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#3961 Car Modelling Help

Posted by wetty on 06 October 2006 - 10:45 PM

i got liek 4 questions 1. Does anyone know of (or how to make) car windows? 2. i have followed some tutorials on making the car.. and i had just finished modelling the whole car like 2 days ago and i have found black spots inbetween(or near) some of the polygons. if anyone knows how to fix this ( besides the align normals/reverse normals) plz inform me thanks :(/> 3. texturing the car.. im just trying to make a nice bright green color thats nice and shiny so it looks like a realistic clean car. also if anyone knows how to put stripes on a car or designs on the side of the car that whud be helpful. 4. headlights and taillights - any tutorials on this. if so i whud appreciate it if u post the link here thanks everyone for all ur help edit: sorry im using C4d and i have all the modules and some plugins
  • MichaelCigh, Juliyaseen, Traceypale and 61 others like this


#3742 Sky Or Sphere For Gi ?

Posted by SFX on 26 September 2006 - 04:41 PM

Doing some tests and it seems there is a big difference i started with a sphere radius 10000 and got some pretty poor results so i upped all the settings and still did not get much of an improvement here are the rad settings : strength 100 % Acc 80 % PP1/1 DD 2 SS 4000 Min R 20 Max R 200 using a sphere with radius 10000 i got this in about 30 secs ( 1.6 Ghz AMD 750 MB RAM) 10000msphere.jpg next i brought the sphere radius down to 1500 M and got this in about 3 mins 350.jpg There is an vast improvement in the rad but what a leap in render time !! Then i used a sky object and got this in 2 mins 22 secs sky222.jpg So it seems that the size of a sphere used as a sky object GI has a big impact on render qulaity and speed and it seems a sky object is the best solution
  • ErnemtWeex, Eniliounap, LeomardKa and 6 others like this


#4097 Reflection Shows Whole Shape - Doesn't Use Alpha Channel?

Posted by matt bailey on 13 October 2006 - 06:04 AM

I wonder if anyone can help? I have a shape set up that uses an alpha channel to mask out half of it. However, the reflection of this object in the object behind shows up the whole shape!?

Anyone know what's going on and can anything be done about it?

Here's a pic of the problem. You can clearly see the rectangular reflection, but the alpha is a jagged rip:

Posted Image
  • Stuarttate, Milmonpt, Darresjomy and 5 others like this


#314 Al's Mugshot

Posted by SFX on 20 September 2005 - 08:49 AM

OK here is a quick render done in C4D, it wasn't till i got the mesh into C4D that i saw how bad it actually is !! The nose bridge is too wide and the jaw is wrong.. but I am sure with more work i could get a much better result

354 kb QT

Here is an example of using morphs with a series of meshes..err.not Al !!, timing is too slow but this was a first attempt

403 kb QT
  • RolandMi, AlfredEt, CharlesBoon and 3 others like this


#312 Al's Mugshot

Posted by SFX on 20 September 2005 - 08:15 AM

Well what an interesting face !! Is it really Al ? I just could not get the profile right but the frontal is not to bad, quick 3d fly around to follow in the next post Original Frontal Al_Front.jpg CGI Frontal alrenf.jpg Original Profile Al_Side.jpg CGI Profile alrens.jpg Youth CGI youth.jpg Older CGI ancient.jpg African CGI afrrican.jpg SE Asian CGI seasian.jpg Asian CGI indian.jpg The English Are Coming englishcomming.jpg
  • RolandMi, AlfredEt, CharlesBoon and 3 others like this


#2658 60 Free Cinema 4d Plugins!

Posted by yarko75 on 10 June 2006 - 01:14 PM

This website is amazing, giving you free professional plugins (11 in total)
http://www.welter-4d...plugins_en.html

More free plugins like "polygon to slpine" or "Weight it" plugins (15 in total)
http://homepage2.nif...eria/index.html

All of these plugins are free except the first one (9 in total)
http://www.bensj.com/Plugins.html

Again A bunch of free plugins, it doesnt show what the plugins do but look around the site to find out, Click the Porfolio:downloads tab on the top(10 in total)
http://www.the3ddesigner.de/

2 plugins and 10 expressions (12 in total)
http://www.3dweave.c...d_plugin_us.php

