/// \brief Set the BasePoint value at a given base point coordinate.
///
/// Set the BasePoint value for the given coordinate on the base
/// point grid.
/// If inserting this BasePoint completes the set of points required
/// to define one or more Segment objects which were not yet defined,
/// new Segment objects are created. If this replaces a point for one
/// or more Segment objects that were already defined, the contents of
/// those Segment objects are invalidated.
/// @param x coordinate on the base point grid.
/// @param y coordinate on the base point grid.
/// @param z BasePoint value to be used at the given coordinate.
void Terrain::setBasePoint(int x, int y, const BasePoint& z)
{
m_basePoints[x][y] = z;
bool pointIsSet[3][3];
BasePoint existingPoint[3][3];
for(int i = x - 1, ri = 0; i < x + 2; ++i, ++ri) {
for(int j = y - 1, rj = 0; j < y + 2; ++j, ++rj) {
pointIsSet[ri][rj] = getBasePoint(i, j, existingPoint[ri][rj]);
}
}
for(int i = x - 1, ri = 0; i < x + 1; ++i, ++ri) {
for(int j = y - 1, rj = 0; j < y + 1; ++j, ++rj) {
Segment * s = getSegment(i, j);
if (s == 0) {
bool complete = pointIsSet[ri][rj] &&
pointIsSet[ri + 1][rj + 1] &&
pointIsSet[ri + 1][rj] &&
pointIsSet[ri][rj + 1];
if (!complete) {
continue;
}
s = new Segment(i * m_res, j * m_res, m_res);
Matrix<2, 2, BasePoint> & cp = s->getControlPoints();
float min = existingPoint[ri][rj].height();
float max = existingPoint[ri][rj].height();
for(unsigned int k = 0; k < 2; ++k) {
for(unsigned int l = 0; l < 2; ++l) {
cp(k, l) = existingPoint[ri + k][rj + l];
min = std::min(cp(k, l).height(), min);
max = std::max(cp(k, l).height(), max);
}
}
s->setMinMax(min, max);
Effectorstore::iterator I = m_effectors.begin();
Effectorstore::iterator Iend = m_effectors.end();
for (; I != Iend; ++I) {
I->first->addToSegment(*s);
}
// apply shaders last, after all other data is in place
if (isShaded()) {
addSurfaces(*s);
}
m_segments[i][j] = s;
continue;
}
s->setCornerPoint(ri ? 0 : 1, rj ? 0 : 1, z);
}
}
}
/// \brief Set the BasePoint value at a given base point coordinate.
///
/// Set the BasePoint value for the given coordinate on the base
/// point grid.
/// If inserting this BasePoint completes the set of points required
/// to define one or more Segment objects which were not yet defined,
/// new Segment objects are created. If this replaces a point for one
/// or more Segment objects that were already defined, the contents of
/// those Segment objects are invalidated.
/// @param x coordinate on the base point grid.
/// @param z coordinate on the base point grid.
/// @param y BasePoint value to be used at the given coordinate.
void Terrain::setBasePoint(int x, int z, const BasePoint& y)
{
m_basePoints[x][z] = y;
bool pointIsSet[3][3];
BasePoint existingPoint[3][3];
for(int i = x - 1, ri = 0; i < x + 2; ++i, ++ri) {
for(int j = z - 1, rj = 0; j < z + 2; ++j, ++rj) {
pointIsSet[ri][rj] = getBasePoint(i, j, existingPoint[ri][rj]);
}
}
for(int i = x - 1, ri = 0; i < x + 1; ++i, ++ri) {
for(int j = z - 1, rj = 0; j < z + 1; ++j, ++rj) {
Segment * s = getSegmentAtIndex(i, j);
if (s == 0) {
bool complete = pointIsSet[ri][rj] &&
pointIsSet[ri + 1][rj + 1] &&
pointIsSet[ri + 1][rj] &&
pointIsSet[ri][rj + 1];
if (!complete) {
continue;
}
s = new Segment(i * m_res, j * m_res, m_res);
Matrix<2, 2, BasePoint> & cp = s->getControlPoints();
for(unsigned int k = 0; k < 2; ++k) {
for(unsigned int l = 0; l < 2; ++l) {
cp(k, l) = existingPoint[ri + k][rj + l];
}
}
for (auto& entry : m_terrainMods) {
const TerrainMod* terrainMod = std::get<0>(entry.second);
if (terrainMod->checkIntersects(*s)) {
s->updateMod(entry.first, terrainMod);
}
}
// apply shaders last, after all other data is in place
if (isShaded()) {
addSurfaces(*s);
}
m_segments[i][j] = s;
continue;
}
s->setCornerPoint(ri ? 0 : 1, rj ? 0 : 1, y);
}
}
}