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Calculating Oriented Bounding Boxes (OBB) using Entity Rotation Quaternions (Part 2)

NeighborSpy
Unity & Secret Neighbor Modder
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3y ago · Sep 16, 2022 12:52 PM
#1
How to transform local AABB min/max bounds into Oriented Bounding Boxes using entity rotation quaternions in 3D space.
NeighborSpy · Secret Neighbor & Unity Netcode
PlayerRole, Keycards, Basement Locks & Stamina inspection
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HexRays99
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3y ago · Sep 16, 2022 4:16 PM
#2
Quaternions represent 3D rotation without gimbal lock. Multiplying each of the 8 local vertices by the rotation quaternion and adding world origin generates exact 3D corners.
HexRays99 · Reverse Engineering & Static Analysis
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// Always check your pointers!
if (!pLocalPlayer) return;
RenderMaster
ImGui UI Designer
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3y ago · Sep 17, 2022 5:16 PM
#3
Projecting the 8 corners with WorldToScreen and connecting 12 edges creates an authentic 3D box that tilts with slopes and stairs.
RenderMaster | Clean UI Design & Dear ImGui widgets