HP b2600 Reference Guide

M
glMap2
Chapter 11
278
glMap2
glMap2d, glMap2f: define a two-dimensional evaluator.
C Specification
void glMap2d(
GLenum target,
GLdouble u1,
GLdouble u2,
GLint ustride,
GLint uorder,
GLdouble v1,
GLdouble v2,
GLint vstride,
GLint vorder,
const GLdouble *points)
void glMap2f(
GLenum target,
GLfloat u1,
GLfloat u2,
GLint ustride,
GLint uorder,
GLfloat v1,
GLfloat v2,
GLint vstride,
GLint vorder,
const GLfloat*points)
Parameters
target Specifies the kind of values that are generated by the evaluator.
Symbolic constants GL_MAP2_VERTEX_3, GL_MAP2_VERTEX_4,
GL_MAP2_INDEX, GL_MAP2_COLOR_4, GL_MAP2_NORMAL,
GL_MAP2_TEXTURE_COORD_1, GL_MAP2_TEXTURE_COORD_2,
GL_MAP2_TEXTURE_COORD_3, and
GL_MAP2_TEXTURE_COORD_4 are accepted.
u1, u2 Specify a linear mapping of u, as presented to glEvalCoord2, to û, one
of the two variables that are evaluated by the equations specified by
this command. Initially, u1 is 0 and u2 is 1.
ustride Specifies the number of floats or doubles between the beginning of
control point R
ij
and the beginning of control point R
(i+1)j
, where i and j
are the u and v control point indices, respectively. This allows control
points to be embedded in arbitrary data structures. The only constraint
is that the values for a particular control point must occupy contiguous
memory locations. The initial value of ustride is 0.
uorder Specifies the dimension of the control point array in the u axis. Must be
positive. The initial value is 1.

HP b2600 Specifications

General

Brand	HP
Model	b2600
Category	Desktop
Language	English