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Tuesday BryceTalk Q n A
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Tuesday BryceTalk Q & A, June 15, 1999
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Hometime: instead of world mapping AuntiAlias: PJF, is your comment about clouds? if so, jump right in! :D gdmsynth: Yes, why are the spheres sometimes (or partially visible)? AuntiAlias: yeah, changing to obejct mapping sometimes helps MetaBrian: It depends on where the texture falls... gdmsynth: You're referring to the texture mapping in the Materials lab right? ahole: yes AuntiAlias: I've made my clouds simple plain fuzzy spheres with no texture-driven alfa just to get position.... Hometime: yes... DreamVoyager: partly visible: you also get a sharp line often, at the transit point between lighted and shaded area of the sphereical cloud, that overlaps the transparent parts sometimes! MetaBrian: Yes, gdm, also try playing with the scale/rotation/translation of the texture... Hometime: and 3D noise AuntiAlias: but mostly get them so that they don't intersect one another gdmsynth: OK I'll try some of these ideas....its just that among hundreds, finding the particular troublesome cloud is a challenge! Hometime: delete it :-) gdmsynth: (Yeah, I like delete). AuntiAlias: that's what solo mode is for.... and using control-click to select only the objects that are under your mouse cursor! MetaBrian: It's the easiest solution yet! DreamVoyager: if you can find which to deleate if you have over 50 shperes... AuntiAlias: I have heard rumors and requests that, in Bryce's potential future, being able to create clouds that have positive union booleans is definitely doable..... Brian? Ales? care to comment? MetaBrian: Name them..."trouble sphere1", "trouble sphere 2"... Hometime: yes!!! gdmsynth: I can use the Control +click and then get a menu selection of objects to choose from. But it doesn't seem to be selecting everything in view. What's going on here? ahole: Susan i don't understand... AuntiAlias: It selects everythign located under your cursor gdmsynth: Maybe I'm just not clikcing in the right spot? AuntiAlias: Well... you can get a glass texture by boolean union (two positive obejcts) with smae glass texture gdmsynth: There are LOTS of clouds under the cursor (some partially visible). Hometime: ! AuntiAlias: so.. how about positive boolean union of cloud objecst that look like the ice-cream-cone kinda clouds! MetaBrian: Yeah, we'll play around with that while sprucing up the rendering of the fuzzy/additive modes... AuntiAlias: so, gdm, select all of thsoe, go to solo mode, and see if you can whittle them down to the problem one! okay.... has everyone had their say about how to do clouds from spheres? ; ) gdmsynth: OK thanks. Lots of ides to try. Done. AuntiAlias: 3dradmd, you're on!! 3dradmd: In the older versions up to Br3D I could hide the interface using CMD(Apple)-Tab. That does not seem to work in B4. Thoughts? ahole: Susan, you know the answer to this one, right? I forgot :) AuntiAlias: I've forgotten it... : ) MetaBrian: Uh oh 3dradmd: Is it a bug? poserbryce: tell me what you all think... http://poser.virtualave.net/inteligentmars.mov MetaBrian: The problem is that the new OS is getting in the way... ahole: 3drad it's still works. I juts forgot how to go about it> 3dradmd: Thats what I suspected MetaBrian: Now, CMD+TAB is an app-shifter AuntiAlias: not a bug, different key combination MetaBrian: Yeah, I think we changed it 3dradmd: Thats right, the app shifts As of OS8.5 MetaBrian: If we didn't change it yet, we will...I'll check it out 3dradmd: The manual still has the old combo I believe, CTRL TAb was also suggested but also did not work MetaBrian: CMD+TAB works for me and I'm on the latest OS...perhaps you can turn off the app-switching functionality I don't think it's on for me 3dradmd: Sorry to have stumped you all :) MetaBrian: If you're attached to it though, you may have a problem 3dradmd: I can try that...thanks gdmsynth: ? AuntiAlias: I've been trying all manner of combinattions, haven't foudn it yet I'll keep searching... ahole: 3dradmd try cmd + shift + tab AuntiAlias: CBXTX... go ahead!!! CBXTX: ! Croaker's disappearing object could be as simple as a positioning prob. Objects underwater when viewed from above do not appear to be where they actually are due to difraction. 3dradmd: I have to say this is my first time here but this is very cool to talk to you guys No it just brought the talk windo back CMD shift TAB I mean MetaBrian: I told Croaker about that...I suggest reducing this effect by lowering the amount of refraction ahole: what about option? cmd + option + tab CBXTX: Difraction not refraction. PJF88: cmd? Does this trick work in Winders? 