wingalls Posted October 8, 2007 Share Posted October 8, 2007 I've started playing with particles, and thought that blobbies would make a good blood effect. I may end up with streaks in the end, but in the mean time, I need to know what is causing this strange grouping of the blobbies. I've tried changing every parameter in the blobby emitter and the sprite emitter, but nothing seems to change the square groups of blobs to a continuous stream of blobs. Does the properties of the emitting surface effect the emissions? My emitter surface has four patches. If it had 49, would the emitted blobbies behave differently? The attached picture shows this unusual (I think) clumping of the blobs. When rendered, the blobs are still grouped. When stepping from frame to frame, the bounding squares stay in exactly the same place and the bubbles flow through them. In other words, at no time during the animation do blobs exist in the spaces between the blocks. Anyway, if someone knows the location of the "Wierd/Not Wierd" switch for this, please let me know. Meanwhile, I'll go back to fiddling with my Rome burning project particles. I've touched on streaks and blobbies, so I guess it's time to tackle sprites. (Why do I feel like I'm reinventing the wheel fire? Oh, I know. It's because I can't find that extensive body of work by johnl3d. Hopefully, someone will know where it went). - Wes P.S. I can't seem to get the jpg to upload, so I'll draw a picture of it. The block made of "S" is the emission source. The blocks of "B" are the resulting bubbles. SSSSSSSS BBBBBB S S BBBB S S BBBBBB BB S S BBBBB BB B S S BBBB BB B S S BBB B B BBB BBB BB SSSSSSSS B BBB B B B BBB B BBB B BB BBBBB B BB B BB BBB B B B BBBB B B BB B BBB B BBB B B BB BBBB BB B BBB BBB BB BB B B BBB B BB B BBB B B BB BB B BBB BB BBBB BB BB B B B BB BB B BBB B B BBBB B B B BBB BB B B BBB The start of a block of bubbles seems to be lined up vertically with the end of another. Horizontally, their seperation suggests the effects of gravity. P.P.S. Is it going to be One of Those Days?! First, the post won't take my upload, and then it won't let me draw any ascii art! (All the leading spaces disappeared). Let's try the ascii again: .SSSSSSSS BBBBBB .S S BBBB .S S BBBBBB BB .S S BBBBB BB B .S S BBBB BB B .S S BBB B B BBB BBB BB .SSSSSSSS B BBB B B B . BBB B BBB B . BB BBBBB B BB . . B BB BBB B B . B BBBB B B BB . B BBB B BBB B . B BB BBBB BB B . . . BBB BBB BB BB . B B BBB B BB B . BBB B B BB BB . B BBB BB BBBB . . . . . BB BB B B B . BB BB B BBB B . B BBBB B B B . BBB BB B B BBB P.P.P.S. ARRRRRRGH! I don't believe this. Apparently, this forum does not allow more than one space between letters! Ok. This is the last attempt. If you've stuck with me this far, please try this link: http://home.san.rr.com/xenasubtextcomic/ex...0of%20blobs.jpg <FILE REMOVED FROM URL> Thank you. Quote Link to comment Share on other sites More sharing options...
Hash Fellow robcat2075 Posted October 9, 2007 Hash Fellow Share Posted October 9, 2007 That's a very odd problem. I'd suggest posting a test PRJ with every essential element embedded that exhibits the problem and also state exactly what version you are using. Quote Link to comment Share on other sites More sharing options...
johnl3d Posted October 9, 2007 Share Posted October 9, 2007 I just did a blobbie trial in V14a and got this blooddrips.mov the breaks are there because I cut down on the number of blobbies but I do not see chunks blooddrips.zip 14a This probably would be better with v15 fluids did a quick test with 15 fluidblooddrips.mov Quote Link to comment Share on other sites More sharing options...
jzawacki Posted October 9, 2007 Share Posted October 9, 2007 You need to wrap them in code tags oooo$$$$$$$$$$$$oooo oo$$$$$$$$$$$$$$$$$$$$$$$$o oo$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$o o$ $$ o$ o $ oo o$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$o $$ $$ $$o$ oo $ $ "$ o$$$$$$$$$ $$$$$$$$$$$$$ $$$$$$$$$o $$$o$$o$ "$$$$$$o$ o$$$$$$$$$ $$$$$$$$$$$ $$$$$$$$$$o $$$$$$$$ $$$$$$$ $$$$$$$$$$$ $$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$$$$$$$$$$$ $$$$$$$$$$$$$ $$$$$$$$$$$$$$ """$$$ "$$$""""$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ "$$$ $$$ o$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ "$$$o o$$" $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$o $$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$" "$$$$$$ooooo$$$$o o$$$oooo$$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ o$$$$$$$$$$$$$$$$$ $$$$$$$$"$$$$ $$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$$ $$$$"""""""" """" $$$$ "$$$$$$$$$$$$$$$$$$$$$$$$$$$$" o$$$ "$$$o """$$$$$$$$$$$$$$$$$$"$$" $$$ $$$o "$$""$$$$$$"""" o$$$ $$$$o oo o$$$" "$$$$o o$$$$$$o"$$$$o o$$$$ "$$$$$oo ""$$$$o$$$$$o o$$$$"" ""$$$$$oooo "$$$o$$$$$$$$$""" ""$$$$$$$oo $$$$$$$$$$ """"$$$$$$$$$$$ $$$$$$$$$$$$ $$$$$$$$$$" "$$$"""" Quote Link to comment Share on other sites More sharing options...