Just 1 plugin which is called UV2BMP (1 in total)
http://www.r-j.de/c4d/uv.htm

The only free one is "geomcheck" (1 in total)
http://www.lotsofpix...om/plugins.html
  • Thomasmi, buymakeupgi, marizLPi and 3 others like this


#8366 Problem With C4D Vray Shadows

Posted by joelamotta on 11 October 2011 - 01:02 PM

I am running C4D R12 and the latest version of VRAY. I have a Mac OSX 10.5.8 with 2.4 GHz Intel Core 2 Duo. Memory is 2 GB 800 MHz DDR2 SDRAM. Currently there are over 132 GB of open space on the hard drive.

I have been working with this tutorial.

My problem that I have is with VRAY shadows. Basically, I have set up my scene with all the exact same settings for materials, lighting and camera as specified in the above tutorial. My scene renders OK with VRAY, but it doesn't create shadows. You can see a still image of the latest of my 130 renders here. And you can see a still image of the tutorial's final render here.

During the render it seems as though shadows do appear in the first pass, but then quickly disappear soon after that. I rendered the final tutorial scene with no problems. Then I created a new scene and pasted the tutorial final scene within it and it all rendered just fine with great shadows and lighting. This was all done on the same machine with the same C4D R12 and VRAY software. So it is not a C4D or VRAY bug. I also opened the tutorial final scene deleted everything except the light and camera. Then I pasted my scene into it and again it rendered with no shadows. So I am pretty sure that the problem is somewhere within my scene. It's not VRAY and not C4D. If anyone has any idea on what it could be, please let me know. Thank you very much in advance for all of your kind help.

P.S. I tried to upload my scene and the tutorial final scene with this post but they were too big. Is there another section on Cinema 4D Tutorials where I can do that? Thanks again.
  • Josepha, XjethyImisy, CharlesSTO and 2 others like this


