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Robsoyo · 09-09-2006, 10:47 AM

Hi there

Is there a way to render frames backwards? Ive had a try with say, the Arbitrary range type, but doesn't seem to be working. Its for an abstract animation thats ended up looking better in reverse.

any help would be appreciated

thanks

Mark · 09-09-2006, 11:39 AM

Yep. Go to your Render Options Panel, leave the range type as Single. Stick the highest frame number in as the starting frame, the lowest as the ending frame and set the frame step as -1

~When you hit F10 you'll be prompted to set the sequence end frame to the same as the slider end frame - say no and away you go!

Robsoyo · 09-09-2006, 04:55 PM

Great stuff, thanks Mark!

Knew it had to be something that simple. So if I was to put in 5 (for example) as the frame step, it'd render every five frames?

Cheers:beer:

Mark · 10-09-2006, 08:59 AM

Ferzackerly!

Also, if you use 'Keyframe' as the render type it will render every keyframe in your scene - good for storyboards!

Robsoyo · 11-09-2006, 01:13 AM

Thanks again mark.

Have another question now, im creating an object thats basically a grid of long square rods, ive bezzled them though so the more I make the slower lightwave runs. I do have a powerful mac though (quad 2.5 ghz, 4.5 gigs ram) is there any way, like in layout, to tell modeller to devote more memory to calculations?

cheers

Mark · 11-09-2006, 04:19 AM

No unfortunately. The only memory management you have is the render segment limit which will simply devote more RAM to the render buffers (can help to speed up rendering time is all).

With the problems you describe, I'd say there's a couple of options open to you:

(1) Set your bounding box threshold lower. This way, if large objects are causing LW to lag when you manipulate them, then this will cause LW to simply draw the object as it's bounding box when you manipulate it - speeding up the screen redraw and therefore responsiveness.

(2) Replace your object with a low-res proxy. Essentially, create a lower resolution stand in model that has the same general dimensions as your hi-res one, then use the layout 'Replace' button to swap the object out. Remember to swap it back in though after you're done

Robsoyo · 11-09-2006, 05:23 PM

good info thanks. how do you set the bounding box threshold lower?

Ive ran into another problem, the good old boolean tool, I use the subtraction mode so much and never have any problems.

With these bezzled blocks though its just not working, infact, it starts to load but then freezes up so I have to force quit lw! Fairly annoying when theyre very simple shapes.

Can you help? ill attach a couple of pics to put you in the picture

thanku

Robsoyo · 11-09-2006, 05:24 PM

heres just a basic block, it works with that...

Mark · 12-09-2006, 03:04 AM

To change the bounding box threshold, hit 'd' for Display options and look about halfway down the panel. I generally keep it to around 500,000 polys on my machine (P4 3Gig/1Gig Ram 7800GT Video Card), but you'll need to experiment on your machine to get the best results.

As for the boolean operations, unfortunately they can be less than reliable on many occasions. It's a sad fact that you should always save your objects before trying the operation because they can (and often do) cause LW to crash.

There are a number of things you can try to make life a little more reliable. First, try segmenting your main box - maybe try two or three slices horizontally through it, and one vertically. This give LW an easier time in calculating the new mesh. You might also need to try doing your subtractions in smaller quantities - really there's no real guidelines on this - just shifting the geometry slightly might even work in some instances...

09-09-2006, 10:47 AM	#1
Robsoyo Registered Member Join Date: Feb 2005 Location: Sheffield Posts: 45	rendering in reverse Hi there Is there a way to render frames backwards? Ive had a try with say, the Arbitrary range type, but doesn't seem to be working. Its for an abstract animation thats ended up looking better in reverse. any help would be appreciated thanks

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09-09-2006, 11:39 AM	#2
Mark Super Moderator Join Date: Jan 2003 Location: Sunbury, UK Posts: 2,339	Yep. Go to your Render Options Panel, leave the range type as Single. Stick the highest frame number in as the starting frame, the lowest as the ending frame and set the frame step as -1 ~When you hit F10 you'll be prompted to set the sequence end frame to the same as the slider end frame - say no and away you go!

09-09-2006, 04:55 PM	#3
Robsoyo Registered Member Join Date: Feb 2005 Location: Sheffield Posts: 45	Great stuff, thanks Mark! Knew it had to be something that simple. So if I was to put in 5 (for example) as the frame step, it'd render every five frames? Cheers:beer:

10-09-2006, 08:59 AM	#4
Mark Super Moderator Join Date: Jan 2003 Location: Sunbury, UK Posts: 2,339	Ferzackerly! Also, if you use 'Keyframe' as the render type it will render every keyframe in your scene - good for storyboards!

11-09-2006, 01:13 AM	#5
Robsoyo Registered Member Join Date: Feb 2005 Location: Sheffield Posts: 45	Thanks again mark. Have another question now, im creating an object thats basically a grid of long square rods, ive bezzled them though so the more I make the slower lightwave runs. I do have a powerful mac though (quad 2.5 ghz, 4.5 gigs ram) is there any way, like in layout, to tell modeller to devote more memory to calculations? cheers

11-09-2006, 04:19 AM	#6
Mark Super Moderator Join Date: Jan 2003 Location: Sunbury, UK Posts: 2,339	No unfortunately. The only memory management you have is the render segment limit which will simply devote more RAM to the render buffers (can help to speed up rendering time is all). With the problems you describe, I'd say there's a couple of options open to you: (1) Set your bounding box threshold lower. This way, if large objects are causing LW to lag when you manipulate them, then this will cause LW to simply draw the object as it's bounding box when you manipulate it - speeding up the screen redraw and therefore responsiveness. (2) Replace your object with a low-res proxy. Essentially, create a lower resolution stand in model that has the same general dimensions as your hi-res one, then use the layout 'Replace' button to swap the object out. Remember to swap it back in though after you're done

12-09-2006, 03:04 AM	#9
Mark Super Moderator Join Date: Jan 2003 Location: Sunbury, UK Posts: 2,339	To change the bounding box threshold, hit 'd' for Display options and look about halfway down the panel. I generally keep it to around 500,000 polys on my machine (P4 3Gig/1Gig Ram 7800GT Video Card), but you'll need to experiment on your machine to get the best results. As for the boolean operations, unfortunately they can be less than reliable on many occasions. It's a sad fact that you should always save your objects before trying the operation because they can (and often do) cause LW to crash. There are a number of things you can try to make life a little more reliable. First, try segmenting your main box - maybe try two or three slices horizontally through it, and one vertically. This give LW an easier time in calculating the new mesh. You might also need to try doing your subtractions in smaller quantities - really there's no real guidelines on this - just shifting the geometry slightly might even work in some instances...