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BfxColourThresholdPixelOpPseudo Class Reference

Pixel operator. More...

#include <bfxpixop.h>

Inheritance diagram for BfxColourThresholdPixelOpPseudo:

BfxPixelOpPseudo 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 (BfxColourThresholdPixelOpPseudo)

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 509 of file bfxpixop.h.

Member Function Documentation

BfxColourThresholdPixelOpPseudo::CC_DECLARE_DYNCREATE (  BfxColourThresholdPixelOpPseudo   )  [private]
 

BOOL BfxColourThresholdPixelOpPseudo::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:
BfxPixelOpPseudo::IsInRegion()
The region calculation is done as ( ((B-T)^2 >= Value ) && ((Colour-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 961 of file bfxpixop.cpp.

00962 {
00963 //  DWORD Pixel = (x+y*WidthRounded)>>XShift;
00964 //  DWORD shift = x & XMask;
00965     DWORD tval=__bfx_pseudopixel(pT,x,y);
00966     return (__bfx_pseudopixel(pB,x,y) != tval) && (Colour == tval);
00967 }

The documentation for this class was generated from the following files:
Generated on Sat Nov 10 03:51:08 2007 for Camelot by  doxygen 1.4.4