I used the same polygon in my last image and tried the textures wrinkles,
ripples, and waves and rendered it. I used the picture as a height feild.
It worked nicely(not realistic enough yet) but it looked like a t-shirt
shaped hill. Is there anyway to exclude the bottom portion? Would that be
CSG? Like the height field minus a plane or box? I've tried but can't get
the bottom part to disappear. Any suggestions?
Adam Ograbisz
AOg### [at] mhpgcom
On Fri, 17 Jul 1998 16:01:58 -0400, Adam Ograbisz <AOg### [at] mhpgcom> wrote:
>I used the same polygon in my last image and tried the textures wrinkles,>ripples, and waves and rendered it. I used the picture as a height feild.>It worked nicely(not realistic enough yet) but it looked like a t-shirt>shaped hill. Is there anyway to exclude the bottom portion? Would that be>CSG? Like the height field minus a plane or box? I've tried but can't get>the bottom part to disappear. Any suggestions?
Have you tried setting the water level?
Maybe you get the desired effect if you take the same height-field
twice, subtracting one from the other only with a little difference in
position. I try to illustrate this by a short piece of pov source code:
difference
height_field { gif "your_t-shirt_height_field.gif" }
height_field { gif "your_t-shirt_height_field.gif" translate -y*0.1
}
/* pigment etc. as needed */
/* scale, rotate and translate as needed */
}
The result will look somewhat like the following ascii art (view with
fixed-width font):
/\ /\ /\ /\
/##\ /##\ /##\ /##\
/#/\#\ /#/\#\ /#/\#\ /#/\#\
/#/ \#\/#/ \#\/#/ \#\/#/ \#\
#/ \##/ \##/ \##/ \#
/ \/ \/ \/ \
Hope that helps.
Roy
com