gwturtle提供龟的图形和矢量图形SVG和VML GWT。

GwTurtle offers turtle graphics and vector graphics with SVG and VML for GWT. With GwTurtle you can easily include vector graphics into GWT projects. The vector graphics are integrated into a GWT widget, which then can be put into any GWT page. GwTurtle constructs vector graphics with SVG (all browsers except Internet Explorer before version 9) or VML (Internet Explorer from version 6 to 8). When using GwTurtle the code for both SVG and VML is the same. The differences are handled by GwTurtle. Please see the Wiki for additional information about Internet Explorer compatibility. There are two different ways to program vector graphics. The first one is the GWT style, where you create objects like circles, rectangles or polygons, manipulate and group them. The second style is the turtle graphics, where you have turtle well known from the Logo programming language with a pen. You can put the pen down and up, move the turtle forward and backward, turn it around an