#4611 Important Info For All The Forum Members

Posted by SFX on 24 November 2006 - 05:30 AM

Husband 1.0 Important user notes: There are alot of pressures to upgrade from Boyfriend 6.0 to Husband 1.0. However before doing so make sure you understand the implications of this change... For one, system activity will be severely limited and you will be compelled to instigate rigorous daily routines in space management, garbage disposal and disc cleaning often with an accompanying increase in system administration. This program can also be a drain on many resources and demand constant attention. You will encounter an increased amount of interrupts and error messages, while the program often cancels processes without warning, very often crashing the system. In addition, Husband 1.0 often refuses to respond to your commands and frequently appears to be running processes which you have not authorised. If this happens a lot, do not respond to any interactive requests from the program and severely limit demand for extra bytes. Every evening there will be a huge surge in demand for megabytes and if not satisfied, the process will become unresponsive and has been known on occasion to damage hardware. Every so often you will be promised a new release of the program, but unfortunately, upon loading this new release, it is generally found to be almost identical to the old one, with very few feature changes and most of the same old annoying bugs which you were undoubtedly promised would not be there in the new release. Put up with it or discontinue use entirely. Husband 1.0 is a flawed program; many of the bugs are so deeply encoded that, even if they can be located, they are inpossible to eradicate and have to be tolerated. Husband 1.0 will frequently make use of low level language and may not understand higher level commands so you must be prepared to use basic functions when required. Often a few robust algorithms in handshaking mode will produce a good response. After a while, Husband 1.0 has a tendency to take up more space than originally allocated, often spreading in size and slowing down correspondingly. If this happens, be very careful as there is increased risk of complete system failure. Around this time, Husband 1.0 will also tend to lose bits from the top of the stack, although these will often multiply and be found lower down the stack. Another problem with this program is that Husband 1.0 can also spawn unknown child processes, which can sometimes inadvertently appear, make huge demands on the program and force unwanted interaction with old versions of 1.nightstand. Sometimes, Husband 1.0 will end a process prematurely, before you have the required result. This generally results in spawned processes scattered over your system which must be located and removed. More often than not, however, Husband 1.0 will appear to take an inordinately long time to complete a relatively simple process. While waiting for tedious processes to complete you may find it useful to distract yourself by perusing manuals for alternative programs, Stud 2.0 or Lover 6.9 On completion of a process, Husband 1.0 will often inadvertently apply the sleep command, or suspend system activity with a Ctrl ZZ. There is nothing you can do in this case, but leave the program and try again later. Ultimately, as the program becomes older, it will become more difficult to produce hardcopy, and you will find that most of you work ends up on floppies. In addition, you will be needing software support more often than you'd like. If and when this happens, try to find a copy of Toyboy 1.1. Make sure you have used Ctrl ZZ on Husband 1.0 before loading Toyboy 1.1 and, of course, check for viruses before using any new program. Toyboy 1.1 should come with new hardware which can be plugged into any of your ports. Girlfriend 1.0 Important user notes: Last year a friend of mine upgraded GirlFriend 1.0 to Wife 1.0 and found that it's a memory hog leaving very little system resources for other applications. He is only now noticing that Wife 1.0 also is spawning Child-Processes which are further consuming valuable resources. No mention of this particular phenomena was included in the product brochure or the documentation, though other users have informed him that this is to be expected due to the nature of the application. Not only that, Wife 1.0 installs itself such that it is always launched at system initialization where it can monitor all other system activity. He's finding that some applications such as PokerNight 10.3, BeerBash 2.5, and PubNight 7.0 are no longer able to run in the system at all, crashing the system when selected (even though they always worked fine before). At installation, Wife 1.0 provides no option as to the installation of undesired Plug-Ins such as MotherInLaw 55.8 and BrotherInLaw Beta release. Also, system performance seems to diminish with each passing day. The features he'd like to see in the upcoming Wife 2.0 include: - A "Don't remind me again" button -Minimize button - An install shield feature that allows Wife 2.0 to be installed with the option to uninstall at any time without the loss of cache and other system resources. - An option to run the network driver in promiscuous mode which would allow the systems hardware probe feature to be much more useful. I myself decided to avoid all of the headaches associated with Wife 1.0 by sticking with Girlfriend 2.0. Even here, however, I found many problems. Apparently you cannot install Girlfriend 2.0 on top of Girlfriend 1.0. You must uninstall Girlfriend 1.0 first. Other users say this is a long standing bug which I should have been aware of. Apparently the versions of Girlfriend have conflicts over shared use of the I/O port. You think they would have fixed such a stupid bug by now. To make matters worse, the uninstall program for Girlfriend 1.0 doesn't work very well leaving undesirable traces of the application in the system. Another thing that sucks -- all versions of Girlfriend continually pop-up little annoying messages about the advantages of upgrading to Wife 1.0 BUG WARNING Wife 1.0 has an undocumented bug. If you try to install Mistress 1.1 before uninstalling Wife 1.0, Wife 1.0 will delete MSMoney files before doing the uninstall itself. Then Mistress 1.1 will refuse to install, claiming insufficient resources. BUG WORK-AROUNDS To avoid the above bug, try installing Mistress 1.1 on a different system and never run any file transfer applications such as LapLink 6.0. Also, beware of similar shareware applications that have been known to carry viruses that may affect Wife 1.0. Another solution would be to run Mistress 1.0 via a UseNet provider under an anonymous name. Here again, beware of the viruses which can accidentally be downloaded from the UseNet.
  • GeraldKt, ModyyRern, PolyRern and 2 others like this


#4109 Reflection Shows Whole Shape - Doesn't Use Alpha Channel?

Posted by dataflow on 13 October 2006 - 07:53 PM

I wonder if anyone can help? I have a shape set up that uses an alpha channel to mask out half of it. However, the reflection of this object in the object behind shows up the whole shape!?

Anyone know what's going on and can anything be done about it?

Here's a pic of the problem. You can clearly see the rectangular reflection, but the alpha is a jagged rip:

Posted Image


is your altha channel black and white because altha is based on color, where white is transperent and black is not any color in between is going to be transperent to some degree
  • Darresjomy, Nowardkiz, ArthusBob and 2 others like this


#3962 Car Modelling Help

Posted by doingthedeed on 06 October 2006 - 11:14 PM

What program are you using? I know for Cinema 4D, Bodypaint could be used to make the stripes, and the rest of the problems I know of one tutorial for Headlights at least (for C4D). I don't know about the other two questions
  • WilliamCow, Leonardovop, NewsletterOr and 2 others like this


#6258 Be Afraid..be Very Afraid !

