void Storage::fixNormal (osg::Vec3f& normal, int cellX, int cellY, int col, int row)
{
while (col >= ESM::Land::LAND_SIZE-1)
{
++cellY;
col -= ESM::Land::LAND_SIZE-1;
}
while (row >= ESM::Land::LAND_SIZE-1)
{
++cellX;
row -= ESM::Land::LAND_SIZE-1;
}
while (col < 0)
{
--cellY;
col += ESM::Land::LAND_SIZE-1;
}
while (row < 0)
{
--cellX;
row += ESM::Land::LAND_SIZE-1;
}
ESM::Land* land = getLand(cellX, cellY);
if (land && land->mDataTypes&ESM::Land::DATA_VNML)
{
normal.x() = land->mLandData->mNormals[col*ESM::Land::LAND_SIZE*3+row*3];
normal.y() = land->mLandData->mNormals[col*ESM::Land::LAND_SIZE*3+row*3+1];
normal.z() = land->mLandData->mNormals[col*ESM::Land::LAND_SIZE*3+row*3+2];
normal.normalize();
}
else
normal = osg::Vec3f(0,0,1);
}
void Storage::averageNormal(osg::Vec3f &normal, int cellX, int cellY, int col, int row)
{
osg::Vec3f n1,n2,n3,n4;
fixNormal(n1, cellX, cellY, col+1, row);
fixNormal(n2, cellX, cellY, col-1, row);
fixNormal(n3, cellX, cellY, col, row+1);
fixNormal(n4, cellX, cellY, col, row-1);
normal = (n1+n2+n3+n4);
normal.normalize();
}