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- Newsgroups: comp.graphics.animation
- Path: sparky!uunet!gator!miles!sjm
- From: sjm@miles.com (Scott Mark)
- Subject: Re: Trouble with POV animation/texturing
- Message-ID: <1993Jan12.145700.9632@miles.com>
- Organization: Miles Inc., Diagnostics Division, Elkhart, IN
- References: <1993Jan9.183129.13662@miles.com> <1ispmoINNbh7@matt.ksu.ksu.edu>
- Date: Tue, 12 Jan 1993 14:57:00 GMT
- Lines: 85
-
- In article <1ispmoINNbh7@matt.ksu.ksu.edu> dudley@matt.ksu.ksu.edu (D U D L E Y) writes:
- >sjm@miles.com (Scott Mark) writes:
- >
- >>I have been thinking about doing animations with POV, but it seems that
- >>the texture I'm using (DMFWood4) shifts when I move my camera!
- >
- >From the documentation:
- >
- ># When animating objects with solid textures, the textures
- ># must move with the object, i.e. apply the same rotate or
- ># translate functions to the texture as to the object itself.
- ># This is now done automatically if the transformations are
- ># placed _after_ the texture block. Example:
-
- From the original posting: (No offense intended, but read what I _wrote_!)
-
- >I have been thinking about doing animations with POV, but it seems that
- >the texture I'm using (DMFWood4) shifts when I move my camera!
- ------
-
-
- I am not moving objects, before or after applying textures. For completeness
- I am including the scene file below. It is short. It doesn't take long
- to render with antialiasing turned off.
-
- When I render the following scene, I get some nice variation to the rings
- running diagonally from top-front-left of the box to bottom-front-right.
-
- If I move the camera to <1 7 -10> to get a closer look, the variation
- disappears! Just nice smooth concentric rings.
-
- I was under the impression that the textures were deterministic, unless
- there was the optional floating point value right after the keyword.
-
- -------------------------- cut here ---------------------------
-
- #include "colors.inc"
- #include "shapes.inc"
- #include "textures.inc"
-
- camera {
- /*
- location <1 7 -10>
- */
- location <1 15 -10>
- direction <0 0 1.5>
- up <0 1 0>
- right <1.33 0 0>
- look_at < 0 4 -4>
- }
-
- object {
- light_source {
- <1 15 -10>
- color White
- }
- }
-
- object {
- /*
- intersection {
- box { <-4 4 0> <4 10 5> translate <0 0 -4> }
- plane { <0 0 1> 0 rotate <0 45 0> }
- plane { <0 0 1> 0 rotate <0 -45 0> }
- } bounded_by {
- box { <-4 4 0> <4 10 5> translate <0 0 -4> }
- */
- box { < -4 -4 -4> < 4 4 4>
- } texture {
- DMFWood4
- } color White
- }
-
- /* one board's texture, fairly nice
- DMFWood4
- rotate < 94 0 0>
- translate <0 0 -4>
- rotate < 0 5 0>
- scale <4 1 1>
- */
-
- -------------------------- cut here ---------------------------
-
- Scott Mark
- sjm@miles.com
-