Content-type: text/html Man page of mlib_GraphicsDrawPointSet

mlib_GraphicsDrawPointSet

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

mlib_GraphicsDrawPointSet, mlib_GraphicsDrawPointSet_8, mlib_GraphicsDrawPointSet_32, mlib_GraphicsDrawPointSet_X_8, mlib_GraphicsDrawPointSet_X_32, mlib_GraphicsDrawPointSet_B_8, mlib_GraphicsDrawPointSet_B_32, mlib_GraphicsDrawPolypoint_8, mlib_GraphicsDrawPolypoint_32, mlib_GraphicsDrawPolypoint_X_8, mlib_GraphicsDrawPolypoint_X_32, mlib_GraphicsDrawPolypoint_B_8, mlib_GraphicsDrawPolypoint_B_32 - draw a set of points  

SYNOPSIS

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

mlib_status mlib_GraphicsDrawPointSet_8(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c);

mlib_status mlib_GraphicsDrawPointSet_32(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c);

mlib_status mlib_GraphicsDrawPointSet_X_8(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints,
    mlib_s32 c, mlib_s32 c2);

mlib_status mlib_GraphicsDrawPointSet_X_32(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, 
    mlib_s32 c, mlib_s32 c2);

mlib_status mlib_GraphicsDrawPointSet_B_8(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c,
    mlib_s32 a);

mlib_status mlib_GraphicsDrawPointSet_B_32(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c,
    mlib_s32 a);

mlib_status mlib_GraphicsDrawPolypoint_8(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c);

mlib_status mlib_GraphicsDrawPolypoint_32(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c);

mlib_status mlib_GraphicsDrawPolypoint_X_8(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c,
    mlib_s32 c2);

mlib_status mlib_GraphicsDrawPolypoint_X_32(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c,
    mlib_s32 c2);

mlib_status mlib_GraphicsDrawPolypoint_B_8(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c,
    mlib_s32 c2);

mlib_status mlib_GraphicsDrawPolypoint_B_32(mlib_image *buffer,
    const mlib_s16 *x, const mlib_s16 *y, mlib_s32 npoints, mlib_s32 c,
    mlib_s32 c2);

 

DESCRIPTION

Each of the mlib_GraphicsDrawPointSet_*() and mlib_GraphicsDrawPolypoint_*() functions draws a set of points at (x1,y1), (x2,y2), ..., and (xn,yn).

Each of the mlib_GraphicsDrawPointSet_X_*() and mlib_GraphicsDrawPolypoint_X_*() functions draws a set of points at (x1,y1), (x2,y2), ..., and (xn,yn) in Xor mode as follows:

    data[x,y] ^= c ^ c2

Each of the mlib_GraphicsDrawPointSet_B_*() and mlib_GraphicsDrawPolypoint_B_*() functions draws a set of points at (x1,y1), (x2,y2), ..., and (xn,yn) with alpha blending as follows:

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

The mlib_GraphicsDrawPolypoint_*() functions are aliases of the mlib_GraphicsDrawPointSet_*() functions.  

PARAMETERS

Each of the functions takes some of the following arguments:

buffer

Pointer to the image into which the function is drawing.

x

Pointer to array of X coordinates of the points.

y

Pointer to array of Y coordinates of the points.

npoints

Number of points in the arrays.

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_GraphicsDrawPoint(3MLIB), attributes(5)


 

Index

NAME
SYNOPSIS
DESCRIPTION
PARAMETERS
RETURN VALUES
ATTRIBUTES
SEE ALSO

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Time: 02:38:04 GMT, October 02, 2010