Journal of Computer Sciences Institute

170-174

Authors: Piotr Wiertel, Maria Skublewska-Paszkowska

The paper concerns a comparison of SwiftUI and UIKit frameworks, used in iOS application development. SwiftUI was introduced in 2019 as a successor to UIKit as a main tool for creating application views. The purpose of this article is to compare the time performance of these two frameworks. Six testing applications have been implemented for the research, 2 in each framework. The software was complementary. The defined thesis "SwiftUI is more time efficient for applications with data collection and many filled text fields" was proved.

183-188

Authors: Kacper Szymanek, Beata Pańczyk

Modern web applications require flow of large amounts of data. To maintain order in code, a state manager was invented. With manager all data can be retrieved from and goes to one place. In this paper, four libraries for state management (NgRx, Ngxs, Redux, Vuex) were analyzed. Five criteria were used for the study: code metrics, solution structure, availability of ready-made implementations, community support, and performance testing. Results showed that there is not the best tool in every criterion, but when comparing the results obtained, the most universal solution is Vuex.

197-204

Authors: Karina Litwynenko, Małgorzata Plechawska-Wójcik

Reinforcement learning algorithms are gaining popularity, and their advancement is made possible by the presence of tools to evaluate them. This paper concerns the applicability of machine learning algorithms on the Unity platform using the Unity ML-Agents Toolkit library. The purpose of the study was to compare two algorithms: Proximal Policy Optimization and Soft Actor-Critic. The possibility of improving the learning results by combining these algorithms with Generative Adversarial Imitation Learning was also verified. The results of the study showed that the PPO algorithm can perform better in uncomplicated environments with non-immediate rewards, while the additional use of GAIL can improve learning performance.

210-216

Authors: Karol Moniuszko, Tomasz Szymczyk

This article concerns the study of immersion and human behavior while in a virtual reality (VR) world. It was compared with the behavior of participants during the traditional process of watching the image displayed on a LCD monitor. The study was conducted on the original test stand and the following vital signs were measured: pulse rate and stress. Additional data about the participants were collected by conducting a questionnaire concerning, among others, feelings and well-being during the game. The obtained results clearly show that VR gameplay provides much more emotions to the participants. It also makes them able to forget that they are in a virtual world regardless of whether they have used a VR generating device before or not. These results will determine the impact of immersion on gameplay appeal and player engagement.

225-229

Authors: Andrii Berkovskyy, Kostiantyn Voskoboinik, Marcin Badurowicz

This article compares the compilation speed of the SCSS and LESS preprocessor codes. Each preprocessor has its own syntax, which is transpiled into the CSS stylesheet language in the further development of the web page. These technologies serve the same purpose - to simplify and speed up the writing of page views, but are based on different programming languages - Ruby (SCSS) and JavaScript (LESS). For the purposes of the research, a test application was created, a series of tests was carried out on various sets of codes, the results were collected, which allowed to identify a preprocessor with a faster compilation speed, which turned out to be the LESS preprocessor.

237-242

Authors: Damian Sołtysiuk, Maria Skublewska-Paszkowska

The article discusses the issue of displaying graphics in web browsers. A couple of methods related to its display can be distinguished. The methods discussed are: SVG, HTML5 Canvas and the WebGl graphics engine. The research was done using a dedicated web application written in Angular and TypeScript language along with the help of Two.js library for displaying 2D graphics. After analyzing all the results it concluded that, guided by the rendering time of the elements, HTML5 Canvas turned out to be the best method. On the other hand, the best method which achieves the highest number of FPS for animation is WebGl.

247-253

Authors: Agata Ciekanowska, Adam Kiszczak-Gliński, Krzysztof Dziedzic

The main purpose of this work was to compare two game engines (Unreal Engine and Unity) in creating virtual exhibitions. The article is a scientific description of a test of their efficiency. For the needs of the research two identical test applications built on the basis of the same assets were created. Those applications enabled researchers to examine and compare the efficiency of engines in question, as well as familiarizing themselves with the workflow on each platform. The comparative analysis of gathered data let more effective solution to emerge, which happens to be Unity engine.