From 09ed8d2554e0e9ae334c6b5d7fc41aa63883ccc7 Mon Sep 17 00:00:00 2001
From: Erik Hofman <erik@ehofman.com>
Date: Sun, 21 Mar 2021 14:09:04 +0100
Subject: [PATCH] Tweak the african mediteranian airport keep, grasslands,
 schrub cover, crop areas and grasslands

---
 Materials/regions/africa_mediterranean.xml | 326 ++++++++++++++-------
 1 file changed, 225 insertions(+), 101 deletions(-)

diff --git a/Materials/regions/africa_mediterranean.xml b/Materials/regions/africa_mediterranean.xml
index 946722b6b..ad66764c1 100644
--- a/Materials/regions/africa_mediterranean.xml
+++ b/Materials/regions/africa_mediterranean.xml
@@ -2,55 +2,55 @@
 <!-- Regional definitions for the Northern Africa -->
 <PropertyList>
   <name>African mediterranean</name>
-  
+
   <area>
-		<lon1>-10.02</lon1>
-		<lon2>-3.69</lon2>
-		<lat1>35.98</lat1>
-		<lat2>30.39</lat2>
+    <lon1>-10.02</lon1>
+    <lon2>-3.69</lon2>
+    <lat1>35.98</lat1>
+    <lat2>30.39</lat2>
   </area>
-  
+
   <area>
-		<lon1>-3.69</lon1>
-		<lon2>3.50</lon2>
-		<lat1>36.48</lat1>
-		<lat2>34.17</lat2>
+    <lon1>-3.69</lon1>
+    <lon2>3.50</lon2>
+    <lat1>36.48</lat1>
+    <lat2>34.17</lat2>
   </area>
-  
+
   <area>
-		<lon1>3.50</lon1>
-		<lon2>11.6</lon2>
-		<lat1>34.17</lat1>
-		<lat2>37.56</lat2>
+    <lon1>3.50</lon1>
+    <lon2>11.6</lon2>
+    <lat1>34.17</lat1>
+    <lat2>37.56</lat2>
   </area>
-  
+
   <area>
-		<lon1>9.75</lon1>
-		<lon2>15.38</lon2>
-		<lat1>35.02</lat1>
-		<lat2>31.85</lat2>
+    <lon1>9.75</lon1>
+    <lon2>15.38</lon2>
+    <lat1>35.02</lat1>
+    <lat2>31.85</lat2>
   </area>
-  
+
   <area>
-		<lon1>19.79</lon1>
-		<lon2>23.68</lon2>
-		<lat1>31.66</lat1>
-		<lat2>33.22</lat2>
+    <lon1>19.79</lon1>
+    <lon2>23.68</lon2>
+    <lat1>31.66</lat1>
+    <lat2>33.22</lat2>
   </area>
-  
+
   <area>
-		<lon1>-18.43</lon1>
-		<lon2>-13.28</lon2>
-		<lat1>27.47</lat1>
-		<lat2>30.50</lat2>
+    <lon1>-18.43</lon1>
+    <lon2>-13.28</lon2>
+    <lat1>27.47</lat1>
+    <lat2>30.50</lat2>
+  </area>
+
+  <area>
+    <lon1>29.43</lon1>
+    <lon2>33.03</lon2>
+    <lat1>31.75</lat1>
+    <lat2>24.83</lat2>
   </area>
-  
-	<area>
-		<lon1>29.43</lon1>
-		<lon2>33.03</lon2>
-		<lat1>31.75</lat1>
-		<lat2>24.83</lat2>
-	</area>
 
   <material>
     <name>pa_shoulder</name>
@@ -67,7 +67,7 @@
       <uvstretch>8.0</uvstretch>
     </parameters>
   </material>
-  
+
   <material>
     <name>pc_shoulder</name>
     <texture>Runway/pc_shoulder_mediterranean.png</texture>
@@ -89,20 +89,30 @@
     <name>Airport</name>
     <name>AirportKeep</name>
     <name>Greenspace</name>
-    <effect>Effects/airfield</effect>
+    <effect>Effects/grass</effect>
     <texture-set>
-      <texture>Terrain/grass_dry3.png</texture>
-      <texture n="13">Terrain/grass_dry3.png</texture>
-      <texture n="14">Terrain/gravel_overlay.png</texture>
+      <texture>Terrain/grass_dry3a.png</texture>
+      <texture n="13">Terrain/grass_dry2.png</texture>
+      <texture n="14">Terrain/gravel_brown.png</texture>
+      <texture n="15">Terrain/airport_grass_structure_overlay2.png</texture>
+      <texture n="20">Terrain/savanna-grass2.png</texture>
