Most of you are aware (especially George
) that Kathy and I have been designing graphics for a lot of years now, and occasionally we like to share some of the work we do on the Forum. The graphics we show are appropriate to a particular ongoing topic, e.g. Remembrance Day, Easter, Christmas, etc., so we don't use the Forum as a showcase for our work (we have our own graphics web site for that)
Anyway, I recently came across a tutorial to design an 'Infinite Triangle' in Adobe Illustrator, which is a kind of optical illusion but a structure that could not be constructed in real life. I thought it would be nice to share this little 'conundrum' with you.
I prefer to design graphics in Vector format as much as possible, because they are scaleable up and down in size without losing quality. Normal graphics are in Bitmap (also known as Raster) format, and are usually saved as a
.jpg. Without getting into technicalities, vectors use mathematical formulas to calculate their design, whilst bitmaps use a series of coloured square blocks (or pixels). So when you enlarge a bitmap graphic you see what is referred to as 'jaggies' which are the jagged edges of the blocks, which are not as obvious when the graphic is small.
To fully appreciate a vector graphic, it must be saved in
.svg format (
scaleable
vector
graphic), but not all browsers will display them. If you save a vector graphic as a .jpg it will be converted to a bitmap graphic.
One simple way around this, which I use to show vectors to other people, is by creating a PDF document. This embeds all the correct formatting for the graphic, plus any fonts that I use are actually shown. If you don't have that particular font installed on your computer then you normally wouldn't see it - Windows would show a generic font to represent it instead.
As Adobe offer a PDF Reader for free, then anyone can read PDF documents. All you have to do is zoom in on the document to see the vector as big as you want, and all the lines and curves are completely smooth.
If you have computer software such as Adobe Photoshop Elements, Adobe Photoshop CS5, then you can create simple vector graphics yourself. Although I have both of these, Adobe Illustrator CS5 is the industry standard tool for creating vector graphics, which is what I use the most. The benefit of using vector graphics (for me anyway) is that you may at some point wish to make a certain graphic bigger for a particular project. Instead of having to design it again as a larger size, as you would in bitmap format, you just open it up and pull out the 'bounding box' around the image to the size you want. You can then resave that larger image in .jpg format to display in web pages, or on Forums, as the increased size quality has already been preserved.
Most of the time though I'll still show my final graphics as a .jpg, because I've already decided on the size I wish it to be viewed at.
Anyway, that's enough of the background information on the graphics, now to the actual 'Infinite Triangle'.
Below is the finished product saved as a bitmap image in
.jpg format.
If you wish to view the PDF document and experiment with enlarging the triangle to enormous proportions, then let me know.
You could then save the PDF to your own computer to view offline if you wish.
The credit for the excellent tutorial I followed to create this masterpiece goes here -
http://vector.tutsplus.com/tutorials/illustration/impossible-shape-illustrator/(I'm not a 'Premium Member' on this site so I couldn't use the supplied source files - I had to do everything from scratch. A good learning experience anyway
)
Enjoy
Laurie.