Function

Gimpgradient_get_custom_samples

Declaration [src]

gboolean
gimp_gradient_get_custom_samples (
  const gchar* name,
  gint num_samples,
  const gdouble* positions,
  gboolean reverse,
  gint* num_color_samples,
  gdouble** color_samples
)

Description [src]

Sample the specified gradient in custom positions.

This procedure samples the active gradient in the specified number of points. The procedure will sample the gradient in the specified positions from the list. The left endpoint of the gradient corresponds to position 0.0, and the right endpoint corresponds to 1.0. The procedure returns a list of floating-point values which correspond to the RGBA values for each sample.

Available since:2.2

Parameters

name const gchar*
 

The gradient name.

 The data is owned by the caller of the function.
 The value is a NUL terminated UTF-8 string.
num_samples gint
 

The number of samples to take.

positions An array of double
 

The list of positions to sample along the gradient.

 The length of the array is specified in the num_samples argument.
 The data is owned by the caller of the function.
reverse gboolean
 

Use the reverse gradient.

num_color_samples gint*
 

Length of the color_samples array (4 * num_samples).

 The argument will be set by the function.
color_samples An array of double
 

Color samples: { R1, G1, B1, A1, …, Rn, Gn, Bn, An }.

 The argument will be set by the function.
 The length of the array is specified in the num_color_samples argument.
 The called function takes ownership of the data, and is responsible for freeing it.

Return value

Returns: gboolean
 

TRUE on success.