To increase the accuracy of fitting and to select the smallest number of overlapping polygons, you need to merge their vertices. You can do this by selecting a Threshold value as low as possible. Next, you should zoom out the model and draw a rectangle around it. Click Merge from the panel above the 3D viewport. Click Threshold Value and adjust it to the smallest value.
r3ds polygon selection
The first step in the process is to define a selection and define its parameters. In this case, you want to select only certain segments of geometry that are overlapping each other. For example, if a surface is curved, you can use polyColorPerVertex to select all the vertices in a plane. To create the selection, zoom out the model, draw a rectangle around it, and select Merge from the panel above the 3D viewport. Next, choose Threshold value as small as possible.
Merging vertices of overlapping polygons
You can merge vertices of overlapping polygon in R3DS to eliminate unmerged vertices in a mesh. In R3DS, you can use the “Intersect Edges” operation to generate consistent normals between the overlapping polygons. It favors the up-facing direction when computing normals, and sometimes, merging vertices is required to remove double faces.
Increasing the accuracy of fitting
You may have encountered a problem with the fit. If your mesh has a cylinder and a brick, for example, the fit will not be accurate. This is because there are some overlapping faces and polygons between the two. To fix this problem, use the Face Modifications and Face Constraints dialogs to adjust the radius and offset faces. In some cases, the problem can be circumvented by simply adding an offset face and changing the radius in the Face Constraints dialog. This solution may work for you, but it’s a very tedious process.
Using SelectPolygons
To create a mesh from a 3D scanned model, you can use a node called SelectPolygons. You can connect this to your CC base LoadGeom node. In the Visual Editor, click the Add button, then click the Models tab and click the SelectPolygons node. You will then see a new textured model.
To select multiple polygons in your scene, you must first set the size parameter to the correct value. In R3, 0.0 means that no polygon is selected. 1.0 means that all disconnected components are selected except the largest. The size parameter is a range of zero to one. The default size is 1.
If you need to select several polygons on the same model, you can use the polyColorPerVertex command. The polyColorPerVertex command selects the vertices of multiple objects. It is particularly useful if you have an imperfect surface, since it will select multiple vertices. The polyColorPerVertex command adds a nodeDagPath to the geometry. The polyColorPerVertex command also allows you to select joints without curves.
When you’re working in a 3D model, you’ll often want to choose between two modes for selecting geometry. You can toggle between two modes by using the Auto Select button. You can select an item using one of these modes by selecting an edge or a vertex and then pressing Ctrl. Alternatively, you can click on the edge or polygon to select all three.
