Content-type: text/html Man page of mlib_GraphicsDrawCircle

mlib_GraphicsDrawCircle

Section: mediaLib Library Functions (3MLIB)
Updated: 2 Mar 2007
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NAME

mlib_GraphicsDrawCircle, mlib_GraphicsDrawCircle_8, mlib_GraphicsDrawCircle_32, mlib_GraphicsDrawCircle_X_8, mlib_GraphicsDrawCircle_X_32, mlib_GraphicsDrawCircle_A_8, mlib_GraphicsDrawCircle_A_32, mlib_GraphicsDrawCircle_B_8, mlib_GraphicsDrawCircle_B_32, mlib_GraphicsDrawCircle_AB_8, mlib_GraphicsDrawCircle_AB_32 - draw circle  

SYNOPSIS

cc [ flag... ] file... -lmlib [ library... ]
#include <mlib.h>

mlib_status mlib_GraphicsDrawCircle_8(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c);

mlib_status mlib_GraphicsDrawCircle_32(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c);

mlib_status mlib_GraphicsDrawCircle_X_8(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 c2);

mlib_status mlib_GraphicsDrawCircle_X_32(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 c2);

mlib_status mlib_GraphicsDrawCircle_A_8(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c);

mlib_status mlib_GraphicsDrawCircle_A_32(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c);

mlib_status mlib_GraphicsDrawCircle_B_8(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 a);

mlib_status mlib_GraphicsDrawCircle_B_32(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 a);

mlib_status mlib_GraphicsDrawCircle_AB_8(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 a);

mlib_status mlib_GraphicsDrawCircle_AB_32(mlib_image *buffer, mlib_s16 x,
    mlib_s16 y, mlib_s32 r, mlib_s32 c, mlib_s32 a);

 

DESCRIPTION

Each of the mlib_GraphicsDrawCircle_*() functions draws a circle with the center at (x, y) and radius r.

Each of the mlib_GraphicsDrawCircle_X_*() functions draws a circle in Xor mode as follows:

    data[x,y] ^= c ^ c2

Each of the mlib_GraphicsDrawCircle_A_*() functions draws a circle with antialiasing.

Each of the mlib_GraphicsDrawCircle_B_*() functions draws a circle with alpha blending as follows:

    data[x,y] = (data[x,y] * (255 - a) + c * a) / 255

Each of the mlib_GraphicsDrawCircle_AB_*() functions draws a circle with antialiasing and alpha blending.  

PARAMETERS

Each of the functions takes some of the following arguments:

buffer

Pointer to the image into which the function is drawing.

x

X coordinate of the center.

y

Y coordinate of the center.

r

Radius of the arc.

c

Color used in the drawing.

c2

Alternation color.

a

Alpha value for blending. 0 ≤ a ≤ 255.

 

RETURN VALUES

Each of the functions returns MLIB_SUCCESS if successful. Otherwise it returns MLIB_FAILURE.  

ATTRIBUTES

See attributes(5) for descriptions of the following attributes:

ATTRIBUTE TYPEATTRIBUTE VALUE

Interface StabilityCommitted

MT-Level

 

SEE ALSO

mlib_GraphicsDrawArc(3MLIB), mlib_GraphicsDrawEllipse(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:15 GMT, October 02, 2010