bit a wallpaper whimsy now and then?
After learning about this animated tie-dye wallpaper technique, are you going to try it out? What do you think? As always, if you have comments or information to share about this topic, please take a moment to drop by the and let us hear from you. Also read:. (Gallery). Program calcul pensii militare.
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