Posted by SFX on 06 January 2008 - 02:59 AM

I doubt if there would be much left to collect, it would impact with the force of about a 10 megatons nuclear bomb
  • Alealokato, zoofteroppy and Tranisgalt like this


#5498 Animation Of Water

Posted by SFX on 25 February 2007 - 06:45 AM

Have a look at the ocean tutorial available for download
  • ElenMarselKi, Vinzentcem and Uomingib like this


#8157 Explosion Fx

Posted by machenier on 06 December 2010 - 09:38 PM

Hi,

I'm currently trying to explode an object with the Explosion FX deformer. Everything was fine until I saw that the fragments were passing through the floor. I tried to do the dynamics directly with this combination:


-Collision detection tag
-Rigid body dynamic tag
-Solver


It doesn't worked and than I tried to make the dynamics in Realflow 5. The problem is when I import the .sd file, the fragment are oversized (a lot) and it's impossible to do nothing. What should I do?


Thanks!

Attached Thumbnails

  • Capture d’écran 2010-12-06 à 22.31.03.png
  • Capture d’écran 2010-12-06 à 22.36.02.png

  • bestcigKn and DonaldJEW like this


#8091 Uvv A Sweep Nurb

Posted by Davied on 12 October 2010 - 01:54 AM

Is it possible to UV unwrap a sweep nurb that has animation on it without losing the animation. I know i can make it editable, but when i do, it loses all the animation.
  • Stephenhaf and Carolyndorb like this


#5565 Science, Archaeology And Ancient History Articles Of Interest

Posted by SFX on 03 March 2007 - 11:52 AM

News Articles

Prehistoric Studies

First Humans: Time of Origin Pinned Down
http://www.livescien...himp_split.html

Stone Age Adults Couldn't Stomach Milk, Gene Study Shows
http://news.national...urope-milk.html

'First' Sicilian woman gets face
http://ansa.it/site/...6_12647819.html

Earliest horse figures of Anatolia in Eskiºehir
http://www.turkishda...p?enewsid=66797

Man's best friend lends insight into human evolution
http://www.physorg.c...ws91978453.html


Ancient History

Sami jaw bones found in display case
http://www.thelocal.se/6487/20070222/

Remains found in cave hold ancient mystery
http://www.courier-j...STS04/702230432

Ancient Kingdom of Gojoseon Turned from Myth into History (Korea)
http://english.donga...d=2007022488438

Raining on theories of Amazonian rainforest populations
http://www.usatoday....-amazonia_x.htm

Jesus Family Tomb Believed Found
http://dsc.discovery...=20070225073000

Tourist invasion threatens to ruin glories of Angkor Wat
http://observer.guar...2020821,00.html

Ancient Izumo in the spotlight
http://www.yomiuri.c...226TDY19001.htm

France to return 'pharaoh's hair' to Egypt
http://news.yahoo.co...gy_070226154815

Find of Roman coin shows ancient Britons in a new light http://www.telegraph.../26/ncoin26.xml

Thapar for focus on linguistic exchanges to study Aryans (India)
http://cities.expres...p?newsid=224205

Sceptre from Roman emperor exhibited http://www.telegraph...27/wroman27.xml

Viking navigation hypothesis under foggy and cloudy skies requires more light
http://www.physorg.c...ws91798327.html

'Israelites didn't build the pyramids'
http://www.ynetnews....3370258,00.html

New DNA study helps explain unique diversity among Melanesians
http://www.eurekaler...u-nds022207.php

Cemetery of headless skeletons holds key to origin of Polynesians
http://www.nzherald....jectid=10426344

Rabbis seek to resume animal sacrifices
http://www.jpost.com.....icle/ShowFull

Ancient Egypt Meds: Prayer, Laxatives
http://dsc.discovery...=20070228104530


Archaeology

Ancient city of Knidos seeks light
http://www.turkishda...p?enewsid=66606

‘Rakhigarhi is the largest Harappan site ever found’
http://cities.expres...p?newsid=223720

Unearthing a hidden past (UAE) http://www.gulfnews....e/10106600.html

Bulgaria's Perperikon - Metallurgical Centre 13 Centuries BC (Thracians)
http://www.novinite....ws.php?id=77114

