html5 canvas: server or client fast transforms from longitude latitude to pixel values
I am working on some maps and animations using the html5 canvas element (example visible here.) I would like to be able to efficiently generate pixel-valued linestrings (x1, y1, x2, y2), ideally from PostGIS, based on the geometry of the canvas. That is, in pseudo-geojson: "Coordinates":"[[-122.0, 35.0], [-121.0, 36.0]]" might outpu...