void TerrainProjectionMarker::FindProjectedTerrainMaterials(Array<string>& matNames)
{
auto& pos = GetPositionAbsolute();
Vector3 orientedSize = Ogre::Quaternion(Ogre::Degree(-90),Ogre::Vector3::UNIT_X) * GetOrientationAbsolute() * Vector3(_halfSize.x, 0.f, _halfSize.y);
// Check which terrain cells are occupied by marker's corners
// ( assume its smaller than terrain cell )
auto map = GameWorld::GlobalWorld->GetMap();
auto terrainGrid = GameWorld::GlobalWorld->GetMap()->GetTerrain()->GetTerrainGrid();
Ogre::Terrain* terrain;
uint32 xMin = (uint32)std::max(0.f, std::min(pos.x - orientedSize.x, pos.x + orientedSize.x));
uint32 xMax = (uint32)std::min(map->GetTerrainSize().x, std::max(pos.x - orientedSize.x, pos.x + orientedSize.x));
uint32 zMin = (uint32)std::max(0.f, std::max(pos.z - orientedSize.y, pos.z + orientedSize.y));
uint32 zMax = (uint32)std::min(map->GetTerrainSize().y, std::max(pos.z - orientedSize.z, pos.z + orientedSize.z));
// Check minimal corner terrain
terrain = terrainGrid->GetTerrainFromPosition(xMin, zMin);
if( _lastProjectedTerrains[0] != terrain )
{
// Terrain cell changed ( or its 1st call )
_lastProjectedTerrains[0] = terrain;
matNames.push_back(terrain->getMaterialName());
}
// Check maximal corner terrain
terrain = terrainGrid->GetTerrainFromPosition(xMax, zMax);
if( _lastProjectedTerrains[0] != terrain )
{
// Marker on multiple cells
if( _lastProjectedTerrains[3] != terrain )
{
_lastProjectedTerrains[3] = terrain;
matNames.push_back(terrain->getMaterialName());
}
terrain = terrainGrid->GetTerrainFromPosition(xMax, zMin);
if( _lastProjectedTerrains[1] != terrain )
{
_lastProjectedTerrains[1] = terrain;
matNames.push_back(terrain->getMaterialName());
}
terrain = terrainGrid->GetTerrainFromPosition(xMin, zMax);
if( _lastProjectedTerrains[2] != terrain )
{
_lastProjectedTerrains[2] = terrain;
matNames.push_back(terrain->getMaterialName());
}
}
else
{
// Max and min corner falls into same cell, so we'll have only one terrain
_lastProjectedTerrains[1] = terrain;
_lastProjectedTerrains[2] = terrain;
_lastProjectedTerrains[3] = terrain;
}
}
void TerrainManager::CreatePhysicsShape(void)
{
Ogre::TerrainGroup::TerrainIterator ti = mTerrainGroup->getTerrainIterator();
while (ti.hasMoreElements())
{
Ogre::Terrain *t = ti.getNext()->instance;
LoadTerrainGeometry(t->getMaterialName(), t->getHeightData(),
t->getSize(), t->getWorldSize(), t->getMinHeight(), t->getMaxHeight(), t->getPosition());
}
}