Misc/abrash-black-book
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Change HTML4 entities to HTML5

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&lt to <
&gt to >
&amp to &
This commit is contained in:
James Gregory 2013-12-30 14:33:39 +11:00
commit b8e7ce7165
105 changed files with 1117 additions and 1117 deletions
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39-05.html
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@ -43,11 +43,11 @@
; point at (X2,Y2). If SkipFirst == 1, the point at (X1,Y1) isn’t
; drawn; if SkipFirst == 0, it is. For each scan line, the pixel
; closest to the scanned edge without being to the left of the scanned
; edge is chosen. Uses an all-integer approach for speed &amp precision.
; edge is chosen. Uses an all-integer approach for speed & precision.
; C near-callable as:
; void ScanEdge(int X1, int Y1, int X2, int Y2, int SetXStart,
; int SkipFirst, struct HLine **EdgePointPtr);
; Edges must not go bottom to top; that is, Y1 must be &lt= Y2.
; Edges must not go bottom to top; that is, Y1 must be <= Y2.
; Updates the pointer pointed to by EdgePointPtr to point to the next
; free entry in the array of HLine structures.
@ -57,7 +57,7 @@ XEnd dw ? ;X coordinate of rightmost pixel in scan line
HLine ends
Parms struc
dw 2 dup(?) ;return address &amp pushed BP
dw 2 dup(?) ;return address & pushed BP
X1 dw ? ;X start coord of edge
Y1 dw ? ;Y start coord of edge
X2 dw ? ;X end coord of edge
@ -96,7 +96,7 @@ _ScanEdge proc
HLinePtrSet:
mov bx,[bp+Y2]
sub bx,[bp+Y1] ;edge height
jle ToScanEdgeExit ;guard against 0-length &amp horz edges
jle ToScanEdgeExit ;guard against 0-length & horz edges
mov [bp+Height],bx ;Height = Y2 - Y1
sub cx,cx ;assume ErrorTerm starts at 0 (true if
; we’re moving right as we draw)
@ -104,8 +104,8 @@ HLinePtrSet:
mov ax,[bp+X2]
sub ax,[bp+X1] ;DeltaX = X2 - X1
jz IsVertical ;it’s a vertical edge--special case it
jns SetAdvanceAmt ;DeltaX &gt= 0
mov cx,1 ;DeltaX &lt 0 (move left as we draw)
jns SetAdvanceAmt ;DeltaX >= 0
mov cx,1 ;DeltaX < 0 (move left as we draw)
sub cx,bx ;ErrorTerm = -Height + 1
neg dx ;AdvanceAmt = -1 (move left)
neg ax ;Width = abs(DeltaX)