2
$\begingroup$

I have a model of tooth which is empty inside. I need it to be filled. Solidify modifier doesnt work correctly. How can I fill it?

I have a camera script which makes camera slowly move forward, so it makes a result similar to DICOM files. And to achieve more realistic result I need it to be filled

Improve this question
$\endgroup$
4
  • $\begingroup$ please show a screenshot of the wireframe, maybe even share your file $\endgroup$ – moonboots Aug 22 '19 at 12:06
  • $\begingroup$ When is the Emptiness a problem? If you use a Boolean to Cut the Tooth the Tooth will appear solid inside. The Boolean Mesh will need to be large enough to encompass all the affect vertices. $\endgroup$ – rob Aug 22 '19 at 12:07
  • 1
    $\begingroup$ @moonboots gyazo.com/a8eca688cbc347874b4129947c951819 $\endgroup$ – cxnt Aug 22 '19 at 12:17
  • $\begingroup$ by the way, if the geometry's normal are inconsistent, or if there is ambiguity such as non convex shapes that intersect in the same mesh intersection, that wreaks havok on the boolean modifier $\endgroup$ – ThorSummoner Oct 1 '20 at 17:52
3
$\begingroup$

Polygonal models don't have an inside. They tell a renderer where their surfaces are.

If you want to slice an object as if it were solid, you have to reconstruct a surface where the slice cuts across it.

Here we have a cube inside a sphere inside a cube. All three objects have a Boolean modifier assigned to them.

enter image description here

The other cube displayed in wireframe to the left is a cutter object, and will be used as a target in the Boolean modifiers, set to 'Difference'. This will cut away the objects inside its volume, an construct a surface at its intersection with them, making it look as if the objects are solid.

Actually, there are 3 separate cutter-cubes, one as a target for each modifier, with their leading faces just slightly displaced from one another. If all the objects were cut in exactly the same place, Blender wouldn't know which new cut surface was in front of which, and there would be rendering artefacts. So the outside cube is cut away slightly more than the sphere, which is cut away slightly more than the inner cube.

Now if you animate the cutter-cubes together, you can create the illusion that the objects are solid.

enter image description here

Improve this answer
$\endgroup$
2
$\begingroup$

To Cut into the Tooth so you can use the Boolean Modifier.

Add a Cubeviewport wireframe and set to Wireframe in the Viewport

Now add a Boolean Modifier to your Tooth and select the Cube. boolean modifier

Improve this answer
$\endgroup$
9
  • 1
    $\begingroup$ No, that doesnt do what I want, it still empty inside, I need it to be filled $\endgroup$ – cxnt Aug 22 '19 at 12:16
  • 1
    $\begingroup$ I added more details to description $\endgroup$ – cxnt Aug 22 '19 at 12:20
  • $\begingroup$ Why does it need to be filled? I don't believe blender can fill an object. $\endgroup$ – Millard Aug 22 '19 at 12:23
  • 1
    $\begingroup$ @morph3us can you post it as an answer with more details please? I can provide you with tooth model if needed $\endgroup$ – cxnt Aug 22 '19 at 12:48
  • 2
    $\begingroup$ @morph3us I'm pretty new to blender and dont really know how to do it. So if you have time, could you post answer later $\endgroup$ – cxnt Aug 22 '19 at 14:02

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.