A few months ago I wrote a post about retopology tools in Maya. I'm not using those tools anymore, now I deal with retopology using Modo.
I'm doing a lot of retopo these days working with 3D scanners and decimated Zbrush models coming from the art department.
Pretty much all the 3D packages these days have similar retopology tools, but working with Modo I feel more freedom and I work more comfortable doing this kind of task.
These are the tools that I usually use.
- Before starting I like to set the 3D scanner as "static mesh". Doing this I will hide all the item's components making this process much easier.
- Pen tool: I use this tool to draw my first polygon. That's it, after drawing the firs poly face I drop the tool and don't use it anymore.
- The type of geo should be polygon and make sure the option "make quads" is activated.
- As I said, I draw just one face and drop the tool.
To carry on with retopology I use the "topology pen tool" which combines all the other retopology options. I use this tool to make 90% of the work.
These are some of it's options.
- LMB: Move vertex, edges and faces.
- Shift+LMB & drag edges: Extrude edges.
- Shift+LMB & drag points: Create faces.
- Shift+RMB & drag edges: Extrude edge loops.
- RMB & drag edges: Move edge loops.
- CTRL+MMB: Delete components. (faces, edges y vertex).
- Inner snap: This option allows you to weld interior vertex.
- Sculpt -> smooth: Allows you to relax the geometry, very useful to make a better distributions of the edge loops.
- If you work with symmetry you probably want to align the middle points to the center of the world.
- In order to do so, select all of them and go to vertex -> set position.
- Then you can assign a common values for all of them.
- To create the mirror press "shift+v".
- To merge both parts just select both items, RMB and click on merge meshes.
- Once merged just select the points and go to vertex -> merge to weld them.
- Topology sketch tool: Allows you to draw polygons very quick.
- Contour tool: Allows you to draw curves that will be connected using the bridge option. Very useful for kinda cylinder parts like arms or legs.
- Obviously if you draw more curves you will get more resolution to match the 3D scanner.
- You can create a very quick geometry and then add resolution using the "topology pen tool".