Class: Gsk::ColorMatrixNode

Inherits:

RenderNode

• Object
• RenderNode
• Gsk::ColorMatrixNode

Defined in:

(unknown)

Overview

A render node controlling the color matrix of its single child node.

Instance Method Summary

• #child ⇒ Gsk::RenderNode

  Gets the child node that is getting its colors modified by the given node.

• #color_matrix ⇒ Graphene::Matrix

  Retrieves the color matrix used by the node.

• #color_offset ⇒ Graphene::Vec4

  Retrieves the color offset used by the node.

• #initialize(child, color_matrix, color_offset) ⇒ Gsk::ColorMatrixNode constructor

  Creates a GskRenderNode that will drawn the child with color_matrix.

Methods inherited from RenderNode

deserialize, #draw, #get_bounds, #node_type, #ref, #serialize, #unref, #write_to_file

Constructor Details

#initialize(child, color_matrix, color_offset) ⇒ Gsk::ColorMatrixNode

Creates a GskRenderNode that will drawn the child with color_matrix.

In particular, the node will transform colors by applying

pixel = transpose(color_matrix) * pixel + color_offset

for every pixel. The transformation operates on unpremultiplied colors, with color components ordered R, G, B, A.

Parameters:

• child (Gsk::RenderNode) —

  The node to draw

• color_matrix (Graphene::Matrix) —

  The matrix to apply

• color_offset (Graphene::Vec4) —

  Values to add to the color

Instance Method Details

#child ⇒ Gsk::RenderNode

Gets the child node that is getting its colors modified by the given node.

Returns:

• (Gsk::RenderNode) —

  The child that is getting its colors modified

#color_matrix ⇒ Graphene::Matrix

Retrieves the color matrix used by the node.

Returns:

• (Graphene::Matrix) —

  a 4x4 color matrix

#color_offset ⇒ Graphene::Vec4

Retrieves the color offset used by the node.

Returns:

• (Graphene::Vec4) —

  a color vector