'\"
'\" Copyright (c) 1997 Maorong Zou
'\" 
.TH EZ_LookAt 3 "" EZWGL "EZWGL Functions"
.BS
.SH NAME
EZ_LookAt \- multiply the current matrix by a viewing matrix

.SH SYNOPSIS
.nf
.B #include <EZ.h>
.sp
.BI "void EZ_LookAt(float " vx ", float " vy ", float " vz, 
.BI "                float " px ", float " py ", float " pz )
.BI "                float " ux ", float " uy ", float " uz )

.SH ARGUMENTS
\fIvx\fR,\fIvy\fR,\fIvz\fR  Specify the location of viewpoint.
.sp
\fIpx\fR,\fIpy\fR,\fIpz\fR  Specify the location of the reference point.
.sp
\fIux\fR,\fIuy\fR,\fIuz\fR  Specify the view up vector.

.SH DESCRIPTION
\fBEZ_LookAt\fR defines the line of sight and a view up vector. The
viewpoint is at [vx,vy,vz], looking at the reference point
[px,py,pz], with a view up vector [ux,uy, uz]. 

\fBEZ_LookAt\fR generates the corresponding  transformation
matrix and multiply the top matrix of the current matrix stack
by this matrix.

.SH "SEE ALSO"
EZ_Rotate(3), EZ_Translate(3), EZ_Ortho(3), EZ_Frustum(3),
EZ_MultMatrix(3), EZ_MatrixMode(3), EZ_Perspective(3)