[edited] how to align an ofNode orientation with a vector?

@kaspar.wtf wrote:

hi, I’m creating a simple butterfly movement using ofNode.

ofNode butterfly;
ofPlanePrimitive lWing, rWing;

both of these wings are offset from the center and are parented to the butterfly object

	lWing.setParent(butterfly);
	rWing.setParent(butterfly);
	lWing.move(-110, 0,0);
	rWing.move(110, 0, 0);

before trying to make the wings flap, I’d like to make sure that each butterfly and its wings is aligned with its velocity

For debugging purpose I draw the head (using position+velocity) and tail (using position) of the butterfly in red and white respectively to get an idea of the orientation that they are supposed to have

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