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In dieser Arbeit wird das Echtzeitrendering von Wolken von der Theorie bis hin zur Entwicklung derselben behandelt. Dabei sollen die visuellen Eigenschaften der Wolken sowie die unterschiedliche Wolkentypen simuliert werden. Dabei ist die Berechnung der Beleuchtung essentiell für ein glaubwürdiges Ergebnis. Die Rendertechniken nutzen dabei unterschiedliche Noise-Texturen; für die Modulierung der Wolken sind es hauptsächlich Perlin- und Perlin-Worley-Texturen. Das Rendern der Wolken wird per Compute-Shader durchgeführt um die Echtzeitfähigkeit zu gewährleisten. Um die Performance zu steigern, werden Temporal Reprojektion und andere Optimierungstechniken angewendet.
In der Computergrafik stellte die Berechnung von Reflexionen lange ein
Problem dar. Doch mit der ständigen Weiterentwicklung der Hardware
und Vorstellung neuer Verfahren ist eine realitätsnahe,
echtzeitfähige(durchschnittlich 60 FPS) Berechnung von Reflexionen möglich. In der folgenden Ausarbeitung werden verschiedene Reflexionsverfahren vorgestellt. Alle mathematischen und physikalischen Grundlagen werden gegeben, um die Algorithmen nachvollziehen zu können. Da eine Reflexion immer das Abtasten eines reflektierten Vektors bedeutet, werden zwei verschiedene Abtastungsverfahren für blickabhängige Reflexionen vorgestellt und anschließend implementiert. Zuletzt werden die Verfahren auf Basis von Qualität und Performance gegenübergestellt.
This thesis deals with the conception and implementation of an action role-playing game using the game engine Unity. Within the context of an evaluation, the game was supposed to be evaluated with regard to the usability of the integrated control modes, the visual conviction of the animations and the user-friendliness of the tools and visualizations provided. In addition, weaknesses and problems in the game were to be identified through open feedback. The results of the evaluation showed that the game is still expandable in terms of usability and user-friendliness, but has left a good impression on the test persons.
In dieser Arbeit wird die Konzeption, Implementierung und Evaluierung einer Augmented Reality-App beschrieben. Diese wurde mit dem Ziel entwickelt, Objekte im realen Raum mit virtuellen Hilfsmitteln auszumessen, sodass diese Anwendung einen Holzgliedermaßstab ersetzen kann. Hinzu kommt die praktische Speicherung der Messwerte. Angefertigt wurde die App mit der Unity Engine und programmiert in C#.
Schwerpunkte dieser Arbeit sind die Benutzerfreundlichkeit der App, sowie die Eignung von AR Foundation für das Ausmessungstool.
Die Anwendung wird auf die genannten Kriterien im Rahmen eines Nutzertests in einer abschließenden Evaluation bewertet.
Als Ergebnis ließ sich festhalten, dass sich die AR-App noch im Prototyp-Stadium befindet, aber im Allgemeinen schon als benutzerfreundlich gilt. Kleinere Änderungen sollen und müssen noch vorgenommen werden, um auch den Umgang mit dem AR-Tool zu vereinfachen.
Simulation von Schnee
(2019)
Using physics simulations natural phenomena can be replicated
with the computer. The aim is to calculate a physical feature as correclty as
possible in order to draw conclusions for the real world. Fields of Application
are, for example, medicine, industry, but also games or films.
Snow is a very complex natural phenomenon due to its physical structure
and properties. To simulate snow, different material properties have to be
considered.
The most important method that deals with the simulation of snow and its
dynamics is the material point method. It combines the Lagrangian particles
based on continuum mechanics with a Cartesian grid. The grid enables
communication between the snow particles, which are not actually connected.
For calculation of particles data is transferred from these particles to
the grid nodes. There, calculations are carried out with information about
neighboring particles. The results are then transferred back to the original
particles. Using GPGPU techniques, physical simulations can be implemented
on the graphics card. Procedures like the material point method
can be parallelized well with these techniques.
This paper deals with the physical basics of the material point method and
implements them on the graphics card using compute shaders. Then performance
and quality are evaluated.
Simulation von Rauch
(2019)
This bachelor thesis deals with the simulation of smoke in a particle
system. Here the possibilities are investigated to implement smoke as
realistically as possible in a particle system and to calculate it in real time.
The physical simulation is based on the work of Müller and
Ren, who deal with the physical properties of fluids and gases.
The simulation was implemented on the GPU using C++, OpenGL and
the compute shaders available in OpenGL. Special attention was paid
to the performance of the simulation. Hoetzlein techniques are
used to accelerate the particle system. Two acceleration methods were
then implemented and compared. The runtime, but also the used memory
space of the GPU is discussed.
The goal of this work is the induction, conception, implementation and evaluation of an interactive game application among Android. The game genre of the app is a 2D-Jump ‘n’ Run Side-Scroller, whose graphical implementation is based on the four elements earth, fire, water and wind. The application should have classic functions of a Jump ‘n’ Run game and allow the player to overcome the four game worlds to find the finish. The implementation is based on Unity Engine and Adobe Photoshop. A user test asks basic questions about the application and specific questions about the research question, which are then evaluated. The research question examines the connection between fun factor and color perception while playing the app. Represented by the natural color combinations of the four elements. At the end possibilities for expansion and future prospects will be discussed.
