The "cf" Package

These routines are meant to provide a VERY primitive mechanism to generate simple colourmaps. Although these routines are made public, their use is NOT recommended. The kcmap package is the suggested means to create and manipulate colourmaps.

Library: karma
Link With: -lkarma

Functions

cf_mandelbrot	Compute a mandelbrot colourmap.
cf_greyscale1	Compute a greyscale colourmap.
cf_greyscale2	Compute a greyscale colourmap.
cf_greyscale3	Compute a greyscale colourmap.
cf_rainbow1	Compute a rainbow colourmap.
cf_rainbow2	Compute a rainbow colourmap.
cf_rainbow3	Compute a rainbow colourmap.
cf_cyclic1	Compute a rainbow colourmap.
cf_stripchart	Compute a rainbow colourmap.
cf_random_grey	Compute a random grey colourmap.
cf_random_pseudocolour	Compute a random pseudocolour colourmap.
cf_velocity_compensating_tones	Compute a Velocity (compensating tones) colourmap.
cf_compressed_colourmap_3r2g2b	Compute a compressed colourmap.
cf_ronekers	Compute a Ron Ekers colourmap.
cf_background	Compute a background colourmap.
cf_heat	Compute a heat colourmap.
cf_isophot	Compute an isophot colourmap.
cf_mono	Compute a greyscale colourmap.
cf_mousse	Compute a mousse colourmap.
cf_rainbow	Compute a rainbow colourmap.
cf_random	Compute a rainbow colourmap.
cf_rgb	Compute an rainbow colourmap.
cf_smooth	Compute a rainbow colourmap.
cf_staircase	Compute a staircase colourmap.
cf_mirp	Compute a MIRP colourmap.
cf_rgb2	Compute a MIRP colourmap.
cf_fire	Compute a "Fire" colourmap.
cf_spring	Compute a "Spring" colourmap.
cf_sea	Compute a "Sea" colourmap.
cf_sunbow	Compute a "Sunbow" colourmap.
cf_mutant	Compute a "Mutant" colourmap.
cf_aberration	Compute an "Aberration" colourmap.
cf_colour_table	Compute a colourmap using a table.

Functions

void cf_mandelbrot (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a mandelbrot colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_greyscale1 (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a greyscale colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The array of red intensity values. This may be NULL.
greens : The array of green intensity values. This may be NULL.
blues : The array of blue intensity values. This may be NULL.
stride : The stride (in unsigned shorts) between intensity values in the array.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values.

Returns: Nothing.
Multithreading Level: Unsafe
Note:

The x and y values are used to compute an offset and slope for a linear function.

void cf_greyscale2 (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a greyscale colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The array of red intensity values. This may be NULL.
greens : The array of green intensity values. This may be NULL.
blues : The array of blue intensity values. This may be NULL.
stride : The stride (in unsigned shorts) between intensity values in the array.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values.

Returns: Nothing.
Multithreading Level: Unsafe
Note:

The x and y values define the break point between two lines in the transform diagram.

void cf_greyscale3 (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

This routine will compute a greyscale colourmap using the Glynn Rogers curvature function.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values. This may be NULL.
greens : The green intensity values. This may be NULL.
blues : The blue intensity values. This may be NULL.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_rainbow1 (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

This routine will compute a colourmap using the Glynn Rogers curvature function. This map goes: blue-cyan-green-yellow-red-magenta.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_rainbow2 (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

This routine will compute a colourmap using the Glynn Rogers curvature function. This map goes: black-blue-cyan-green-yellow-red.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_rainbow3 (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

This routine will compute a colourmap using the Glynn Rogers curvature function. This map goes: black-blue-cyan-green-yellow-white.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_cyclic1 (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

This routine will compute a colourmap using the Glynn Rogers curvature function. This map goes: blue-cyan-green-yellow-white.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_stripchart (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *chart)

This routine will compute a colourmap using the Glynn Rogers curvature function and a strip chart.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values. This may be NULL.
greens : The green intensity values. This may be NULL.
blues : The blue intensity values. This may be NULL.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0. This changes the curvature of the ramping function.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0. This changes the curvature of the ramping function.
chart : A pointer to a stripchart of type stripchart. The following values are used to determine the shape of the graph: 0 : graph is at zero for this interval 99 : graph is at maximum 1 : graph ramps up from zero to max using Glynn Rogers function -1 : graph ramps down from max to zero using Glynn Rogers function 2 (-2) : graph ramps up (down) using the sine of Glynn Rogers function

Returns: Nothing.
Multithreading Level: Unsafe

void cf_random_grey (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a random grey colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values. This may be NULL.
greens : The green intensity values. This may be NULL.
blues : The blue intensity values. This may be NULL.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_random_pseudocolour (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a random pseudocolour colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_velocity_compensating_tones (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a Velocity (compensating tones) colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_compressed_colourmap_3r2g2b (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a compressed colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_ronekers (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a Ron Ekers colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_background (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a background colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_heat (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a heat colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_isophot (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute an isophot colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_mono (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a greyscale colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values. This may be NULL.
greens : The green intensity values. This may be NULL.
blues : The blue intensity values. This may be NULL.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_mousse (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a mousse colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_rainbow (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a rainbow colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_random (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a rainbow colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_rgb (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute an rainbow colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_smooth (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a rainbow colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_staircase (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a staircase colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_mirp (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a MIRP colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

void cf_rgb2 (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a MIRP colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

EXPERIMENTAL FUNCTION: subject to change without notice

void cf_fire (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a "Fire" colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

EXPERIMENTAL FUNCTION: subject to change without notice

void cf_spring (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a "Spring" colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

EXPERIMENTAL FUNCTION: subject to change without notice

void cf_sea (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a "Sea" colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

EXPERIMENTAL FUNCTION: subject to change without notice

void cf_sunbow (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a "Sunbow" colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

EXPERIMENTAL FUNCTION: subject to change without notice

void cf_mutant (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute a "Mutant" colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

EXPERIMENTAL FUNCTION: subject to change without notice

void cf_aberration (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, void *var_param)

Compute an "Aberration" colourmap.

Parameters:

num_cells : The number of colour cells to modify.
reds : The red intensity values.
greens : The green intensity values.
blues : The blue intensity values.
stride : The stride (in unsigned shorts) between intensity values.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
var_param : A parameter used to compute the colour values. Ignored.

Returns: Nothing.
Multithreading Level: Unsafe

EXPERIMENTAL FUNCTION: subject to change without notice

void cf_colour_table (unsigned int num_cells, unsigned short *reds, unsigned short *greens, unsigned short *blues, unsigned int stride, double x, double y, CONST Colour_struct *lut, unsigned int lut_size)

Compute a colourmap using a table.

Parameters:

num_cells : The number of colour cells to modify.
reds : The array of red intensity values. This may be NULL.
greens : The array of green intensity values. This may be NULL.
blues : The array of blue intensity values. This may be NULL.
stride : The stride (in unsigned shorts) between intensity values in the array.
x : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
y : A parameter used to compute the colour values, ranging from 0.0 to 1.0.
lut : The lookup table.
lut_size : The size of the lookup table.

Returns: Nothing.
Multithreading Level: Unsafe

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