1GLUPWLCURVE(3G)                                                GLUPWLCURVE(3G)
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NAME

6       gluPwlCurve - describe a piecewise linear NURBS trimming curve
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C SPECIFICATION

10       void gluPwlCurve( GLUnurbs* nurb,
11                         GLint count,
12                         GLfloat* data,
13                         GLint stride,
14                         GLenum type )
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PARAMETERS

18       nurb    Specifies the NURBS object (created with gluNewNurbsRenderer).
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20       count   Specifies the number of points on the curve.
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22       data    Specifies an array containing the curve points.
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24       stride  Specifies  the  offset  (a number of single-precision floating-
25               point values) between points on the curve.
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27       type    Specifies the type of curve.  Must be either GLU_MAP1_TRIM_2 or
28               GLU_MAP1_TRIM_3.
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DESCRIPTION

31       gluPwlCurve  describes  a  piecewise  linear trimming curve for a NURBS
32       surface.  A piecewise linear curve consists of a list of coordinates of
33       points  in  the  parameter  space  for the NURBS surface to be trimmed.
34       These points are connected with line segments to form a curve.  If  the
35       curve  is an approximation to a curve that is not piecewise linear, the
36       points should be close enough in parameter  space  that  the  resulting
37       path appears curved at the resolution used in the application.
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39       If  type  is  GLU_MAP1_TRIM_2,  then it describes a curve in two-dimen‐
40       sional (u and v) parameter space. If it  is  GLU_MAP1_TRIM_3,  then  it
41       describes  a curve in two-dimensional homogeneous (u, v, and w) parame‐
42       ter space.  See the gluBeginTrim reference page  for  more  information
43       about trimming curves.
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NOTES

46       To  describe  a trim curve that closely follows the contours of a NURBS
47       surface, call gluNurbsCurve.
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SEE ALSO

50       gluBeginCurve(3G),      gluBeginTrim(3G),      gluNewNurbsRenderer(3G),
51       gluNurbsCurve(3G)
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56                                                               GLUPWLCURVE(3G)
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