gluPwlCurve
[New
- Windows 95, OEM Service Release 2]
The gluPwlCurve function describes a piecewise
linear NURBS trimming curve.
void gluPwlCurve(
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GLUnurbsObj * nobj, |
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GLint count, |
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GLfloat * array, |
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GLint stride,
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GLenum type |
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); |
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Parameters
nobj
The NURBS
object (created with gluNewNurbsRenderer).
count
The number of
points on the curve.
array
An array
containing the curve points.
stride
The offset (a
number of single-precision floating-point values) between points on the curve.
type
The type of
curve. Must be either GLU_MAP1_TRIM_2 or GLU_MAP1_TRIM_3.
Remarks
The gluPwlCurve function describes a piecewise
linear trimming curve for a NURBS surface. A piecewise linear curve consists of
a list of coordinates of points in the parameter space for the NURBS surface to
be trimmed. These points are connected with line segments to form a curve. If
the curve is an approximation to a real curve, the points should be close
enough that the resulting path appears curved at the resolution used in the
application.
If type is GLU_MAP1_TRIM_2, it describes a
curve in two-dimensional (u and v) parameter space. If it is
GLU_MAP1_TRIM_3, then it describes a curve in two-dimensional homogeneous (u,
v, and w) parameter space. For more information about trimming
curves, see gluBeginTrim.
See Also