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Good morning

I have imported a obj with textures in blender and i would like to cut it and eliminate margins. in the image you can see several trees in margins, and i would like to cut and only remain the area of the green square. How can i do this?

Thanksenter image description here

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Make a cube the size of the green square, add a boolean modifier to your mesh and use the cube as the target object, set it to intersect.

For example:

All this is done from the top view, 7 on the numpad

This represents your imported .obj mesh: enter image description here

Add a cube: enter image description here

Scale the cube to the size you need. Hit S to scale, then hit X or Y to scale on the X or Y axis... Try it out. enter image description here

Next add the modifier to your base mesh, in your case you need the Boolean modifier. Change it to "Intersect" then click the little eyedropper and select the cube as the "Object" enter image description here

Then hide the cube and your base mesh should have been trimmed into the shape of your green square. enter image description here

Appologies for the poor quality of the gifs, each gif can only be 2Mb max... :)

You can "apply" the modifier so it is no longer modifiable if you like. enter image description here

Please click the tick next to this answer if it works for you so others can find this information. If you need more help, just ask! :)

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  • $\begingroup$ Thanks Psyonic. Could you explain a bit detailed? it is the first time i use blender $\endgroup$
    – JuanL
    Mar 12 '21 at 8:26
  • $\begingroup$ No worries, I'll update my answer with some pics and vids :) $\endgroup$
    – Psyonic
    Mar 12 '21 at 10:13
  • $\begingroup$ @JuanL I've updated my answer, I hope it helps... $\endgroup$
    – Psyonic
    Mar 12 '21 at 11:05
  • $\begingroup$ Thanks! I have performed this correctly. However, when i export to gltf there is a remain of the cube with image textures . could it be removed? $\endgroup$
    – JuanL
    Mar 17 '21 at 16:07
  • $\begingroup$ In the export window, on the right there should be a drop-down called "Include", make sure you have "Limit to Selected Objects" ticked and only have the object you want to export selected. $\endgroup$
    – Psyonic
    Mar 18 '21 at 6:34

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