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|                 SCENERY MAKER: GUIDE TO SYNTETIC SCENERIES                |
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Six sections inside a BGL scenery are dedicated to what are called "Syntetic
sceneries".

Synthetic sceneries are made of almost square "blocks" of landscape elements
either drawn with the texture bitmaps provided with FS5 package (.R8 files)
or containing their own 3D objects (hills, mountains, buildings)

Every synthetic block command places a group of blocks or a single block
depending on the section it is called within:

Section    No. of blocks     Long. span            Lat. span
number     each command                            at equator
~~~~~~~    ~~~~~~~~~~~~~   ~~~~~~~~~~~~~~        ~~~~~~~~~~~~~~~
Synth1       32 x 32       1d 24' 22.5"          1d 24' 31.11"
Synth2       16 x 16          42' 11.25"            42' 15.6725"
Synth3        8 x 8           21'  5.625"           21'  7.7781"
Synth4        4 x 4           10' 32.8125"          10' 33.8404"
Synth5        2 x 2            5' 16.4063"           5' 16.8715"
Synth6          1              2' 38.2031"           2' 38.3871"

Longitude span of the blocks is almost constant when latitude varies, as the
aspect does; therefore the block actual size is larger at low latitudes
(toward Equator) and smaller at high latitudes (toward the poles).

Syntetic blocks commands have the same names of the texture bitmap files
included in FS5 package. The only exceptions are the name of those blocks
made by 3D objects, or the sea.

It is possible to set a water/land relationship for every terrain. This
relationship allows to build coasts of different shape.
SEA command can be set to have a thin line of coast up, down, left or right.

The following commands build a single block of syntetic at the longitude
position defined, giving the appropriate appearance and land/water
relationship.

The structure of the following commands is:

  CommandName(Longitude, Coast, GLevel)

  where:
         Longitude: longitude of the synth block
         Coast    : a coast/water relationship. This can be set through
                    the following keywords:
                    N_N: no coastline
                    D_L: water is down and left (convex shape)
                    D_R: water is down and right (convex shape)
                    D_H: water is down (harbour)
                    U_L: water is up and left (convex shape)
                    U_R: water is up and right (convex shape)
                    U_H: water is up (harbour)
                    L_H: left harbour 
                    R_H: right harbour 
                    T_R: water is top and right (concave shape)
                    B_R: water is bottom and right (concave shape)
                    T_L: water is top and left (concave shape)
                    B_L: water is bottom and left (concave shape)
         GLevel   : ground altitude of the block

Following is a list of correspondances between synthetic blocks command names
and texture files included in FS5. Some texture has different versions
accordingly with the season.

Command names                           Corresponding .R8 files
~~~~~~~~~~~~~                           ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
                                        Spring   Summer   Autumn   Winter

  COUNTRY 
  ~~~~~~~
  Crops                                 CROPS    CROPSS   CROPSF   CROPSW
  Farm1                                 FARM     FARMS    FARMF    FARMW
  Farm2
  Prarie                                PRARIE   PRARIES  PRARIEF  PRARIEW

  CITIES (no buildings)
  ~~~~~~~~~~~~~~~~~~~~~
  Burb                                  BURB
  Burb2                                 BURB2
  Burb3                                 BURB3
  Hirise                                HIRISE
  Medrise1                              MEDRISE
  Medrise2
  Paris                                 PARIS
  Urban                                 URBAN
  Urbburb                               URBBURB


  CITIES (with buildings)
  ~~~~~~~~~~~~~~~~~~~~~~~
  City                                  CITY
  Medcity                               MEDCITY
  Medrise3                              MEDRISE
  

  LANDSCAPES
  ~~~~~~~~~~
  Arid                                  ARID
  Broad                                 BROAD    BROADS   BROADF   BROADW
  Desert                                DESERT
  Ice                                   ICE
  Lake                                  LAKE                       LAKEW
  Needle                                NEEDLE
  Swamp                                 SWAMP
  Trop                                  TROP
  Tundra                                TUNDRA   TUNDRAS  TUNDRAF  TUNDRAW

  HILLS
  ~~~~~
  The next commands have the following structure:
  
  CommandName(Longitude, GLevel)

  Hills blocks command names are:

  Hillsbrown   : peaks have an altitude between 190 and 210 m
  Hillsgreen   : peaks have an altitude between 170 and 210 m
  Lake

  WATER
  ~~~~~
  The next commands have the following structure:

  CommandName(Longitude)

  All the following blocks have the same appearance of WATER texture.

  Water blocks command names are:

  Sea       : water only                            
  Sea_L     : water at left, thin coast
  Sea_D     : water down, thin coast
  Sea_R     : water at right, thin coast
  Sea_U     : water up, thin coast
  Sea_L_R   : water left and right
  Sea_U_D   : water up and down
  Sea_M     : water in the middle of thin coasts


  MOUNTAINS
  ~~~~~~~~~
  Peaks height depends from the latitude of the mountain block, and is
  proportional to the size of the block.
  Peaks, however, can be modified via the following multipliers:

                Percentage
                of normal
  Multiplier    peak height
  ~~~~~~~~~~    ~~~~~~~~~~~
  Eighth           12 %  lowest
  Quarter          25 %
  Half             50 %
  Normal          100 %  normal height 
  ThreeHalf       150 %
  Double          200 %
  Triple          300 %
  FourTimes       400 %  the highest

  The structure of mountains commands is:

  CommandName (Longitude, Peaks, GLevel)

  where:
         LongUnit : Longitude unit
         Peaks    : peak height multiplier
         GLevel   : ground altitude of the block

  Mountains block command names are:

  Mount_LT_Green
  Mount_OliveGreen
  Mount_Yellow
  Mount_Green
  Mount_Pink
  Mount_Pink_II
  Mount_OliveGreen_II
  Mount_White
  Mount_OliveGreen_III
  Mount_Orange
  Mount_Red
  Mount_Green_II
  Mount_Pink_III


All Rights reserved.
(c) 1995,1996 Enrico Schiratti, LAGO
Scenery MAKER is (c) 1995,1996 Simula FlightWare, LAGO. 
Network drivers are (c) 1995,1996 Simon Hradecky, NOMISSOFT. 
Scenery Budapest and Scenery Delhi are (c) 1995,1996 Andras Kozma, LAGO. 
Microsoft and MS-DOS are either registered trademarks or trademarks of 
Microsoft Corporation in the United States and/or other countries. 
Flight Simulator is a trademark of Bruce A. Artwick. 
All other products and brands are trademarks or registered trademarks of 
their respective owners.
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Written by Giovanni Roli and Stefano Figoni
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