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mlib_volumeraycast_general_divergent_nearest_s16_s16

mlib_VolumeRayCast_General(3MLIB)			    mediaLib Library Functions				 mlib_VolumeRayCast_General(3MLIB)

NAME

       mlib_VolumeRayCast_General,	mlib_VolumeRayCast_General_Parallel_Nearest_U8_Bit,	mlib_VolumeRayCast_General_Parallel_Nearest_U8_U8,
       mlib_VolumeRayCast_General_Parallel_Nearest_S16_S16, mlib_VolumeRayCast_General_Parallel_Trilinear_U8_U8, mlib_VolumeRayCast_General_Paral-
       lel_Trilinear_S16_S16,  mlib_VolumeRayCast_General_Divergent_Nearest_U8_Bit,  mlib_VolumeRayCast_General_Divergent_Nearest_U8_U8, mlib_Vol-
       umeRayCast_General_Divergent_Nearest_S16_S16,	mlib_VolumeRayCast_General_Divergent_Trilinear_U8_U8,	 mlib_VolumeRayCast_General_Diver-
       gent_Trilinear_S16_S16 - cast a ray (or rays) through a 3D data set

SYNOPSIS

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

       mlib_status mlib_VolumeRayCast_General_Parallel_Nearest_U8_Bit(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

       mlib_status mlib_VolumeRayCast_General_Parallel_Nearest_U8_U8(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

       mlib_status mlib_VolumeRayCast_General_Parallel_Nearest_S16_S16(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

       mlib_status mlib_VolumeRayCast_General_Parallel_Trilinear_U8_U8(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

       mlib_status mlib_VolumeRayCast_General_Parallel_Trilinear_S16_S16(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

       mlib_status mlib_VolumeRayCast_General_Divergent_Nearest_U8_Bit(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

       mlib_status mlib_VolumeRayCast_General_Divergent_Nearest_U8_U8(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

       mlib_status mlib_VolumeRayCast_General_Divergent_Nearest_S16_S16(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

       mlib_status mlib_VolumeRayCast_General_Divergent_Trilinear_U8_U8(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

       mlib_status mlib_VolumeRayCast_General_Divergent_Trilinear_S16_S16(
	    mlib_rays *rays, const mlib_genvolume *vol, void *buffer);

DESCRIPTION

       Each of these functions casts a ray (or rays) through a three-dimensional(3D) data set, then computes and returns the interpolated samples
       at each step along the way.

       In trilinear interpolation, the value at point P is computed from its eight surrounding neighbors based on the equation below.

	 P = (1-a)*(1-b)*(1-c)*P0 +
	     a*(1-b)*(1-c)*Px + (1-a)*b*(1-c)*Py + (1-a)*(1-b)*c*Pz +
	     a*b*(1-c)*Pxy + a*(1-b)*c*Pxz + (1-a)*b*c*Pyz +
	     a*b*c*Pxyz

       where a, b, and c are the fractional parts of the coordinates of point P.

       The trilinear interpolation is represented by the following figure:

       Printed copy or docs.sun.com displays a figure that represents the trilinear interpolation.

       In nearest neighbor operation, the sample value at point P is replaced by the value of the nearest neighbor voxel.

PARAMETERS

       Each of the functions takes the following arguments:

       rays	 Casting rays.

       vol	 Volume data that consists of slices.

       buffer	 Working buffer.

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 TYPE	     |	    ATTRIBUTE VALUE	   |
       +-----------------------------+-----------------------------+
       |Interface Stability	     |Committed 		   |
       +-----------------------------+-----------------------------+
       |MT-Level		     |MT-Safe			   |
       +-----------------------------+-----------------------------+

SEE ALSO

       mlib_VolumeRayCast_Blocked(3MLIB), attributes(5)

SunOS 5.11							    2 Mar 2007					 mlib_VolumeRayCast_General(3MLIB)

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mlib_volumeraycast_general_divergent_nearest_s16_s16