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Author: leenak
Date: Sun Aug 19 00:19:56 2007
New Revision: 1665

Added:
   trunk/Model/Textures/CloudTexture.cc
   trunk/Model/Textures/CloudTexture.h
Modified:
   trunk/Model/Textures/CMakeLists.txt
   trunk/SwigInterface/manta.i
Log:
Cloud Texture has been added

Modified: trunk/Model/Textures/CMakeLists.txt
==============================================================================
--- trunk/Model/Textures/CMakeLists.txt (original)
+++ trunk/Model/Textures/CMakeLists.txt Sun Aug 19 00:19:56 2007
@@ -15,6 +15,8 @@
      Textures/HeightColorMap.h
      Textures/MarbleTexture.cc
      Textures/MarbleTexture.h
+     Textures/CloudTexture.cc
+     Textures/CloudTexture.h
      Textures/NormalTexture.cc
      Textures/NormalTexture.h
      Textures/OakTexture.cc

Added: trunk/Model/Textures/CloudTexture.cc
==============================================================================
--- (empty file)
+++ trunk/Model/Textures/CloudTexture.cc        Sun Aug 19 00:19:56 2007
@@ -0,0 +1,5 @@
+#include<Model/Textures/CloudTexture.h>
+
+namespace Manta {
+
+}

Added: trunk/Model/Textures/CloudTexture.h
==============================================================================
--- (empty file)
+++ trunk/Model/Textures/CloudTexture.h Sun Aug 19 00:19:56 2007
@@ -0,0 +1,119 @@
+
+/*
+ * This texture class takes two arguments.
+ * First one indicates coverage of cloud in the sky(0-1) and
+ * Second one indicates the dimension in which clouds occur(0, 1 or 2) 
+ * 0 indicates x-axis, 1 indicates y-axis and 2 z-axis.
+ *
+ */
+     
+#ifndef Manta_Model_CloudTexture_h
+#define Manta_Model_CloudTexture_h
+
+#include <Interface/Texture.h>
+#include <Interface/RayPacket.h>
+#include <Core/Geometry/Vector.h>
+#include <Core/Math/Noise.h>
+#include <Core/Math/MiscMath.h>
+#include <Core/Math/Trig.h>
+
+
+namespace Manta {
+  class RayPacket;
+  class RenderContext;
+  template< typename ValueType >
+  class CloudTexture : public Texture< ValueType > {
+    public:
+    CloudTexture( Real const cloud_cover, Real const cloud_coordinate );
+    virtual ~CloudTexture();
+    virtual void mapValues(Packet<Color>& results,
+                           const RenderContext&,
+                           RayPacket& rays) const;
+    Real cloud_coverage(Real value) const;
+    private:
+    CloudTexture(
+      CloudTexture const & );
+    CloudTexture& operator=(
+      CloudTexture const & );
+    
+    ValueType skycolor;
+    Real scale;
+    Real fscale;
+    Real tscale;
+    int octaves;
+    Real lacunarity;
+    Real gain;
+    Real cloud_coordinate;
+    Real cloud_cover;
+  };
+
+  template< class ValueType >
+  CloudTexture< ValueType >::CloudTexture( Real const cloud_cover, Real 
const cloud_coordinate)      
+               : cloud_cover( cloud_cover ),
+      cloud_coordinate(cloud_coordinate)
+  {
+    skycolor=Color(RGBColor(1,1,1))-Color(RGBColor(0,0,1));
+    scale=0.1;
+    fscale=1;
+    tscale=1;
+    octaves=8;
+    lacunarity=1.8;
+    gain=0.48;
+  }
+  
+  template< class ValueType >
+  CloudTexture< ValueType >::~CloudTexture()
+  {
+  }
+  
+  template< class ValueType >
+  void CloudTexture< ValueType >::mapValues(Packet<Color>& results,
+                                             const RenderContext& context,
+                                             RayPacket& rays) const
+  {
+    rays.computeTextureCoordinates3( context );
+    for( int i = rays.begin(); i < rays.end(); i++ ) {
+     
+      Vector T = rays.getTexCoords(i) * (scale * tscale);
+      ColorComponent density;
+      ColorComponent value;
+       
+      if(cloud_coordinate==0)
+      {
+       density=cloud_coverage(rays.getTexCoords(i).x());
+       value =(( rays.getTexCoords(i).x()) * fscale + (Real)Turbulence( T, 
octaves, lacunarity, gain ));
+      }
+      if(cloud_coordinate==1)
+      {
+       density=cloud_coverage(rays.getTexCoords(i).y());
+       value =(( rays.getTexCoords(i).y()) * fscale + (Real)Turbulence( T, 
octaves, lacunarity, gain ));
+      }
+      if(cloud_coordinate==2)
+      {
+       density=cloud_coverage(rays.getTexCoords(i).z());
+       value =(( rays.getTexCoords(i).z()) * fscale + (Real)Turbulence( T, 
octaves, lacunarity, gain ));
+      }
+      
+      value=value*(Real)0.5+(Real)0.5;
+      value=value*density;
+      value=value*(Real)0.5+(Real)0.5;
+      results.set(i, (SCIRun::Interpolate( skycolor, Color(RGBColor(0,0,0)), 
value))+Color(RGBColor(1,1,1)));
+    
+    }
+  }
+
+  template< class ValueType >
+  Real CloudTexture< ValueType >::cloud_coverage(Real value) const
+               {
+      Real total_cover=(cloud_cover*1.6215)+249.8;
+      Real c_value = total_cover-value;
+      if(c_value < 0)
+      {
+       c_value=0;
+      }
+      Real density_value = 255 - ((c_value));
+      return density_value;
+    }
+}
+
+#endif

Modified: trunk/SwigInterface/manta.i
==============================================================================
--- trunk/SwigInterface/manta.i (original)
+++ trunk/SwigInterface/manta.i Sun Aug 19 00:19:56 2007
@@ -180,6 +180,7 @@
 #include <Model/Textures/TileTexture.h>
 #include <Model/Textures/ImageTexture.h>
 #include <Model/Textures/MarbleTexture.h>
+#include <Model/Textures/CloudTexture.h>
 %}
 
 %include <Model/Textures/Constant.h>
@@ -187,7 +188,7 @@
 %include <Model/Textures/TileTexture.h>
 %include <Model/Textures/ImageTexture.h>
 %include <Model/Textures/MarbleTexture.h>
-
+%include <Model/Textures/CloudTexture.h>
 
 namespace Manta {
   // Textures.  If you add a new texture like FunkyTexture<MagicType>,
@@ -213,6 +214,7 @@
   %template(Constant_Color) Constant<Color>;
   %template(ImageTexture_Color) ImageTexture<Manta::Color>;
   %template(MarbleTexture_Color) MarbleTexture<Manta::Color>;
+  %template(CloudTexture_Color) CloudTexture<Manta::Color>;
   
 }
 

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• [Manta] r1665 - in trunk: Model/Textures SwigInterface, leenak, 08/19/2007
  • Re: [Manta] r1665 - in trunk: Model/Textures SwigInterface, Solomon Boulos, 08/19/2007
  • Re: [Manta] r1665 - in trunk: Model/Textures SwigInterface, James Bigler, 08/19/2007

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