Ogre::Sphere EditSphere::scaleSphere(const Ogre::Sphere _sp, const double scale)
{
Ogre::Sphere sp = _sp;
sp.setCenter(sp.getCenter()/scale);
sp.setRadius(sp.getRadius()/scale);
return sp;
}
BOOL CCamera_Scene::_IsValidEye(
const Fairy::TerrainData* pTerrainData, //地形数据
const fVector3& fvEye, //眼睛点
FLOAT fCameraNearDis) //近距离
{
//近距碰撞球
Ogre::Sphere ballNear;
ballNear.setCenter(Ogre::Vector3(fvEye.x, fvEye.y, fvEye.z));
ballNear.setRadius(fCameraNearDis);
CAMERA_INTER_GRIDS gridsTerrain;
if(!_GetInterPatch(
pTerrainData,
fvEye,
gridsTerrain))
{
//眼睛在地形外面
return TRUE;
}
//近距球是否在地形下面
for(INT i=0; i<(INT)gridsTerrain.m_fvGrid.size(); i++)
{
const Ogre::AxisAlignedBox& theGridBox = gridsTerrain.m_fvGrid[i];
//是否相交
if(Ogre::Math::intersects(ballNear, theGridBox)) return FALSE;
}
return TRUE;
}