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src/components/ogre/manipulation/entityrecipes/boulder.entityrecipe

 

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<entityrecipes>

 

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  <entityrecipe name="boulder">

 

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    <author>Alexey Torkhov</author>

 

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    <description>

 

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      This is boulder recipe

 

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    </description>

 

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    <entity type="boulder">

 

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      <atlas>

 

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        <map>

 

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          <list name="bbox">$bbox</list>

 

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          <float name="mass">$mass</float>

 

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          <string name="style">$style</string>

 

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        </map>

 

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      </atlas>

 

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    </entity>

 

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    <adapters>

 

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      <adapter name="mass" type="number" title="Mass" default="100000"/>

 

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      <adapter name="massdev" type="number" title="Mass std. dev." default="10000"/>

 

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      <adapter name="style" type="string" title="Style" allowrandom="yes" default="Random">

 

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        <item value="a">Boulder A</item>

 

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        <item value="b">Boulder B</item>

 

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        <item value="c">Boulder C</item>

 

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        <item value="d">Boulder D</item>

 

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      </adapter>

 

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    </adapters>

 

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    <bindings>

 

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      <bind name="bbox" func="boulder.calcSize">

 

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        <adapter name="mass" />

 

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        <adapter name="massdev" />

 

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      </bind>

 

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      <bind name="mass">

 

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        <adapter name="mass" />

 

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      </bind>

 

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      <bind name="style">

 

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        <adapter name="style" />

 

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      </bind>

 

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    </bindings>

 

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    <script><![CDATA[

 

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      boulder = {}

 

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      function boulder.calcSize(a, b)

 

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        local density = 2500  * 0.52 -- our boulder is not cubic, 0.52 is rough volume of its size 1

 

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        local massmean = a:asNum()

 

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        local massdev = b:asNum()

 

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        local mass = math.abs(math.randn(massmean, massdev))

 

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        local volume = mass / density

 

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        local len = volume^(1/3)

 

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        local bbox = Atlas.Message.ListType()

 

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        bbox:push_back(-len/2)

 

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        bbox:push_back(-len/2)

 

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        bbox:push_back(0)

 

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        bbox:push_back(len/2)

 

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        bbox:push_back(len/2)

 

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        bbox:push_back(len)

 

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        return Atlas.Message.Element(bbox)

 

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      end

 

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    ]]></script>

 

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  </entityrecipe>

 

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</entityrecipes>

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