'\" t
.\"     Title: reflect
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.79.1 <http://docbook.sf.net/>
.\"      Date: 01/03/2018
.\"    Manual: [FIXME: manual]
.\"    Source: [FIXME: source]
.\"  Language: English
.\"
.TH "REFLECT" "3G" "01/03/2018" "[FIXME: source]" "[FIXME: manual]"
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.\" * MAIN CONTENT STARTS HERE *
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.SH "NAME"
reflect \- calculate the reflection direction for an incident vector
.SH "DECLARATION"
.HP \w'genType\ reflect('u
.BI "genType reflect(genType\ " "I" ", genType\ " "N" ");"
.HP \w'genDType\ reflect('u
.BI "genDType reflect(genDType\ " "I" ", genDType\ " "N" ");"
.SH "PARAMETERS"
.PP
\fII\fR
.RS 4
Specifies the incident vector\&.
.RE
.PP
\fIN\fR
.RS 4
Specifies the normal vector\&.
.RE
.SH "DESCRIPTION"
.PP
For a given incident vector
\fII\fR
and surface normal
\fIN\fR
\fBreflect\fR
returns the reflection direction calculated as
\fII\fR \- 2\&.0 * \fBdot\fR(\fIN\fR, \fII\fR) * \fIN\fR\&.
.PP
\fIN\fR
should be normalized in order to achieve the desired result\&.
.SH "VERSION SUPPORT"
.TS
allbox tab(:);
lB cB s s s s s s s s s s s
lB cB cB cB cB cB cB cB cB cB cB cB cB.
T{

T}:T{
\fBOpenGL Shading Language Version\fR
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\fBFunction Name\fR
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\fB1\&.10\fR
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\fB1\&.20\fR
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\fB1\&.30\fR
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\fB3\&.30\fR
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\fB4\&.10\fR
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\fB4\&.20\fR
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\fB4\&.50\fR
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.T&
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l c c c c c c c c c c c c.
T{
reflect (genType)
T}:T{
✔
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reflect (genDType)
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\-
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\-
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\-
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\-
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\-
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.TE
.sp 1
.SH "SEE ALSO"
.PP
\fBdot\fR(),
\fBrefract\fR()
.SH "COPYRIGHT"
.PP
Copyright
\(co
2011\-2014 Khronos Group\&. This material may be distributed subject to the terms and conditions set forth in the Open Publication License, v 1\&.0, 8 June 1999\&.
\m[blue]\fBhttp://opencontent\&.org/openpub/\fR\m[]\&.
.SH "COPYRIGHT"
.br
Copyright \(co 2011-2014 Khronos Group
.br