Realization and improvement of the primitives rotation of GoDiegram graphics
To address the problem of drawing technique in GoDiegram graphics engine,the functions which graphic editors need,the efficiency of exploitation,this essay analyze the characteristics within the primitive objects and their properties of the engine.And then considering the transformation of primitives coordinate when rotating,change of keypoint and the location offset and other factors,designed a rotation algorithm for picture frame that included a large number of primitives.The algorithm refers to image rotation of computer graphics principles was made by combining the engines own peculiarity with rotation method.Taking a representative primitives rotation as an example,it allowing any angle to rotate which enhanced the flexibility and increased the scope of engines application.At the same time,this assay establish a unified rotation standard which can be used to simplify the former process,avoid the mistake of rotation which was made by the various primitives in global picture.Simulation analysis demonstrated that the algorithm greatly saved the resources and space of computer,satisfied the effectiveness of actual demand.and solved the key problems in engineering applications.
cgraphics engine PRA graphics edit unified standard primitive rotation
Dong Li-li Pang Wei
School of Information & Control Engineering Xian Univ.of Arch.& Tech Xian,China
国际会议
太原
英文
139-143
2011-02-26（万方平台首次上网日期，不代表论文的发表时间）