CATIA-CAA二次开发Graphical Properties.docVIP

?3D PLM Enterprise Architecture 3D Visualization Graphical Properties How to use or implement the CATIVisProperties Interface Technical Article Abstract The first objective of this article is to understand what are the graphical properties. The second is to explain how they are integrated in the visualization process. Three interfaces are important: CATIVisProperties, CATIVisu and CATIProperty. The first enables to associate with a feature a set of graphical properties, the second uses the CATIVisProperties interface to update the graphic attributes of the graphic representations, and the last stores the data. CATIVisProperties is the main interface of this system. Principe of the Graphical Properties? The Graphical Properties are Graphical Attributes The Types of Geometry The Graphical Properties by Geometry Type Integration of the Graphical Properties in the Visualization Process Generalites Default behaviors of the SetxxxGraphicAttribute methods In short the Standard Graphical Properties by Type of Geometry Automation The Interactive Commands The Properties Command The Graphic Properties Toolbar The Hide/Show Command Using CATIVisProperties Implementing CATIVisProperties In Short References Principe of the Graphical Properties Before to go into all the details, a little example to set the subject. Suppose a cube feature [Fig.1 ] which is composed of two types of geometry: faces (6) and edges (12). On this feature, for the set of faces and for the set of edges, graphical properties are put. For faces, it is possible to set a color, a degree of opacity and for the lines, a color, a type and a thickness.? Fig.1: Graphical Properties on the Cube Feature The principe of the graphical properties lies on the fact that an element (a feature) contains one or several sub-types. A sub-type is sorted by type of geometry: point, line, surfacic etc and for each sub-type a set of graphical properties is associated. To integrate them in the visualizat