Query: glubegincurve
OS: centos
Section: 3g
Format: Original Unix Latex Style Formatted with HTML and a Horizontal Scroll Bar
GLUBEGINCURVE(3G) OpenGL Manual GLUBEGINCURVE(3G)NAMEgluBeginCurve - delimit a NURBS curve definitionC SPECIFICATIONvoid gluBeginCurve(GLUnurbs* nurb);C SPECIFICATIONvoid gluEndCurve(GLUnurbs* nurb);PARAMETERSnurb Specifies the NURBS object (created with gluNewNurbsRenderer()).DESCRIPTIONUse gluBeginCurve to mark the beginning of a NURBS curve definition. After calling gluBeginCurve, make one or more calls to gluNurbsCurve() to define the attributes of the curve. Exactly one of the calls to gluNurbsCurve() must have a curve type of GLU_MAP1_VERTEX_3 or GLU_MAP1_VERTEX_4. To mark the end of the NURBS curve definition, call gluEndCurve(). GL evaluators are used to render the NURBS curve as a series of line segments. Evaluator state is preserved during rendering with glPushAttrib()(GLU_EVAL_BIT) and glPopAttrib()(). See the glPushAttrib() reference page for details on exactly what state these calls preserve.EXAMPLEThe following commands render a textured NURBS curve with normals; texture coordinates and normals are also specified as NURBS curves: gluBeginCurve(nobj); gluNurbsCurve(nobj, ..., GL_MAP1_TEXTURE_COORD_2); gluNurbsCurve(nobj, ..., GL_MAP1_NORMAL); gluNurbsCurve(nobj, ..., GL_MAP1_VERTEX_4); gluEndCurve(nobj);SEE ALSOgluBeginSurface(), gluBeginTrim(), gluNewNurbsRenderer(), gluNurbsCurve(), glPopAttrib(), glPushAttrib()COPYRIGHTCopyright (C) 1991-2006 Silicon Graphics, Inc. This document is licensed under the SGI Free Software B License. For details, see http://oss.sgi.com/projects/FreeB/.AUTHORSopengl.org opengl.org 06/10/2014 GLUBEGINCURVE(3G)
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