std::vector<std::vector<Point2> > createGrid( const OfxRectD& rod, const unsigned int nbTiles, const Point2& scale, const Point2& center, const unsigned int steps = 50 )
{
// Point2 rodCorner( rod.x1, rod.y1 );
Point2 rodSize( rod.x2 - rod.x1, rod.y2 - rod.y1 );
const unsigned int size = nbTiles + 1; // number of lines
const double stepSize = rodSize.x / (double) steps;
const double tileSize = rodSize.x / (double) nbTiles;
const double halfSize = rodSize.x / 2.0;
const double yShift = ( rodSize.x - rodSize.y ) / 2.0; // vertical shift (because it's a squared grid)
const Point2 pixCenter = ( center * rodSize.x ); // center in pixel coordinates
std::vector<std::vector<Point2> > lines;
lines.reserve( 2 * size );
for( unsigned int i = 0; i < size; ++i )
{
std::vector<Point2> horizontal, vertical;
horizontal.reserve( steps );
vertical.reserve( steps );
for( unsigned int j = 0; j <= steps; ++j )
{
double si = ( i * tileSize ) - halfSize;
Point2 diagonal( si * scale.x + halfSize + pixCenter.x, si * scale.y + halfSize + pixCenter.y - yShift );
double sj = ( j * stepSize ) - halfSize;
horizontal.push_back( Point2( sj * scale.x + halfSize + pixCenter.x, diagonal.y ) );
vertical.push_back( Point2( diagonal.x, sj * scale.y + halfSize + pixCenter.y - yShift ) );
}
lines.push_back( horizontal );
lines.push_back( vertical );
}
return lines;
}
Point2 getPoint() const
{
OfxRectD rod = this->_frame.getFrame(this->getTime());
Point2 rodSize(rod.x2 - rod.x1, rod.y2 - rod.y1);
Point2 relativePoint = _relativePoint.getPoint();
Point2 paramPoint = ofxToGil(this->_param.getValue());
Point2 point = pointConvertCoordinateSystem<notCenteredCoord, eCoordinateSystemXY>(paramPoint, rodSize);
Point2 res = relativePoint + point;
return res;
}
void setPoint(const Scalar x, const Scalar y)
{
if(_relativePoint.getSelected())
return;
if(this->_frame.isEnabled())
{
OfxRectD rod = this->_frame.getFrame(this->getTime());
Point2 rodSize(rod.x2 - rod.x1, rod.y2 - rod.y1);
Point2 point = pointConvertCoordinateSystem<eCoordinateSystemXY, notCenteredCoord>(Point2(x, y), rodSize);
Point2 relativePoint =
pointConvertCoordinateSystem<eCoordinateSystemXY, notCenteredCoord>(_relativePoint.getPoint(), rodSize);
this->_param.setValue(point.x - relativePoint.x, point.y - relativePoint.y);
return;
}
this->_param.setValue(0, 0);
}