     </texture-set>
     <parameters>
-      <grit_alpha>0.4</grit_alpha>
+      <hires_overlay_bias>2.5</hires_overlay_bias>
+      <grit_alpha>0.8</grit_alpha>
+      <base_layer_magnification>0.4</base_layer_magnification>
       <use_overlay>1</use_overlay>
-			<overlay_bias>0.5</overlay_bias>
+      <overlay_layer_magnification>6.0</overlay_layer_magnification>
+      <overlay_bias>0.125</overlay_bias>
+      <overlay_alpha>1.21</overlay_alpha>
       <use_color_overlay>0</use_color_overlay>
-      <base_layer_magnification>1.0</base_layer_magnification>
-      <overlay_layer_magnification>16.0</overlay_layer_magnification>
-      <overlay_alpha>1.0</overlay_alpha>
+      <use_grain>1</use_grain>
+      <grain_layer_magnification>10.0</grain_layer_magnification>
+      <max_grass_height>0.3</max_grass_height>
+      <grass_density>1.0</grass_density>
+      <grass_groups>2</grass_groups>
+      <grass_modulate_by_overlay>1</grass_modulate_by_overlay>
+      <grass_modulate_height_min>0.0</grass_modulate_height_min>
     </parameters>
     <xsize>256</xsize>
     <ysize>256</ysize>
@@ -128,12 +138,10 @@
   </material>
 
   <material>
-    <name>EvergreenBroadCover</name>
-    <name>EvergreenForest</name>
     <name>RainForest</name>
     <name>MixedForestCover</name>
     <name>MixedForest</name>
-    <name>DeciduousBroadCover</name> 
+    <name>DeciduousBroadCover</name>
     <name>DeciduousForest</name>
     <name>DeciduousNeedleCover</name>
     <effect>Effects/forest</effect>
@@ -142,15 +150,15 @@
       <texture n="11">Terrain/gravel_gray.png</texture>
       <texture n="15">Terrain/airport_grass2.png</texture>
     </texture-set>
-		<parameters>
-			<grain_strength>0.5</grain_strength>			
-			<hires_overlay_bias>0.1</hires_overlay_bias>
-		</parameters>
+    <parameters>
+      <grain_strength>0.5</grain_strength>
+      <hires_overlay_bias>0.1</hires_overlay_bias>
+    </parameters>
     <xsize>2000</xsize>
     <ysize>2000</ysize>
     <light-coverage>4000000.0</light-coverage>
     <wood-coverage>14000.0</wood-coverage>
-    <tree-texture>Trees/tropical-alt.png</tree-texture> 
+    <tree-texture>Trees/tropical-alt.png</tree-texture>
     <tree-varieties>4</tree-varieties>
     <tree-height-m>20.0</tree-height-m>
     <tree-width-m>25.0</tree-width-m>
@@ -158,40 +166,97 @@
     <bumpiness>0.85</bumpiness>
   </material>
 
-  <material>  
-		<name>Grassland</name>
+  <material>
+    <name>EvergreenBroadCover</name>
+    <name>EvergreenForest</name>
+    <effect>Effects/forest</effect>
+    <texture-set>
+      <texture>Terrain/airport_grass2.png</texture>
+      <texture n="11">Terrain/grass-caribbean.png</texture>
+      <texture n="12">Terrain/gravel_gray.png</texture>
+      <texture n="15">Terrain/forest1a.png</texture>
+    </texture-set>
+    <object-mask>Terrain/pantanal-mask.png</object-mask>
+    <parameters>
+      <grain_strength>0.5</grain_strength>
+      <hires_overlay_bias>0.9</hires_overlay_bias>
+    </parameters>
+    <xsize>10000</xsize>
+    <ysize>10000</ysize>
+    <light-coverage>4000000.0</light-coverage>
