Index for Section 3

Alphabetical listing for G

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gluLoadSamplingMatrices()
NAME
  gluLoadSamplingMatrices - load NURBS sampling and culling matrices

SYNOPSIS
  void gluLoadSamplingMatrices(
	  GLUnurbs* nurb,
	  const GLfloat *model,
	  const GLfloat *perspective,
	  const GLint *view );

PARAMETERS
  nurb
      Specifies the NURBS object (created with gluNewNurbsRenderer()).

  model
      Specifies a modelview matrix (as from a glGetFloatv() call).

  perspective
      Specifies a projection matrix (as from a glGetFloatv() call).

  view
      Specifies a viewport (as from a glGetIntegerv() call).

DESCRIPTION
  gluLoadSamplingMatrices() uses model, perspective, and view to recompute
  the sampling and culling matrices stored in nurb. The sampling matrix
  determines how finely a NURBS curve or surface must be tessellated to
  satisfy the sampling tolerance (as determined by the GLU_SAMPLING_TOLERANCE
  property). The culling matrix is used in deciding if a NURBS curve or
  surface should be culled before rendering (when the GLU_CULLING property is
  turned on).

  gluLoadSamplingMatrices() is necessary only if the GLU_AUTO_LOAD_MATRIX
  property is turned off (see gluNurbsProperty()). Although it can be
  convenient to leave the GLU_AUTO_LOAD_MATRIX property turned on, there can
  be a performance penalty for doing so. (A round trip to the GL server is
  needed to fetch the current values of the modelview matrix, projection
  matrix, and viewport.)

SEE ALSO
  gluGetNurbsProperty(3), gluNewNurbsRenderer(3), gluNurbsProperty(3)

Index for Section 3

Alphabetical listing for G

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