#Combo mapping
11 messages in this thread
I tried to stick a b/w logo onto a pane of glass using filter mapping
for a "frosted glass" effect. Unfortunately, I can't get it to work. The
logo is black letters on a white background, in order to have the
background totally transparent. This works well, maintaining the glass'
attributes. (It's slightly opaque) However, I can't get the letters to come
out white! I even tried adding a color map, with the reversed image (white
letters on black), to no avail. The letters come out dark grey, which is
probably black lightened by my Globals ambient light of 75,75,75.
So, how can I get white letters? Also, in Map Master, Louis Markoya says
you can't combine maps except by using Altitude along with one of the other
three. Is this true? I was hoping to use Filter and Color to add some color
elements to a Filter map, or some other similar combination.
Blaq! – via Whap!
I think Louis Markoya said that it made no *sense* to combine maps other
than with altitude. (or something close, anyway)
I remember disagreeing with that when I read it too. I see his point, that
usign a filter will dilute a color map, or using other combinations will
dilute each one's effect. But I can still see a lot of use for it. I
haven't experimented with it yet, though (combining other than with
altitude). Maybe they do something funny to one another, cancelling or
crudding up the image? Don't know. Let me know if you experiement first
and find out, ok?
Re your 'frosted glass' problem. What color is the object that you have
the filter map on? It should be bright white, right? (so that the opaque
sections of the filter map show white). I wouldn't think you would need
any color map in addition….
–jp–seattle–
John,
my glass plate has a color of 200,200,235 which is fairly light. I have
no idea why the letters show up dark grey.
Blaq! – via Whap!
If you really insist on doing this…you can just transparency map the
thing. Or…if you really want to make it easier…use actual objects for
your letters on the glass….simple Louis
Louis,
but I _am_ transparency-mapping the letters! That's the point. The white
background on my logo picture maps out to full transparency, and the black
letters map as full opacity — but the letters come out black (their color
in the map image) rather than almost white (the color of the object on
which the map is being applied)
Blaq! – via Whap!
Are you only transparency (filter) mapping, or doing it with color mapping?
If you are transparency mapping alone the color should be from the object.
BUt if you color mapped, of course the letters should be black. Sounds like
you're asking for trouble anyway with white letters on a clear BG
Louis,
I'm _transparency_ mapping. I want a "frosted glass" effect, so I need
the white letters on a clear background.
Blaq! – via Whap!
You are right to say they will probably "crud up" the effects John. One
will usually cancel the other out…take forinstance the color/filter
combo..the color map will take presedence and there will be no filter
evident. Same with reflect…color takes presidence and no reflections…go
ahead and try. 🙂 Louis
Out of curiosity, what about if you set the 'color' map as only 100 on the
'full-scale value' parameter? And set the 'filter' map as 155 value on the
'full-scale value' parmeter? (applied to the same object, of course)
Would that still make color take precedence? or would they be applied in
porportion to the 'full-scale value' parameter?
Not my burning question for the day, but I'll check it out and let you
know. Nothing to lose but an hour or so 🙂
–jp–seattle–
Full scale value is supposed to work only with Filter….in my versions it
does not work at all. Louis
I ment only for the same pic…filter and color combined on the same pic
just wouldn't get you much…of course it can be done, as other combo's but
the results probably won't be what you expect. Louis