+    <wood-coverage>8000.0</wood-coverage>
+    <tree-texture>Trees/savanna-trees.png</tree-texture>
+    <tree-varieties>4</tree-varieties>
+    <tree-height-m>12.0</tree-height-m>
+    <tree-width-m>8.0</tree-width-m>
+    <rolling-friction>0.8</rolling-friction>
+    <bumpiness>0.85</bumpiness>
+  </material>
+
+  <material>
+    <name>Grassland</name>
     <name>GrassCover</name>
     <effect>Effects/forest</effect>
     <texture-set>
-      <texture>Terrain/grass-caribbean.png</texture>
-      <texture n="11">Terrain/grass_dry3a.png</texture>
-      <texture n="12">Terrain/grass_dry3.png</texture>
-      <texture n="15">Terrain/airport_grass2.png</texture>
+      <texture>Terrain/pampas-grass.png</texture>
+      <texture n="11">Terrain/gravel_gray.png</texture>
+      <texture n="12">Terrain/grass_dry2a_darker.png</texture>
     </texture-set>
-		<parameters>
-			<grain_strength>0.5</grain_strength>			
-			<hires_overlay_bias>-0.1</hires_overlay_bias>
-		</parameters>
-    <xsize>2000</xsize>
-    <ysize>2000</ysize>
+    <parameters>
+      <rock_strata>0.5</rock_strata>
+      <grain_strength>0.5</grain_strength>
+      <hires_overlay_bias>-0.08</hires_overlay_bias>
+      <transition_model>0.5</transition_model>
+      <use_grain>1</use_grain>
+      <grain_layer_magnification>0.2</grain_layer_magnification>
+      <grit_alpha>0.8</grit_alpha>
+    </parameters>
+    <xsize>1000</xsize>
+    <ysize>1000</ysize>
     <light-coverage>4000000.0</light-coverage>
-    <wood-coverage>40000.0</wood-coverage>
-    <tree-texture>Trees/tropical-alt.png</tree-texture> 
+    <wood-coverage>12000.0</wood-coverage>
+    <tree-texture>Trees/savanna-trees.png</tree-texture>
     <tree-varieties>4</tree-varieties>
-    <tree-height-m>20.0</tree-height-m>
-    <tree-width-m>25.0</tree-width-m>
+    <tree-height-m>8.0</tree-height-m>
+    <tree-width-m>6.0</tree-width-m>
     <rolling-friction>0.4</rolling-friction>
     <bumpiness>0.65</bumpiness>
   </material>
 
-  <material>  
+  <material>
     <name>Shrub</name>
     <name>ShrubCover</name>
     <name>ShrubGrassCover</name>
     <name>ScrubCover</name>
     <name>Scrub</name>
-    <name>Sclerophyllous</name>
     <name>Marsh</name>
+    <effect>Effects/forest</effect>
+    <texture-set>
+      <texture>Terrain/pampas-grass.png</texture>
+      <texture n="11">Terrain/gravel_gray.png</texture>
+      <texture n="12">Terrain/grass_dry2a_darker.png</texture>
+    </texture-set>
+    <object-mask>Terrain/pantanal-mask.png</object-mask>
+    <parameters>
+      <grain_strength>0.5</grain_strength>
+      <hires_overlay_bias>-0.08</hires_overlay_bias>
+      <overlay_hardness>0.2</overlay_hardness>
+      <transition_model>0.5</transition_model>
+    </parameters>
+    <xsize>1000</xsize>
+    <ysize>1000</ysize>
+    <light-coverage>4000000.0</light-coverage>
+    <wood-coverage>12000.0</wood-coverage>
+    <tree-texture>Trees/savanna-trees.png</tree-texture>
+    <tree-varieties>4</tree-varieties>
+    <tree-height-m>8.0</tree-height-m>
+    <tree-width-m>6.0</tree-width-m>
+    <rolling-friction>0.4</rolling-friction>
+    <bumpiness>0.65</bumpiness>