UNESCO to examine dig near Jerusalem shrine
http://www.alertnet....k/L24411752.htm

Copan: Colourful cultural destination
http://www.abbynews....cat=44&id==

Could the “Greenland example” help resolve the Parthenon Marbles dispute?
http://www.theartnew...le01.asp?id=576

Destruction of the Achaemenid Dam of Didehgan (Iran)
http://www.chnpress....ction=2&id=7016

Skeleton crew digs up the past
http://www.peterboro...5&SectionID=845

French, Iranian archaeologists excavating Achaemenid palace in Bolaghi Valley
http://www.mehrnews....x?NewsID=453377

Historic dig at planned mine site
http://news.bbc.co.u...yne/6394935.stm

Scholars, clergy slam Jesus documentary
http://news.yahoo.co.../jesus_s_burial

Titanic Discovery or Sinking Feeling? (Alleged Jesus Tomb)
http://www.archaeolo...features/jesus/

Archaeologists, scholars dispute Jesus documentary
http://edition.cnn.c...sus.sburial.ap/

37 archaeological sites in Delhi are gone (India)
http://cities.expres...p?newsid=224206

First International Congress Of Eurasian Archeology To Be Held In Izmir
http://www.turkishpr...s.asp?id=164360

Hand Dug Corridors Discovered in Nooshabad Underground City
http://www.payvand.c...7/feb/1360.html

Jordanian-Bahraini Archeologists find More than 100 Artifacts
http://www.petra.gov...eb/26/25000.htm

Artifacts could be from early galleon (North America)
http://news.yahoo.co...dbynwnh_T9FeQoB

Pyramids must rise above poll, says irate Egypt
http://news.scotsman...fm?id=298542007

Developer seeks to preserve ancient ruins (Anasazi)
http://www.sltrib.co...3118?source=rss

UNESCO experts tour controversial Jerusalem dig
http://news.yahoo.co...WDKYz0aCLVFeQoB

A trading hub by the Strymonas River
http://www.ekathimer...t.asp?aid=80634

An unknown ancient city is brought to light
http://www.ekathimer...t.asp?aid=80635

Ruin raiders target ancient relics in Shaanxi
http://english.peopl...228_353062.html

Greek archaeologists find Hera statue
http://news.yahoo.co...XWBomyL_YxFeQoB

Ancient Solar Observatory Discovered
http://news.yahoo.co...MCXHVFRBwZFeQoB

http://news.bbc.co.u...ech/6408231.stm

Ancient olive oil factory discovered in Milas
http://www.todayszam...04178&bolum=101

Italian archaeologists to join international efforts to save Sudan's ancient artifacts
http://english.peopl...301_353343.html

Vandals Desecrate Las Vegas Cultural Site
http://www.lasvegasn...y.asp?s=6158042






General Science

Cloning special: Dolly: a decade on
http://www.nature.co...ll/445800a.html

Record power for military laser
http://news.bbc.co.u...ech/6380789.stm

A message for millennia -- in bacteria
http://news.yahoo.co...KJErPe1vkLPOrgF

http://www.guardian....2018550,00.html

Strange New Creatures Found in Antarctica
http://www.livescien...odiversity.html

Collapse of two iceshelves exposes Antarctica's seabed beauty
http://news.yahoo.co...ca_070225214646

The Enduring Mystery of Light
http://www.livescien...bout_light.html

The Science of Getting It Wrong: How to Deal with False Research Findings
http://www.sciam.com...843F150B0DE1355

Scientists invent real-life 'tricorder' for chemical analysis
http://www.physorg.c...ws91816015.html

Studies Shed New Light on Blue Whales and Their Calls
http://www.physorg.c...ws91818516.html

Huge 'Ocean' Discovered Inside Earth
http://www.livescien...ng_anomoly.html

Mission to Study Earth's Gaping 'Open Wound'
http://www.livescien...sed_mantle.html


Space Sciences

NASA Has Plan If Astronauts "Lose It"
http://www.cbsnews.c...in2508877.shtml

Looking for Life on Jupiter's Icy Moon
http://www.redorbit....moon/index.html

Camping on the Moon Will Be One Far Out Experience
http://www.physorg.c...ws91464025.html

