How to make this kind of transition?
From lower and higher to flat surface smooth without creasing or pinching? I triedy to merge the end but I get deformations.
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The answer to this problem is infallible, albeit extremely tedious: the thorough study of topology.
I'd recommend you start with this blog, a valuable resource.
For this specific situation, two basic rules apply.
- quads should be as square as possible
- quads should be evenly sized
- quads should be evenly distributed
Everything else will produce pinching, which you want but only at the sharp ridge. At that position I will use some rectangles.
Use a (shiny, reflective) matcap with lots of details for previewing.
My topology suggestion is not perfect, at extreme angles the reflections show the disturbance in the underlying structure. It should be improved.
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Another approach would be to move the Cursor to the top edge loop as shown here. Select the Edge Loop and press SHFT + "S" > Cursor to selected.
Then change to Pivot Point to 3D Cursor.
Select the inner vertices and rotate.Press "R" and The axis to rotate on. Here it's "X". So "R" + "X".
Here it is with a Subsurf Modifier and Smooth Shading and some additional Edge Loops to tighten up the edges.
