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ParVox Parallel Volume Rendering System
ParVox Home ../Images & Animations ParVox Document Download Source PAT Home Section 387 Division 38
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vlortho


NAME

    vlortho  -  Multiple the current matrix by a orthographic matrix

SYNOPSIS

    #include <parvox.h>

    void vlortho(float left, float right, float bottom, float top, float near, float far) 


DESCRIPTION

    vlviewport() describes a matrix that produces a parallel projection.  left and right specify the coordinates for the left and right vertical clipping planes, bottom and top specify the coordinates for the bottom and top horizontal clipping planes, and near and far specify the distances to the nearer and farther depth cliping planes.  Both near and far can be negative which means that the plane is behind the viewer.  (left, bottom, -near) and (right, top, -near) specify the points on the near clippin plane that are mapped to the lower left and upper right corners of the window, respectively, assuming that the eye is located at (0, 0, 0).   The current matrix is multiplied by the orthographic matrix, with the product replacing the current matrix.


SEE ALSO

    vlmatrix_mode, vlviewport


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FIRST GOV   NASA Home Page This page, http://pat.jpl.nasa.gov/public/ParVox/API/vlortho.html, is maintained by Peggy Li and was last modified Wednesday, 09-Mar-2005 16:52:12 PST
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