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Create Textures with Images or Drawings in Particle Engine

Posted: Thu, 22nd Nov 2007, 6:09pm

Post 1 of 11

Skatingecko

Force: 20 | Joined: 19th Oct 2007 | Posts: 14

Member

Rating: +2

Hey, maybe a lot of people are wonderning, "how do I create my own Texture?" Well you can do 2 things, edit an image to a texture or just draw your own. Heres how:

i found a program with alpha transparency, grayscale, and png(3 main things you need to make a texture)- try www.gimp.org, its free and it works great for Windows, Mac, and even Linux.

Yea, i just played around with GIMP, its excellent

to make a texture with it:

(1)to make your own image a texture:

1. select an image(from my pictures...etc.)-->right-click-->"Edit with GIMP"(cannot be bmp, anything else like jpg will be fine)
2.right-click(on image)-->image-->mode-->"Grayscale"
3.right-click(on image)-->Layer-->transparency-->"Add Alpha Channel"
4.right-click(||)-->file-->save as-->(type filename)-->choose save folder-->click "select file type(extention)", and scroll down to PNG.

the image is now available as a texture.
Note: you dont always have to right click on the image, its in the menu toolbar at the top.

(2)to draw your own texture:

1.Open GIMP

2.File-->New-->choose pixel dimensions-512x512p or 256x256
3.click Advanced Options-->Color Space-->Grayscale
4.Fill with-->Transparency
5.(optional)put in a comment

6.click the GIMP main window(not the drawing window, the actual program)-->select a tool-->(preferably brush or airbrush for drawing)

7.in bottom half of window, next to "Brush:" click the mini-image and choose a brush stroke

8.open your Canvas window

9.click the main GIMP window(one with all the tools on it) and below the tools there are two colored squares. click one and change to the color you like, you will paint that color(this only works on RGB mode, for general drawing, but to create a texure, i generally suggest you dont use this step)

then save it, following step 4 (top)

you have created a drawn texture

Tip: when drawing a texture, be sure not to draw close to the edges or else your texture will look like a bunch of squares, so keep it far from the edges

Note: on step 9, you only need to color it to see the path of your brush stroke. because when you import the texture into Effects/VisionLab, it will be gray, the color of the texture will change only if you change it in the particle color picker.

also, I have never actually taken a REAL pic with a camera and done the same thing, i just use some images off of google, but im sure the same steps apply to actual images YOU take

I hope you like the program and the little mini-tutorial i just typed biggrin
Thanks
Skatingecko
Posted: Fri, 23rd Nov 2007, 6:00am

Post 2 of 11

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

I'm sure there will be a number of users who will find this tutorial very helpful. You might need to do a bit more than just "Add Alpha Channel to get proper alpha transparency though; have you used textures you made like this to confirm that it works? Typically in PhotoShop, I create an empty image file with transparent background, then draw in the texture. If you save it as a .png the transparency in the background is automatically saved as alpha information.

Also, technically the file doesn't have to be in grayscale mode; it could even have colors in it, but the value is all that the particle generator works with, so if you paint the texture in grays, you get the most accurate representation of how it will display.

If you want to have a go at creating some from your own photos, check out this tutorial.d I wrote in in PhotoShop, but GIMP has the same tools, for the most part, so the process should be similar. I realize the images are down currently, I'll see if I can find them and move them to another server so they show.

Thanks again for the time and effort you put into preparing this tutorial. I'm sure many will put it to good use.
Posted: Tue, 27th Nov 2007, 12:45am

Post 3 of 11

Skatingecko

Force: 20 | Joined: 19th Oct 2007 | Posts: 14

Member

Thanks Axeman, I appreciate the comment. And yes, I have made my own particles using this method, many times in fact. They work fine, and the Alpha thing I do works. I will look at your tutorial and see it. So to all those who read it, check out BOTH of the tutorials-Axeman's and mine. Mine is a good solution if you don't have Photoshop, like me.

-Skatingecko

P.S.- The particles i make are sucky, im not a very good artist. Im sure u guys can do better. And sorry about the missing picture, but it didn't matter much, it just showed me drawing.

Last edited Tue, 27th Nov 2007, 9:46pm; edited 1 times in total.

Posted: Tue, 27th Nov 2007, 1:18am

Post 4 of 11

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

Awesome, glad to hear that this is working for you. Unfortunately, it looks like the images I used on that other tutorial might be gone for good, so I'll have to create some more, and I'm not sure when I'll be able to do that.
Posted: Tue, 27th Nov 2007, 9:43pm

Post 5 of 11

Skatingecko

Force: 20 | Joined: 19th Oct 2007 | Posts: 14

Member

Thanks, I was just frustsrated I couldn't create my own textures because I didn't have Paint Shop Pro or Photoshop. Although I'm interested: There is a particle preset that is like a desert dust thing, it's in the neon light tutorial video, notice it around the ankles of the actors. It's a particle, brown/desert wisp or something, it's cool. I think it's made by Tarn. How do you think he made it? maybe i should just ask him myself...
Posted: Tue, 27th Nov 2007, 10:49pm

Post 6 of 11

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

Tarn's dust storm is pretty simple, really. He just used two of the default textures, smoke_1 and smoke_2. The actual texture files were made by schwar, I think, though I could be wrong on that. Might've been malone. Anyway, were you wondering how they made the actual dust preset, or the textures that it uses?
Posted: Sat, 1st Dec 2007, 1:00am

Post 7 of 11

Skatingecko

Force: 20 | Joined: 19th Oct 2007 | Posts: 14

Member

The texture, I more on that.
Posted: Sat, 1st Dec 2007, 7:31am

Post 8 of 11

Axeman

Force: 17995 | Joined: 20th Jan 2002 | Posts: 6124

VisionLab User VideoWrap User PhotoKey 5 Pro User MuzzlePlug User PowerPlug User PhotoKey 3 Plug-in User FXhome Movie Maker FXpreset Maker MacOS User

SuperUser

They started with a blank canvas, with a transparent background, and then used a soft paintbrush to draw in some texture. Its pretty much as simple as that, unless you are asking something else that I'm not understanding.
Posted: Sat, 1st Dec 2007, 4:10pm

Post 9 of 11

Skatingecko

Force: 20 | Joined: 19th Oct 2007 | Posts: 14

Member

Yea, That's fair enough. I'm caught on something else: I'm trying to rotoscope a 4point shape to a short stop motion video I made. I make a keyframe like in the tut: I leave a 2frame gap between keyframes. But since VisionLab automatically tweens between keyframes, the neon light aligns with the keyframe AFTER the one I'm working on, while the toy lightsaber is in the same spot. Any suggestions? And don't say put a keyframe every frame, I already tried that. Here's the GIF:

As you can see, the saber stays still alot, that may be a problem.
Posted: Sat, 1st Dec 2007, 4:14pm

Post 10 of 11

SilverDragon7

Force: 2265 | Joined: 29th Jun 2006 | Posts: 1990

VisionLab User VideoWrap User FXhome Movie Maker Windows User

Gold Member

Every Frame? That's how it's generally done in VisionLab.
Posted: Sat, 1st Dec 2007, 5:12pm

Post 11 of 11

Skatingecko

Force: 20 | Joined: 19th Oct 2007 | Posts: 14

Member

yea but I preview render it after EVERY KEYFRAME, then it still disaligns. It makes me mad...lol twisted