{"id":6844,"date":"2023-08-20T13:27:02","date_gmt":"2023-08-20T13:27:02","guid":{"rendered":"https:\/\/3dcoat.com\/documentation\/?post_type=manual_documentation&p=6844"},"modified":"2024-05-28T16:53:47","modified_gmt":"2024-05-28T16:53:47","slug":"lock-normals","status":"publish","type":"manual_documentation","link":"https:\/\/3dcoat.com\/documentation\/manual\/workspaces-rooms\/paint\/importing-into-the-paint-room\/lock-normals\/","title":{"rendered":"Lock Normals"},"content":{"rendered":"\n

Import and Lock Normals<\/h3>\n\n\n\n

Lock Normals:<\/strong> Don’t recalculate normals at import, use normals directly from the object file. Otherwise, new faces will have the overall normal orientation of that original face.<\/p>\n\n\n\n

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If you subdivide mesh this option will be ignored.<\/p>\n<\/blockquote>\n\n\n

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When you import mesh for the per-pixel painting, you may lock normals for the best compatibility with the normalmap baked for this set of normals. <\/p>\n\n\n\n

Lock normals are needed because unlocked normals are auto-calculated.
Lock is required if you want custom normal line unrelated to neighboring vertex position.
Lock normals on an object when you needed to set custom normal orientation, and didn’t want geo edits to mess up the normal direction already set. <\/p>\n\n\n\n

As example custom normal orientation is needed to get a certain effect from a vertex shader in a game engine.<\/p>\n\n\n\n