mirror of
https://git.dev.opencascade.org/repos/occt.git
synced 2025-06-20 11:54:07 +03:00
112 lines
4.0 KiB
Plaintext
Executable File
112 lines
4.0 KiB
Plaintext
Executable File
-- Created on: 1993-01-11
|
|
-- Created by: CKY / Contract Toubro-Larsen ( Niraj RANGWALA )
|
|
-- Copyright (c) 1993-1999 Matra Datavision
|
|
-- Copyright (c) 1999-2012 OPEN CASCADE SAS
|
|
--
|
|
-- The content of this file is subject to the Open CASCADE Technology Public
|
|
-- License Version 6.5 (the "License"). You may not use the content of this file
|
|
-- except in compliance with the License. Please obtain a copy of the License
|
|
-- at http://www.opencascade.org and read it completely before using this file.
|
|
--
|
|
-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
|
|
-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
|
|
--
|
|
-- The Original Code and all software distributed under the License is
|
|
-- distributed on an "AS IS" basis, without warranty of any kind, and the
|
|
-- Initial Developer hereby disclaims all such warranties, including without
|
|
-- limitation, any warranties of merchantability, fitness for a particular
|
|
-- purpose or non-infringement. Please see the License for the specific terms
|
|
-- and conditions governing the rights and limitations under the License.
|
|
|
|
|
|
class Color from IGESGraph inherits ColorEntity
|
|
|
|
---Purpose : defines IGESColor, Type <314> Form <0>
|
|
-- in package IGESGraph
|
|
--
|
|
-- The Color Definition Entity is used to communicate the
|
|
-- relationship of primary colors to the intensity level of
|
|
-- the respective graphics devices as a percent of full
|
|
-- intensity range.
|
|
|
|
uses
|
|
|
|
IGESEntity from IGESData,
|
|
HAsciiString from TCollection
|
|
|
|
is
|
|
|
|
Create returns mutable Color;
|
|
|
|
-- Specific Methods pertaining to class
|
|
|
|
Init (me : mutable;
|
|
red : Real;
|
|
green : Real;
|
|
blue : Real;
|
|
aColorName : HAsciiString);
|
|
---Purpose : This method is used to set the fields of the class Color
|
|
-- - red : Red color intensity (range 0.0 to 100.0)
|
|
-- - green : Green color intensity (range 0.0 to 100.0)
|
|
-- - blue : Blue color intensity (range 0.0 to 100.0)
|
|
-- - aColorName : Name of the color (optional)
|
|
|
|
RGBIntensity (me; Red, Green, Blue : out Real);
|
|
-- returns the RGB intensities in the Red, Green, Blue
|
|
-- fields respectively
|
|
|
|
CMYIntensity (me; Cyan, Magenta, Yellow : out Real);
|
|
-- returns the CMY equivalents of RGB intensities.
|
|
--
|
|
-- The algorithm used for getting CMY from RGB is :
|
|
--
|
|
-- C = 100.0 - R where : R = red C = cyan
|
|
-- G = 100.0 - M G = green M = magenta
|
|
-- B = 100.0 - Y B = blue Y = yellow
|
|
--
|
|
|
|
HLSPercentage (me; Hue, Lightness, Saturation : out Real);
|
|
-- returns the HLS equivalents of RGB intensities.
|
|
--
|
|
-- The algorithm used for getting HLS from RGB is :
|
|
--
|
|
-- H = (1/(2*PI))*ARCTAN((2*R - G - B) / (SQUAREROOT(3)*(G - B)))
|
|
-- L = (1 / 3)*(R + G + B)
|
|
-- S = SQUAREROOT(R*R + G*G + B*B - R*G - R*B - B*G)
|
|
--
|
|
-- where H = Hue, L = Lightness, S = Saturation,
|
|
-- PI = 3.14... (constant)
|
|
--
|
|
|
|
HasColorName (me) returns Boolean;
|
|
---Purpose : returns True if optional character string is assigned,
|
|
-- False otherwise.
|
|
|
|
ColorName (me) returns HAsciiString from TCollection;
|
|
---Purpose : if HasColorName() is True returns the Verbal description of
|
|
-- the Color.
|
|
|
|
fields
|
|
|
|
--
|
|
-- Class : IGESGraph_Color
|
|
--
|
|
-- Purpose : Declaration of the variables specific to Color
|
|
--
|
|
-- Reminder : A Color is defined by :
|
|
-- - Red color intensity
|
|
-- - Green color intensity
|
|
-- - Blue color intensity
|
|
-- - Optional name of the color
|
|
--
|
|
|
|
theRed : Real;
|
|
|
|
theGreen : Real;
|
|
|
|
theBlue : Real;
|
|
|
|
theColorName : HAsciiString;
|
|
|
|
end Color;
|