Method _initRender

Engine/source/environment/skySphere.cpp:316–580

}

void SkySphere::_initRender()
{
   U32 rings = 32;
   U32 height = 16;
   U32 radius = 1;

   F32 x, y, z, xy;                              // vertex position
   F32 nx, ny, nz, lengthInv = 1.0f / radius;       // normal
   F32 s, t;                                     // texCoord

   F32 ringStep = M_2PI / rings;
   F32 heightStep = M_PI / height; // M_HALFPI for dome.
   F32 ringAng, heightAng;

   //clear vecs
   clearVectors();

   for (U32 i = 0; i <= height; ++i)
   {
      heightAng = M_PI / 2 - (F32)i * heightStep;
      F32 xy = radius * mCos(heightAng);
      F32 z = radius * mSin(heightAng);

      for (U32 j = 0; j <= rings; ++j)
      {
         SphereVertex vert;
         ringAng = j * ringStep;
         x = xy * mCos(ringAng);
         y = xy * mSin(ringAng);
         vert.pos.set(Point3F(x,y,z));

         nx = x * lengthInv;
         ny = y * lengthInv;
         nz = z * lengthInv;
         vert.nor.set(Point3F(nx, ny, nz));

         s = (F32)j / rings;
         t = (F32)i / height;
         vert.s = s;
         vert.t = t;

         tmpVertices.push_back(vert);
      }
   }

   SphereVertex v1, v2, v3, v4;
   U32 vi1, vi2 = 0;

   for (U32 i = 0; i < height; ++i)
   {
      vi1 = i * (rings + 1);
      vi2 = (i + 1) * (rings + 1);

      for (U32 j = 0; j < rings; ++j, ++vi1, ++vi2)
      {
         v1 = tmpVertices[vi1];
         v2 = tmpVertices[vi2];
         v3 = tmpVertices[vi1 + 1];