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Made some changes specefict to 4 channel images. Fixed step value for tptr

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This commit is contained in:
Nisarg Thakkar 2014-10-07 16:36:22 +05:30
parent a77a2f357c
commit 474897ff01
1 changed files with 88 additions and 5 deletions
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93
modules/core/src/drawing.cpp
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@ -239,7 +239,7 @@ Line( Mat& img, Point pt1, Point pt2,
{
if( connectivity == 0 )
connectivity = 8;
if( connectivity == 1 )
else if( connectivity == 1 )
connectivity = 4;
LineIterator iterator(img, pt1, pt2, connectivity, true);
@ -288,14 +288,14 @@ LineAA( Mat& img, Point pt1, Point pt2, const void* color )
int x_step, y_step;
int i, j;
int ep_table[9];
int cb = ((uchar*)color)[0], cg = ((uchar*)color)[1], cr = ((uchar*)color)[2];
int _cb, _cg, _cr;
int cb = ((uchar*)color)[0], cg = ((uchar*)color)[1], cr = ((uchar*)color)[2], ca = ((uchar*)color)[3];
int _cb, _cg, _cr, _ca;
int nch = img.channels();
uchar* ptr = img.data;
size_t step = img.step;
Size size = img.size();
if( !((nch == 1 || nch == 3) && img.depth() == CV_8U) )
if( !((nch == 1 || nch == 3 || nch == 4) && img.depth() == CV_8U) )
{
Line(img, pt1, pt2, color);
return;
@ -468,7 +468,7 @@ LineAA( Mat& img, Point pt1, Point pt2, const void* color )
}
#undef ICV_PUT_POINT
}
else
else if (nch == 1)
{
#define ICV_PUT_POINT() \
{ \
@ -543,6 +543,89 @@ LineAA( Mat& img, Point pt1, Point pt2, const void* color )
}
#undef ICV_PUT_POINT
}
else
{
#define ICV_PUT_POINT() \
{ \
_cb = tptr[0]; \
_cb += ((cb - _cb)*a + 127)>> 8;\
_cg = tptr[1]; \
_cg += ((cg - _cg)*a + 127)>> 8;\
_cr = tptr[2]; \
_cr += ((cr - _cr)*a + 127)>> 8;\
_ca = tptr[3]; \
_ca += ((ca - _ca)*a + 127)>> 8;\
tptr[0] = (uchar)_cb; \
tptr[1] = (uchar)_cg; \
tptr[2] = (uchar)_cr; \
tptr[3] = (uchar)_ca; \
}
if( ax > ay )
{
ptr += (pt1.x >> XY_SHIFT) * 4;
while( ecount >= 0 )
{
uchar *tptr = ptr + ((pt1.y >> XY_SHIFT) - 1) * step;
int ep_corr = ep_table[(((scount >= 2) + 1) & (scount | 2)) * 3 +
(((ecount >= 2) + 1) & (ecount | 2))];
int a, dist = (pt1.y >> (XY_SHIFT - 5)) & 31;
a = (ep_corr * FilterTable[dist + 32] >> 8) & 0xff;
ICV_PUT_POINT();
ICV_PUT_POINT();
tptr += step;
a = (ep_corr * FilterTable[dist] >> 8) & 0xff;
ICV_PUT_POINT();
ICV_PUT_POINT();
tptr += step;
a = (ep_corr * FilterTable[63 - dist] >> 8) & 0xff;
ICV_PUT_POINT();
ICV_PUT_POINT();
pt1.y += y_step;
ptr += 4;
scount++;
ecount--;
}
}
else
{
ptr += (pt1.y >> XY_SHIFT) * step;
while( ecount >= 0 )
{
uchar *tptr = ptr + ((pt1.x >> XY_SHIFT) - 1) * 4;
int ep_corr = ep_table[(((scount >= 2) + 1) & (scount | 2)) * 3 +
(((ecount >= 2) + 1) & (ecount | 2))];
int a, dist = (pt1.x >> (XY_SHIFT - 5)) & 31;
a = (ep_corr * FilterTable[dist + 32] >> 8) & 0xff;
ICV_PUT_POINT();
ICV_PUT_POINT();
tptr += step;
a = (ep_corr * FilterTable[dist] >> 8) & 0xff;
ICV_PUT_POINT();
ICV_PUT_POINT();
tptr += step;
a = (ep_corr * FilterTable[63 - dist] >> 8) & 0xff;
ICV_PUT_POINT();
ICV_PUT_POINT();
pt1.x += x_step;
ptr += step;
scount++;
ecount--;
}
}
#undef ICV_PUT_POINT
}
}