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I am trying to make a shade sail with two lower points (for water) for a client in blender, this is basically what i need to do.enter image description here

enter image description here

I've tried proportional editing but it is ineffective and very unsmooth. A cloth simulation with pinned corners doesn't work either. I am relatively new to blender and would appreciate the help :) Thank you!

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    $\begingroup$ Related blender.stackexchange.com/questions/205507/… $\endgroup$ – batFINGER Mar 19 at 12:30
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    $\begingroup$ Define why cloth simulation "doesn't work" as simulation is an often used way to obtain that. $\endgroup$ – Mr Zak Mar 19 at 12:41
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    $\begingroup$ This is because there it becomes "saggy". Maybe there is a way to apply tension to the pinned corners? I'm sorry, I'm very new. $\endgroup$ – TheodorLindberg Mar 19 at 12:46
  • $\begingroup$ You need to add a vertex group and set the vertices you want to stay out of the simulation as pinned in the simulation settings $\endgroup$ – Gorgious Mar 19 at 17:20
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The cloth solution referenced by @batFINGER works for me:

enter image description here

Starting with the two (nearly) straight edges, first, Bridge Edge Loops with settings something like these:

enter image description here

.. and you're nearly there. A bit of Vertex > Smooth-ing on the internal vertices might do. But if you want to, you can finish the stretch with a quick Cloth sim, as shown on the right, above, with settings very similar to those provided as 'Tent' in the referenced answer, and the straight edges pinned throughout, rather than just the corners.

enter image description here

(the sim runs to stability in about 30 frames, in the provided .blend)

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enter image description hereI assume that you have used a big plane with 4 verticies. Subdivide the plane and use proportional editing (press the letter O on the keyboard). This would be a possibility, otherwise you could also use a lattice modifier on the square with the corresponding lattice. But keep in mind, so or so you have to subdivide the square.

The lattice approach:

enter image description here

Select lattice and... enter image description here

after the steps, move the lattice verticies around in edit mode

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  • $\begingroup$ Thank you for the answer, unfortunately proportional editing doesn't look natural and in my opinion is hard to work with. $\endgroup$ – TheodorLindberg Mar 19 at 12:44
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As Jack Pillawa says you can do it with a Lattice modifier:

  • Subdivide your plane, give it a Subdivision Surface modifier:

enter image description here

  • Create a lattice (ShiftA), give it a Resolution of 3/3/1, scale it in Object mode so that it fits the plane size:

enter image description here

  • Give your plane a Lattice modifier with the lattice as Object. Twist the lattice in order to deform the plane. You can create shapekeys for your lattice if you want to keep its basic flat shape:

enter image description here

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  • $\begingroup$ Thank you so much! I will try that. $\endgroup$ – TheodorLindberg Mar 19 at 12:47

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