zeGraph - Graphic object library

Examples

Example01: It demonstrates the minimal required steps to construct a scene and render a shape in the scene to a window.

Example02: For a large number of data, adding them directly to a vertex or color object makes the XML code difficult to read. Using the <include> tag, you can combine scripts in multiple files as one. The tag let you construct a scene skeleton and use it to show different data. Here the render in example02.xml is used to animate lines in inc01.xml.

Example03: Three new concepts are introduced here: (1) Create a light and texture object in a static node and use a image as texture; (2) Read vertex, normal, and texture coordinate data from a file; and (3) Animate a dynamic node.

Example04: Although the line plot is extremely simple, the example demonstrates how to define a symbol and then clone the symbol for every point in the a vertex object. Because you can load a symble from a script file or read symbol vertex data from a text file, any kind of line plot of scattered point plot can be created. Further more, because the clone function let you optionally scale the cloned symbols with a vertex object, you can actually use the function to create other types of plot, e.g., 2D or 3D bar plot.

Example05: Including wide characters (e.g., Chinese or Japanese) in a XML file requires encoding. To avoid this trouble, zeGraph lets you import text string from another file to a xml script to be used as text or axis labels. This example shows how to do it.

Example06: In this animation, a series of line objects are created in a node object by including inc06.xml in the main script. The node is then used as object list for animation.

Example07: The <append> and <readtext> functions of vertex, color, and texture coordinate objects are quite flexible for adding data to a shape object, but they are not efficient for a large dataset. zeGraph implements a plugin interface to allow users to add functions to a dynamic-link library (DLL) in C or C++ for creating shapes, importing data, or conducting conversions. This example demonstrates calling DLL functions to make the globe.

Example08: This is an application of XML script by METEX to plot air trajectories. Online calculation results can be copied to a text file, formated (e.g., traj.txt) according to the requirement of the <readtext> function of a vertex object, and then used as the input for the script.