Current File : //usr/man/man3mlib/mlib_GraphicsDrawArc.3mlib

'\" te
.\" Copyright (c) 2007, Sun Microsystems, Inc.  All Rights Reserved 
.TH mlib_GraphicsDrawArc 3MLIB "2 Mar 2007" "SunOS 5.11" "mediaLib Library Functions"
.SH NAME
mlib_GraphicsDrawArc, mlib_GraphicsDrawArc_8, mlib_GraphicsDrawArc_32, mlib_GraphicsDrawArc_X_8, mlib_GraphicsDrawArc_X_32, mlib_GraphicsDrawArc_A_8, mlib_GraphicsDrawArc_A_32, mlib_GraphicsDrawArc_B_8, mlib_GraphicsDrawArc_B_32, mlib_GraphicsDrawArc_AB_8, mlib_GraphicsDrawArc_AB_32 \- draw arc
.SH SYNOPSIS
.LP
.nf
cc [ \fIflag\fR... ] \fIfile\fR... \fB-lmlib\fR [ \fIlibrary\fR... ]
#include <mlib.h>

\fBmlib_status\fR \fBmlib_GraphicsDrawArc_8\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_GraphicsDrawArc_32\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_GraphicsDrawArc_X_8\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR,
     \fBmlib_s32\fR \fIc2\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_GraphicsDrawArc_X_32\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR,
     \fBmlib_s32\fR \fIc2\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_GraphicsDrawArc_A_8\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_GraphicsDrawArc_A_32\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_GraphicsDrawArc_B_8\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR,
     \fBmlib_s32\fR \fIa\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_GraphicsDrawArc_B_32\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR,
     \fBmlib_s32\fR \fIa\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_GraphicsDrawArc_AB_8\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR,
     \fBmlib_s32\fR \fIa\fR);
.fi

.LP
.nf
\fBmlib_status\fR \fBmlib_GraphicsDrawArc_AB_32\fR(\fBmlib_image *\fR\fIbuffer\fR, \fBmlib_s16\fR \fIx\fR,
     \fBmlib_s16\fR \fIy\fR, \fBmlib_s32\fR \fIr\fR, \fBmlib_f32\fR \fIt1\fR, \fBmlib_f32\fR \fIt2\fR, \fBmlib_s32\fR \fIc\fR,
     \fBmlib_s32\fR \fIa\fR);
.fi

.SH DESCRIPTION
.sp
.LP
Each of the \fBmlib_GraphicsDrawArc_*()\fR functions draws an arc with the center at (\fIx\fR, \fIy\fR), radius \fIr\fR, start angle \fIt1\fR, and end angle \fIt2\fR.
.sp
.LP
Each of the \fBmlib_GraphicsDrawArc_X_*()\fR functions draws an arc in Xor mode as follows:
.sp
.in +2
.nf
    data[x,y] ^= c ^ c2
.fi
.in -2

.sp
.LP
Each of the \fBmlib_GraphicsDrawArc_A_*()\fR functions draws an arc with antialiasing.
.sp
.LP
Each of the \fBmlib_GraphicsDrawArc_B_*()\fR functions draws an arc with alpha blending as follows:
.sp
.in +2
.nf
    data[x,y] = (data[x,y] * (255 - a) + c * a) / 255
.fi
.in -2

.sp
.LP
Each of the \fBmlib_GraphicsDrawArc_AB_*()\fR functions draws an arc with antialiasing and alpha blending.
.SH PARAMETERS
.sp
.LP
Each of the functions takes some of the following arguments:
.sp
.ne 2
.mk
.na
\fB\fIbuffer\fR\fR
.ad
.RS 10n
.rt  
Pointer to the image into which the function is drawing.
.RE

.sp
.ne 2
.mk
.na
\fB\fIx\fR\fR
.ad
.RS 10n
.rt  
X coordinate of the center.
.RE

.sp
.ne 2
.mk
.na
\fB\fIy\fR\fR
.ad
.RS 10n
.rt  
Y coordinate of the center.
.RE

.sp
.ne 2
.mk
.na
\fB\fIr\fR\fR
.ad
.RS 10n
.rt  
Radius of the arc.
.RE

.sp
.ne 2
.mk
.na
\fB\fIt1\fR\fR
.ad
.RS 10n
.rt  
Start angle of the arc in radians.
.RE

.sp
.ne 2
.mk
.na
\fB\fIt2\fR\fR
.ad
.RS 10n
.rt  
End angle of the arc in radians.
.RE

.sp
.ne 2
.mk
.na
\fB\fIc\fR\fR
.ad
.RS 10n
.rt  
Color used in the drawing.
.RE

.sp
.ne 2
.mk
.na
\fB\fIc2\fR\fR
.ad
.RS 10n
.rt  
Alternation color.
.RE

.sp
.ne 2
.mk
.na
\fB\fIa\fR\fR
.ad
.RS 10n
.rt  
Alpha value for blending. \fB0 \(<= a \(<= 255\fR.
.RE

.SH RETURN VALUES
.sp
.LP
Each of the functions returns \fBMLIB_SUCCESS\fR if successful. Otherwise it returns \fBMLIB_FAILURE\fR.
.SH ATTRIBUTES
.sp
.LP
See \fBattributes\fR(5) for descriptions of the following attributes:
.sp

.sp
.TS
tab() box;
cw(2.75i) |cw(2.75i) 
lw(2.75i) |lw(2.75i) 
.
ATTRIBUTE TYPEATTRIBUTE VALUE
_
Interface StabilityCommitted
_
MT-LevelMT-Safe
.TE

.SH SEE ALSO
.sp
.LP
\fBmlib_GraphicsDrawCircle\fR(3MLIB), \fBmlib_GraphicsDrawEllipse\fR(3MLIB), \fBattributes\fR(5)