Is it possible to write a bean that will generate an image based on the data passed to it from the data source?

For example, we will need to be able to present our custom data structures using custom rendering code, according to options that would likely be in the template. The simplest analog to what I'm thinking of is a custom chart bean that gets it's axis ranges, line styles, etc from the report template.

Note that I'm not looking for an actual chart control, I know you have one.

If so, does any information come to the bean about the page size, etc? I'd want to output the image at the correct DPI to achieve a particular physical size in the report.