Function
Gimpgradient_get_custom_samples
since: 2.2
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-
Type:
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-
Type:
gintThe number of samples to take.
positions-
Type: An array of
doubleThe list of positions to sample along the gradient.
The length of the array is specified in the num_samplesargument.The data is owned by the caller of the function. reverse-
Type:
gbooleanUse the reverse gradient.
num_color_samples-
Type:
gint*Length of the color_samples array (4 * num_samples).
The argument will be set by the function. color_samples-
Type: An array of
doubleColor 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_samplesargument.The called function takes ownership of the data, and is responsible for freeing it.