United3dArtists Archive

clintonman · Post by **clintonman** » 21 Feb 2020, 03:22

Experimental particle system based on mesh geometry. System is adapted from a 3dBuzz OpenGL class.
Uses the first uv channel to display the texture map and the second uv, u value is used to control the transparency over time.

The plan is to develop this for use in the 3DBuzz Maya Fundamentals 3rd project which has falling snow and an explosion.

Controls can be adjusted while the particle is running.
Saturation doesn't do anything.
WindX,Y,Z don't do anything.
Vortex is somewhat broken.
The particles don't turn to face the camera.
Spinning along the face normal is not implemented yet.

Next step is to look at other/real particle systems to see what can be adapted to this.

trueBlue · Post by **trueBlue** » 21 Feb 2020, 16:36

WOW!
This may be YOUR best trueSpace creation!

If you get an error about the emitter not being defined.
Just Reset the Current iteration attribute on the ActvLoop

v3rd3 · Post by **v3rd3** » 22 Feb 2020, 18:04

Wow ,,,, just Wow

trueBlue · Post by **trueBlue** » 22 Feb 2020, 18:37

It's Snowing in trueSpace

Can not really tell from the screen shot, but the cube is inside the particles.
So it is snowing in front and behind the particles.
The particles have a Billboard transform object connected to a Camera, so the particles always face the camera.
Way to cool!
Thanks Clinton!

clintonman · Post by **clintonman** » 22 Feb 2020, 19:20

trueBlue wrote: 22 Feb 2020, 18:37 It's Snowing in trueSpace
Can not really tell from the screen shot, but the cube is inside the particles.
So it is snowing in front and behind the particles.
The particles have a Billboard transform object connected to a Camera, so the particles always face the camera.
Way to cool!
Thanks Clinton!

You're welcome.
I think the billboard only works if the camera doesn't move. If the camera moves the whole particle system will rotate, not the individual particles.

trueBlue · Post by **trueBlue** » 22 Feb 2020, 19:29

Yep. As long as you navigate around the particle object, the individual particles face the camera.
But if you navigate to the top or bottom, the individual particles do not face the camera

I see in your code where you are rotating the angle x, y, & z
What if you used Degrees to Radicans
As an example from my Manipulator project

Code: Select all

	DEGTORAD = 0.01745329251994;
	rotdeg = Space.NodeMatrixElement(OBJ,'yaw');
	tmp = Space.NodeMatrixElement(OBJ,'ty');
	Space.NodeMatrixElement(OBJ,'ty') = tmp - 0.1 * Math.cos(DEGTORAD * rotdeg);
	tmp = Space.NodeMatrixElement(OBJ,'tx');
	Space.NodeMatrixElement(OBJ,'tx') = tmp - 0.1 * Math.sin(DEGTORAD * rotdeg);

There is a gimbal lock in, if I remember correctly, roll?

Or turn into a widget? That would combat the destructed behavior of right it, clicking and entering into Point Editing

trueBlue · Post by **trueBlue** » 24 Feb 2020, 15:59

Got a random particle flare effect with Bloom Intensity set at 50.000
ColorKey set @ 233 233 233

trueBlue · Post by **trueBlue** » 26 Feb 2020, 01:59

So how is one able to animate your Workspace Particles?

clintonman · Post by **clintonman** » 26 Feb 2020, 02:04

trueBlue wrote: 26 Feb 2020, 01:59 So how is one able to animate your Workspace Particles?

"Experimental particle system"
You're on your own until it gets at least a little bit out of the experimental stage.

trueBlue · Post by **trueBlue** » 27 Feb 2020, 01:22

Here is what I have come up with for animating your awesome Particle System.

System
Start - Stop - Reset

Animation
time = Animation Time
Animate / System = Preview Animation
Render / System = D3D Render to File

Note: This is a different version of your original object. 'Leaves fall down from above'
I also have a version that has the Leaves face up.
If you are okay with this, I would like to include a Particle System library in the unofficial update.

Particle System - Author Clinton Reese
Particle System Up.RsObj
Particle System Down.RsObj
Particle System Face Up.RsObj

clintonman · Post by **clintonman** » 27 Feb 2020, 02:41

Feel free.

clintonman · Post by **clintonman** » 06 Apr 2020, 22:42

Image shows each of the particles turning to face the camera.