Iran fires research rocket not space missile: agency
http://www.sciam.com...BE7EB83295B0324

Martian moon 'could be key test'
http://news.bbc.co.u...ech/6324923.stm

Could we have hitched a ride on UFOs? (England)
http://www.guardian....2018675,00.html

Nasa joins with Virgin to design passenger planes for space
http://www.guardian....2018366,00.html

Virgin spaceship taking shape
http://www.msnbc.msn.com/id/17347824/

New South Pole telescope to study mysterious dark energy
http://www.usatoday....telescope_x.htm

Milky Way Black Hole May Be a Colossal 'Particle Accelerator'
http://www.physorg.c...ws91731386.html

Developing Sensors to Search for Life on Mars
http://www.redorbit....mars/index.html

Jupiter's Watery Moon to Get Closeup http://dsc.discovery...=20070227103030

Space station safety report is issued
http://www.physorg.c...ws91819994.html

Milestone for giant physics lab
http://news.bbc.co.u...ech/6402493.stm

http://news.yahoo.co...ce_070228162820

ESA director discusses space missions
http://news.yahoo.co...zH7Mluk2uJvieAA

Volcano Blows as Space Probe Flies By http://dsc.discovery...=20070228130000

Physicists pioneer new super-thin technology
http://www.physorg.c...ws91891781.html

Budget crunch delays NASA's moon ship
http://www.usatoday....on-budget_x.htm

Mars Melt Hints at Solar, Not Human, Cause for Warming, Scientist Says
http://news.national...rs-warming.html


Climate Change, Alternate Energy and Hazard Research

Professor demonstrates new hydrogen fuel system
http://www.physorg.c...ws91436391.html

Huge polar study about to begin
http://news.bbc.co.u...ech/6389857.stm

Where Bush would steer energy R&D
http://www.csmonitor...01s01-usec.html

Scientist: Bulldoze Coal Plants
http://www.livescien...oal_plants.html

Emirates, MIT Team Up for Green Energy
http://www.redorbit....ergy/index.html

Going green? Try solar handbags, wind turbines
http://www.cnn.com/2...reut/index.html

Despite Warnings, Ocean Circulation Not Slowing Down
http://www.livescien...ocean_circ.html

Scientists Offer Climate Plan to U.N.
http://www.livescien...7_ap_gw_un.html

UFO science key to halting climate change: former Canadian defense minister
http://news.yahoo.co...wplzMeuaKPPOrgF

Do U.S. Emissions Violate Human Rights?
http://www.cbsnews.c...in2528648.shtml

Canada scientists peer into Arctic abyss, to see future
http://news.yahoo.co...PgClVtHw3XPOrgF

UN chief to discuss climate change at G8 summit in June
http://news.yahoo.co...PQG5CJJ3Q7POrgF



Medical Sciences

Developing Artificial Retina: Electric Link Between Neurons, Light-Sensitive Nanoparticle Films Created
http://www.physorg.c...ws91799138.html

Researchers confirm association between gene and intelligence
http://www.physorg.c...ws91799494.html

New Study: The Brain is Chaotic
http://www.livescien...rain_chaos.html

Stone Age solutions to modern-day depression
http://www.bellevill...ng/16792355.htm

Deconstructing Brain Wiring, One Neuron at a Time
http://www.physorg.c...ws91958783.html



Other News

Is Bigfoot Living In The Forest Above Marysville? (United States)
http://cbs13.com/see..._057234544.html

Book excerpts can be searched online
http://www.msnbc.msn.com/id/17365201/

The Vatican turns away followers of the 'new Padre Pio' http://www.telegraph...26/witaly26.xml



Reports

N/A


Additional Informational

Upuaut Project
http://www.cheops.org/

Alexandria since the Arab conquest
http://weekly.ahram....02/607/her2.htm

The Pyramid mystery
http://weekly.ahram....02/607/her1.htm

The Lost tomb of Jesus: Discovery Channel
http://dsc.discovery...w99-502-ah-1024

The Antikythera Mechanism
http://www.archaeolo...ntikythera.html
  • jonijx60 and stephanietb2 like this


#4714 Be Afraid..be Very Afraid !

