Hi Sorry to trouble you with a noob question, I just started to use Bullet recently and have had a couple of odd issues.
I added the debug draw code for my OpenGLES2.0 targets, to let me have a look at the boxes I was testing against, and got some odd results.
This Ground plane is defined this way.
PhysicsObj* Ground = this->CreatePhysicsObj(
new btBoxShape( btVector3(0.1f, 24.0f, 111.0f) ), // shape
0, // mass
btVector3(0.0f, 0.0f, 0.0f) // position
);
Which appears to suggest the x value of the BT vector is the 0.1, but it is actually the Y as you can clearly see, the Y itself provding the left to right X width of the plane, which seems suggest I have swapped Y with the X. The Z component appears fine going off to the distance. I don't really understand how this might be.
I'm pretty sure I am drawing them ok (but one must never assume) but I wonder if anyone has seen this before and knows what I might be doing wrong?
Confusion over axis?
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- Posts: 46
- Joined: Sat Jul 29, 2017 9:19 pm
Confusion over axis?
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- Posts: 46
- Joined: Sat Jul 29, 2017 9:19 pm
Re: Confusion over axis?
oops I just found out, I'd rotated my ground plane 90 degs in error when I constructed it with a faulty default quat value.
nothing to see here, fat old man making mistakes, and saying hello in the process.
nothing to see here, fat old man making mistakes, and saying hello in the process.