Automatic shadow generation algorithm based on two-dimensional vector graphics

• Published in: Ji suan ji ying yong yan jiu Vol. 31; no. 8; pp. 2528 - 2531
• Main Authors: Zhang, Shao-Hua, Qin, Zhi-Yuan, Zhang, Bao-Yin
• Format: Journal Article
• Language: Chinese
• Published: 01.08.2014
• Subjects: Algorithms; Animation; Automation; Mathematical analysis; Projection; Shadows; Two dimensional; Vectors (mathematics)
• ISSN: 1001-3695
• DOI: 10.3969/j.issn.1001-3695.2014.08.071

The automatic shadow generation algorithm is one of the most important and difficult problems in the 2D animation transition process from traditional hand-painted to computer-aided production. Aiming at this problem, this paper analysed the research status of the shadow generation algorithm and the shadow painting in traditional hand-painted process. On this basis, it proposed an automatic shadow generation algorithm, using projection technology achieved automatic generation inner shadow and outer shadow of the two-dimensional modeling by definition of point light source and introduction of two-dimensional animation modeling surface at different angles. This algorithm has been applied to the actual animation production process, and achieved good results.