Posted by SFX on 02 December 2006 - 03:14 PM

Edit June 2009

On June 10, 2009 a Space.com article titled "Military Hush-Up" reported: "Scientists have benefited from data gleaned by U.S. satellites of natural fireball events [meteors] in Earth's atmosphere - but no longer. A recent U.S. military policy decision now explicitly states that observations by government spacecraft of incoming bodies and fireballs are classified secret and are not to be released. Scientists say not only will research into the threat from space be hampered, but public understanding…will be diminished…Where the space-based surveillance truly shines is over remote stretches of ocean…But all that ended within the last few months, leaving scientists blind-sided and miffed by the shift in policy. scientists want to know about these events so they can better predict the risk here on Earth. 'Fireball data together with astronomical observations of larger near-Earth asteroids define the nature of the impact hazard and allow rational planning to deal with this issue,' said David Morrison a Near Earth Object (NEO) scientist at NASA's Ames Research Center, 'so it's ironic that the availability of these fireball data should be curtailed just at the time the NEO program is moving toward surveying the smaller impactors that are most likely to be picked up in the monitoring program. These data have been available to the scientific community. It's unfortunate this information is now shut off just when it's becoming more valuable to the community interested in characterizing near Earth asteroids and protecting our planet from asteroid impacts.'" - Space.com, June 2009

EDIT Aug 2009
NASA cannot keep up with killer asteroids
Congress assigned mission four years ago, but never gave NASA money

WASHINGTON - NASA is charged with spotting most of the asteroids that pose a threat to Earth but does not have the money to complete the job, a U.S. government report says. See last post for details

How many comets do you think there are in and around our solar system ?

1000 ?
10,000 ?
A million ?

well i have been doing some more research for my mars project ( yes i know i have been "researching" this for years !! it's just that it would be such an epic project and to do it justice the renders would have to be top notch..i am a bit doubtful if i am really capable of doing it justice..so i research !!)

Firstly there is of course the confusion as to what is the difference between an asteroid and a comet, the standard differences are these :

A comet gives off gas ( this gives the tail) though many comets can become inert and many asteroids have been known to "wake up" and out-gas. So it may well be that many asteroids are "dead" or dormant comets

Comets tend to have a very eccentric orbit coming close to the sun and then moving very far away from it, however many show more regular orbits.

In general we can say that a Comet is a large rocky/icy body that tends to vent gasses when near the sun, it can become inert and resemble an asteroid, which is a non venting rock or iron bollide. A meteor is the debris from a comet or asteroid that has fragmented and a meteorite is a meteor that has made it through the earhs atmosphere

That said if we take the classical view of what a comet is then how many are there ? Well we can only approximate since 1. we don't have the time or equipment to study them all and 2. Many are just too far away

The biggest concentration of comets is believed to be in the Oort cloud, a theoretical shell of comets some 50,000 AU ( AU = distance from the earth to the sun) from the sun. The Oort cloud may contain a TRILLION COMETS..depending on your definition of a trillion... that is 1x 10e12. It is estimated that many of these could be planet killers..over 300 KM in diameter

The other main collection of comets is in the Kuiper belt, a disc shaped region some 30-50 Au's from the sun, there is no real definitive calculation of how many comets are here but it is estimated that there are around 35,000 comets in the kuiper belt that are over 100 Km in diameter and maybe 100 million 20 KM objects. the comet that wiped out the dinosaurs was about 10 KM in diameter

Mars was killed by the sustained bombardment of thousands of large impactors ( asteroids or fragment of a comet that passed within it's Roche limit)

The Roche limit is an area around a planet whos size is dictated by the mass of the planet, rather like a black hole's event horizon. It acts as a sort of protection zone for the planet. Anything really massive like a comet which trangresses this zone will get pulled apart but the planets gravitational field. this fragmentation means that altough there may well be several extinction level impacts the planet as a whole should be able to survive the impacts

A classic example of the roche limit in action was the shoemaker-levy comet impacts on jupiter, during earlier passes the comet was torn apart into many smaller ( 2Km or so) fragments


Where do these comets come from ? It has been argued that they are made from matter that never made it into the main planets, others argue that the comets are the remamnets of an exploded planet or planets that collided.

