Marble/HistoricalMaps: Difference between revisions
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* [http://commons.wikimedia.org/wiki/Image:World_Map_1689.JPG World Map 1689] | * [http://commons.wikimedia.org/wiki/Image:World_Map_1689.JPG World Map 1689] | ||
* [http://commons.wikimedia.org/wiki/Image:Leonhard_Euler_World_Map_AD1760.jpg Leonhard Euler World Map 1760] | * [http://commons.wikimedia.org/wiki/Image:Leonhard_Euler_World_Map_AD1760.jpg Leonhard Euler World Map 1760] | ||
* [http://commons.wikimedia.org/wiki/Image:Moll_- | * [http://commons.wikimedia.org/wiki/Image:Moll_-_A_new_map_of_the_whole_world_with_the_trade_winds.png Moll - A new map of the world with the trade winds] | ||
_A_new_map_of_the_whole_world_with_the_trade_winds.png Moll - A new map of the world with the trade winds] | |||
* [http://commons.wikimedia.org/wiki/Image:Nova_Orbis_Tabula_in_Lucem_Edita.jpg Nova Orbis Tabula in Lucem Edita] | * [http://commons.wikimedia.org/wiki/Image:Nova_Orbis_Tabula_in_Lucem_Edita.jpg Nova Orbis Tabula in Lucem Edita] | ||
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====Preparing Historical Maps for use in Marble==== | ====Preparing Historical Maps for use in Marble==== | ||
Maps for Marble need to get provided in | Maps for Marble need to get provided in [http://en.wikipedia.org/wiki/Plate_carrée_projection plate carrée projection] (also referred | ||
to as "Equirectangular projection"): | to as "Equirectangular projection"): | ||
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ancient maps into the desired projection. It doesn't require too many skills. Just some patience and love to detail. | ancient maps into the desired projection. It doesn't require too many skills. Just some patience and love to detail. | ||
You can have a look at | You can have a look at [http://spin3d.com/ Spin3D] for a source of inspiration. Please consider to use Free Software instead of Morph Man (e.g. xmorph). | ||
The "rectangular image" that is the result after half of the tutorial is | The "rectangular image" that is the result after half of the tutorial is | ||
what you need. | what you need. | ||
Revision as of 16:02, 26 October 2008
Historical Maps for Marble
We'd like to add Historical Maps to Marble. Ideally one would later on be able to travel through time using a slider later on. For now we concentrate on a more simple approach:
There are lots of very early world maps that are under the public domain. You'll find several on Wikipedia (please add further ones to the list as you find them) and elsewhere on the internet:
- World Map 1689
- Leonhard Euler World Map 1760
- Moll - A new map of the world with the trade winds
- Nova Orbis Tabula in Lucem Edita
Licensing
If you find new maps it's always important to check the license. Although ancient maps should usually be under the public domain there are several people who claim copyright on the data due to the image manipulation work they have done as a part of post-processing the scan. No matter whether this is legitimate or not we should respect those claims and look for data that was intended to be published under the public domain (or another free license) and use that.
It's important to note that people like to distribute imagery "free for non-commercial usage". Unfortunately we are not able to use and distribute this data as this would e.g. prohibit most Linux Distributors from distributing our software.
Preparing Historical Maps for use in Marble
Maps for Marble need to get provided in plate carrée projection (also referred to as "Equirectangular projection"):
There are morphing tools and HOWTOS on the web that can tell you how to morph ancient maps into the desired projection. It doesn't require too many skills. Just some patience and love to detail.
You can have a look at Spin3D for a source of inspiration. Please consider to use Free Software instead of Morph Man (e.g. xmorph).
The "rectangular image" that is the result after half of the tutorial is what you need.