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Thread: Zone of Theretical Visibility (ZTV) - curvature & refraction correction

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    Default Zone of Theretical Visibility (ZTV) - curvature & refraction correction

    I wonder if anyone knows if the Zone of Theoretical Visibility (ZTV/ZVI) functionality in Civil3D incorporates in-built calculation allowances for earth curvature and light refraction whilst computing and generating the ZTV hatches?
    Also, can we customise the hatch colours generated to any specific colours or are they 'hard wired' into the software?
    Thanks.
    Last edited by joao_cota; 2013-01-18 at 12:53 PM. Reason: mistake on 'Theoretical', needed for filters

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