{
  "tool": "Built-in image_gen",
  "reference": "assets/earth-print.png",
  "use": "Generated illustrative artwork, not an observation of cities or catalogued objects.",
  "assets": [
    {
      "file": "assets/earth-print-night-motion.png",
      "prompt": "Use case: lighting-weather / style-transfer. Create a sibling experimental Earth cutout for a vintage 1950s science-fiction data poster. Reference image is the exact style and globe geometry to retain: full circular Earth centered in a square transparent canvas, 94 percent of canvas width, equal margins. Preserve its visibly painted gouache, engraved stipple and old lithographic ink texture, turquoise and petroleum teal seas, sage green continents, parchment cream cloud ribbons and muted ochre land. Repaint the lighting so the LEFT half of the sphere is daylight, the RIGHT half is deep midnight petroleum teal night, with a soft curved dusk boundary. The shadow covers roughly half the Earth. The night hemisphere remains visibly spherical, with faint dark cloud forms, recognizable land and tiny clustered warm cream / amber city lights following coasts and settlements, drawn as luminous vintage painted speckles and short irregular clusters, not neon or uniform dots. The day hemisphere should have the same rich legible hand-painted surface as the reference. A restrained thin cream atmospheric rim on the lit edge. This whole illustration including its painted lighting will slowly rotate as one flat cutout in an experiment. Show a COMPLETE round Earth, not a cap, and no clipping, no space background, stars, labels, other objects, rectangular backdrop or extra glow outside the edge. True transparent alpha around the globe. Keep the center and diameter precisely as in the reference."
    },
    {
      "file": "assets/earth-day-night-atlas.png",
      "derivative": "assets/earth-day-night-atlas.jpg",
      "prompt": "Use case: stylized-concept. Asset type: ONE square 2048 x 2048 texture atlas for a rotating Earth sphere in a vintage 1950s science-fiction infographic. Reference image is STYLE ONLY: painted gouache, engraved stipple, old lithographic ink, petroleum teal and turquoise oceans, sage green and muted ochre continents, parchment cream sweeping cloud ribbons. Create exactly TWO equally sized EDGE-TO-EDGE flat rectangular equirectangular world maps, each 2:1, stacked with no gap, no frame, no labels. TOP HALF: a uniformly lit DAYTIME map of the entire Earth, flat geographic equirectangular projection, longitude -180 at left to +180 at right, north pole at top edge and south pole at bottom edge. Recognizable continents in correct broad relative positions: Americas toward left, Africa Europe center, Asia toward right, Australia lower right; Atlantic near center-left. Cloud bands painted into the map. No lighting direction, no terminator or cast shadows in the daytime map. BOTTOM HALF: the EXACT SAME map and cloud geometry perfectly aligned at the same coordinates, painted in deep midnight petroleum teal with faint clouds and terrain and warm amber/cream tiny city-light clusters following settlements, coastlines and roads on land, with oceans dark. The bottom image is night ALL ACROSS, not half night half day. Fine irregular golden light speckles in cities, subtle and painterly, no exaggerated glowing coast outlines. Output should read as two matching flat texture maps, NOT spheres, no globe edges, no stars, no text, no perspective, no legend, no vertical or horizontal blank margin. Longitude edges should tile continuously. Matching geography between the two halves is essential, they will be blended by a fixed light on the sphere."
    },
    {
      "file": "assets/earth-painted-day.png",
      "derivative": "assets/earth-painted-day.jpg",
      "reference": "assets/earth-print-night-motion.png",
      "prompt": "Use case: style-transfer. Asset type: a SINGLE daytime equirectangular Earth surface texture for a rotating sphere, 2:1 landscape canvas, ideally 2048 x 1024. The reference is the exact desired ART STYLE, not the projection: rich hand-painted 1950s vintage science-fiction Earth poster art, visibly drawn gouache coastlines, broad bold parchment-cream cloud ribbons, engraved lithographic stippling, dense intentional ink dots and short hatch marks, warm golden-ochre land, sage green and deep turquoise / petroleum teal ocean. Re-create that tactile illustrated print quality as a FLAT complete world map covering the canvas edge to edge. A complete Earth map in standard equirectangular projection, north at top, longitudes -180 left to +180 right, Europe and Africa center, Americas left, Asia and Australia right. Keep the correct 2:1 world-map proportions so it will wrap onto a round sphere without elongated continents. Use confident broad painted shapes and very crisp engraved ink texture, like the reference, with a restrained five-ink vintage palette. Distinct bold brush-shaped cloud swirls, no blurry photographic cloud texture, no modern photorealistic satellite imagery, no soft CGI rendering, no bevels or photographic highlights. UNIFORM DAYLIGHT ACROSS THE WHOLE MAP, with no sphere shading, shadows, terminator or city lights. The renderer adds the lighting. No globe, no curvature, no perspective, no frame, no text, no labels, no stars, no inset or second map, no margins. Only ONE flat 2:1 Earth map, seamless at the longitude edges."
    },
    {
      "file": "assets/earth-painted-night.png",
      "derivative": "assets/earth-painted-night.jpg",
      "reference": "assets/earth-painted-day.png",
      "prompt": "Use case: lighting-weather. Edit target: the supplied flat 2:1 daytime world texture. Create its precisely registered NIGHT companion for the same rotating vintage 1950s science-fiction globe. Keep the exact canvas dimensions, exact projection, all coastline positions, continent silhouettes, latitude and longitude alignment, and every cloud ribbon position UNCHANGED. Change ONLY the lighting and nighttime palette: all across the entire map is nighttime, deep midnight petroleum teal seas, very dark sage and teal land, subdued cloud forms visible in old-print engraved hatching and stippling. Paint warm cream and amber city-light clusters on land around towns, populated coasts and settlements, using tiny irregular vintage ink speckles and short threads as in hand-painted science-fiction poster art. Restrained softly glowing lights, not neon and not a bright outline tracing every coast. No photographic/CGI texture or lighting, no blur. Preserve the sharp handcrafted lithographic grain and gouache shapes of the reference; the surface should visibly be a painted illustration. No sunlit areas, no day/night boundary (the renderer adds it), no globe or curvature, no stars, text, labels, panels, frames or margins. Output the same SINGLE flat 2:1 world map, edge to edge, geographically registered to the input so the two textures can be blended without the continents or clouds moving."
    }
  ],
  "notes": "The atlas is the earlier texture study. The fixed-light poster now uses separate, geographically registered 2:1 day and night maps in the rotating cutout's painted style. JPEGs are web derivatives made with sips. Both experiments rotate once in five minutes."
}