In this thesis, the theory of video seethrough is fundamentally presented on the basis of a panoramic view from several camera frames of
different perspectives. Based on this, a system was designed and implemented in which video streams are put together into a panoramic image by
perspective distortion. This is then projected onto the inside of a cylinder
with the virtual position of the viewer in the middle. Finally, the resulting
video panoramas will be displayed in VR glasses. Within the implementation some optimizations are also presented, among others those that make
the system real-time capable beyond the task. Furthermore, the developed
system will be evaluated and compared with two other methods.
The following work describes the prototypical conception and development of the stat-raising game "Adventurer's Guild" using the game engine Ren'Py. The game's narrative is influenced by player decisions and the planning of activities. The game is to be visually pleasing and enjoyable.
After giving an overview of stat-raising as a genre, the existing games "Dandelion - Wishes Brought to You", "Pastry Lovers", "Long Live the Queen" and "Magical Diary" are analysed to pinpoint various strengths and weaknesses of their different takes on the genre.
The resultant findings are used for the conception of a new stat-raising game.
The game mechanics and the design decisions made are then shown in screenshots and thoroughly explained.
In a final assessment, the game will be examined with regard to the given task. Further possibilities for potential improvements and expansions will be detailed at the end.
This bachelor thesis deals with the conception, implementation and evaluation of a Jump'n'Run game and the consideration of the influence of achievment systems on players. In the game Age of Tunes you play Bardur, the beardless bard and have to try to free the cursed magical creatures in the world Harmonica. The emphasis of the thesis was the clean conception and gradual development of the game, appealing graphic quality, integration of opponents, a mini-game and the consideration of effects of an achievment system on players. In a final evaluation the game and the behavior could be evaluated regarding the achievments.
Raytracing von NURBS
(2019)
NURBS sind eine Art von Splines, die besondere Eigenschaften besitzen.
Das ray tracen von NURBS ist eine der Darstellungsmöglichkeiten von NURBS.
Dies ist durch das konkrete berechnen von Schnittpunkten mit Strahlen
möglich. Durch die vielseitige Möglichkeiten der Modellierung mittels NURBS
sind diese beliebt in Anwendungen die im Maschinenbau verwendet werden
und auch anderen CAD-Programmen. Diese Arbeit befasst sich mit der
Berechnung von NURBS-Kurven und -Oberflächen, dem direkten rendern
von diesen und wägt ab ob sich der Aufwand dafür im Vergleich zu Tesselierung
lohnt.
This Bachelor thesis illustrates the connection between the technologies Augmented and Virtual Reality and creates an expedient interdependency of the two forms of presentation. For this purpose, an application in the area of interior design has been implemented, where designing a room can be made more intuitive by using Augmented Reality, as it provides a realistic impression of the planned apartment with a Virtual Reality simulation. Based on the relevant knowledge, a project-concept has been drafted and realized by using several development systems. During a series of tests this implementation has been evaluated and subsequently optimized. The result confirms the assumption, that Augmented and Virtual Reality with their strengths can be combined to an evident solution. This thesis is relevant for computer science students as well as for people interested in innovative solutions.
Molecular dynamics (MD) as a field of molecular modelling has great potential to revolutionize our knowledge and understanding of complex macromolecular structures. Its field of application is huge, reaching from computational chemistry and biology over material sciences to computer-aided drug design. This thesis on one hand provides insights into the underlying physical concepts of molecular dynamics simulations and how they are applied in the MD algorithm, and also briefly illustrates different approaches, as for instance the molecular mechanics and molecular quantum mechanics approaches.
On the other hand an own all-atom MD algorithm is implemented utilizing and simplifying a version of the molecular mechanics based AMBER force field published by \big[\cite{cornell1995second}\big]. This simulation algorithm is then used to show by the example of oxytocin how individual energy terms of a force field function. As a result it has been observed, that applying the bond stretch forces alone caused the molecule to be compacted first in certain regions and then as a whole, and that with adding more energy terms the molecule got to move with increasing flexibility.
The following bachelor thesis gives an overview of various approaches and techniques for procedural generation of three-dimensional city models. Especially the usage of generative grammars is being examined and later used for the implementation of an own application. Its focus was the embedding of predetermined primary street networks as well as the procedural generation of secondary street networks and different kinds of buildings. The application allows the efficient creation of extensive and variably structured city models. However, there are restrictions regarding the realism and variation of the results.
How does gameplay influence the fun in video games? This article will search for an answer to this question by using a self-made video game created from scratch. This video game will be programmed in two versions with differences only in gameplay. Several test persons are then to play this game. A survey will be answered afterwards. In order to gain values that are merely influenced by gameplay changes, thoughts on the game design and conception were made. Results suggest that gameplay has a big impact on fun in video games. But gameplay isn't the only responsible factor that makes a video game amusing. Psychological aspects are present when the gameplay of a video game changes.
Global-Illumination is an important part of the rendering of realistic images. However, the computational complexity of an accurate simulation of these effects is too high for the use in real time applications. In this paper Light-Propagation-Volumes, Screen-Space-Reflections and multiple variants of Screen-Space-Ambient-Occlusion are investigated as a solution for real time rendering. It is shown that they are fast enough for the use in real time applications. The various techniques approximate only a few aspects of the light transport, but complement each other.
In no field of computer science has the hardware developed as rapidly as in the field of computer graphics. Today, we can display complex, geometric scenes in real time in immersive systems and also integrate elaborate simulations.
The aim of this work is to realize the simulation of paint splashes in a virtual world. For this purpose, an application will be implemented with the help of Unity, that uses three different techniques to color the environment with the help of paint splashes. Based on this application, the limits and possibilities of the techniques in virtual environments are examined more closely.
This examination shows that an inverse projection produces the best results.