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Author Topic: invisible window frame  (Read 3661 times)

ADSohr

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invisible window frame
« on: December 24, 2009, 05:44:14 am »

Hey all,

currently in my project it seems that the window frame blends right into the wall. but in real life i can see the windowsill easily. the geometry is all there but it just blends in. does anyone have any ideas on how to make it stand out better?


you can see the windowsill best where the desk ends on the left.


thanks ahead of time.
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ENSONIQ5

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Re: invisible window frame
« Reply #1 on: December 24, 2009, 07:32:21 am »

Hey, nice work ADSohr, really nice details.  There are two ways you can go with this sort of problem:

1) TOTAL REALISM.  It seems the window frame and wall are painted with the identical material.  In real world situations like this, we see relief detail by the way light interacts with the detail.  The best way to simulate this is with Ambient Occlusion, available as an ART attribute in Scene mode.  This will create a soft shadow around the edge of the frame, since those areas are blocked from exposure to all available ambient light.  The deeper the corner, the creater the shadow.  Note that it does slow down render times rather a lot.  (It might also be best to create an AO render separately using the 'clay' settings in the documentation and merge this with the 'beauty render' above.  This technique has certainly yielded remarkable results for many Anim8ors, in particular for $imon).

2) CHEAT A BIT.  You could try moving the light sources to create a bit of shadow around the frame, or create a new material for the frame to generate a bit of contrast.  The new material doesn't have to be a different colour, but if the specular, rough or bump setting are different it should create enough difference to make the frame visible.  In most cases I have seen, window and door frames are generally glossier than walls and ceilings, so it would not look out of place, even though this might not be the case in the room upon which this is modelled.
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Pincho

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Re: invisible window frame
« Reply #2 on: December 24, 2009, 05:44:13 pm »

Why would the window frame have a speckled texture anyway? It should be plain.
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ADSohr

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Re: invisible window frame
« Reply #3 on: December 24, 2009, 06:20:21 pm »

i am currently in the room modeled sitting at the desk. looking at it now i find that cheating with the geometry could help significantly. one thing i notice on the real world counterpart, there is a darker corner around the whole thing that seems to be produced by a small bevel, i could replicate that to give some contrast between the wall and frame. the windowframe does have a slightly higher specular value as you said, and many small corners that make shadows. i guess being cheap is costly huh? i didn't want to make too many colors that are almost the same, or too many vertices.

thanks for the help and compliment


Pincho, looking at this frame in a bright light does reveal that the paint is not even over the whole thing, probably caused by the painter and the paintbrush not having uniform pressure during the stroke. also different bristles might have been stronger and made a deeper ridge than the softer bristles around them. flecks of dried paint make bumps in the paint. old age can cause peeling or bubbles.
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ADSohr

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Re: invisible window frame
« Reply #4 on: December 25, 2009, 06:03:20 pm »

i finished the changes to to the window frame

looks much better.




Merry Christmas!
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Pincho

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Re: invisible window frame
« Reply #5 on: December 25, 2009, 08:38:59 pm »

Pincho, looking at this frame in a bright light does reveal that the paint is not even over the whole thing, probably caused by the painter and the paintbrush not having uniform pressure during the stroke. also different bristles might have been stronger and made a deeper ridge than the softer bristles around them. flecks of dried paint make bumps in the paint. old age can cause peeling or bubbles.

I'm sorry, but looking in a bright light at brush strokes is not what you have represented in your image. You have represented an entire two tone stipple effect over the whole room, including the laptop. The carpet looks like plaster of Paris.
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ADSohr

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Re: invisible window frame
« Reply #6 on: December 26, 2009, 05:37:43 am »

Quote
I'm sorry, but looking in a bright light at brush strokes is not what you have represented in your image. You have represented an entire two tone stipple effect over the whole room, including the laptop.


i need to make the Anti-Aliasing a big higher? it's at 81 now.

also i don't feel like making a specular map.


Quote
The carpet looks like plaster of Paris.


it does doesn't it?  :D i'd never thought of it that way.

thats my wimpy lighting in the real room, the camera couldn't get an even enough picture to use as a hight map. so i made do with what i could. i could UV map the texture smaller but there would be obvious tiling, i figured the big bumps looked better than stripes.


one more question. how would i fix that bright line on the corners of the room? if possible i just want to tone it down. it is unintentional

update
i fixed the floor, it looks more like carpet now.

i'm doing a render at 100 AA that looks a bit better
« Last Edit: December 26, 2009, 06:15:11 am by ADSohr »
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ADSohr

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Re: invisible window frame
« Reply #7 on: December 30, 2009, 05:20:10 am »

one more question, how would i fix that bright line on the corners of the room? if possible i just want to tone it down though. the line is unintentional but if i could make it less bright that would be great.
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