katosa Posted February 27, 2022 Share Posted February 27, 2022 why houdini's dihedral() needs vector as argument,even it means angle from two planes? Quote Link to comment Share on other sites More sharing options...
Librarian Posted February 27, 2022 Share Posted February 27, 2022 @katosa The method dihedral(vector a, vector b ) returns a quaternion which represents a rotation around the vector a × b which takes the vector a to the vector b.. if you want more to see and study here 1 Quote Link to comment Share on other sites More sharing options...
animatrix Posted February 27, 2022 Share Posted February 27, 2022 Konnichiwa, Because this function computes the rotation matrix or quat which rotates the vector a onto the vector b. You can represent a plane using a normal and optionally a center so it's the same idea. 1 Quote Link to comment Share on other sites More sharing options...
katosa Posted February 27, 2022 Author Share Posted February 27, 2022 (edited) now I could understand that normal means a plane. Edited June 1, 2024 by katosa Quote Link to comment Share on other sites More sharing options...
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