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glVertex

Name

glVertex — specify a vertex

C Specification

void glVertex2s(GLshort  x,
 GLshort  y);
void glVertex2i(GLint  x,
 GLint  y);
void glVertex2f(GLfloat  x,
 GLfloat  y);
void glVertex2d(GLdouble  x,
 GLdouble  y);
void glVertex3s(GLshort  x,
 GLshort  y,
 GLshort  z);
void glVertex3i(GLint  x,
 GLint  y,
 GLint  z);
void glVertex3f(GLfloat  x,
 GLfloat  y,
 GLfloat  z);
void glVertex3d(GLdouble  x,
 GLdouble  y,
 GLdouble  z);
void glVertex4s(GLshort  x,
 GLshort  y,
 GLshort  z,
 GLshort  w);
void glVertex4i(GLint  x,
 GLint  y,
 GLint  z,
 GLint  w);
void glVertex4f(GLfloat  x,
 GLfloat  y,
 GLfloat  z,
 GLfloat  w);
void glVertex4d(GLdouble  x,
 GLdouble  y,
 GLdouble  z,
 GLdouble  w);

Parameters

x, y, z, w

Specify x, y, z, and w coordinates of a vertex. Not all parameters are present in all forms of the command.

C Specification

void glVertex2sv(const GLshort *  v);
void glVertex2iv(const GLint *  v);
void glVertex2fv(const GLfloat *  v);
void glVertex2dv(const GLdouble *  v);
void glVertex3sv(const GLshort *  v);
void glVertex3iv(const GLint *  v);
void glVertex3fv(const GLfloat *  v);
void glVertex3dv(const GLdouble *  v);
void glVertex4sv(const GLshort *  v);
void glVertex4iv(const GLint *  v);
void glVertex4fv(const GLfloat *  v);
void glVertex4dv(const GLdouble *  v);

Parameters

v

Specifies a pointer to an array of two, three, or four elements. The elements of a two-element array are x and y; of a three-element array, x, y, and z; and of a four-element array, x, y, z, and w.

Description

glVertex commands are used within glBegin/glEnd pairs to specify point, line, and polygon vertices. The current color, normal, texture coordinates, and fog coordinate are associated with the vertex when glVertex is called.

When only x and y are specified, z defaults to 0 and w defaults to 1. When x, y, and z are specified, w defaults to 1.

Notes

Invoking glVertex outside of a glBegin/glEnd pair results in undefined behavior.

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