+  </material>
+
+  <material>
+    <name>Sclerophyllous</name>
     <name>FloodLand</name>
     <name>SaltMarsh</name>
     <name>HerbWetlandCover</name>
@@ -203,18 +268,18 @@
       <texture n="12">Terrain/gravel_gray.png</texture>
       <texture n="15">Terrain/airport_grass2.png</texture>
     </texture-set>
-		<parameters>
-			<grain_strength>0.5</grain_strength>			
-			<hires_overlay_bias>-0.08</hires_overlay_bias>
-		</parameters>
+    <parameters>
+      <grain_strength>0.5</grain_strength>
+      <hires_overlay_bias>-0.08</hires_overlay_bias>
+    </parameters>
     <xsize>4000</xsize>
     <ysize>4000</ysize>
     <light-coverage>4000000.0</light-coverage>
     <wood-coverage>30000.0</wood-coverage>
     <tree-texture>Trees/mixed-shrub.png</tree-texture>
     <tree-varieties>4</tree-varieties>
-    <tree-height-m>10.0</tree-height-m>
-    <tree-width-m>15.0</tree-width-m>
+    <tree-height-m>6.0</tree-height-m>
+    <tree-width-m>8.0</tree-width-m>
     <rolling-friction>0.4</rolling-friction>
     <bumpiness>0.65</bumpiness>
   </material>
@@ -224,12 +289,17 @@
     <name>DryCrop</name>
     <name>NaturalCrop</name>
     <texture-set>
-      <texture>Terrain/dry_pasture4.png</texture>
-      <texture n="11">Terrain/sand_hires_ochre.png</texture>
-      <texture n="12">Terrain/dry_pasture4.png</texture>
+      <texture>Terrain/california-drycrop.png</texture>
+      <texture n="11">Terrain/gravel_gray.png</texture>
+      <texture n="12">Terrain/drycrop2.png</texture>
+      <texture n="13">Terrain/gravel_gray.png</texture>
     </texture-set>
     <parameters>
-      <hires_overlay_bias>-0.1</hires_overlay_bias>
+      <rotation_flag>random</rotation_flag>
+      <hires_overlay_bias>-0.2</hires_overlay_bias>
+      <grain_strength>0.5</grain_strength>
+      <grit_alpha>0.8</grit_alpha>
+      <use_grain>1</use_grain>
     </parameters>
     <xsize>2000</xsize>
     <ysize>2000</ysize>
@@ -242,21 +312,24 @@
   </material>
 
   <material>
-    <name>IrrCropPastureCover</name>
-    <name>IrrCrop</name>
     <name>Orchard</name>
     <name>Olives</name>
     <name>Vineyard</name>
     <name>Rice</name>
-    <name>MixedCropPastureCover</name>
-    <name>MixedCrop</name>
-    <name>Crop</name>
-    <name>ComplexCrop</name>
     <texture-set>
-      <texture>Terrain/mixedcrop2.png</texture>
-      <texture n="11">Terrain/grass_dry3a.png</texture>
+      <texture>Terrain/cerrado-crop.png</texture>
+      <texture n="11">Terrain/gravel_gray.png</texture>
       <texture n="15">Terrain/sand_hires_ochre.png</texture>
     </texture-set>
+    <parameters>
+      <rock_strata>1</rock_strata>
+      <use_overlay>1</use_overlay>
+      <hires_overlay_bias>-0.1</hires_overlay_bias>
+      <use_color_overlay>1</use_color_overlay>
+      <grain_strength>0.1</grain_strength>
+      <grit_alpha>0.8</grit_alpha>
+      <use_grain>1</use_grain>
+    </parameters>
     <object-mask>Terrain/mixedcrop2-mask.png</object-mask>
     <xsize>2000</xsize>
     <ysize>2000</ysize>
@@ -267,13 +340,64 @@
     <bumpiness>0.7</bumpiness>
     <load-resistance>1e30</load-resistance>