A more interesting origin involves understanding how dynamic our solar system actual is. You see the sun orbits our galactic center ( and the galaxy orbits around within a cluster of galaxies)

Now differnet stars move at different speeds around the center of the galaxy, and stars pass through the spiral arms as they rotate ( the spiral arms are themselves dynamic) It takes about 250 million years for the sun to complete one orbit of the galactic center

At the same time the sun moves up and below the galactic plane in a cyclical fashion taking 120 million years to comple a single cycle

No one really knows what spiral arms are made of, it is thought that they are very dynamic and that the galactic core is constantly generating new ones and it is now thought that comets coalesce in the spiral arms, it takes about 50-100 million years for the sun to pass through a spiral arm and cou[led with the "up and down" cycles we think that the sun enters spiral arms every 30 milliom years or so

The sun also encounters Giant molecular clouds which can be inside spiral arms or outside them. these are star nurseries and also may contain many newly formed comets. In the suns lifetime it may have come close to a GMC on 50 occasions and possibly emtered some on 12 occasions

Whem the sun enters any of these comet rich areas it "grabs hold" of some comets which enter the oort cloud, others are knocked out of their orbits and spiral into the kuiper belt and there is a knock on effect which sends others into the inner solar system

This is a regular cycle of events with a 30 million year cycle modulated by another 250 million year cycle which can be directly linked to extinction events occuring on earth 94.5 million years ago, 65 million years ago and 36.9 million years ago. These can all be linked to massive earth impacts. We are due another extinction level event..now ..Unless of course it has occured..on mars

The K/T impactor which hit earth ( the one that "did for" the dinosaurs and around 90 % of all other living species, was as i said only 10 KM in diameter, but it impacted with a force equivalent to 1000 times all the nuclear weapons that exists on earth

But the three killer objects that hit mars were hellas ( about 100 KM diameter) Isidis ( 50Km diameter) and Argyre (36 Km Diameter). Most scientists do not connect these 3 but i am one of those who believe that these three, as well as many more smaller objects, impacted about the same time and were all part of one unimaginable catastrophe that decimated Mars in a few hours.


imagine what the 100 KM hellas impact on mars would do !! then imagine it's 50 and 36 KM companions and the countless other 1 KM impactors that hit around the same time..now perhaps you know why i am so nervous about starting the project... but wow what a movie it would make !!!

here is a topographical map of mars showing the blue hellas impact crater, the entire state of Alaska could be dropped into it


marstopo.jpg
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#2085 New Free Renderer For Cinema 4d

Posted by SFX on 20 April 2006 - 07:23 PM

Indigo is a free unbiased renderer for the major apps and now has a plugin for cinema 4d, i really don't know too much about it apart from the fact that is renders in a similar way to the maxwell renderer

Give it a try out and let us know what you think of it. I am not 100 % sure but i think the plugin only works with C4D 9.521 though the indigo program is itself a standalone application

http://homepages.par...amy/indigo.html
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#8804 Tutorial: Fluid Dimension - Josh Clos

Posted by danrealflow on 22 April 2015 - 04:03 AM

This tutorial takes you step-by-step through Josh's process in creating this awesome RealFlow fluid sim which won him the RealFlow / Cinema 4D Fluid Dimension Challenge in December 2014.
The challenge was to take a photograph, convert that photo into 3D geometry and then add a RealFlow fluid sim. 
This is what he did and how he did it!

 

 


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#8690 Wind Tunnel Turbulence Fd Tfd

Posted by SFX on 13 August 2014 - 08:10 AM

Posted Image


File Name: Wind Tunnel Turbulence FD TFD

File Submitter: SFX

File Submitted: 13 Aug 2014

File Category: Cinema 4D


This is a simple scene with a low poly car that is available in Cinema 4D content.

The main meat is of course the TFD settings. Note the high substeps needed with the high wind. I have rendered an example using lights but i have also set things up for GI rendering.

 

<iframe width="560" height="315" src="//www.youtube.com/embed/hViSYEf_cQA" frameborder="0" allowfullscreen></iframe>

 


Click here to download this file


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#8624 Wind Tunnel 1

Posted by SFX on 31 January 2014 - 02:50 AM



Click here to view the media
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