Converted to what I call a "Reactive" particle system, using a script object instead of a command script. The script reacts to changes from outside the script, where command scripts are run directly. In this case the script is basically reacting to changes in the time line. Being reactive makes it much easier to render.
Also changed to a world coordinate system which will make it easier/possible for the particles to originate from objects in the scene and be able to move independently of those objects.

trueBlue · Post by **trueBlue** » 11 Apr 2020, 00:12

Sounds like your Particle System is getting some awesome upgrades!
Salivating

Noticed something and not sure what is going on.
I added a modified Sequence Image Player to your Particle System's Material to see if I could get an animated material working. It works but the images are showing Backwards or Mirrored and upside down.
The included Sequence Image Player has an Animation aspect with a Time attribute that can be Keyframed.
You would need to create and load 40 images.
Can you take a peak at this?

I created a simple 40 frame animation (not included) of a Cube traveling from the left of the screen to the right.
With the Animation playing while running the Particles System, you can see the images playing Backwards.

clintonman · Post by **clintonman** » 11 Apr 2020, 03:32

trueBlue wrote: 11 Apr 2020, 00:12 .... It works but the images are showing Backwards or Mirrored and upside down.
...

Try reversing the UV mapping with negative values.

trueBlue · Post by **trueBlue** » 11 Apr 2020, 13:18

That corrects it. Thanks.

clintonman · Post by **clintonman** » 14 Apr 2020, 00:51

image shows UV based flip book animation material

Final update before cleanup and release.
Fixed the horrible trueSpace crash bug
Emit from vertices or face in order or randomly.
Enable or disable ground collision checkbox
flipbook animation material
inherit velocity - particle initial speed can match the emitter motion

Side note for trueBlue - I changed the UVs for the cards because they were upside down, so this would undo the scale UV by -1 advice from before.

trueBlue · Post by **trueBlue** » 14 Apr 2020, 02:07

Awesome!
Is this something that would be useful for your flip book images?
Glen Gordon made this Contact Sheet Generator

clintonman · Post by **clintonman** » 14 Apr 2020, 02:32

trueBlue wrote: 14 Apr 2020, 02:07 Awesome!
Is this something that would be useful for your flip book images?
Glen Gordon made this Contact Sheet Generator
Contact Sheet Generator.png

Could be, as a tool that's run to generate the flip book image used in the material. The particle system is limited to square image, #rows = #columns.

clintonman · Post by **clintonman** » 14 Apr 2020, 19:18

left side is reading the Color_shader black value, ignoring the Constant_shader values
trueSpace BUG

This really caused me a lot of trouble. The ConstantTexture node's InputBitmap node has it's usage set to "DIFFUSEMAP". It usually works but when I tried to use it with the flip book constant texture it failed and only read the Color_shader value. Changing the usage to "CONSTANTMAP" fixed the problem.

trueBlue · Post by **trueBlue** » 14 Apr 2020, 20:42

Is this something I should update or add to in the Updates?
C:\trueSpace761\tS\Rs Main Libraries\Shaders - Constant Shaders
ConstantTexture.RsObj
How do you find the solution by changing it to CONSTANTMAP?

clintonman · Post by **clintonman** » 14 Apr 2020, 21:46

trueBlue wrote: 14 Apr 2020, 20:42 Is this something I should update or add to in the Updates?
C:\trueSpace761\tS\Rs Main Libraries\Shaders - Constant Shaders
ConstantTexture.RsObj
How do you find the solution by changing it to CONSTANTMAP?

Yes, I think so.

I found the solution by wild guess. When I tried to make one node containing both the alpha and constant shaders it failed. It was using one bitmap set to "DIFFUSEMAP". I separated into an alpha and constant node and still had trouble til I noticed the unofficial update bitmap had "ALPHAMAP" for it's usage. After that the alpha started working properly and I made the guess of setting the usage for the constant to "CONSTANTMAP" and that solved the last problem. This was several hours of frustration and crashes

. I'm glad it's over, now I can get back to finishing this thing.
I think the alpha just needed to be blank for it's usage to work, but I believe I added the ALPHAMAP usage so the Collada export could see it properly or maybe it was my modified collada export made use of it. The TextureAlpha shader from Caligari has a blank usage.

