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Blender: Widening a Road

Difference between revisions from 2012/01/27 19:37 and 2012/01/12 21:28.
What we are trying to do is take a "road" made of quads like the following, and widen it to where the green grease marks are:

[http://panoptic.com/rking/blender/road/00.desired.png]

The problem is that if you simply scale it, you get a mess:

[http://panoptic.com/rking/blender/road/01.scalingproblem.png]

So, there are two ways to fix it.

!! Script Way

One solution is to use the "Inset Outline" script from here: [http://panoptic.com/rking/blender/inset_outline.py] with a negative value to make it Outset instead of Inset.

!! Manual Way

Another solution involves scaling along some normals, using a temporary Solidify modification and then Alt+s.

1. Duplicate the road (Alt+d)

2. Add a Solidify modifier:
2. Solidify the shape by extruding it downwards.

[http://panoptic.com/rking/blender/road/02.solidify-modifier.png]

3. Make it thick enough that you can see the sides, say .5, then hit Apply:
3. In Face Select mode (Alt+Tab, F), and Alt+RMB to select the sides:

[http://panoptic.com/rking/blender/road/03.thickness.png]

...it should look like this:

[http://panoptic.com/rking/blender/road/06.alt-s.png]

3. Go into Edit Mode on the new road, in Face Select mode (Alt+Tab, F), and Alt+RMB to select the sides:

[http://panoptic.com/rking/blender/road/07.ring-removed.png]

6. Select the extra chain of faces with Alt+RMB, and delete them, too.

[http://panoptic.com/rking/blender/road/08.top-removed.png]

7. Make sure both roads have their origins in the middle, by Ctrl+Shift+Alt+C > Origin to Geometry

[http://panoptic.com/rking/blender/road/09.origin-to-geometry.png]

8. Hit 'n' to bring up the Properties panel, and Copy the Z value from the skinny road (Hover over the value and hit Ctrl+C):

[http://panoptic.com/rking/blender/road/10.find-z.png]

9. Paste it onto the Z value of the fat road:

[http://panoptic.com/rking/blender/road/11.paste-z.png]

10. And enjoy!

[http://panoptic.com/rking/blender/road/12.you-win.png]




7.









Last changed: 2012/01/27 19:37