0
$\begingroup$

new to Blender but really enjoying it. There is one specific effect that i've used a fair bit in After-effects & fusion which is grid/mesh warp. Basically the software adds in a predefined number of mesh/warp points, & you can drag them out to create interesting effects.

This is a simple animation I made using grid-warp to give the impression the tree was swaying gently in the wind.

https://www.harrisonillustration.com/animation/hjhxcsgb01tiqjhj9i2d1ob0fgmpvx

Attached is an After-effects screen grab.

enter image description here

I've imported an alpha channel .PNG into blender as a plane, but have been stuck for days as to an easy way to warp it.

Any help much appreciated.

enter image description here


Ok that sounds hopeful :) ..any links to tutorials?....since posting the question I've got as far as using ‘loop cut’ in edit mode to make a grid, & this can be deformed, but there doesn’t seem to be a way to keyframe the deformation..

enter image description here

$\endgroup$
  • $\begingroup$ The best is probably to begin with a mesh that roughly follows the tree shape. Then you could use physics, but the simplest way to do it is probably to parent the drawing to an armature and then make the bones move the way you want. Another method would be shapekeys. Also hook vertices to empties... $\endgroup$ – moonboots Sep 10 at 11:59
  • $\begingroup$ ..sorry, have added an answer/question below..couldn't work out how to add an image to a comment $\endgroup$ – Samsara_71 Sep 10 at 12:22
  • $\begingroup$ oh dear, the mod deleted my 'answer' then deleted the original after-affects screen grab so the questions makes less sense. I love over eager forum police 😠 $\endgroup$ – Samsara_71 Sep 10 at 12:34
  • $\begingroup$ edit your question $\endgroup$ – moonboots Sep 10 at 12:35
  • $\begingroup$ Yes. I’ve edited it now . Got as far as warping,but can’t keyframe the changes $\endgroup$ – Samsara_71 Sep 10 at 13:02
2
$\begingroup$

I guess one of the easiest way will be to use shapekeys, but it requires a bit of knowledge (I would personally prefer bones but it needs to know a bit of rigging). If I make it short:

  • Create your tree image. Save it as a PNG with transparent background. Import your image as a background, create a mesh and roughly follow the tree shape.

enter image description here

  • Unwrap your mesh, open the UV/Image editor and put the UV map over the tree image. Give your mesh a material with the image tree as Image Texture. Use the Image Texture Alpha socket as a Factor in a Mix Shader that will mix the Image Texture node and a Transparent node, so that the object is transparent.

enter image description here

  • Select your object in Object mode, go in the Properties panel > Data > Shape Keys, create 2 shapekeys. Go in Edit mode, select the second shapekey, move your object vertices to deform your tree the way you want.

enter image description here

  • Back in Object mode, keep the second shapekey selected, play with its value to make the tree move. To animate through time, create keyframes: put the cursor over the value and press i. Open the Dopesheet to move the keyframes if necessary.

enter image description here

$\endgroup$
  • $\begingroup$ Ah, thank you so much for this reply..i got as far as discovering 'Shape keys' yesterday, so was on the right track ;) Will go through your example now. thanks again $\endgroup$ – Samsara_71 Sep 11 at 10:56
  • $\begingroup$ ..sorry, really stuck at the second step. Ive imported the alpha .png as a background image..then its this bit " create a mesh and roughly follow the tree shape "...i can't find any way to draw around the object in the way you've shown. sorry to be so inexperienced $\endgroup$ – Samsara_71 Sep 11 at 15:05
  • $\begingroup$ put the image as a background (or in 2.8 just import the image), create a plane, then go in Edit mode and move the vertices of the plane, extrude to extend it, etc... $\endgroup$ – moonboots Sep 11 at 15:14

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.