Terragen butte tutorial8/4/2023 In this article, a procedural technique is proposed for the generation of buttes and mesas terrain formations. Beneš and Forsbach introduced layered representation consisting of stacked horizontal materials, where each has its own elevation and geological attributes. Hybrid methods can be also isolated by trying to cumulate positive aspects of both main representations, while minimising their weaknesses. In this case, all techniques are much more complicated, but it is possible to achieve landforms unreachable in height-based structures (also in aspherical topology) e.g., caves, rock shelves, or arches. Complex models are based on volumetric representation. The main disadvantage of this representation is the inability to replicate models with aspherical topology. ![]() This is due to the ease of implementation of procedural methods for generating and rendering synthetic landforms. The matrices of elevation values i.e., height fields are the simplest and most commonly used for terrain models. The results are similar to the structures observed in nature and are achieved within an acceptable time for real-time interactions.ĭata structures for terrain models can be categorised into two main types, however, both of them have weaknesses and advantages. The final model was achieved by the erosive modification of geometry according to the materials and its hardness data. The obtained geometry was used for materials’ classification and the hardness part of the modelled terrain. In the modification, the step function as the fault line generator was replaced with a circular one. The starting point of the technique is the Poisson Faulting algorithm that was originally used to obtain fractional Brownian surfaces. The proposed terrain model is based on a height-field representation extended by materials and its hardness information. The results can be used as assets by artists and designers. This method is not intended to simulate physically inspired erosion processes, but targets directly the generation of eroded forms. ![]() In the following article a procedural method is considered for terrain modelling of structures, geometrically similar to the mesas and buttes hills. One of the unique terrain artefacts occur in the form of table mountains and can be observed in the Monument Valley (Colorado Plateau, USA). The visible form depends often upon internal geological structure and materials. Natural terrains created by long-term erosion processes can sometimes have spectacular forms and shapes.
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