Regional materials update:

- Re-factor common properties (including condition statements) into separate files.
Note that using "index=0" attributes these can be over-ridden.
- Add caribbean regional textures and building definitions
- Add missing low-resolution rainforest-hawaii.png

Materials/regions/caribbean-farm-buildings.xml

@@ -0,0 +1,14 @@
+<?xml version="1.0"?>
+<!-- Set of generic farm buildings, for inclusion in a materials file -->
+<PropertyList>
+  <range-m>5000</range-m>
+  <object>
+    <path>Models/Buildings/red-barn.ac</path>
+    <path>Models/Buildings/cow-stable.ac</path>
+    <path>Models/Agriculture/farmhouse1.ac</path>
+    <path>Models/Agriculture/farmhouse2.ac</path>
+    <path>Models/Agriculture/farmhouse3.ac</path>
+    <coverage-m2>5000</coverage-m2>
+    <heading-type>mask</heading-type>
+  </object>
+</PropertyList>

Materials/regions/caribbean.xml

@@ -0,0 +1,45 @@
+<?xml version="1.0"?>
+<!-- General settings for all caribbean materials -->
+<PropertyList>
+  <!-- Define the caribbean as a box with given latitude/longitude -->
+  <condition>
+    <and>
+     <greater-than>
+      <property>position/longitude-deg</property>
+      <value>-85.0</value>
+     </greater-than>
+     <less-than>
+      <property>position/longitude-deg</property>
+      <value>-40.0</value>
+     </less-than>
+     <greater-than>
+      <property>position/latitude-deg</property>
+      <value>11.0</value>
+     </greater-than>
+     <less-than>
+      <property>position/latitude-deg</property>
+      <value>25</value>
+     </less-than>
+    </and>
+  </condition>
+  
+  <!-- Caribbean buildings definitions. Notes that these will be used for -->
+  <!-- both towns and cities                                              -->
+  <building-texture>Textures/buildings-caribbean.png</building-texture>
+  <building-lightmap>Textures/buildings-caribbean-lightmap.png</building-lightmap>
+  <building-small-min-floors>1</building-small-min-floors>
+  <building-small-max-floors>2</building-small-max-floors>
+  <building-small-max-width-m>20.0</building-small-max-width-m>
+  <building-small-min-depth-m>8.0</building-small-min-depth-m>
+  <building-small-max-depth-m>20.0</building-small-max-depth-m>
+  <building-medium-min-floors>1</building-medium-min-floors>
+  <building-medium-max-floors>3</building-medium-max-floors>
+
+  <!-- Appropriate tropical trees -->
+  <tree-texture>Trees/tropical-summer.png</tree-texture>
+  <tree-varieties>8</tree-varieties>
+  <tree-range-m alias="/params/forest/tree-range-m"/>
+  <tree-height-m>25.0</tree-height-m>
+  <tree-width-m>15.0</tree-width-m>
+  
+</PropertyList>

Materials/regions/european.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0"?>
+<!-- General settings for all European materials -->
+<PropertyList>
+  <!-- Define Europe as a box with given latitude/longitude -->
+  <condition>
+    <and>
+      <equals>
+        <property>sim/startup/season</property>
+        <value>summer</value>
+      </equals>
+    <and>
+     <greater-than>
+      <property>position/longitude-deg</property>
+      <value>-20.0</value>
+     </greater-than>
+     <less-than>
+      <property>position/longitude-deg</property>
+      <value>40.0</value>
+     </less-than>
+     <greater-than>
+      <property>position/latitude-deg</property>
+      <value>35.0</value>
+     </greater-than>
+    </and>
+   </and>
+  </condition>
+  
+  <!-- European buildings definitions. Notes that these will be used for  -->
+  <!-- both towns and cities                                              -->
+  <building-texture>Textures/buildings.png</building-texture>
+  <building-lightmap>Textures/buildings-lightmap.png</building-lightmap>
+
+  
+</PropertyList>

Materials/regions/hawaii.xml

@@ -0,0 +1,38 @@
+<?xml version="1.0"?>
+<!-- General settings for all Hawaii materials -->
+<PropertyList>
+  <!-- Define Hawaii as a box with given latitude/longitude -->
+  <condition>
+   <and>
+     <greater-than>
+      <property>position/longitude-deg</property>
+      <value>-179.0</value>
+     </greater-than>
+     <less-than>
+      <property>position/longitude-deg</property>
+      <value>-154.0</value>
+     </less-than>
+     <greater-than>
+      <property>position/latitude-deg</property>
+      <value>18.8</value>
+     </greater-than>
+     <less-than>
+      <property>position/latitude-deg</property>
+      <value>28.5</value>
+     </less-than>
+   </and>
+  </condition>
+  
+  <!-- Hawaiian buildings definitions. Notes that these will be used for  -->
+  <!-- both towns and cities                                              -->
+  <building-texture>Textures/buildings-caribbean.png</building-texture>
+  <building-lightmap>Textures/buildings-caribbean-lightmap.png</building-lightmap>
+  <building-small-min-floors>1</building-small-min-floors>
+  <building-small-max-floors>2</building-small-max-floors>
+  <building-small-max-width-m>20.0</building-small-max-width-m>
+  <building-small-min-depth-m>8.0</building-small-min-depth-m>
+  <building-small-max-depth-m>20.0</building-small-max-depth-m>
+  <building-medium-min-floors>1</building-medium-min-floors>
+  <building-medium-max-floors>3</building-medium-max-floors>
+  
+</PropertyList>