// Loads the selected scene
HRESULT LoadScene()
{
memset( g_strRawDEMDataFile, 0, sizeof(g_strRawDEMDataFile) );
memset( g_strEncodedRQTTriangFile, 0, sizeof(g_strEncodedRQTTriangFile) );
// Get selected config file
int iSelectedConfigFile = 0;
// Parse the config file
if( FAILED(ParseConfigurationFile( g_ConfigFiles[iSelectedConfigFile].c_str() )) )
{
//LOG_ERROR(_T("Failed to load config file %s"), g_ConfigFiles[iSelectedConfigFile].c_str() );
return E_FAIL;
}
g_TerrainRenderParams.m_fElevationSamplingInterval = g_fElevationSamplingInterval;
// Create data source
try
{
g_pElevDataSource.reset( new CElevationDataSource(g_strRawDEMDataFile, g_iPatchSize) );
}
catch(const std::exception &)
{
LOG_ERROR(_T("Failed to create elevation data source"));
return E_FAIL;
}
g_TerrainRenderParams.m_iNumLevelsInPatchHierarchy = g_pElevDataSource->GetNumLevelsInHierarchy();
g_TerrainRenderParams.m_fGlobalMinElevation = g_pElevDataSource->GetGlobalMinElevation() * g_fElevationScale ;
g_TerrainRenderParams.m_fGlobalMaxElevation = g_pElevDataSource->GetGlobalMaxElevation() * g_fElevationScale ;
g_TerrainRenderParams.m_iPatchSize = g_pElevDataSource->GetPatchSize();
g_TerrainRenderParams.m_fElevationScale = g_fElevationScale;
return S_OK;
}
void App::UpdateSNBTerrain()
{
if (!terrainload_) return;
ActiveCam_->getFrom((float*)g_CameraPos);
ActiveCam_->getTo((float*)g_CameraLookAt);
// Currently intersections with the base mesh are not supported
D3DXVECTOR3 StartPoint;
StartPoint.x = g_CameraPos.x;
StartPoint.y = g_pElevDataSource->GetGlobalMinElevation()*g_fElevationScale - g_fElevationSamplingInterval;
StartPoint.z = g_CameraPos.z;
float DistToSurface = 0.f;
g_TerrainDX11Render.RayCast(StartPoint, D3DXVECTOR3(0,1,0), &DistToSurface);
float fTerrainHeightUnderCamera = StartPoint.y + DistToSurface;
float fMinimalDistToSurfae = max(ActiveCam_->GetNear() *2, g_fElevationSamplingInterval * 5.f);
fTerrainHeightUnderCamera += fMinimalDistToSurfae;
if( g_CameraPos.y < fTerrainHeightUnderCamera )
{
g_CameraPos.y = Min(3000.f, fTerrainHeightUnderCamera);
D3DXVECTOR3 dir;
ActiveCam_->getDir((float*)dir);
g_CameraLookAt = g_CameraPos + dir;
//g_Camera.SetViewParams( &g_CameraPos, &g_CameraLookAt );
ActiveCam_->setFrom((float*)g_CameraPos);
ActiveCam_->setTo((float*)g_CameraLookAt);
ActiveCam_->computeModelView();
}
BaseCamera* pCam = GetApp()->ActiveCam_;
//D3DXMATRIX mProj;
//D3DXMATRIX mView;
//const unsigned int size16 = sizeof(float) * 16;
//memcpy(&mView, pCam->getViewMatrix(), size16);
//memcpy(&mProj, pCam->getProjectionMatrix(), size16);
g_TerrainDX11Render.UpdateModel( g_CameraPos, pCam->getProjectionMatrix() );
}
