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New Y axis label algorithm for finance graphs.

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This commit is contained in:
Michael Bernardi
2024-08-03 02:02:06 +10:00
parent 82f658963f
commit 5742577c95
1 changed files with 10 additions and 6 deletions
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16
src/openrct2-ui/windows/Finances.cpp
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@@ -856,19 +856,23 @@ static Widget _windowFinancesResearchWidgets[] =
INSET_RECT_FLAG_FILL_DONT_LIGHTEN | INSET_RECT_FLAG_BORDER_NONE);
// Calculate Y axis max and min.
// This is how the original code does it. Could be improved.
money64 max = centred ? 12.00_GBP : 24.00_GBP;
money64 maxVal = 0;
for (int32_t i = 0; i < kGraphNumPoints; i++)
{
auto val = series[i];
if (val == kMoney64Undefined)
continue;
while (std::abs(val) > max)
max *= 2;
while (std::abs(val) > maxVal)
maxVal = val;
}
const money64 min = centred ? -max : 0.00_GBP;
// This algorithm increments the leading digit of the max and sets all other digits to zero.
// e.g. 681 => 700.
money64 oom = 10;
while (maxVal / oom >= 10)
oom *= 10;
const money64 max = ((maxVal + oom - 1) / oom) * oom;
_graphProps.min = min;
_graphProps.min = centred ? -max : 0.00_GBP;
_graphProps.max = max;
_graphProps.series = series;