/[gzz]/gzz/Documentation/Manuscripts/Irregu/irregu.tex
ViewVC logotype

Diff of /gzz/Documentation/Manuscripts/Irregu/irregu.tex

Parent Directory Parent Directory | Revision Log Revision Log | View Patch Patch

revision 1.117 by tjl, Sat Nov 30 18:28:02 2002 UTC revision 1.118 by tjl, Sat Nov 30 18:32:06 2002 UTC
# Line 607  all its effects are within the options d Line 607  all its effects are within the options d
607    
608  \subsubsection{Polygonal XXX}  \subsubsection{Polygonal XXX}
609    
610  Naturally, the undistorted shape can also be drawn polygonally, using  Naturally, the undistorted shape can also be drawn by by OpenGL primitives,
611    by drawing polygons enveloping the widest variation in the torn shape
612    and
613  the smooth shading interpolation in OpenGL to obtain the linearly  the smooth shading interpolation in OpenGL to obtain the linearly
614  falling value, to avoid using the second texture unit and rendering  falling value. This avoids the use of the second texture unit.
 the shape to a texture.  
615    
616  To obtain ebbing with a kind of displacement mapping, a similar polygonal  In this approach, we can also
617  approach  obtain ebbing with a kind of displacement mapping:
618  can be used: instead of accessing the noise texture at the pixel  instead of accessing the noise texture at the pixel
619  location of the paper, the noise texture is accessed at the location  location of the paper, the noise texture is accessed at the location
620  of the undistorted edge by calculating the texture coordinates appropriately.  of the undistorted edge by calculating the texture coordinates appropriately.
621    

Legend:
Removed from v.1.117  
changed lines
  Added in v.1.118

savannah-hackers-public@gnu.org
ViewVC Help
Powered by ViewVC 1.1.26