I finished the course “Corso completo di Illustrator: da principiante ad esperto” held by Alessandro Cuoghi on the Udemy platform. The course deals with different aspects of vector graphics with Illustrator. Through various examples, the main tools are analyzed, providing a solid practical basis. This course allowed me to perfect the skills I already had on Adobe Illustrator software by expanding the possible application scenarios.

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The course starts from the basics, dealing with interface, shortcuts and basic commands. Subsequently, several examples follow in order to resume the basic commands and learn more and more. Clearly this software does not start in a few hours but by gradually preceding it it is possible to assimilate all the information and become more and more agile. It won’t be important to know where all the Illustrator buttons are, but to know which ones and when to use them to get the result we want.

Particularly:

• Creation of vector projects for both web and print.
• Tools and techniques to better use Illustrator.
• Setting up a business card from scratch, folding, large format prints.
• Vector object database to be faster.
• Creating any vector object without knowing how to draw.
• Approaching online printing.
• Learn the basics of designing the graphics of a multi-device web page

## Vector graphics

Vector graphics is a technique for the representation of digitally generated images in which a set of geometric primitives are exploited. That is, the elementary geometric elements are used to represent the image by assigning their coordinates. Unlike raster graphics where a chromatic contribution to each element is associated with a predetermined grid of pixels, the definition is purely mathematical and this allows various advantages.

• The shapes are modeled with mathematical calculations and can be enlarged / reduced without loss of definition
• However, large images take up very little disk size
• The number of colors can be easily increased
• They can be easily converted to raster

The simplest transformation is uniform scaling along the coordinate axes:

\operatorname{scale}\left(s_x,s_y\right)=\begin{bmatrix}s_x&0\\0&s_y\end{bmatrix} \\\:\\
\begin{bmatrix}s_x&0\\0&s_y\end{bmatrix} \begin{bmatrix}x\\y \end{bmatrix}=\begin{bmatrix}s_xx\\ s_yy\end{bmatrix}  \\\:\\
\operatorname{scale}\left(0.5,0.5\right)=\begin{bmatrix}0.5&0\\0&0.5\end{bmatrix}