Openframeworks: [BUG?] is the ofRotateDeg & ofRotateRad wrong?

[lewislepton]

so I'm just doing some playing around, making tutorials etc. but coming across this for rotating objects does not make sense.
the x rotate deg & rad rotates vertically & the y rotate deg & rad rotates horizontally. this just does not makes a lot of sense. so im wondering if its something that has been overlooked.

ofApp.h

float rotate;

ofApp.cpp

void ofApp::update(){
  rotate++;
}

//--------------------------------------------------------------
void ofApp::draw(){

  ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);
//  ofRotateDeg(rotate);
  ofRotateXDeg(rotate);
//  ofRotateYDeg(rotate);
//  ofRotateZDeg(rotate);

//  ofRotateRad(ofDegToRad(rotate));
//  ofRotateXRad(ofDegToRad(rotate));
//  ofRotateYRad(ofDegToRad(rotate));
//  ofRotateZRad(ofDegToRad(rotate));
//  ofDrawRectangle(0, 0, 128, 128);
  ofDrawBox(60);
}

[lewislepton]

here are some GIF to show

x rotation

y rotation

[lewislepton]

in some ways this does make sense, but only a tiny bit. but when bringing in 2d shapes. it doesn't at all. it terms of new users to see this would be just a bit confusing.

[tgfrerer]

The rotations are named after the axes around which the rotation is performed.

• rotateX rotates around the x axis (which points to the right if camera points straight onto negative z, in a right handed coordinate system)
• rotateY rotates around the y axis (which points to top)

The gifs suggest rotations are performed as expected.

You can use ofDrawAxes() to draw the axes which might help debug or clarify the issue...

[arturoc]

going to close this since the behaviour is correct

[lewislepton]

cool spot. that does clear up what I was thinking. thanks ;)

[bakercp]

We just went over this in class today. Here's a slide :)

[lewislepton]

I it made sense when I worked it in my head & how axis worked. but was just something that popped up in myf head to ask. because for some reason, something felt off ;)