Lixunxiang@163.com
Abstract:Explore the digital rendering mode with texturing brush and ink effect, analyze and simulate the brush and ink characteristics of traditional Chinese ink painting, especially the art of landscape painting, and try to integrate the texture of wrinkle method synthesis map and modeling technology based on particle deposition and stacking (overlapping) to render, thus realizing the computer simulation of small freehand brushwork and large freehand brushwork (splash ink) ink effects in traditional landscape painting. This research inherits and develops the aesthetic theory and thought of traditional ink painting art, and makes some beneficial exploration in the field of digital freehand ink painting, which has positive reference value and promotion significance for the development of Chinese ink painting.Keywords:Freehand brushwork, Chinese ink landscape painting, Rendering and Presentation

Introduction

At present, the most successful research in the field of digital ink painting art both domestically and internationally is mainly based on virtual two-dimensional flat space ink effect painting (also known as watercolor). For Chinese ink and wash painting, especially for “Shan shui”, the model theory and algorithm of the paper inking effect has great reference value, but it cannot perfectly express the 3D dynamic ink and wash effect[1][2][3][4][5].
Due to the complexity, diversity and uncertainty of Chinese traditional landscape painting, its simulation is extremely difficult, so the digital simulation of 3D digital ink landscape painting is extremely challenging. For the field of 3D ink rendering, how to simulate the ”vivid charm and dripping with ink water ” artistic effect of Chinese ink and wash painting, especially big freehand and small freehand ink and wash landscape painting, through computer programs is a topic of high research value. Because traditional Chinese ink painting presentation tends to reflect artistic spirituality, such as the appeal of flower and bird painting, the charm of landscape painting, the vividness of figure painting, etc., how these ”hidden” or ”potential” artistic spirits are realized through computer program algorithms, and how to combine and choose between art and science, seems to be crucial. The ultimate goal of Rendering and Presentation of 3D digital ink landscape painting is to reflect the beauty of ”artistic conception” in the aesthetic theory of Chinese landscape painting through a digital presentation, that is, ”vigorous and colorful” as said by Mr. Huang Binhong, a landscape painting master [5].This paper attempts to use 3D modeling and rendering software Maya to simulate landscape painting and solve the above problems.

2 Modeling of Landscape Painting

The mountain stone modeling is the first problem to be solved in the modeling of Chinese ink landscape painting. Due to the self-similarity of the mountain stone contour, it is the most typical fractal theory. At present, most of the 3D mountain stone landscape models are constructed by using the generation method of fractal graphics. However, this paper mainly uses the particle deposition method of non-fractal technology to model and render mountains and trees in Maya. [6][7]。
The principle of ink wash wrinkle texturing, which simulates mountains and rocks by using particle deposition and stacking (overlapping) technology, belongs to a particle deposition algorithm [8][9]. The idea of the particle deposition algorithm is to make particles fall in sequence and simulate their flow on the surface composed of a previously fallen particle. A sufficient number of particles falling will produce a flow linear structure that looks like a viscous fluid. The formation mechanism is that a single particle is dropped from a high place, as shown in Figure 1 (a), and then the second particle is dropped on top of the first particle, and moves it until it is still, that is, until the height of its adjacent particles is no lower than it, as shown in Figure 1 (b), continue to drop the particle, and periodically change the drop point until a stacking effect of appropriate size is formed, as shown in Figure 1 (c). Particle stacking is another way of deposition, which can describe different stacking (overlapping) results generated by the deposition of different particle attributes.