DataDimensionsList CartesianGrid::calculateGrid(
const DataDimensionsList& rawDataDimensions ) const
{
Q_ASSERT_X ( rawDataDimensions.count() == 2, "CartesianGrid::calculateGrid",
"Error: calculateGrid() expects a list with exactly two entries." );
CartesianCoordinatePlane* plane = dynamic_cast<CartesianCoordinatePlane*>( mPlane );
Q_ASSERT_X ( plane, "CartesianGrid::calculateGrid",
"Error: PaintContext::calculatePlane() called, but no cartesian plane set." );
DataDimensionsList l( rawDataDimensions );
// rule: Returned list is either empty, or it is providing two
// valid dimensions, complete with two non-Zero step widths.
if( isBoundariesValid( l ) ) {
const QPointF translatedBottomLeft( plane->translateBack( plane->geometry().bottomLeft() ) );
const QPointF translatedTopRight( plane->translateBack( plane->geometry().topRight() ) );
//qDebug() << "CartesianGrid::calculateGrid() first:" << l.first().start << l.first().end << " last:" << l.last().start << l.last().end;
//qDebug() << "CartesianGrid::calculateGrid() translated x:" << translatedBottomLeft.x() << translatedTopRight.x() << " y:" << translatedBottomLeft.y() << translatedTopRight.y();
//qDebug() << "CartesianGrid::calculateGrid() raw data y-range :" << l.last().end - l.last().start;
//qDebug() << "CartesianGrid::calculateGrid() translated y-range:" << translatedTopRight.y() - translatedBottomLeft.y();
/* Code is obsolete. The dataset dimension of the diagram should *never* be > 1.
if( l.first().isCalculated
&& plane->autoAdjustGridToZoom()
&& plane->axesCalcModeX() == CartesianCoordinatePlane::Linear
&& plane->zoomFactorX() > 1.0 )
{
l.first().start = translatedBottomLeft.x();
l.first().end = translatedTopRight.x();
}
*/
const GridAttributes gridAttrsX( plane->gridAttributes( Qt::Horizontal ) );
const GridAttributes gridAttrsY( plane->gridAttributes( Qt::Vertical ) );
const DataDimension dimX
= calculateGridXY( l.first(), Qt::Horizontal,
gridAttrsX.adjustLowerBoundToGrid(),
gridAttrsX.adjustUpperBoundToGrid() );
if( dimX.stepWidth ){
//qDebug("CartesianGrid::calculateGrid() l.last().start: %f l.last().end: %f", l.last().start, l.last().end);
//qDebug(" l.first().start: %f l.first().end: %f", l.first().start, l.first().end);
// one time for the min/max value
const DataDimension minMaxY
= calculateGridXY( l.last(), Qt::Vertical,
gridAttrsY.adjustLowerBoundToGrid(),
gridAttrsY.adjustUpperBoundToGrid() );
if( plane->autoAdjustGridToZoom()
&& plane->axesCalcModeY() == CartesianCoordinatePlane::Linear
&& plane->zoomFactorY() > 1.0 )
{
l.last().start = translatedBottomLeft.y();
l.last().end = translatedTopRight.y();
}
// and one other time for the step width
const DataDimension dimY
= calculateGridXY( l.last(), Qt::Vertical,
gridAttrsY.adjustLowerBoundToGrid(),
gridAttrsY.adjustUpperBoundToGrid() );
if( dimY.stepWidth ){
l.first().start = dimX.start;
l.first().end = dimX.end;
l.first().stepWidth = dimX.stepWidth;
l.first().subStepWidth = dimX.subStepWidth;
l.last().start = minMaxY.start;
l.last().end = minMaxY.end;
l.last().stepWidth = dimY.stepWidth;
l.last().subStepWidth = dimY.subStepWidth;
//qDebug() << "CartesianGrid::calculateGrid() final grid y-range:" << l.last().end - l.last().start << " step width:" << l.last().stepWidth << endl;
// calculate some reasonable subSteps if the
// user did not set the sub grid but did set
// the stepWidth.
// FIXME (Johannes)
// the last (y) dimension is not always the dimension for the ordinate!
// since there's no way to check for the orientation of this dimension here,
// we cannot automatically assume substep values
//if ( dimY.subStepWidth == 0 )
// l.last().subStepWidth = dimY.stepWidth/2;
//else
// l.last().subStepWidth = dimY.subStepWidth;
}
}
}
//qDebug() << "CartesianGrid::calculateGrid() final grid Y-range:" << l.last().end - l.last().start << " substep width:" << l.last().subStepWidth;
//qDebug() << "CartesianGrid::calculateGrid() final grid X-range:" << l.first().end - l.first().start << " substep width:" << l.first().subStepWidth;
return l;
}
