11 Edit Imported and Market Place Meshes in Unreal Engine 5 6

Session 11 Summary – Fixing Normals, Assembling Doors, Mesh Editing, and Projection Tool

🔧 1. Import & Fix Blender Export Normals

• Imported door_edited.fbx from Blender into Unreal.

• Identified rendering issue due to flipped normals (red face orientation in Blender).

• Fixed normals using Mesh > Normals > Flip in Blender and re-exported FBX.

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🚪 2. Door Assembly in Unreal

• Imported 4 components of the door: full frame, top, bottom, single door.

• Used XForm > Edit Pivot to set accurate pivot points for animation-ready rotation.

• Assembled components and positioned precisely using front and right views.

• Parented door top and bottom to the single door frame for hierarchy.

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🔁 3. Creating Mirrored Doors

• Duplicated and rotated doors manually (instead of using Mirror tool) to allow independent animation of left and right doors.

• Renamed duplicated structures to single_door_left and single_door_right.

• Parented both to the full_door_frame.

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🏛️ 4. Replacing Old Doors with New Doors

• Replaced four original placeholder doors in the main structure.

• Used copy-paste transform method for accurate placement.

• Applied scale adjustment (0.9) to fit door frame precisely into cutouts.

• Ensured proper alignment and rotation (e.g., 90° for rotated doors).

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🧰 5. Mesh Editing Tools for Imported Geometry

• Imported meshes can't be directly edited with polygroup tools.

• Used Tri Select + Create Polygroup to isolate faces based on angle or material.

• Enabled further edits using Model > Polygroup Edit, Push Pull, Inset, etc.

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🧱 6. Mesh Tools Used

Tool	Functionality
Tri Select	Selects faces using angle, material, connected topology
Triangle Edit	Allows direct manipulation at triangle level (extrude, push, etc.)
Fill Hole	Closes mesh holes
Weld	Merges duplicate vertices and edges
Union	Combines two meshes into one
Jacket	Fixes overlapping or inverted mesh topology
Simplify	Reduces triangle count while preserving shape
Remesh	Subdivides mesh for finer surface detail editing
Auto UV	Generates UVs for imported meshes
Displace	Uses texture maps to emboss/displace geometry (used door flower texture)

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🌸 7. Texture-Based Displacement

• Applied Remesh to door top and bottom to increase geometry resolution.

• Used Auto UV for texture mapping.

• Applied Deform > Displace using door_texture with intensity -20 and UV scale 2x2 to emboss floral design.

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🔁 8. Mirroring & Duplicating Final Doors

• Adjusted pivot, grouped left/right doors under main door frame.

• Duplicated and placed new doors in all four cutouts of Golgumbaz main wall.

• Used manual transformation and parenting for better control.

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🎯 9. Bonus: Project Tool (Advanced Demonstration)

• Created a thin tall mesh and patterned it in a circle around the dome.

• Used Mesh > Project to wrap geometry onto the dome.

• Settings adjusted: Shape Preserving, No Collapse, Triangle Count, Parallel Mode.

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📋 10. Final Notes

• Used Inspect Tool to analyze mesh structure and triangle counts.

• Saved project; session concluded with clean integration of detailed doors and basic projection.

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🏗️ Next Session Preview

• Modeling the 4 Minarets to surround the main Golgumbaz structure