Renamed osghangglide demo.

src/Demos/osghangglide/base.cpp

@@ -0,0 +1,78 @@
+#include <math.h>
+
+#include <osg/Geode>
+#include <osg/Geometry>
+#include <osg/Texture>
+#include <osg/TexEnv>
+#include <osg/Depth>
+#include <osg/StateSet>
+
+#include <osgDB/ReadFile>
+
+using namespace osg;
+
+Node *makeBase( void )
+{
+    int i, c;
+    float theta;
+    float ir = 20.0f;
+
+    Vec3Array *coords = new Vec3Array(19);
+    Vec2Array *tcoords = new Vec2Array(19);
+    Vec4Array *colors = new Vec4Array(1);
+
+    (*colors)[0].set(1.0f,1.0f,1.0f,1.0f);
+
+    c = 0;
+    (*coords)[c].set(0.0f,0.0f,0.0f);
+    (*tcoords)[c].set(0.0f,0.0f);
+    
+    for( i = 0; i <= 18; i++ )
+    {
+        theta = osg::DegreesToRadians((float)i * 20.0);
+
+        (*coords)[c].set(ir * cosf( theta ), ir * sinf( theta ), 0.0f);
+        (*tcoords)[c].set((*coords)[c][0]/36.0f,(*coords)[c][1]/36.0f);
+
+        c++;
+    }
+
+    Geometry *geom = new Geometry;
+
+    geom->setVertexArray( coords );
+
+    geom->setTexCoordArray( 0, tcoords );
+
+    geom->setColorArray( colors );
+    geom->setColorBinding( Geometry::BIND_OVERALL );
+
+    geom->addPrimitive( new DrawArrays(Primitive::TRIANGLE_FAN,0,19) );
+
+    Texture *tex = new Texture;
+
+    tex->setImage(osgDB::readImageFile("Images/water.rgb"));
+    tex->setWrap( Texture::WRAP_S, Texture::REPEAT );
+    tex->setWrap( Texture::WRAP_T, Texture::REPEAT );
+
+    StateSet *dstate = new StateSet;
+    dstate->setMode( GL_LIGHTING, StateAttribute::OFF );
+    dstate->setTextureAttributeAndModes(0, tex, StateAttribute::ON );
+
+    dstate->setTextureAttribute(0, new TexEnv );
+
+    // clear the depth to the far plane.
+    osg::Depth* depth = new osg::Depth;
+    depth->setFunction(osg::Depth::ALWAYS);
+    depth->setRange(1.0,1.0);   
+    dstate->setAttributeAndModes(depth,StateAttribute::ON );
+
+    dstate->setRenderBinDetails(-1,"RenderBin");
+
+
+    geom->setStateSet( dstate );
+
+    Geode *geode = new Geode;
+    geode->addDrawable( geom );
+
+    return geode;
+}