Rotating a part of Entity Model around 2 separate Rotation Points.

[gottsch]

I was wondering if you can rotate a part of an entity model around 2 separate rotation points?  Say I have a box and I want to rotate it around (a, b, c) on the y-axis, but then need to rotate it around (x, y, z) on the x-axis.  It seems you can use box.setRotationPoint() and box.rotateAngleX/Y/Z but this will only work against the one point.

 

Ex. Minecraft Chest: The lid and latch both have the same rotation point so when they are rotated on the x-axis they rotate to the proper positions.  But say I wanted to rotate the latch on the y-axis first but at a point much closer to the latch so it's rotating "in place".

[Draco18s]

You're going to have to figure out the combined rotation yourself.

You may want to convert to Matrix4x4 and do matrix math, then convert back.

[gottsch]

Thank you for your quick response, but I haven't worked with matrices (for transformations) for a long time and rendering is my least favorite thing.  Any examples you could point me at?