The Research On Extensive Description Of Graphics In ScienceWord

ScienceWord is the first unique scientific document word-processing software. It has been widely used in a wide range of fields such as education, scientific research and so on. To achieve the open document format of ScienceWord, it is necessary to describe every document element such as text, graphic, formula, chemical structure etc. But ScienceWord has introduced the concept of logical graphic in its graphics. So the existing description languages aren't descriptive enough to the graphics. Therefore, the extensive description of graphics in ScienceWord is valuable to be studied, it is named ScienceSVG.In addition to external shape feature, the graphic also containing internal logic is called logical graphic. Logical graphic is difficult to describe mainly because of its internal logic. Through the study of basic concept, analysis method and according constraint theory of logical graphic, three types of logical graphic involving geometry graphic, math curve graphic and subject graphic were summed up. The lack of SVG in description of logical graphic was cleared, and the constaint was introduced to description of logic in logical grphic. Then the design objectives and the two important components of ScienceSVG were determined. As one component of ScienceSVG, description models of the three kinds of logical graphics were studied in details. In these models, the geometry logic and interactive behavior were indirectly described by translating to constraint. As the other component of ScienceSVG, the description of basic graphic was mainly drawn on some successful experience of SVG. After all these prepared, the two components were unified as ScienceSVG through the coordinate system and organize structure.As a result, ScienceSVG and its rendering engine, on the one hand, facilitate the development of graphics in ScienceWord. When expanding new graphics to ScienceWord, it's only necessary to add description data but the software needs not be amended. On the other hand, it makes the graphics described by ScienceSVG demonstrate freely on any platform based on ScienceWord, and also promotes the formation and development of ScienceML.