Object Model Reference : Classes : C : Color : Methods : Color.ConvertToYIQ
|
|
| Object Model Reference : Classes : C : Color : Methods : Color.ConvertToYIQ |
Sub ConvertToYIQ()
Member of Color
The ConvertToYIQ method converts the active color model to the YIQ color model in CorelDRAW.
A color is an effect applied to an object that alters the object’s appearance by the way it reflects light. A color model is a system that defines the number and type of colors that make up an image and that is used to organize and define colors according to a set of basic properties that can be reproduced. Black-and-white, grayscale, RGB, CMYK, and paletted are examples of popular color modes.
The YIQ color model is a color model used in television broadcast systems (North American video standard, or NTSC). Colors are split into a luminance value (Y) and two chromaticity values (I and Q). On a color monitor, all three components are visible. On a monochrome monitor, only the Y component is visible. The square, two-dimensional visual selector defines the I and Q values, and the vertical visual selector defines the Y value. All values are scaled from 0 to 255.
The following VBA example converts all uniform fill colors in the selected shapes to the YIQ color model.
Sub Test() |
Dim c As New color |
Dim s As Shape |
For Each s In ActiveSelection.Shapes |
If s.Fill.Type = cdrUniformFill Then |
s.Fill.UniformColor.ConvertToYIQ |
End If |
Next s |
End Sub |
|
|
|
|
Copyright 2013 Corel Corporation. All rights reserved.