ShapeRender.rect with originX, originY, and rotation angle shows nothing

Newbie & Debugging Questions
#1 
shapeRenderer.rect(100, 100, 10, 100, Color.BLACK, Color.BLACK, Color.RED, Color.RED);

works

and the

shapeRenderer.rect(100, 100, 10, 100, 5, 50, 45, Color.BLACK, Color.BLACK, Color.RED, Color.RED);

shows nothing on the screen

wtf?

#2 

shapeRenderer.rect(x,    y, width, height, originX, originY, rotation, col1, col2, col3, col4)
shapeRenderer.rect(100, 100,  10,    100,        5,      50,      45,      Color.BLACK, Color.BLACK, Color.RED, Color.RED);

Where is it rendered without setting the origin/rotation?
What happens if you use


shapeRenderer.rect(100, 100,  10,    100,        100,      100,      45,      Color.BLACK, Color.BLACK, Color.RED, Color.RED);
#3
  1. At first all is well.
shapeRenderer.rect(100,100, 30, 60, Color.BLACK, Color.BLACK, Color.RED, Color.RED);

http://higgs.rghost.ru/50667484/image.png

  1. And then …
shapeRenderer.rect(100,100, 30, 60, 100, 100, 45, Color.BLACK, Color.BLACK, Color.RED, Color.RED);

or

shapeRenderer.rect(100,100, 30, 60, 0, 0, 45, Color.BLACK, Color.BLACK, Color.RED, Color.RED);

http://tau.rghost.ru/50667527/image.png