I give up on reflections...

I give up on reflections...

Post by John Do » Fri, 03 Oct 2003 09:17:36


I give up !!



I'm new to Maya, so that might be why I can't figure out how to do simple
tasks ! So maybe that one of you wise guys out there can help me out ?



All I want to do is create a sphere over a plane, and make them both reflect
each other. I've been through all the documentation and read a lot about
True reflections and simulated reflections. Also I've been looking at
specular reflections - but no mater what - I can't make it happen.



Can one of you walk me through this ? A step by step instruction will be
needed - ALL details included.



I think if I just get the basics, I'll be able to figure out the rest to get
the result I'm aiming at.



Any help will be appreciated.



Kind regards
 
 
 

I give up on reflections...

Post by Theo » Fri, 03 Oct 2003 09:58:13

"John Doe" < XXXX@XXXXX.COM > wrote in



First of all, the shader used must have the reflection attribute set to
something other than zero. Then, raytracing must be turned on in your
render globals. Thats it for simple reflections.

 
 
 

I give up on reflections...

Post by Sal » Fri, 03 Oct 2003 15:12:43

I think you were looking for something a bit more pedantic, although
Theo's suggestion was right on. First of all, do you know how to assign
materials to your objects (the sphere and ball in this case)? You need
to assign a reflective material to your objects in order to make them
reflective. The phong material should work as an example:

Go to Windows|Rendering Editors|Hypershade.
A window will appear. In the bottom (empty) workspace of the hypershade
window, RMB and a menu will appear, select Create|Materials|Phong
A box with a grey sphere should appear in the window. MMB drag and drop
the sphere "phong" icon onto each object in your scene that you want to
make "reflective". Now you've assigned the phong material (shader) to
your objects. Then you need to go into Render Globals|Raytracing Quality
- check "Raytracing" (in Maya Software Render if you're using 5.0). Now
render and you should see some reflections. You might try getting an
intro to Maya book as Maya can be daunting to beginners. Alias actually
has some pretty good ones. Check their website. Hope this helps.
 
 
 

I give up on reflections...

Post by John Do » Fri, 03 Oct 2003 23:23:58

i again

Thanks for your input - but - it didn't quite do what I am looking for.
My be that I am not to good at explaining what I'm trying to do, but here
comes another way of asking :-)

I want to make a plan that lies just above the horisontal line. Also I want
to make a sphere that flows just a little above the plane.
How can I make the plane reflect the sphere, and the sphere reflect the
plane ? Sort of like if both objects where mirroring each other.

In Maya - if you press F1 to get help, and in there select "About" for the
search area, and you type in "Specular highlight" as search criteria, you
will get 19 hits. If you select hit no. 1 - with the title "Specular
highlight (shine) in Maya", you will se what I am looking for. Scroll to the
bottom of the page under the section "Reflections" Here you can see 2 images
of 3 spheres being reflected in a plane. That's exactly what I am trying to
do !

Here is what I've been doing - perhaps you can tell me what more I need to
do ?
I start a new scene.
I select: Create - Polygon primitives - Plane. (width = 24 and height = 24).
I select: Create - Polygon primitives - Sphere (radius = 2)
I change the Translate Y value to 3.5 for the Sphere and 1.0 for the plane.
I right-click the plane and selects: Materials - Assign New Material -
Phong.
In Common Material Attributes I change the color to a green shade.
In Specular Shading I change the Cosine Power to 2, and Reflectivity to 1.
I right-click the sphere and selects: Materials - Assign New Material -
Phong.
In Common Material Attributes I change the color to a red shade.
In Specular Shading I change the Cosine Power to 2, and Reflectivity to 1.
I go into IPR and start to render the image, but this will not produce what
I am looking for.
I right-click the rendered image and selects: Options - Render Globals...
In the Render Global Settings I change resolution to 640x480 on the Common
tab page. On the tab page Maya Software, I change Quality to Production
Quality, and In Raytracing Quality I enable Raytracing.

Well - this is where I am right now, and this is not what I was going for.
The rendered image shows a sphere that does reflect the light source but NOT
the plane. The plane has the exact same color all over the surface. It does
not seam as if the plane is reflecting anything at all. The plane seams to
be absorbing all the light without reflecting any light.

Hope this helps to understand what I am trying to do.

Kind regards


"Sal" < XXXX@XXXXX.COM > skrev i en meddelelse
news: XXXX@XXXXX.COM ...
simple
reflect
get


 
 
 

I give up on reflections...

Post by Michael Ho » Sat, 04 Oct 2003 01:25:05

John Doe schrieb folgendes:


IPR doesn't render raytracing. Use "Render current frame".

Greetings, Michael.
 
 
 

I give up on reflections...

Post by Theo » Sat, 04 Oct 2003 02:47:21

"John Doe" < XXXX@XXXXX.COM > wrote in



also, if you want to relect light from the light source (point light,
spotlight, etc) "onto" other objects then you need to also use
"refraction". This is not the same as simple reflection, but using
reflective objects to bend light rays.
 
 
 

I give up on reflections...

Post by John Do » Sat, 04 Oct 2003 06:17:59

Thanks a zillion billion !!

If you only knew the amount of time I've been trying to do reflections - and
all the time I've only been a few pixels away from pressing the right icon
:-)

Again - thanks for all your input. You guys rule !!

Kind regards

"Theo" < XXXX@XXXXX.COM > skrev i en meddelelse