Vector graphics
by Bryan Kilgallin

Window frost
I live in the southern part of the globe. In this hemisphere, June falls during winter. Consequently, for that month, my digital media group selected the theme "frost". On 6 June 2024, I completed this piece artwork. The reference photo was obtained online. I created the artwork by layering tones and shapes.

Vector graphics are mathematical representations of images. They are composed of fundamental geometric elements. Points and straight lines are the most basic Geometric primitives.
More advanced ones are:

To create and edit vector graphics, I use the application Inkscape. This software creates images in Scalable Vector Graphics (SVG) format. That incorporates shapes, paths, text, and styles.
Styles are:

Commands define a primitive, specify coordinates, and set additional properties.
Basic commands are:

Well-designed vector graphics make clean illustrations. An advantage of vector graphics is that simple images have a small file size. That makes them efficient to store and transfer. And the ability to scale without losing quality, makes this format ideal for printing, which may require high quality. One file can be used for formats ranging from business card to banner.

Here are some of my vector artworks. I entered the one above in an exhibition. The images are listed chronologically; the most recent is last.


Cafe interior
Urban Sketchers Canberra visited the Canberra Museum & Gallery. During this, I found a suitable location for my digital art. Because my equipment needs both a power source and protection from glare. So I positioned myself in the closed cafe, strategically *facing the bar.
I finished the above artwork on 13 September, 2024.
Graffiti on the theme of deadlines
For my art club's upcoming exhibition, its digital media group explored the theme 'Deadlines'. This focused on the psychological pressure and creative tension of preparing for a show. My above conceptual artwork captures the essence of this theme. It examines internal and external pressures. I completed it on 20 September 2024.
World Naked Bike Ride participant
My art group's monthly theme was 'Exhibition/Exhibitionism'. For this, I created a nude portrait. The subject had been a volunteer assisting at the 2009 World Naked Bike Ride. That event aimed to highlight cyclists' vulnerability.
I finished this artwork on 6 November, 2024.
Scott's Crossing
On 12 January 2025, I participated in an Urban Sketchers Canberra field excursion. The locale was Canberra City, in a mall called Scott's Crossing.
On 15 March 2025, I finished my above artwork. My artistic style looks like a collage of objects.
Technical drawing of a USB dongle and ports
The diagram above explains how to connect a mouse to a smart TV.
I completed this artwork on 5 April 2025.
Schrödinger's cat
For May's theme, my digital media group had 'May...'. I interpreted it as 'maybe'. By 10 May 2025, I created an artwork inspired by that idea. This depicted the Schrödinger's cat paradox. The image is shown above.
Traced and filtered fossil leaves
My digital media group chose the theme 'lasting impressions', which made me think of fossils. To illustrate this, I auto-traced my photo of fossil leaves. They were from the late Permian period, about 254 million years old. I then added a sandy backdrop to evoke their natural environment, and applied a filter-effect, to enhance the visual impact.
I finished my above artwork on 8 June, 2025.
Greyscale, RGB & CMYK gradients
I was impressed by a pastel artist's presentation.
So I emulated such hues, layering gradients, both radial and linear. The first, radial, gradient was greyscale. For the later, linear gradients, I used colour models. I applied a red, green, and blue (RGB) gradient vertically. Then I added a cyan, magenta, yellow and black (CMYK) gradient horizontally.
I finished the above artwork on 16 June, 2025.