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BfxThresholdPixelOp Class Reference

Pixel operator. More...

#include <bfxpixop.h>

Inheritance diagram for BfxThresholdPixelOp:

BfxPixelOp32 BfxPixelOp CCObject SimpleCCObject List of all members.

Protected Member Functions

virtual BOOL IsPixelReallyInRegion (INT32 x, INT32 y)
 To be overriden by derived classes.

Private Member Functions

 CC_DECLARE_DYNCREATE (BfxThresholdPixelOp)

Detailed Description

Pixel operator.

Author:
Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
Date:
12/10/1994
PixelOp that determines whether a pixel is better by more than a given amount in one bitmap than in another

Definition at line 417 of file bfxpixop.h.

Member Function Documentation

BfxThresholdPixelOp::CC_DECLARE_DYNCREATE (  BfxThresholdPixelOp   )  [private]
 

BOOL BfxThresholdPixelOp::IsPixelReallyInRegion (  INT32  x,
INT32  y
)  [protected, virtual]
 

To be overriden by derived classes.

Author:
Alex_Bligh (Xara Group Ltd) <camelotdev@xara.com>
Date:
14/03/95
Parameters:
x,y = coordinates of pixel [INPUTS]
None [OUTPUTS]
Returns:
Whether pixel is in the region or not.

Errors: None Scope: Public

See also:
BfxPixelOp::IsInRegion()
The region calculation is done as ( (B-T)^2 >= Value ) where Colour = the colour to measure against B = pCurrent - the current built up image T = pOriginal - the image to be traced

Reimplemented from BfxPixelOp.

Definition at line 895 of file bfxpixop.cpp.

00896 {
00897     DWORD Pixel = y*Width+x;
00898 
00899     return ( (IntegerSquare( ((INT32)(((AluPix32 *) pB)[Pixel].R)) - ((INT32)(((AluPix32 *) pT)[Pixel].R)))
00900      + IntegerSquare( ((INT32)(((AluPix32 *) pB)[Pixel].G)) - ((INT32)(((AluPix32 *) pT)[Pixel].G)))
00901      + IntegerSquare( ((INT32)(((AluPix32 *) pB)[Pixel].B)) - ((INT32)(((AluPix32 *) pT)[Pixel].B))) ) >= Value );
00902 }

The documentation for this class was generated from the following files:
Generated on Sat Nov 10 03:51:13 2007 for Camelot by  doxygen 1.4.4