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Howto:Create custom terrain: Difference between revisions
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[[File:Capture-4.png|thumb|200px|QGIS with the TIFF image.]] | [[File:Capture-4.png|thumb|200px|QGIS with the TIFF image.]] | ||
[[File:Capture-7.png|thumb|200px|Creating the class column.]] | [[File:Capture-7.png|thumb|200px|Creating the class column.]] | ||
[[File:Capture-10.png|thumb|200px|Toggle editing]] | |||
[[File:Capture-12.png|thumb|200px|Tracing the island.]] | |||
[[File:Capture-13.png|thumb|200px|The finished island polygon.]] | |||
[[File:Capture-15.png|thumb|200px]] | |||
[[File:Capture-17.png|thumb|200px]] | |||
Using a GIS software gives you the opportunity to realize a full range of interesting operations: modification of VMAP data, updates on the ground classification, etc... | Using a GIS software gives you the opportunity to realize a full range of interesting operations: modification of VMAP data, updates on the ground classification, etc... | ||
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#* A projection box should pop up. Select 'WGS 1984'. After all, that is the globe model used in FlightGear. | #* A projection box should pop up. Select 'WGS 1984'. After all, that is the globe model used in FlightGear. | ||
# Your vector layer should appear in the left-hand toolbar. You are ready to begin digitizing. | # Your vector layer should appear in the left-hand toolbar. You are ready to begin digitizing. | ||
#Select the newly created layer in the layer list, toggle editing (<tt>Layer > Toggle Editing</tt>) and finally select Capture Polygon from the same menu/toolbar. | |||
# With your mouse, left-click on a point at the southwestern edge of the island. | |||
# We now want to trace the outline of the island. Move your mouse to another point above the first point and click it again. Your mouse should show a red line. The points should not be redundant - for instance, as long as the line between two points is straight, there is no need for another point in between the two. | |||
# You will want to digitize features in a circular manner to avoid problems. You can always go back and add points later. With this in mind, move your mouse to a third point on the island. A small triangle should form, representing the polygon which would result if you decided you were done with the polygon. | |||
# Continue outlining the island by clicking along its shoreline, initially moving to the right. When you are on your last point, instead of left-clicking, right-click. QGIS will finish the polygon. | |||
# A dialog box will pop up, asking you to type in the value for 'class'. Since this is an island, covered with grass, type in ''GrassCover''. This step is important - it is how you know what each polygon should be mapped to in our finished scenery. A list of "allowed" materials (and thus classes) is available [http://wiki.osgeo.org/wiki/LandcoverDB_CS_Detail here]. | |||
===Generating scenery=== | |||
Please continue with [[TerraGear]] to generate the landclass into useable scenery. | |||
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== External links == | == External links == | ||