Connector

public open class Connector internal constructor(
    /**
     * Returns the source color space this connector will convert from.
     *
     * @return A non-null instance of [ColorSpace]
     * @see destination
     */
    public val source: ColorSpace,
    /**
     * Returns the destination color space this connector will convert to.
     *
     * @return A non-null instance of [ColorSpace]
     * @see source
     */
    public val destination: ColorSpace,
    private val transformSource: ColorSpace,
    private val transformDestination: ColorSpace,
    /**
     * Returns the render intent this connector will use when mapping the source color space to the
     * destination color space.
     *
     * @return A non-null [RenderIntent]
     * @see RenderIntent
     */
    public val renderIntent: RenderIntent,
    private val transform: FloatArray?,
)

A connector transforms colors from a source color space to a destination color space.

A source color space is connected to a destination color space using the color transform C computed from their respective transforms noted Tsrc and Tdst in the following equation:

See equation

The transform C shown above is only valid when the source and destination color spaces have the same profile connection space (PCS). We know that instances of ColorSpace always use CIE XYZ as their PCS but their white points might differ. When they do, we must perform a chromatic adaptation of the color spaces' transforms. To do so, we use the von Kries method described in the documentation of Adaptation, using the CIE standard illuminant D50 as the target white point.

Example of conversion from sRGB to DCI-P3:

val connector = ColorSpaces.Srgb.connect(ColorSpaces.DciP3); val p3 = connector.transform(1.0f, 0.0f, 0.0f); // p3 contains { 0.9473, 0.2740, 0.2076 }

Functions

transform

public fun transform(r: Float, g: Float, b: Float): FloatArray

Transforms the specified color from the source color space to a color in the destination color space. This convenience method assumes a source color model with 3 components (typically RGB). To transform from color models with more than 3 components, such as CMYK, use transform instead.

Parameters

Return

A new array of 3 floats containing the specified color transformed from the source space to the destination space

transform

public open fun transform(@Size(min = 3) v: FloatArray): FloatArray

Transforms the specified color from the source color space to a color in the destination color space.

Parameters

Return

The v array passed as a parameter, containing the specified color transformed from the source space to the destination space