Procedural Modelling of Auspicious Cloud

Auspicious cloud is one of the most Chinese-style auspicious patterns with a long history in China. However, most of previous research works focus on realistic cloud animation, little effort has been paid to model auspicious cloud in traditional Chinese style. In this paper a procedural modelling method is presented. First, we construct the cloud skeleton curve by use of eclipses, we then arrange a series of primitive circles with different radiuses along with points in the curve and obtain cloud silhouette by union of these circles; We take a dynamic silhouette point as start position and draw a spiral curve along the centre of cloud. Experimental results show that the proposed method is able to generate a wide variety of auspicious clouds in traditional Chinese style.