void
ChartRenderer::ScaleYFromData(const LeastSquares &lsdata)
{
if (lsdata.IsEmpty())
return;
if (y.unscaled) {
y.min = lsdata.GetMinY();
y.max = lsdata.GetMaxY();
y.unscaled = false;
} else {
y.min = std::min(y.min, lsdata.GetMinY());
y.max = std::max(y.max, lsdata.GetMaxY());
}
if (lsdata.HasResult()) {
auto y0 = lsdata.GetYAtMinX();
auto y1 = lsdata.GetYAtMaxX();
y.min = std::min({y.min, y0, y1});
y.max = std::max({y.max, y0, y1});
}
if (fabs(y.max - y.min) > 50) {
y.scale = (y.max - y.min);
if (y.scale > 0)
y.scale = (rc.bottom - rc.top - padding_bottom) / y.scale;
} else {
y.scale = 2000;
}
}
void
ChartRenderer::ScaleXFromData(const LeastSquares &lsdata)
{
if (lsdata.IsEmpty())
return;
if (x.unscaled) {
x.min = lsdata.GetMinX();
x.max = lsdata.GetMaxX();
x.unscaled = false;
} else {
x.min = std::min(x.min, lsdata.GetMinX());
x.max = std::max(x.max, lsdata.GetMaxX());
}
x.scale = (x.max - x.min);
if (x.scale > 0)
x.scale = (rc.right - rc.left - padding_left) / x.scale;
}