consolidate ofDrawCone

Signed-off-by: tgfrerer <tim@poniesandlight.co.uk>
fix ofLight cone debug draw if spotlight

this makes sure the spotlight cone points in the right direction when a spotlight ofLight is drawn using the fixed function renderer.

because the cone primitive has its base circle in x/z and the tip on the y-axis, we need to rotate the cone first, so that it points along the z-axis.

Signed-off-by: tgfrerer <tim@poniesandlight.co.uk>
fix ofDrawArrow

this fix makes sure that the cone at the arrow tip points in the correct direction.

Signed-off-by: tgfrerer <tim@poniesandlight.co.uk>
Revert "consolidate ofDrawCone"

This reverts commit 5ad57925398f505f41d20c191be7b522fa02ba96.
Merge pull request #2399 from tgfrerer/fix-ofDrawArrow+ofLight_draw

Fix ofDrawArrow & ofLight::draw()