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103 lines
4.2 KiB
Plaintext
Executable File
103 lines
4.2 KiB
Plaintext
Executable File
-- Created on: 1993-07-27
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-- Created by: Jean Louis FRENKEL
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-- Copyright (c) 1993-1999 Matra Datavision
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-- Copyright (c) 1999-2012 OPEN CASCADE SAS
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--
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-- The content of this file is subject to the Open CASCADE Technology Public
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-- License Version 6.5 (the "License"). You may not use the content of this file
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-- except in compliance with the License. Please obtain a copy of the License
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-- at http://www.opencascade.org and read it completely before using this file.
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--
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-- The Initial Developer of the Original Code is Open CASCADE S.A.S., having its
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-- main offices at: 1, place des Freres Montgolfier, 78280 Guyancourt, France.
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--
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-- The Original Code and all software distributed under the License is
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-- distributed on an "AS IS" basis, without warranty of any kind, and the
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-- Initial Developer hereby disclaims all such warranties, including without
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-- limitation, any warranties of merchantability, fitness for a particular
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-- purpose or non-infringement. Please see the License for the specific terms
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-- and conditions governing the rights and limitations under the License.
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class PixelInterpolation from Image
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---Purpose: The class PixelInterpolation is used to compute a Pixel
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-- value on non-integer Image coordinate. This Pixel type
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-- is called SubPixel .
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-- PixelInterpolation is the default and is the simplest one,
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-- SubPixel value on non-integer Image coordinate is the
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-- value of the nearest Pixel at integer coordinate.
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-- The user can create a new kind of PixelInterpolation with a
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-- new algorithm by creating a new derived PixelInterpolation
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-- class and redefined Interpolate() method.
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-- If V1 is the value of the nearest Image Pixel
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-- V = V1 is the Image SubPixel value on non-integer
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-- coordinate (FX,FY)
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uses
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Pixel from Aspect,
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Image from Image,
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ColorPixel from Aspect,
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IndexPixel from Aspect,
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DColorImage from Image,
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DIndexedImage from Image
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is
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Create returns PixelInterpolation from Image ;
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---Level: Public
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---Purpose: Create a PixelInterpolation object.
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Interpolate( me ; aImage : Image from Image ;
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X,Y : Real from Standard ;
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LowerX,LowerY,UpperX,UpperY : Integer from Standard ;
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RetPixel : in out Pixel from Aspect )
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returns Boolean from Standard
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is virtual ;
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---Level: Public
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---Purpose: Compute SubPixel's value on non-integer Image coordinate.
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-- LowerX,LowerY,UpperX,UpperY is the Image Min Max, it's used
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-- to check if the SubPixel coordinate X,Y is outside of image.
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-- Return True if Interpolation Succes.
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-- Retrun False if the SubPixel is out from Image.
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Interpolate( me ; aImage : DColorImage from Image ;
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FX,FY : Real from Standard ;
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LowerX,LowerY,UpperX,UpperY : Integer from Standard ;
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RetPixel : in out ColorPixel from Aspect )
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returns Boolean from Standard
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is virtual ;
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---Level: Public
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---Purpose: Compute SubPixel's value on non-integer Image coordinate for
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-- DColorImage and ColorPixel.
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-- LowerX,LowerY,UpperX,UpperY is the Image Min Max, it's used
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-- to check if the SubPixel coordinate FX,FY is outside of
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-- image.
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-- Return True if Interpolation Succes.
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-- Return False if the SubPixel is out from Image.
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Interpolate( me ; aImage : DIndexedImage from Image ;
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FX,FY : Real from Standard ;
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LowerX,LowerY,UpperX,UpperY : Integer from Standard ;
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RetPixel : in out IndexPixel from Aspect )
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returns Boolean from Standard
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is virtual ;
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---Level: Public
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---Purpose: Compute SubPixel's value on non-integer Image coordinate for
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-- DIndexedImage and IndexPixel.
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-- LowerX,LowerY,UpperX,UpperY is the Image Min Max, it's use
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-- check if the SubPixel coordinate X,Y is outside of image.
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-- Return True if Interpolation Succes.
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-- Return False if the SubPixel is out from Image.
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DoInterpolate( me ; aImage : Image from Image ;
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X,Y : Real from Standard ;
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LowerX,LowerY,UpperX,UpperY: Integer from Standard ;
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RetPixel : in out Pixel from Aspect )
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returns Boolean from Standard is static private ;
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end PixelInterpolation from Image;
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