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Day/Night map effect

diofantisdiofantis Global Mapper UserPosts: 35Trusted User
edited March 2009 in SDK
Hi Mike,

i see that many gis/map applications supports a day/night effect. Do you have any idea how this can be achieved (using some filters etc, i dont believe that the loop for all the areas/lines/points and change the color).

I am searching on the google and so far i cant find anything.

Thanks in advance.


  • global_mapperglobal_mapper Administrator Posts: 17,238
    edited March 2009
    They probably just change the default drawing style for some feature types and background color. You can do this with the SDK using the GM_SetBackgroundColor function and the GM_SetAreaFeatureClassDrawStyle, GM_SetLineFeatureClassDrawStyle, and GM_SetPointFeatureClassDrawStyle functions.

    Let me know if I can be of further assistance.


    Global Mapper Support
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