wingalls Posted October 9, 2007 Author Share Posted October 9, 2007 Thanks guys, for your prompt and constructive feedback. For jzawacki: Well, duuuuuuuh! I knew shouda known that! For johnl3d: Wait. Version which? For robcat2075: I'll put up a prj file IF the problem still exists in version 14.0a, which I am loading now. Heh, funny story ... see when I got the CD update to AM2007 last week, I installed it and then didn't even think to come here for an update. Thought I was getting AM2007. Ah, well. So ... when I saw john's (can I call you John?) post with a test in ver 14.0 and your post about checking the version on the prj ... well ... I finally put two and two together and went hunting for the upgrade. Ah ... it looks like the install is complete ... and now instead of version 13.0I (13.0L? ... can't tell with that font), I have version 14.0a ... and the problem is still there. So attached here (or at http://home.san.rr.com/xenasubtextcomic/ex...obbies-test.prj <FILE REMOVED FROM URL>, if I can't get the upload to take) is the project that is producing the problem. What's not shown in the project file is that I'm running AM on a Windows XP (SP2) platform, and using Netscape 8.1.3 to (still) unsuccessfully upload an attachment. Thanks again, guys. - Wes Quote Link to comment Share on other sites More sharing options...
Luuk Steitner Posted October 9, 2007 Share Posted October 9, 2007 I once had a problem like that. I was making spraying water that was moving fast. The blocks of particles where caused by the FPS limit. Apparently the particles are only emitted exactly on each frame and not calculated in between. One way to get better results out of this is increasing the FPS and render only the odd frames for example. Maybe your problem is the same, so you can try if this works for you. Quote Link to comment Share on other sites More sharing options...
johnl3d Posted October 9, 2007 Share Posted October 9, 2007 Wes You had the material messed up. Instead of the normal attribute for the blobbies it was changed to sprites and got your interesting effect. I redid the material and just roughly set the parameters and got this Here is the revised project file ablobbies_test.zip Quote Link to comment Share on other sites More sharing options...
wingalls Posted October 9, 2007 Author Share Posted October 9, 2007 Oh, ho! Thanks Mr. Gnome (can I call you Mr. Gnome?). Since this was my first blobby, I didn't know that a sprite emitter wasn't part of a blobby emitter. (Thought it was just a reuse of code kinda thing). Apparently, the "Change Type To" menu option has different results depending on what type you are changing from and to. You can change from a blobby or a streak emitter to any of the other types without any apparent difficulty, and changing from a sprite system to a hair system (and vice versa) works. But if you change from a sprite or hair system to a streak or blobby emitter, trouble ensues. In summary: "Change Type To": Emitter -> Emitter OK Emitter -> System OK System -> System OK System -> Emitter STRANGE There may be a valid reason for a blobby or streak emitter to have a sprite or hair emitter under it instead of attributes. If anyone can think of it, let me know. In the mean time -- THANKS EVERYONE. - Wes Quote Link to comment Share on other sites More sharing options...
wingalls Posted October 9, 2007 Author Share Posted October 9, 2007 Upon further investigation ... Luuk Steitner, you are todays winner! (Yay.) Here are two identical projects except for the FPS: 30 FPS - http://home.san.rr.com/xenasubtextcomic/extra/30fps.jpg 300 FPS - http://home.san.rr.com/xenasubtextcomic/extra/300fps.jpg For johnl -- your prj will display the same effects as mine if you change the Blobby Emitter properties thusly: Viscosity -> 0% Rate of Emission -> 1500 Initial Velocity -> 100 The implications of these images are mind-staggering: http://home.san.rr.com/xenasubtextcomic/ex...0fps-bounce.jpg http://home.san.rr.com/xenasubtextcomic/ex...0fps-bounce.jpg Do you think Newton considered the effects of FPS when he wrote his laws of motion? Thanks again, everybody. - Wes Quote Link to comment Share on other sites More sharing options...
Luuk Steitner Posted October 9, 2007 Share Posted October 9, 2007 Luuk Steitner, you are todays winner! (Yay.) Great! what did I win? Quote Link to comment Share on other sites More sharing options...
wingalls Posted October 9, 2007 Author Share Posted October 9, 2007 Luuk Steitner, you are todays winner! (Yay.) Great! what did I win? A great big heapin' bucket fulla everlasting gratitude. (Gratitude non-negotiable. Void where prohibited). Quote Link to comment Share on other sites More sharing options...
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