home *** CD-ROM | disk | FTP | other *** search
- At 08:19 PM 1/24/96 -0500, you wrote:
-
- >I want to make concentric circles radiating from a point, like circular radio
- >waves. They would be moving outwards continually. Just black on white
- >circles, nothing fancy.
- >
- >Is this another cone-flattening trick?
-
- Could be, or you could also use morphing. However I think the easier way
- would be the cone flattening method.
-
- First, make a long thin image map of one black/white stripe combo, like this:
-
- --------------------------------------------------
- | Black stripe |
- +------------------------------------------------+
- | White stripe |
- --------------------------------------------------
-
- If you want one of the stripe colors to be larger, go ahead and make your
- image map that way. Save it as a 2-color image, then go into modeler and
- make a tall-thin cone. The more sides you specify for the cone, the
- smoother your circle edges will be. Kill the bottom polygon of the cone,
- give the rest a surface name of your choosing, save it, and move into Layout.
-
- Load the cone, then load the image map of your B/W stripes. For surfacing,
- map the image either as a color map, or as a luminosity map if you don't
- want your B/W circles to be affected by lights. Either way, select the
- Cylindrical Map option, and the Y axis for mapping around. Select Automatic
- Sizing to begin with, which will set the size so your B/W image maps *once*
- vertically. Then select Texture Size, and divide the Y value by the number
- of concentric circles you want to have. For example, if you want 5 B/W
- stripe pairs, divide the existing Y value by 5. To make the circles expand,
- set the Y velocity to a negative number (you'll have to experiment with this
- to get the speed you want). Then all that's left is to exit the Surface
- panels, change the Y size your object to 0 and the X size to some large
- number (this will also take some experimenting). Animate it, and you should
- have expanding concentric circles.
-
- As an alternative, you could make the surface color solid and use your image
- as a cylindrical Clip Map. It could be used for ANY map, really: Bump,
- Transparency, Reflection, Specularity, etc.
-
- Wave on...
-
- ---< Justin Barrett - Free Spirit Productions >---
-
-