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Moving altitude chart diagram to the middle of the canvas.

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This commit is contained in:
Vladimir Byko-Ianko 2016-09-12 15:08:04 +03:00
parent 860c80b1c7
commit 147c26b2de
1 changed files with 9 additions and 1 deletions
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10
map/chart_generator.cpp
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@ -166,10 +166,18 @@ bool GenerateYAxisChartData(uint32_t height, double minMetersPerPxl,
return false;
}
double const freeHeightSpacePxl = drawHeightPxl - deltaAltM / metersPerPxl;
if (freeHeightSpacePxl < 0 || freeHeightSpacePxl > drawHeightPxl)
{
LOG(LERROR, ("freeHeightSpacePxl is out of the range [0, drawHeightPxl]."));
return false;
}
double const shift = heightIndentPxl + freeHeightSpacePxl / 2.0;
size_t const altitudeDataSize = altitudeDataM.size();
yAxisDataPxl.resize(altitudeDataSize);
for (size_t i = 0; i < altitudeDataSize; ++i)
yAxisDataPxl[i] = height - heightIndentPxl - (altitudeDataM[i] - minAltM) / metersPerPxl;
yAxisDataPxl[i] = height - shift - (altitudeDataM[i] - minAltM) / metersPerPxl;
return true;
}