VolumeViz/vvizCoordinates_frag.h File Reference

This file function relative to rectilinear coordinate support. More...

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Functions
vec3	VVizComputeCoordinates (const vec3 dataCoord)

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Detailed Description

This file function relative to rectilinear coordinate support.

Definition in file vvizCoordinates_frag.h.

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Function Documentation

vec3 VVizComputeCoordinates

(

const vec3

dataCoord

)

Compute new coordinates from input coordinates.

This method is used to support rectilinear coordinates or custom projection. It computes voxel coordinates and must be used instead of gl_TexCoord[0].xyz. If not used, texture coordinates may not be clamped, scaled, etc... as necessary in order to have correct rendering.

The parameter usually is gl_TexCoord[0].xyz (in slicing mode only). The returned coordinate is in general directly passed to VVizCombineData method.

Parameters:

dataCoord

Coordinates of point, in normalized dataset space.

Returns:

Projected coord if requested, returns dataCoord by default.