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Howto:Editing tile textures and materials: Difference between revisions
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Howto:Editing tile textures and materials (view source)
Revision as of 09:50, 9 June 2020
, 9 June 2020no edit summary
JamesHester (talk | contribs) (Added first draft of some detailed texture image construction methods.) |
JamesHester (talk | contribs) No edit summary |
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Texture images should reflect the way the land looks from above, so a typical starting source is an aerial photograph or orthophoto, such as those shown by OpenStreetMaps when editing. Note that very few areas license these images in a way that is compatible with FlightGear use. One jurisdiction that does release aerial photos with a license compatible with FlightGear is the NSW state government in Australia. A screenshot of an area of NSW taken directly from OSM is used in the following example - conveniently a scale is provided by OSM that is useful for working out how many pixels of the screenshot correspond to the desired distance on the ground (images not yet included). | Texture images should reflect the way the land looks from above, so a typical starting source is an aerial photograph or orthophoto, such as those shown by OpenStreetMaps when editing. Note that very few areas license these images in a way that is compatible with FlightGear use. One jurisdiction that does release aerial photos with a license compatible with FlightGear is the NSW state government in Australia. A screenshot of an area of NSW taken directly from OSM is used in the following example - conveniently a scale is provided by OSM that is useful for working out how many pixels of the screenshot correspond to the desired distance on the ground (images not yet included). | ||
In general two screenshots of overlapping areas will be necessary to form a full square of the required dimensions. | In general two screenshots of overlapping areas will be necessary to form a full square of the required dimensions. Here are two used to create a "DryCrop" texture: | ||
=== Creating the initial image === | === Creating the initial image === | ||
All steps are described using the | All steps are described using the GIMP software package. Similar tools are available in other image editors. | ||
* Open one screenshot and enlarge the image size to some larger, square dimension than the final size | * Open one screenshot and enlarge the image size to some larger, square dimension than the final size | ||
* Cut and paste the second screenshot into place so that the meeting point matches up | * Cut and paste the second screenshot into place so that the meeting point matches up | ||