     <object-group include="Materials/base/sa-farm-buildings.xml"/>
-    <wood-coverage>3500.0</wood-coverage>
-    <tree-texture>Trees/mixed-shrub.png</tree-texture>
-    <tree-varieties>8</tree-varieties>
-    <tree-height-m>20.0</tree-height-m>
-    <tree-width-m>12.0</tree-width-m>
+    <wood-coverage>13500.0</wood-coverage>
+    <tree-texture>Trees/savanna-trees.png</tree-texture>
+    <tree-varieties>4</tree-varieties>
+    <tree-height-m>8.0</tree-height-m>
+    <tree-width-m>6.0</tree-width-m>
   </material>
-  
+
+  <material>
+    <name>IrrCropPastureCover</name>
+    <name>IrrCrop</name>
+    <name>MixedCropPastureCover</name>
+    <name>MixedCrop</name>
+    <name>Crop</name>
+    <name>ComplexCrop</name>
+    <texture-set>
+      <texture>Terrain/cerrado-crop.png</texture>
+      <texture n="11">Terrain/gravel_gray.png</texture>
+      <texture n="15">Terrain/sand_hires_ochre.png</texture>
+    </texture-set>
+    <parameters>
+      <rock_strata>1</rock_strata>
+      <use_overlay>1</use_overlay>
+      <hires_overlay_bias>-0.15</hires_overlay_bias>
+      <use_color_overlay>1</use_color_overlay>
+      <grain_strength>0.1</grain_strength>
+      <grit_alpha>0.8</grit_alpha>
+      <use_grain>1</use_grain>
+    </parameters>
+    <object-mask>Terrain/mixedcrop2-mask.png</object-mask>
+    <xsize>2000</xsize>
+    <ysize>2000</ysize>
+    <light-coverage>2000000.0</light-coverage>
+    <solid>1</solid>
+    <friction-factor>0.9</friction-factor>
+    <rolling-friction>0.1</rolling-friction>
+    <bumpiness>0.7</bumpiness>
+    <load-resistance>1e30</load-resistance>
+    <object-group include="Materials/base/sa-farm-buildings.xml"/>
+    <wood-coverage>13500.0</wood-coverage>
+    <tree-texture>Trees/savanna-trees.png</tree-texture>
+    <tree-varieties>4</tree-varieties>
+    <tree-height-m>8.0</tree-height-m>
+    <tree-width-m>6.0</tree-width-m>
+    <diffuse>
+      <r>0.83</r>
+      <g>0.85</g>
+      <b>0.83</b>
+      <a>1.0</a>
+    </diffuse>
+    <specular>
+      <r>0.1</r>
+      <g>0.12</g>
+      <b>0.1</b>
+      <a>1.0</a>
+    </specular>
+    <shininess>1.2</shininess>
+  </material>
+
   <material>
     <name>DryLake</name>
     <name>IntermittentReservoir</name>
@@ -282,7 +406,7 @@
       <texture>Terrain/sand1.png</texture>
       <texture n="12">Terrain/grass_dry3.png</texture>
       <texture n="15">Terrain/sand_hires_ochre.png</texture>
-    </texture-set> 
+    </texture-set>
     <parameters>
       <dot_density>0.2</dot_density>
     </parameters>
@@ -294,7 +418,7 @@
     <friction-factor>0.7</friction-factor>
     <bumpiness>0.1</bumpiness>
   </material>
-  
+
    <material>
     <name>BarrenCover</name>
     <name>Dirt</name>
@@ -305,9 +429,9 @@
       <texture>Terrain/california-rock.png</texture>
       <texture n="11">Terrain/gravel_gray.png</texture>
       <texture n="14">Terrain/grain_texture.png</texture>
-    </texture-set>    
+    </texture-set>
     <parameters>
-			<hires_overlay_bias>-0.1</hires_overlay_bias>
+      <hires_overlay_bias>-0.1</hires_overlay_bias>
       <grain_strength>0.7</grain_strength>
     </parameters>
     <xsize>3000</xsize>