Function DrawSpline

Source/Engine/Level/Actors/Spline.cpp:503–538

    }

    void DrawSpline(Spline* spline, const Color& color, const Transform& transform, bool depthTest, bool scaleByDistance = false)
    {
        const int32 count = spline->Curve.GetKeyframes().Count();
        if (count == 0)
            return;
        Spline::Keyframe* prev = spline->Curve.GetKeyframes().Get();
        Vector3 prevPos = transform.LocalToWorld(prev->Value.Translation);
        Real distance = Vector3::Distance(prevPos, DebugDraw::GetViewPos());
        if (distance < METERS_TO_UNITS(800)) // 800m
        {
            // Bezier curve
            DEBUG_DRAW_WIRE_SPHERE(BoundingSphere(prevPos, NodeSizeByDistance(prevPos, scaleByDistance)), color, 0.0f, depthTest);
            for (int32 i = 1; i < count; i++)
            {
                Spline::Keyframe* next = prev + 1;
                Vector3 nextPos = transform.LocalToWorld(next->Value.Translation);
                DEBUG_DRAW_WIRE_SPHERE(BoundingSphere(nextPos, NodeSizeByDistance(nextPos, scaleByDistance)), color, 0.0f, depthTest);
                const float d = (next->Time - prev->Time) / 3.0f;
                DEBUG_DRAW_BEZIER(prevPos, transform.LocalToWorld(prev->Value.Translation + prev->TangentOut.Translation * d), transform.LocalToWorld(next->Value.Translation + next->TangentIn.Translation * d), nextPos, color, 0.0f, depthTest);
                prev = next;
                prevPos = nextPos;
            }
        }
        else
        {
            // Simplified
            for (int32 i = 1; i < count; i++)
            {
                Spline::Keyframe* next = prev + 1;
                Vector3 nextPos = transform.LocalToWorld(next->Value.Translation);
                DEBUG_DRAW_LINE(prevPos, nextPos, color, 0.0f, depthTest);
                prev = next;
                prevPos = nextPos;
            }
        }
    }
}

void Spline::OnDebugDraw()