Class Name: HSV Colour

Superclass - <Colour Data>

Subclasses

Definition

An instance of this DRM class contains the actual Hue, Saturation, and Value data values for a colour defined within the Hue Saturation Value (HSV) colour model.

See SE_HSV Data's documentation for a discussion of the field values of an HSV colour.

Primary Page in DRM Diagram:

• 14

Secondary Pages in DRM Diagram:

Example

1. A <HSV Colour> for pure black (Value = 0.0, Hue and Saturation values don't matter)

2. A <HSV Colour> for a bright red (Hue = 0.0, Saturation = 1.0, Value = 1.0)

FAQs

I use RGB, not HSV. How do I get RGB from an HSV transmittal?

This is very easy to do. The mathematical transformation is a bit involved, but the SEDRIS API will do it for you, if you ask nicely. After opening the transmittal, before you retrieve any <Colour Data>, (or, if you want, even before you open the transmittal) call the SE_SetColourModel() function, like so:
"SE_SetColourModel( SE_CLR_MDL_RGB);",
and for the rest of the execution of that program, you will never get back a <HSV Colour> instance. Each <Colour Data> instance you retrieve from that point on will be an <RGB Colour> instance.

Where can I find more information on colour in SEDRIS?

See Part 4, Volume 8 Images and Colour Models Technical Guide of the SEDRIS Documentation Set for further information.

Constraints

Composed of (two-way)

• zero or one <HSV Colour Control Link> instance

Component of (two-way)(inherited)

• zero or more <Ambient Colour> instances
• zero or more <Diffuse Colour> instances
• zero or more <Emissive Colour> instances
• zero or more <Specular Colour> instances

Inherited Field Elements

Field Elements