Table of Contents

Class FunctionBasedShading

Namespace
UglyToad.PdfPig.Graphics.Colors
Assembly
UglyToad.PdfPig.dll

Function-based shadings (type 1) define the colour of every point in the domain using a mathematical function (not necessarily smooth or continuous).

public sealed class FunctionBasedShading : Shading
Inheritance
FunctionBasedShading
Inherited Members

Constructors

FunctionBasedShading(bool, DictionaryToken, ColorSpaceDetails, PdfRectangle?, double[], double[], TransformationMatrix, PdfFunction[])

Create a new FunctionBasedShading.

public FunctionBasedShading(bool antiAlias, DictionaryToken shadingDictionary, ColorSpaceDetails colorSpace, PdfRectangle? bbox, double[] background, double[] domain, TransformationMatrix matrix, PdfFunction[] functions)

Parameters

antiAlias bool
shadingDictionary DictionaryToken
colorSpace ColorSpaceDetails
bbox PdfRectangle?
background double[]
domain double[]
matrix TransformationMatrix
functions PdfFunction[]

Properties

Domain

(Optional) An array of four numbers [xmin xmax ymin ymax] specifying the rectangular domain of coordinates over which the colour function(s) are defined.

Default value: [0.0 1.0 0.0 1.0]. 

public double[] Domain { get; }

Property Value

double[]

Functions

(Required) A 2-in, n-out function or an array of n 2-in, 1-out functions (where n is the number of colour components in the shading dictionary's colour space). Each function's domain shall be a superset of that of the shading dictionary. If the value returned by the function for a given colour component is out of range, it shall be adjusted to the nearest valid value.

public override PdfFunction[] Functions { get; }

Property Value

PdfFunction[]

Matrix

(Optional) An array of six numbers specifying a transformation matrix mapping the coordinate space specified by the Domain entry into the shading's target coordinate space.

Default value: the identity matrix [1 0 0 1 0 0]. 

public TransformationMatrix Matrix { get; }

Property Value

TransformationMatrix