Function paintEdgeSection

src/OpenLoco/src/Paint/PaintSurface.cpp:1198–1209

    constexpr std::array<uint8_t, 4> kCliffEdgeToTunnelEdge = { 2, 1, 3, 0 };

    static void paintEdgeSection(PaintSession& session, uint32_t cliffEdgeImageBase, uint32_t factor, MicroZ height, uint8_t edge, uint32_t edgeSlopeMaskImageIndex)
    {
        const auto image = ImageId(cliffEdgeImageBase).withIndexOffset(factor + (height & 0xF));
        const World::Pos3 offset = kEdgeImageOffset[edge] + World::Pos3(0, 0, height * kMicroZStep);
        const World::Pos3 boundBoxSize = kEdgeBoundingBoxSize[edge];
        auto* ps = session.addToPlotListAsParent(image, offset, boundBoxSize);
        if (ps != nullptr)
        {
            ps->flags |= PaintStructFlags::hasMaskedImage;
            ps->maskedImageId = ImageId(edgeSlopeMaskImageIndex);
        }
    }

    static void paintSurfaceCliffEdgeImpl(PaintSession& session, uint8_t edge, int16_t baseHeight, const EdgeHeight& edgeHeight, uint32_t cliffEdgeImageBase)
    {