From Farshid Lashkari, Added ability to read/write the texture tile

settings of osgParticle::Particle to .osg files.

include/osgParticle/Particle

@@ -146,6 +146,15 @@ namespace osgParticle
         /// Get the t texture coordinate of the bottom left of the particle
         inline float getTCoord() const { return _t_coord; }
 
+        /// Get width of texture tile
+        inline int getTileS() const;
+        
+        /// Get height of texture tile
+        inline int getTileT() const;
+        
+        /// Get number of texture tiles
+        inline int getNumTiles() const { return _num_tile; }
+        
         /** Kill the particle on next update
             NOTE: after calling this function, the <CODE>isAlive()</CODE> method will still 
             return true until the particle is updated again.
@@ -396,6 +405,16 @@ namespace osgParticle
         return _prev_angle;
     }
     
+    inline int Particle::getTileS() const
+    {
+        return (_s_tile>0.0f) ? static_cast<int>(1.0f / _s_tile) : 1;
+    }
+
+    inline int Particle::getTileT() const
+    {
+        return (_t_tile>0.0f) ? static_cast<int>(1.0f / _t_tile) : 1;
+    }
+    
     inline void Particle::kill()
     {
         _mustdie = true;

src/osgPlugins/osgParticle/IO_Particle.cpp

@@ -124,6 +124,16 @@ bool  read_particle(osgDB::Input &fr, osgParticle::Particle &P)
                 }
             }
 
+            if (fr[0].matchWord("textureTile")) {
+                int sTile,tTile,numTiles;
+                if (fr[1].getInt(sTile) && fr[2].getInt(tTile) && fr[3].getInt(numTiles)) {
+                    P.setTextureTile(sTile,tTile,numTiles);
+                    fr += 4;
+                    itAdvanced = true;
+                }
+            }
+ 
+
             // interpolators
 
             if (fr[0].matchWord("sizeInterpolator") && fr[1].matchString("{")) {
@@ -206,6 +216,7 @@ void  write_particle(const osgParticle::Particle &P, osgDB::Output &fw)
 
     fw.indent() << "radius " << P.getRadius() << std::endl;
     fw.indent() << "mass " << P.getMass() << std::endl;
+    fw.indent() << "textureTile " << P.getTileS() << " " << P.getTileT() << " " << P.getNumTiles() << std::endl;
 
     // interpolators