One more bug I found is that the Saturate node in the Components - Operators library doesn't load. It just errors out. No way to fix that one though.

clintonman · Post by **clintonman** » 14 Apr 2020, 22:30

I just loaded that scene onto a different computer and the problem constant shader with the DIFFUSEMAP usage setting works. Maybe the problem is associated with whatever graphics card is installed. I'm going to double check on the original computer.

Verified, it looks good on the original computer too. So you may want to not change it in the Unofficial Updates. I'm still going to keep the "CONSTANTMAP" usage just in case.

trueBlue · Post by **trueBlue** » 14 Apr 2020, 23:24

Okie Dokie, I'll leave the ConstantTexture as is.
On another note, with the D3D Sequence Material I created, I had to change the DefaultTexCoordShader's TCScaleX and TCScaleY attributes to -1 too. It had the same problem when applied to an unmodified Primitive Plane.
I also tested changing the ConstantTexture's Input Use to CONSTANTMAP which works too.

Maybe the problem has to do with the image format. I have only tested DDS and PNG

trueBlue · Post by **trueBlue** » 17 Apr 2020, 23:36

With your new Workspace Particle System scenes.
Something seems amiss with Alpha on the Planes.

You an use the InputBitmap nodes to share images.

clintonman · Post by **clintonman** » 18 Apr 2020, 01:29

trueBlue wrote: 17 Apr 2020, 23:36 With your new Workspace Particle System scenes.
Something seems amiss with Alpha on the Planes.
TextureAlpha.png
You an use the InputBitmap nodes to share images.

Oops, missed it on that one, thanks.

Edit: Uploaded the fixed scene file

Edit: Uploaded smoke scene fix as mentioned in PM

trueBlue · Post by **trueBlue** » 28 Apr 2020, 12:58

clintonman wrote: 14 Apr 2020, 21:46
trueBlue wrote: 14 Apr 2020, 20:42 Is this something I should update or add to in the Updates?
C:\trueSpace761\tS\Rs Main Libraries\Shaders - Constant Shaders
ConstantTexture.RsObj
How do you find the solution by changing it to CONSTANTMAP?
Yes, I think so.

I found the solution by wild guess. When I tried to make one node containing both the alpha and constant shaders it failed. It was using one bitmap set to "DIFFUSEMAP". I separated into an alpha and constant node and still had trouble til I noticed the unofficial update bitmap had "ALPHAMAP" for it's usage. After that the alpha started working properly and I made the guess of setting the usage for the constant to "CONSTANTMAP" and that solved the last problem. This was several hours of frustration and crashes . I'm glad it's over, now I can get back to finishing this thing.
I think the alpha just needed to be blank for it's usage to work, but I believe I added the ALPHAMAP usage so the Collada export could see it properly or maybe it was my modified collada export made use of it. The TextureAlpha shader from Caligari has a blank usage.

One more bug I found is that the Saturate node in the Components - Operators library doesn't load. It just errors out. No way to fix that one though.

I found a Saturate.RsObj in the AlphaBlendShader.

Wondering if this could be used in your FlipBooks to get the Alpha, Fade In, Fade Out to work?
The BacteriaAlpha uses the Normal and EyeDir attributes in the Shader Input.
There is also the TextureBumpTransparency compiled material that might be useful.
https://docs.microsoft.com/en-us/window ... a-blending

clintonman · Post by **clintonman** » 28 Apr 2020, 15:10

You found a fix for the saturate node.

trueBlue · Post by **trueBlue** » 03 May 2020, 15:28

Looks like the Flip Books are not compatible with Vray

: Vray.png (31.46 KiB) Viewed 4895 times

clintonman · Post by **clintonman** » 03 May 2020, 15:37

trueBlue wrote: 03 May 2020, 15:28 Looks like the Flip Books are not compatible with Vray
Vray.png

Nope, it uses custom D3D materials and vray isn't customizable like that.

United3dArtists Archive

Workspace Particles

Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles

Re: Workspace Particles