Prusinkiewicz, PrzemysławRingham, Lee2020-01-242020-01-242020-01-22Ringham, L. (2020). Modelling Natural Phenomenon with Reaction-Diffusion (Master's thesis, University of Calgary, Calgary, Canada). Retrieved from https://prism.ucalgary.ca.http://hdl.handle.net/1880/111551Procedural methods provide an algorithmic way to produce textures for use in computer graphics. One such method, reaction-diffusion, is a powerful mathematical approach that describes natural pattern formation in terms of chemicals known as morphogens. This thesis describes LRDS, an environment for authoring reaction-diffusion models directly on arbitrary surfaces. Morphogens, their behaviours, and the domain in which they reside can be quickly and easily defined. By performing computation on the GPU, the pattern forming simulation can be interacted with in real-time, facilitating productivity and experimentation. Four case studies are presented. The first is a simulation of ladybug pigmentation patterns. The second is a simulation of pigmentation patterns seen on the body of snakes. The third study looks at flower petal pattern modelling. Lastly, a biologically-motivated model of the autoimmune disease psoriasis is presented.engUniversity of Calgary graduate students retain copyright ownership and moral rights for their thesis. You may use this material in any way that is permitted by the Copyright Act or through licensing that has been assigned to the document. For uses that are not allowable under copyright legislation or licensing, you are required to seek permission.Reaction-diffusionComputer Sciencemaster thesis10.11575/PRISM/37499