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Dark GDK / Idea...

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Jna99
18
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Joined: 3rd Nov 2005
Location: Portugal
Posted: 31st May 2007 00:10
Hi people does anyone has any idea how to create an effect like this :

http://forum.thegamecreators.com/?m=forum_view&b=8&t=68745&p=0

Morcilla
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Location: Spain
Posted: 31st May 2007 11:14
I like that effect, lol.
It is made with four objects, one for the sea (with high
specularity) another for the land (low specularity), one for the
halo and the last one for the atmosphere.

Nevertheless, I would like to hear (from other people than me)
alternative methods to achieve the sea/land specular looking.
Jna99
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Posted: 31st May 2007 15:40 Edited at: 31st May 2007 18:36
Morcilla did you use bump mapping too?

EDIT: Did you use any mapping technique or shader?

Agent Dink
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Posted: 31st May 2007 19:45
That actually sorta looks bad. It makes earth look like glass or marble or something.

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Silver Dawn
IanM
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Posted: 31st May 2007 21:28
Actually, it looks pretty accurate: http://nssdc.gsfc.nasa.gov/image/planetary/earth/apollo17_earth.jpg

A little more cloud and a little less halo and it'd look even better.

Jna99
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Posted: 31st May 2007 22:16 Edited at: 31st May 2007 23:51
I prefer the marble look...this is what I've made so far the texture is below...now I need to find the atmosphere texture!



EDIT: Found in the forum a normal map generator

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Agent Dink
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Posted: 1st Jun 2007 08:35
IanM, I'm talking about the bright shiny specularity on the Earth. I have never seen a picture of Earth that looked like that. The picture you posted doesnt have it either.

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Silver Dawn
Morcilla
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Posted: 1st Jun 2007 11:44
Well, there are opinions for every taste.
Perhaps I exaggerated the specularity of the sea a little bit.

I guess some people won't like the 'caribbean' version either:

http://www.thegamecreators.com/?m=gallery_view&i=242&p=1

I didn't use any effects, bumpmap or shader.
I think sea specularity can be achieved in a better way using normal maps, but it needs a shader, and I had some problems with it.
So I decided to go the safe way and I used the object properties. That will work on any graphic card.
(Also due to lack of time to cover every possibility.)

The caribbean version uses blend mapping.
Jna99
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Posted: 1st Jun 2007 20:12 Edited at: 2nd Jun 2007 03:20
People I need to have an "halo" surrounding the planet, I'm using a texture but when the camera zooms the halo disappears any other idea how to make halos?


EDIT: This is what I have so far
EDIT2: Would like something like this halo http://www.gamekult.com/images/ME0000246677/

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tha_rami
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Posted: 2nd Jun 2007 11:17
I think that reflection is kindá accurate - it's not so strong usually, and far more 'blurred out' but it's definitely possible that a planet has such reflection on it's water.

That 'halo' is named atmosphere, basically. You need an atmosphere. I don't know if you can add glow maps or something, or you could texture a plain, calculate the distance to the viewport, rotate it towards the viewport and scale it correctly.

Jna99
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Posted: 3rd Jun 2007 02:15 Edited at: 3rd Jun 2007 02:22
tha_rami thats the idea that I implemented but, when the light is not iluminating a certain part of the planet, the halo still appears and it looks bad...

Look at the image and see what I want...

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Clackersmith
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Posted: 3rd Jun 2007 17:49 Edited at: 3rd Jun 2007 18:10
Quote: "I'm using a texture but when the camera zooms the halo disappears any other idea how to make halos?"


Just a Dark Basic Pro post I started back in March. I'm not sure if the idea’s discussed there will be of any use to you seeing as I know absolutely nothing about darkGUI. Hopefully it will set you in the right direction.

http://forum.thegamecreators.com/?m=forum_view&t=101467&b=1

The inadequacies of human cognitive ability are cause for the imperfection of reality.
Jna99
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Posted: 3rd Jun 2007 18:52 Edited at: 3rd Jun 2007 18:55
Clackersmith actually the tecnhique that I'm now using is based on yours lol(but turn off on the images that I've posted)...but I'm looking for a way of doing this http://www.gamekult.com/images/ME0000246677/! As you can see near the ship, there's a blurred atmosphere against opposite side where there's no visible atmosphere at all!

Jna99
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Posted: 4th Jun 2007 02:43
Morcilla
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Posted: 4th Jun 2007 12:50
Jna, I've replied your mail.
Ok, just use your imagination, if you want to see it only at one side of the planet, just displace the object in the desired direction, instead of postitioning it always at the same position that the planet has.
Miguel Melo
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Posted: 6th Jun 2007 01:21
Only on this Forum will you ever see a Spaniard helping a Portuguese... it brings a tear to my weary eyes.

Just kidding guys - couldn't resist the cheap joke. Keep up the good work Jna99 and Morcilla.

I have vague plans for World Domination
Jna99
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Posted: 6th Jun 2007 02:42
lol

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