How to Fix a Botched Nose Job with Rhinoresurf
What is RhinoResurf and How to Use It for Reverse Engineering?
RhinoResurf is a plug-in for Rhinoceros 4.0 and 5.0 that allows you to reconstruct the geometry of an object from a mesh or point cloud that describes it. It is a useful tool for reverse engineering, which is the process of recovering the design of a product or system from its physical form.
rhinoresurf
RhinoResurf can perform various tasks such as:
NURBS fitting with specified tolerance. You can drape a surface over a point cloud or a mesh with a given accuracy. The surface will take the shape of the object along the drape direction, which is calculated automatically.
Controllable surface smoothness. You can adjust the smoothness of the generated surface by changing the parameters of the fitting algorithm.
G1 continuity transition. You can create multiple NURBS surfaces from a mesh or a point cloud and ensure that the transition between any two surface patches is smooth and continuous.
Free-form NURBS surface modeling from polygon mesh. You can model a NURBS surface from a polygon mesh (such as .obj file format) and achieve exact G1 continuity everywhere.
Fill hole by surface with numerical G1 continuity on the adjacent edges. You can fill a hole in a mesh or a surface by creating a new surface patch that matches the curvature of the surrounding edges.
Match 2 surfaces to be tangent/curvature continuous on the common edge. You can modify two existing surfaces to make them smooth and continuous along their shared edge.
Unfold 3D mesh/surface into 2D mesh/surface. You can flatten a 3D object into a 2D shape that preserves the dimensions and proportions of the original object.
Surface mapping from morphed mesh. You can map the original geometry of an object to a new position after the object has been deformed or transformed by a mesh operation.
Solid creation from mesh edge. You can create a solid object from a mesh edge by extruding it along a direction.
RhinoResurf is designed to be user-friendly and easy to understand. You can load it manually at the first time and it will automatically load itself into the Rhino environment later. You can access its commands from the Rhino command line or from the RhinoResurf menu.
How to Use RhinoResurf for Reverse Engineering?
To use RhinoResurf for reverse engineering, you need to have a mesh or a point cloud of the object that you want to reconstruct. You can obtain a mesh or a point cloud from various sources, such as 3D scanning, photogrammetry, or manual modeling. You also need to have Rhino and RhinoResurf installed on your computer.
Once you have the mesh or the point cloud, you can load it into Rhino and use RhinoResurf commands to create NURBS surfaces from it. Depending on the shape and complexity of the object, you can choose different commands and options to achieve the best results. Here are some examples of how to use RhinoResurf for reverse engineering:
If you have a point cloud of an object that has a simple and smooth shape, such as a car hood or a helmet, you can use the RsPoints2Surf command to drape a surface over the point cloud with specified tolerance. This will create a single NURBS surface that follows the shape of the object.
If you have a mesh of an object that has a complex and irregular shape, such as a sculpture or a rock, you can use the RsMesh2Surfs command to create multiple NURBS surfaces from the mesh. You need to select the mesh and define a curve network by drawing lines on the mesh. The curve network will guide the surface creation and ensure smooth transitions between surface patches.
If you have a polygon mesh of an object that has a free-form shape, such as a character or an organic model, you can use the RsFaceFromPolygon command to model a NURBS surface from the polygon mesh. This will create a single NURBS surface that reaches exact G1 continuity everywhere.
If you have a hole in a mesh or a surface that you want to fill with a new surface patch, you can use the RsFillHoleBySurf command to fill the hole by surface with numerical G1 continuity on the adjacent edges. This will create a new surface patch that matches the curvature of the surrounding edges.
If you have two surfaces that you want to make smooth and continuous along their common edge, you can use the RsSurfaceMatch command to match two surfaces to be tangent/curvature continuous on the common edge. This will modify the existing surfaces to make them smooth and continuous.
These are just some of the examples of how to use RhinoResurf for reverse engineering. You can explore other commands and options in RhinoResurf to suit your specific needs and preferences. You can also combine RhinoResurf commands with other Rhino commands and tools to further edit and refine your surfaces.
Reverse Engineering Examples with RhinoResurf
To illustrate how RhinoResurf can be used for reverse engineering, here are some examples of different objects that have been scanned and reconstructed with RhinoResurf.
Example 1: Car Hood
In this example, a car hood was scanned with a 3D scanner and imported into Rhino as a point cloud. The point cloud was then converted into a mesh with the RsPointCloud2Mesh command. The mesh was then fitted with a single NURBS surface with the RsMesh2Surf command. The surface was then edited and refined with other Rhino commands and tools.
Example 2: Sculpture
In this example, a sculpture was scanned with a 3D scanner and imported into Rhino as a mesh. The mesh was then converted into multiple NURBS surfaces with the RsMesh2Surfs command. A curve network was drawn on the mesh to guide the surface creation and ensure smooth transitions. The surfaces were then edited and refined with other Rhino commands and tools.
Example 3: Character
In this example, a character was modeled with a polygon modeling software and imported into Rhino as a polygon mesh. The polygon mesh was then converted into a single NURBS surface with the RsFaceFromPolygon command. The surface was then edited and refined with other Rhino commands and tools.
How to Install RhinoResurf?
RhinoResurf is a plug-in for Rhino that adds several new commands and features for reverse engineering. To use RhinoResurf, you need to have Rhino and RhinoResurf installed on your computer. Here are the steps to install RhinoResurf:
Download RhinoResurf from http://www.resurf3d.com/products.htm. You will get a file named RhinoResurf_v4r7.exe for Rhino 7, or RhinoResurfx64.exe for Rhino 6 and 5 (64-bit), or RhinoResurf.exe for Rhino 4 and 5 (32-bit).
Double click the file to run the installer. Follow the instructions on the screen to complete the installation. Typically, the installation directory is C:\Program Files\Rhino 7\Plug-ins\RhinoResurf for Rhino 7, C:\Program Files\Rhino 6\Plug-ins\RhinoResurf for Rhino 6, C:\Program Files\Rhinoceros 5 (64-bit)\Plug-ins\RhinoResurf for Rhino 5 (64-bit), or C:\Program Files\Rhinoceros 4.0\Plug-ins\RhinoResurf for Rhino 4 and 5 (32-bit).
Start Rhino. Type Options at the command prompt and press Enter. A dialog box will appear, choose Rhino Options->Plug-ins, click the Install button.
Browse for the plug-in file (typically C:\Program Files\Rhino 7\Plug-ins\RhinoResurf4\RhinoResurf_r7.rhp for Rhino 7, C:\Program Files\Rhino 6\Plug-ins\RhinoResurf4\RhinoResurf_r6.rhp for Rhino 6, C:\Program Files\Rhinoceros 5 (64-bit)\Plug-ins\RhinoResurf4\RhinoResurf_x64.rhp for Rhino 5 (64-bit), or C:\Program Files\Rhinoceros 4.0\Plug-ins\RhinoResurf1_1.rhp for Rhino 4 and 5 (32-bit)) in the installation folder.
Click the Open button. Click the Close button.
After installing, you will see the RhinoResurf menu added to the Rhino menu. You can access the commands and features of RhinoResurf from this menu or from the command line. b99f773239
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