3dradmd: BINGO! cmd option tab did it! ahole: There you go 3dradmd: Thanks ahole: PJF there is no cmd on windows MetaBrian: Yes, CBXTX, we only have refraction to pull off these effects PJF88: I know! lol ahole: or i don't know what do you mean. :) AuntiAlias: Boru, go for it!! 3dradmd: Thanks Susan... that does it for me for now boru: Remind me: how many levels of gray does the terrain editor recognize? ahole: 65535 boru: It would be *great* if we could access all the Painter brushes from within the terrain editor ... without losing all those shades of gray. CBXTX: Put a ruler half into a tank of water and it will not appear to be strait due to the fact tha the water bends the light. so Croaker's object may not appear to be where he has the camera aimed. ahole: It would, wouldn't it? boru: yes it would AuntiAlias: Queue-- PJF88, Hometime MetaBrian: Understood, CBXTX, but that's exactly what refraction does! Heck, my dictionary doesn't even have the word "difraction" in it... boru: I'm done asking if they're done answering CBXTX: How odd. PJF88: CBXTX: I think that's refraction, not 'difraction'. Sky Pilot: That's Refraction--Difraction has to do with light passing a sharp edge. DreamVoyager: Isnt difraction the light curving ARROUND objects, rather than when broken THROUGH objects which is refraction? CBXTX: and being bent. DreamVoyager: Right, Sky MetaBrian: Yeah, we'll run with that idea...next ? please AuntiAlias: PJF88 -- you're on!! PJF88: I didn't ask a question, but: Re coloured haze comments: Haze is suspended particles, including water. These particles not only absorb light, they refract it. Therefore it is possible to have haze that has a colour shift. here we go again... ;-) MetaBrian: You're right. AuntiAlias: Well, and there's color perspective (or colour perspective) ; ) ahole: That's exacly where all the scattering comes from. MetaBrian: So, we could simulate that somehow for the effects you're after DreamVoyager: Yes, it is possible, but it is MORE possible to have the situation that haze is an optic (refraction?) effect, mainly, and not a coloring effect. PJF88: But refraction can cause a colour shift. ahole: You're right PJF DreamVoyager: Yes, I know... but that is not the case in Bryce as now... as of now, it is ONLY a coloring effect. Not an optic distortion AuntiAlias: Last question/comment!! gdmsynth: (And very abrupt between Haze OFF and ON). AuntiAlias: Hometime!! You are ON!! Hometime: no sorry, no question, was just thinking about the cloud issue... has to be intersecting of the objects. Ungrouping any groups will help to select single objects from among a crowd. draw a marquee around them, then go solo and eliminte MetaBrian: Yes, DV, there is no distortion, but isn't that caused by temp changes more than by haze? DreamVoyager: Right, gdm gdmsynth: ? ahole: What i am trying to say, is that some wavelengs from the white light spectrum don't make it onto the retina of your eye - which causes change in the color perception. DreamVoyager: Sint that much what haze is, IRL? PJF88: Bryce haze colour simulates the effect of haze refraction. AuntiAlias: We've been at this for 2 hours now... time to wrap up here...... : ) MetaBrian: Right....is that all, anyone else...my stomach is growling Hometime: thanks everyone!!! PJF88: thanks guys. DreamVoyager: I know that is the meaning, but for me, it is just coloring... I miss the actual haze refraction, withoug color. Again... if you dont see it in the south, come here to sweden and take a look :-) MetaBrian: You're all welcome gdmsynth: Thanks Hometime...One last question? Hometime: enjoy your lunch DreamVoyager: OK. Thanks Susan, Brian and Alec. This has been extreamly valuable! AuntiAlias: Thanks Ales, Brian, and everyone for the Q and A!! :D Next week, we'll be... we'll be... AuntiAlias: anyone want to volunteer to lead a discussion on terrain editor? MetaBrian: Glad to be able to help gdmsynth: Thanks everyone. ahole: It was fun... Heather: not me, AuntiAlias Hometime: :-) DreamVoyager: You have made my life happier by bettering Bryce allready. Meeting you is a pleasent topping :-) PJF88: lol boru: Susan, does the volunteer need to know anything? DreamVoyager: (But if some of my wants slip into the next code, Id not mind... ;-) PJF88: Who does? ;-) AuntiAlias: one would *hope* so, yes, boru! : )
>>>> Next week (Tues): Terrain Mania with Chris Casady and Klaus Busse |
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