CORS issue in browsers about bedrock-viz

[GRMule]

I spent some time trying to use various tricks. no luck.

Something I kind of got fixated on was that OpenLayer will render Base64 data just fine. ImageStatic's src property just jams itself into an img tag, and if you feed it base64 it is perfectly happy with it. That got me to thinking -- can the backend write a file that maps filename -> base64 data of the image, in a large file that just has K:V mapping for all the files? If the map script loaded that file, whenever an image is to be loaded it can use the bsae64 data, which has no "origin" and thus completely side-steps the issue. I think the backend could still write the image files to disk, but if it were creating that map the front-end uses, it might also not be necessary to output the image files any longer. This approach has the significant advantage of being cross-browser and cross-platform.

Other than that, I didn't have any luck. I don't have Firefox, but FF Dev Edition also throws the error.

[amatulic]

Viewing the bedrock-viz maps with a node.js server is working well for me. See #159 - I made a node.js server app that has a front end "helper" to maintain your collection of maps as well as view them.