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gdi32: Move LineDDA to objects.c. 

Signed-off-by: Jacek Caban <jacek@codeweavers.com>
Signed-off-by: Huw Davies <huw@codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard@winehq.org>
This commit is contained in:
Jacek Caban 2021-09-02 14:12:24 +02:00 committed by Alexandre Julliard
parent 568143ff97
commit 66fd792c4d
2 changed files with 58 additions and 58 deletions
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58
dlls/gdi32/objects.c
View File

@ -1001,3 +1001,61 @@ BOOL WINAPI CombineTransform( XFORM *result, const XFORM *xform1, const XFORM *x
*result = r;
return TRUE;
}
/***********************************************************************
* LineDDA (GDI32.@)
*/
BOOL WINAPI LineDDA( INT x_start, INT y_start, INT x_end, INT y_end,
LINEDDAPROC callback, LPARAM lparam )
{
INT xadd = 1, yadd = 1;
INT err,erradd;
INT cnt;
INT dx = x_end - x_start;
INT dy = y_end - y_start;
TRACE( "(%d, %d), (%d, %d), %p, %lx\n", x_start, y_start,
x_end, y_end, callback, lparam );
if (dx < 0)
{
dx = -dx;
xadd = -1;
}
if (dy < 0)
{
dy = -dy;
yadd = -1;
}
if (dx > dy) /* line is "more horizontal" */
{
err = 2*dy - dx; erradd = 2*dy - 2*dx;
for(cnt = 0;cnt < dx; cnt++)
{
callback( x_start, y_start, lparam );
if (err > 0)
{
y_start += yadd;
err += erradd;
}
else err += 2*dy;
x_start += xadd;
}
}
else /* line is "more vertical" */
{
err = 2*dx - dy; erradd = 2*dx - 2*dy;
for(cnt = 0; cnt < dy; cnt++)
{
callback( x_start, y_start, lparam );
if (err > 0)
{
x_start += xadd;
err += erradd;
}
else err += 2*dx;
y_start += yadd;
}
}
return TRUE;
}

58
dlls/gdi32/painting.c
View File

@ -664,64 +664,6 @@ BOOL WINAPI NtGdiPolyDraw( HDC hdc, const POINT *points, const BYTE *types, DWOR
}
/**********************************************************************
* LineDDA (GDI32.@)
*/
BOOL WINAPI LineDDA(INT nXStart, INT nYStart, INT nXEnd, INT nYEnd,
LINEDDAPROC callback, LPARAM lParam )
{
INT xadd = 1, yadd = 1;
INT err,erradd;
INT cnt;
INT dx = nXEnd - nXStart;
INT dy = nYEnd - nYStart;
TRACE( "(%d, %d), (%d, %d), %p, %lx\n", nXStart, nYStart, nXEnd, nYEnd, callback, lParam );
if (dx < 0)
{
dx = -dx;
xadd = -1;
}
if (dy < 0)
{
dy = -dy;
yadd = -1;
}
if (dx > dy) /* line is "more horizontal" */
{
err = 2*dy - dx; erradd = 2*dy - 2*dx;
for(cnt = 0;cnt < dx; cnt++)
{
callback(nXStart,nYStart,lParam);
if (err > 0)
{
nYStart += yadd;
err += erradd;
}
else err += 2*dy;
nXStart += xadd;
}
}
else /* line is "more vertical" */
{
err = 2*dx - dy; erradd = 2*dx - 2*dy;
for(cnt = 0;cnt < dy; cnt++)
{
callback(nXStart,nYStart,lParam);
if (err > 0)
{
nXStart += xadd;
err += erradd;
}
else err += 2*dx;
nYStart += yadd;
}
}
return TRUE;
}
/******************************************************************
*
* *Very* simple bezier drawing code,