func (m *Map) RenderToFile(path string) error { cs := C.CString(path) defer C.free(unsafe.Pointer(cs)) if C.mapnik_map_render_to_file(m.m, cs) != 0 { return m.lastError() } return nil }
// RenderToFile writes the map as an encoded image to the file system. func (m *Map) RenderToFile(opts RenderOpts, path string) error { scaleFactor := opts.ScaleFactor if scaleFactor == 0.0 { scaleFactor = 1.0 } cs := C.CString(path) defer C.free(unsafe.Pointer(cs)) var format *C.char if opts.Format != "" { format = C.CString(opts.Format) } else { format = C.CString("png256") } defer C.free(unsafe.Pointer(format)) if C.mapnik_map_render_to_file(m.m, cs, C.double(opts.Scale), C.double(scaleFactor), format) != 0 { return m.lastError() } return nil }