/**
* Set the boundary type for specific block boundary.
*
* @param i_edge location of the edge relative to the SWE_block.
* @param i_boundaryType type of the boundary condition.
* @param i_inflow pointer to an SWE_Block1D, which specifies the inflow (should be NULL for WALL or OUTFLOW boundary)
*/
void SWE_Block::setBoundaryType( const BoundaryEdge i_edge,
const BoundaryType i_boundaryType,
const SWE_Block1D* i_inflow) {
boundary[i_edge] = i_boundaryType;
neighbour[i_edge] = i_inflow;
// set bathymetry values in the ghost layer, if necessary
for(int j=0; j<=ny+1; j++) {
if( boundary[BND_LEFT] == OUTFLOW || boundary[BND_LEFT] == WALL ) {
b[0][j] = b[1][j];
}
if( boundary[BND_RIGHT] == OUTFLOW || boundary[BND_RIGHT] == WALL ) {
b[nx+1][j] = b[nx][j];
}
}
for(int i=0; i<=nx+1; i++) {
if( boundary[BND_BOTTOM] == OUTFLOW || boundary[BND_BOTTOM] == WALL ) {
b[i][0] = b[i][1];
}
if( boundary[BND_TOP] == OUTFLOW || boundary[BND_TOP] == WALL ) {
b[i][ny+1] = b[i][ny];
}
}
// synchronize after an external update of the bathymetry
synchBathymetryAfterWrite();
}
/**
* Sets the bathymetry on OUTFLOW or WALL boundaries.
* Should be called very time a boundary is changed to a OUTFLOW or
* WALL boundary <b>or</b> the bathymetry changes.
*/
void SWE_Block::setBoundaryBathymetry()
{
// set bathymetry values in the ghost layer, if necessary
if( boundary[BND_LEFT] == OUTFLOW || boundary[BND_LEFT] == WALL ) {
memcpy(b[0], b[1], sizeof(float)*(ny+2));
}
if( boundary[BND_RIGHT] == OUTFLOW || boundary[BND_RIGHT] == WALL ) {
memcpy(b[nx+1], b[nx], sizeof(float)*(ny+2));
}
if( boundary[BND_BOTTOM] == OUTFLOW || boundary[BND_BOTTOM] == WALL ) {
for(int i=0; i<=nx+1; i++) {
b[i][0] = b[i][1];
}
}
if( boundary[BND_TOP] == OUTFLOW || boundary[BND_TOP] == WALL ) {
for(int i=0; i<=nx+1; i++) {
b[i][ny+1] = b[i][ny];
}
}
// set corner values
b[0][0] = b[1][1];
b[0][ny+1] = b[1][ny];
b[nx+1][0] = b[nx][1];
b[nx+1][ny+1] = b[nx][ny];
// synchronize after an external update of the bathymetry
synchBathymetryAfterWrite();
}
/**
* set Bathymetry b in all grid cells (incl. ghost/boundary layers)
* using the specified bathymetry function;
* bathymetry source terms are re-computed
*/
void SWE_Block::setBathymetry(float (*_b)(float, float)) {
for(int i=0; i<nx+2*nghosts; i++)
for(int j=0; j<ny+2*nghosts; j++)
b[i][j] = _b(offsetX + (i-nghosts+0.5f)*dx, offsetY + (j-nghosts+0.5f)*dy);
synchBathymetryAfterWrite();
}
/**
* set Bathymetry b in all grid cells (incl. ghost/boundary layers)
* to a uniform value
* bathymetry source terms are re-computed
*/
void SWE_Block::setBathymetry(float _b) {
for(int i=0; i<nx+2*nghosts; i++)
for(int j=0; j<ny+2*nghosts; j++)
b[i][j] = _b;
synchBathymetryAfterWrite();
}
/**
* set Bathymetry b in all grid cells (incl. ghost/boundary layers)
* using the specified bathymetry function;
* bathymetry source terms are re-computed
*/
void SWE_Block::setBathymetry(float (*_b)(float, float)) {
for(int i=0; i<=nx+1; i++)
for(int j=0; j<=ny+1; j++)
b[i][j] = _b(offsetX + (i-0.5f)*dx, offsetY + (j-0.5f)*dy);
synchBathymetryAfterWrite();
}
/**
* set Bathymetry b in all grid cells (incl. ghost/boundary layers)
* to a uniform value
* bathymetry source terms are re-computed
*/
void SWE_Block::setBathymetry(float _b) {
for(int i=0; i<=nx+1; i++)
for(int j=0; j<=ny+1; j++)
b[i][j] = _b;
synchBathymetryAfterWrite();
}
/**
* set boundary type for a specific block boundary
* @param edge specifies boundary (LEFT, RIGHT, BOTTOM, TOP)
* @param boundtype type of boundary condition
* @param inflow pointer to an SWE_block1D that specifies
* inflow (should be NULL for WALL or OUTFLOW boundary)
*/
void SWE_Block::setBoundaryType(BoundaryEdge edge, BoundaryType boundtype,
const SWE_BlockGhost* inflow) {
boundary[edge] = boundtype;
neighbour[edge] = inflow;
// set bathymetry values in the ghost layer, if necessary
for(int j=0; j<ny+2*nghosts; j++) {
if( boundary[BND_LEFT] == OUTFLOW || boundary[BND_LEFT] == WALL ) {
b[nghosts-1][j] = b[nghosts][j];
}
if( boundary[BND_RIGHT] == OUTFLOW || boundary[BND_RIGHT] == WALL ) {
b[nx+nghosts][j] = b[nx+nghosts-1][j];
}
}
for(int i=0; i<nx+2*nghosts; i++) {
if( boundary[BND_BOTTOM] == OUTFLOW || boundary[BND_BOTTOM] == WALL ) {
b[i][nghosts-1] = b[i][nghosts];
}
if( boundary[BND_TOP] == OUTFLOW || boundary[BND_TOP] == WALL ) {
b[i][ny+nghosts] = b[i][ny+nghosts-1];
}
}
// synchronize after an external update of the bathymetry
synchBathymetryAfterWrite();
}
/**
* Update all temporary and non-local (for heterogeneous computing) variables
* after an external update of the main variables h, hu, hv, and b.
*/
void SWE_Block::synchAfterWrite() {
synchWaterHeightAfterWrite();
synchDischargeAfterWrite();
synchBathymetryAfterWrite();
}
