Coincident vertices are separate, individual vertices in a single 3D object that occupy the same location in space. Essentially, the vertices are overlapping. This sort of issue can come up when combining multiple elements or along the edges of open polygons where the vertices have been snapped to one another.
Coincident vertices often cause smoothing problems when the model is rendered, and can cause errors when the model is exported to other applications. To avoid these problems, coincident vertices must be welded or attached together to form a single vertex. When you have coincident vertices, there will be times you have coincident faces as well. In some situations it may be easier to remove the coincident faces rather than the individual vertices.
Finding and Fixing Coincident Vertices in 3ds Max
Finding and Fixing Coincident Vertices in 3ds Max
1. Click on the plus symbol in the upper left corner of the viewport. From there, select Xview > Overlapping Vertices.
2. Go to the menu at the top, and click Customize > Unit Setup. Next, click the box for Generic Units.
3. Green text telling you how many overlapping vertices your object contains will appear in the bottom middle area of the viewport. Go to the Modify Panel and select the Edit Poly Modifier. Then change the selection type to Vertices.
4. Go back to the green text at the bottom middle of the viewport and right click it. Then hit Select results.
5. Set the Tolerance in the Selection window to 0.0001.
6. Go back to the Modifier Panel, scroll down, and click the settings box next to the Weld button. Set the welding threshold to 0.001 and double click the circle with the green check in it.
7. Your model is now free of overlapping vertices.
Finding and Fixing Coincident Vertices in Cinema4D
Finding and Fixing Coincident Vertices in Cinema4D
1. Select your model in the viewport.
2. Be sure to have “Points” selected. Once you do, go to the main menu and select Mesh > Command > Optimize. All of the Coincident Vertices will then be selected. To know how many are selected you will need to be sure to have checked “Selected Points” in Options > Configure > HUD (located in “Viewport Perspective”)
3. If you would like to simply control the tolerance, click on the settings cog located right next to the Optimize button.
Finding and Fixing Coincident Vertices in Lightwave
Finding and Fixing Coincident Vertices in Lightwave
Once a Scene file is created Coincident Vertices are automatically removed from your modeling file.
Finding and Fixing Coincident Vertices in Blender
Finding and Fixing Coincident Vertices in Blender
1.Select the object and make sure you are in edit mode with vertices selected.
2. Press “A” to select all vertices.
3. Go over to the toolbars panel and press “Remove Doubles”
4. The number of removed vertices will be displayed at the top next to the Blender logo
