i want to create a curve line stick on the bended surface, so i choose Stroke- Curve Function-Frame Mesh to make a frame.But when i use the Topology brush and hold alt to remove the right portion,As a ruselt,it rotate the whole mesh.All of my operating steps is refer to official tutorial vedios of Zbrush4R4,i noticed the curve frame which encase the mesh in tutorial vedios has bunch of green hollow points on it,conversely,my curve frame just has one single green hollow point.I wander whether this factors i metioned impact the result of Topology brush, i also check the Zbrush Docs of Topology Brush,it indicate that the Topology Brush only work for the curve begin on the mesh surface,i didn’t understand what it means for.It makes me crazy, please tell me the way out of this dilemma please.
videos
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mine
in vedios
this is too advanced for me so i can’t really help you but as far as english and the text you highlighted goes.
it’s saying that the “removal curve” has to begin on the model for the operation to work, meaning if the curve does not begin on the model then it will simple rotate.
so from the sound of it, it seems the curve that you are drawing is not beginning on the model.
now which is the removal curve, the one that’s already there or the one you draw to remove the one that’s already there i don’t know.