A plan that shows what can be read

A land plan whose layers decide by themselves when to appear. A wide name stands over the plot while the plan is looked at whole, the fine wall figures come in once it is enlarged twice over, and the sentence under the plan is there in two languages, of which a reader shows the one it is set to.

This page is the whole program, for whoever writes your software. There is nothing here to read otherwise. Go back to the document it writes.

JSON write_self_showing_layers.json 204 lines

This one is not a program. It is the request the document server is sent: the same page, asked for over the network by an application that writes no PDF code at all.

The page is written in two languages, and where the library example picks its set of words at the moment it runs, a request holds one set of words and there is one request per language. The one published here is the English one. The library also writes each line of the page at a stated height; a request gives a block of words a rectangle instead, so every line's rectangle here is worked back from that height, and twelve of them reach past the plan they stand under, harmlessly, because the library writes those lines without breaking them and a block of words would break them at the edge of its rectangle. The plot boundary and the house are one setting of the ink kept for both on the library's side and two things here, each stating that colour for itself, and the house is filled and then outlined as two shapes there and drawn once and painted in one go here. The four layers, the enlargement the first two change hands at, the language each of the last two states and which one a reader falls back on are the same either way, down to the order the panel lists them in.

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{
  "layers": [
    { "name": "Whole plot", "zoom": { "to": 2.0 } },
    { "name": "Fine figures", "zoom": { "from": 2.0 } },
    { "name": "English", "language": "en", "preferred": true },
    { "name": "Français", "language": "fr" }
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      "stroke": { "width": 1.6, "color": [0.2, 0.2, 0.2] }
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      "type": "rect",
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    {
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      "content": ["PLOT 12"],
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      "type": "text",
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      "content": ["24.30 m × 17.60 m"],
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    {
      "type": "text",
      "rect": { "llx": 200.0, "lly": 475.0, "urx": 280.0, "ury": 480.4 },
      "content": ["11.20"],
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      "type": "text",
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      "type": "text",
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      "content": ["3.35"],
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      "content": ["Plot 12, Mill Lane — sold with the barn and the well."],
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      "content": ["Parcelle 12, chemin du Moulin — vendue avec la grange et le puits."],
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      "type": "text",
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      "content": ["stands over the plan while it is looked at whole"],
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      "content": ["comes in once the plan is enlarged twice over"],
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      "color": [0.35, 0.35, 0.35]
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      "content": ["one layer a language, and a reader shows the one it is set to"],
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      "color": [0.35, 0.35, 0.35]
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      "type": "text",
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      "content": [
        "wide label steps back. Set the reader to another language and the sentence follows."
      ],
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}