hi ! completely new here but something has been buggin me for a few hours,
I must be missing something but I can never get my fbo to take the whole screen space when I translate everything using ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2)
Here is my setup code
fbo.allocate(ofGetWidth(), ofGetHeight(), GL_RGBA);
Here is my draw code
ofTranslate(ofGetWidth() / 2, ofGetHeight() / 2);
my diffline.draw() draws a circle in the center (0,0) of the screen, but using this code, only the bottom left corner of the circle is drawn
It looks like you are translating the fbo itself and then drawing the circle centered at (0,0) inside the fbo rather than translating the circle inside the fbo.
I like to update the fbo (fbo.begin()/fbo.end() block) in update() instead of draw().
That would look like this:
ofSetColor(255, 0, 0);
ofTranslate(fbo.getWidth() / 2, fbo.getHeight() / 2);
ofDrawCircle(0, 0, 100);
In this case, you could achieve the same thing by putting the same lines in draw but be careful about drawing the fbo before you update it, won’t make a difference in this case but it seems like something that could lead to strange behavior in certain cases.
I hope that helps. Let me know if you still have trouble.
thanks a lot for the quick reply !
I’ll try this asap but it makes complete sense, thx for the update tip too !