mirror tool revisited

[bruce johansen]

g-4, os 9.2.2, sl 10.1.2

1- draw a 3d light position object, centered at x=0,so as to have a center lineand name it lx, give it a height of 20' (z=20')

2- insert a lighting device at 10' left of center,x=-10' y=0" rotation =0 deg.it will acquire the position and z value from the light position object.

3- duplicate and mirror that light device in relation to center line. you will get x=10' y= 0"and rotation is -180 deg, position and z value will come from the light position object.

4- with the focus point tool, create a focus point at x=0 y=10'accept z=5' name it 1.

4- select the 2 light devices, put 1 in the focus box, press enter to get the draw beam box active, select draw and check the workspace.

both lighting device should draw there respective beams.

on my machine, the left lighting device is as expected, it points and intersects the focus point. the rightside lighting device, ( duplicaed and mirrored one) the field is drawn to the top of the workspace and the beam is drawn to the bottom of it.of course, neither of these two intersect the focus point. you can try changing the value of x to see or the value of the rotation to see.if you think you can replace this device with the same symbol made active or any other, it does not work in so far as correcting the rotation and the problem remains.

it takes 10 minutes to try it and post a result!

please contribute, thanks.

ps keep the file for the next post "trimming"

[Hunter B]

I too have a similar problem... I try to use the 3D selection tool that allows you to "drag" the focus to a Loci point. This seems to never work. It focuses it to some random point that does not correspond to the loci point at all.