Function drawGraph

src/OpenLoco/src/Ui/Chart.cpp:246–294

0x004CF824

    // 0x004CF824
    void drawGraph(GraphSettings& gs, Window& self, Gfx::DrawingContext& drawingCtx)
    {
        gs.canvasLeft = gs.xOffset + gs.left;
        gs.canvasHeight = gs.height - gs.yOffset;
        gs.canvasBottom = gs.top + gs.height - gs.yOffset;

        int64_t maxValue = graphGetMaxValue(gs);

        // 0x004CFA02

        auto height = gs.canvasHeight;
        if ((gs.flags & GraphFlags::showNegativeValues) != GraphFlags::none)
        {
            height >>= 1;
        }

        // We work out the number of shifts required to bring a 64bit value
        // into something that is within the height range
        gs.numValueShifts = 0;
        for (auto adjustedMaxValue = maxValue; adjustedMaxValue > height; adjustedMaxValue >>= 1)
        {
            gs.numValueShifts++;
        }

        if ((gs.flags & GraphFlags::hideAxesAndLabels) == GraphFlags::none)
        {
            graphDrawAxesAndLabels(gs, self, drawingCtx);
        }

        // 0x004CFD59
        for (auto j = 0; j < 2; j++)
        {
            auto pointFlag = GraphPointFlags(1U << j);
            if ((gs.pointFlags & pointFlag) == GraphPointFlags::none)
            {
                continue;
            }

            for (auto i = 0U; i < gs.lineCount; i++)
            {
                if ((gs.linesToExclude & (1U << i)) != 0)
                {
                    continue;
                }

                drawGraphLineSegments(gs, i, drawingCtx, pointFlag);
            }
        }
    }
}