Method addToPlotList4FD200

src/OpenLoco/src/Paint/Paint.cpp:263–333

0x004FD200

    // 0x004FD200
    PaintStruct* PaintSession::addToPlotList4FD200(ImageId imageId, const World::Pos3& offset, const World::Pos3& boundBoxOffset, const World::Pos3& boundBoxSize)
    {
        _lastPS = nullptr;

        auto* ps = createNormalPaintStruct(imageId, offset, boundBoxOffset, boundBoxSize);
        if (ps == nullptr)
        {
            return nullptr;
        }

        const auto rtLeft = getRenderTarget()->x;
        const auto rtRight = getRenderTarget()->x + getRenderTarget()->width;

        auto newMins = ps->bounds.mins;
        // The following uses the fact that gameToScreen calculates the
        // screen x to be y - x of the map coordinate. It is then back
        // calculating the x and y so that they would within the render
        // target size when converted.
        switch (getRotation())
        {
            case 0:
                if (newMins.y - newMins.x < rtLeft)
                {
                    newMins.y = newMins.x + rtLeft;
                }

                if (newMins.y - newMins.x > rtRight)
                {
                    newMins.x = newMins.y - rtRight;
                }
                break;
            case 1:
                if (-newMins.y - newMins.x < rtLeft)
                {
                    newMins.x = -newMins.y - rtLeft;
                }

                if (-newMins.y - newMins.x > rtRight)
                {
                    newMins.y = -newMins.x - rtRight;
                }
                break;
            case 2:
                if (-newMins.y + newMins.x < rtLeft)
                {
                    newMins.y = newMins.x - rtLeft;
                }

                if (-newMins.y + newMins.x > rtRight)
                {
                    newMins.x = newMins.y + rtRight;
                }
                break;
            case 3:
                if (newMins.y + newMins.x < rtLeft)
                {
                    newMins.x = -newMins.y + rtLeft;
                }