C++ (Cpp) Raster::getValueAtPoint Examples

Example #1

File: DirectConditionGenerator.cpp Project: Yonghui56/ogs6

const std::vector< std::pair<std::size_t,double> >& DirectConditionGenerator::directToSurfaceNodes(const MeshLib::Mesh &mesh, const std::string &filename)
{
    if (_direct_values.empty())
    {
        GeoLib::Raster* raster (GeoLib::IO::AsciiRasterInterface::readRaster(filename));
        if (! raster) {
            ERR("Error in DirectConditionGenerator::directToSurfaceNodes() - could not load raster file.");
            return _direct_values;
        }

        const MathLib::Vector3 dir(0,0,-1);
        const std::vector<GeoLib::Point*> surface_nodes(MeshLib::MeshSurfaceExtraction::getSurfaceNodes(mesh, dir, 90) );
        const std::size_t nNodes(surface_nodes.size());
        const double no_data (raster->getHeader().no_data);
        _direct_values.reserve(nNodes);
        for (std::size_t i=0; i<nNodes; i++)
        {
            double val (raster->getValueAtPoint(*surface_nodes[i]));
            val = (val == no_data) ? 0 : val;
            _direct_values.push_back (std::pair<std::size_t, double>(surface_nodes[i]->getID(), val));
        }
        delete raster;
    }
    else
        ERR("Error in DirectConditionGenerator::directToSurfaceNodes() - Data vector contains outdated values.");

    return _direct_values;
}

Example #2

File: DirectConditionGenerator.cpp Project: XRuiWang/ogs

const std::vector< std::pair<size_t,double> >& DirectConditionGenerator::directWithSurfaceIntegration(MeshLib::Mesh &mesh, const std::string &filename, double scaling)
{
	if (_direct_values.empty())
	{
		GeoLib::Raster* raster (GeoLib::Raster::readRaster(filename));
		if (!raster) {
			ERR("Error in DirectConditionGenerator::directWithSurfaceIntegration() - could not load raster file.");
			return _direct_values;
		}

		const MathLib::Vector3 dir(0,0,-1);
		MeshLib::Mesh* sfc_mesh (MeshLib::MeshSurfaceExtraction::getMeshSurface(mesh, dir, true));
		std::vector<double> node_area_vec;
		MeshLib::MeshSurfaceExtraction::getSurfaceAreaForNodes(*sfc_mesh, node_area_vec);
		const std::vector<MeshLib::Node*> &surface_nodes (sfc_mesh->getNodes());
		const size_t nNodes(sfc_mesh->getNNodes());
		const double no_data (raster->getNoDataValue());
		_direct_values.reserve(nNodes);
		for (size_t i=0; i<nNodes; ++i)
		{
			double val (raster->getValueAtPoint(*surface_nodes[i]));
			val = (val == no_data) ? 0 : ((val*node_area_vec[i])/scaling);
			_direct_values.push_back (std::pair<size_t, double>(surface_nodes[i]->getID(), val));
		}

		delete raster;
	}
	else
		std::cout << "Error in DirectConditionGenerator::directWithSurfaceIntegration() - Data vector contains outdated values..." << std::endl;

	return _direct_values;
}