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rhino:rhinov5status_extrusions [2020/08/14] (current) |
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+ | ====== Lightweight Extrusion Objects ====== | ||
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+ | In many large models, most of the geometry consists of objects that can be represented as an extrusion of a planar curve. | ||
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+ | {{: | ||
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+ | ===== What ===== | ||
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+ | Rhino 5.0 has a new lightweight extrusion object that uses less memory, meshes faster, and saves smaller than the traditional polysurface used in Rhino 4.0. Commands like Box and Cylinder create lightweight extrusion objects. | ||
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+ | ===== Why ===== | ||
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+ | Customers were creating architectural models with tens of thousands of objects that were simple extrusions. When traditional polysurfaces were used to represent the objects, the models were sluggish and used lots of memory resources. When these models use the lightweight extrusions, the models were responsive and there was plenty of memory available. | ||
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+ | ===== How ===== | ||
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+ | The new **UseExtrusions** command can be used to control the use of lightweight extrusion objects. If you want commands like **Box**, **Cylinder**, | ||
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+ | ===== New commands ===== | ||
+ | * **UseExtrusions**: | ||
+ | * **SelExtrusions**: | ||
+ | * **ConvertExtrusion**: | ||
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+ | * **Changed commands:** | ||
+ | * **SelPolySrf**, | ||
+ | * **SelSrf**, **SelClosedSrf**, | ||
+ | * **ExtrudeCrv**: | ||
+ | * **Box**, **Cylinder**: | ||
+ | * **Pipe**, **Slab**: These commands will create lightweight extrusion objects when possible. | ||
+ | * **Explode**: | ||
+ | * **Mesh**: If you mesh an extrusion object, the walls are always meshed with quads running the length of the extrusion. The caps are generally meshed with triangles. | ||
+ | * **SaveAs V4**: Extrusion objects are converted to polysurfaces when saving as V4 files. | ||
+ | * **Dir**: Extrusion objects work like polysurfaces and surfaces. | ||