ChunkyMap

ChunkyMap is a map renderer for Dynmap that uses Chunky to render the map tiles. This combines photorealistic rendering with the convenience and automatic updates of Dynmap. ChunkyMap is implemented as a drop-in replacement for the HDMap that comes with Dynmap.

Installation

1. Download the latest jar from the releases page and put it in your plugins directory.

2. Edit plugins/dynmap/worlds.txt and change the class option from org.dynmap.hdmap.HDMap to de.lemaik.chunkymap.dynmap.ChunkyMap for all maps that you want to render with Chunky.
   You can use any perspective and resolution for those maps (list of available perspectives).

   This example worlds.txt for a single map of a world called world might help you:

   worlds:
     - name: world
       maps:
         - class: de.lemaik.chunkymap.dynmap.ChunkyMap
           name: chunky
           title: World
           perspective: iso_SE_30_hires

3. Restart your server (restart not reload).

4. Re-render the worlds you enabled the new renderer for by running the following command from the server console: dynmap fullrender world (replace world with the actual world name).

5. Wait for it… ⌛

6. Wait for it… ⌛ (Sorry, rendering with Chunky takes a while, but it's worth it!)

7. Take a look at your new, shiny maps! ✨

Configuration

The maps can be configured by adding options to the map's section in the world.txt file.

Option	Description	Default
samplesPerPixel	Samples per pixel that Chunky should render. More SPP improves the render quality but also increases render time.	100
chunkyThreads	Number of threads per Chunky instance. More threads will decrease render time but increase the CPU load of your server.	2
chunkyCpuLoad	Percentage of CPU time to use, per Chunky thread. Note that this only throttles the CPU usage during rendering, not during scene loading or post processing.	100
texturepack	Texturepack path, relative to plugins/dynmap. Use this option to specify a texturepack for a map. The texturepack in Dynmap's configuration.txt is ignored by ChunkyMap.	None
chunkPadding	Radius of additional chunks to be loaded around each chunk that is required to render a tile of the map. This can be used to reduce artifacts caused by shadows and reflections.	0
templateScene	Path to a Chunky scene file (JSON), relative to plugins/dynmap. Use this option to customize the scene that is used for rendering the tiles, e.g. to change the water color.	None
texturepackVersion	The Minecraft version that should be used as fallback textures	1.16.2
denoiser.enabled	Enable denoising using Intel Open Image Denoise. Only works on Linux	false
denoiser.albedoSamplesPerPixel	Samples per pixel for the albedo map. Setting this to 0 will disable the albedo and normal map.	4
denoiser.normalSamplesPerPixel	Samples per pixel for the normal map. Setting this to 0 will disable the normal map.	4

Example configurations

Simple map rendered with ChunkyMap

plugins/dynmap/worlds.txt:

worlds:
  - name: world
    maps:
      - class: de.lemaik.chunkymap.dynmap.ChunkyMap
        name: chunky
        title: Chunky
        perspective: iso_SE_30_hires
        chunkyThreads: 2
        samplesPerPixel: 20
        denoiser:
          enabled: true
          albedoSamplesPerPixel: 4
          normalSamplesPerPixel: 4

Custom perspectives

Like the default dynmap renderer, ChunkyMap supports custom perspectives. As a starting point, you can use the built-in perspectives from perspectives.txt and customize them. More information on how to define custom perspectives can be found in the corresponding Dynmap wiki article.

The following example adds a maximum height to the nether world so that the dynmap doesn't only show the bedrock layer on top of it.

plugins/dynmap/worlds.txt:

worlds:
  - name: world_nether
    maps:
      - class: de.lemaik.chunkymap.dynmap.ChunkyMap
        name: chunky_nether
        title: Nether
        perspective: iso_SE_30_hires_nether
        chunkyThreads: 2
        samplesPerPixel: 20

plugins/dynmap/custom-perspectives.txt:

perspectives:
  - class: org.dynmap.hdmap.IsoHDPerspective
    name: iso_SE_30_hires_nether
    azimuth: 135
    inclination: 30
    scale: 16
    maximumheight: 100 # the bedrock layer is at 127

Customizing the look of a map with template scenes

You can change how the map looks by providing a template scene. That can be any Chunky scene (.json) file or a partial scene file (i.e. a .json file that only contains the values that should be changed). ChunkyMap will import many scene options from the template scene, including the sun position, fog and water configuration.

The following example changes the default gray water color to blue.

plugins/dynmap/worlds.txt:

worlds:
  - name: world
    maps:
      - class: de.lemaik.chunkymap.dynmap.ChunkyMap
        name: chunky
        title: Chunky
        perspective: iso_SE_30_hires
        chunkyThreads: 2
        samplesPerPixel: 20
        templateScene: blueWater.json

plugins/dynmap/blueWater.json:

{
  "useCustomWaterColor": true,
  "waterColor": {
    "red": 0.029,
    "green": 0.031,
    "blue": 0.16
  }
}

Ceveats

• Rendering is pretty slow, but I'll improve this by rendering multiple tiles as one image in the future.
• ChunkyMap only works with Bukkit/Spigot at the moment. Supporting more servers would be awesome, though!

Dynmaps that use this plugin

• Craften Server: Lobby Dynmap
• Greenfield City Minecraft: Greenfield Dynmap
• BoilerCraft: Purdue University
• Using ChunkyMap on your server? Submit a PR to get it on this list.

Building ChunkyMap

1. Get the latest version of Chunky 2. After updating, you'll find the jar file in ~/.chunky/lib (Linux/Mac) or %APPDATA%\.chunky\lib (Windows). Copy the chunky-core-<version>.jar file into the root directory of this repository and rename it to chunky.jar.
2. Run mvn install to install all other dependencies. Chunky 2 can't be installed this way because it's not yet in the Maven repository.
3. Run mvn clean package, the plugin jar will be in the target directory.

Note: To fix some concurrency issues that don't occur when using Chunky in standalone mode and aren't yet merged into Chunky, this plugin is built against this Chunky branch instead.

Copyright & License

ChunkyMap is Copyright 2016–2020 Maik Marschner (leMaik)

Permission to modify and redistribute is granted under the terms of the GNU General Public License, Version 3. See the LICENSE file for the full license.

ChunkyMap uses the following third-party libraries:

• Chunky by Jesper Öqvist
  Chunky is covered by the GNU General Public License, Version 3. See the license file in licenses/gpl-3.txt.
• Commons Math by the Apache Software Foundation
  Commons Math is covered by The Apache Software License, Version 2.0. See the license file in licenses/commons-math.txt.
• DynmapCore by mikeprimm
  DynmapCore is covered by The Apache Software License, Version 2.0. See the license file in licenses/apache-2.txt.
• Gson by Google
  Gson is covered by The Apache Software License, Version 2.0. See the license file in licenses/apache-2.txt.
• OkHttp by Square
  OkHttp is covered by The Apache Software License, Version 2.0. See the license file in licenses/apache-2.txt.

Trivia

Originally, ChunkyMap was created as a demo for the RenderService. This service allows rendering the tiles on a distributed network of renderers, which is often faster than rendering the tiles locally.

Ironically, I then implemented support for local tile rendering and removed support for using the RenderService. It will come back in the future.