middle            395 librender/opengl/Renderer_ogl.cpp   point mid = middle(startP, endP);
middle            398 librender/opengl/Renderer_ogl.cpp   point q = middle(mid, controlP);
middle            404 librender/opengl/Renderer_ogl.cpp     trace_curve(startP, middle(startP, controlP), q, coords);
middle            406 librender/opengl/Renderer_ogl.cpp     trace_curve(q, middle(controlP, endP), endP, coords);