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Merge pull request #8936 from terfendail:clipline_fix

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Alexander Alekhin
2017-06-30 10:55:08 +00:00
parent 8bd2e9816a 3d7fd4132b
commit a84a5e8f1a
2 changed files with 30 additions and 5 deletions
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modules/imgproc/src/drawing.cpp
+5 -5
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@@ -111,14 +111,14 @@ bool clipLine( Size2l img_size, Point2l& pt1, Point2l& pt2 )
if( c1 & 12 )
{
a = c1 < 8 ? 0 : bottom;
x1 += (a - y1) * (x2 - x1) / (y2 - y1);
x1 += (int64)((double)(a - y1) * (x2 - x1) / (y2 - y1));
y1 = a;
c1 = (x1 < 0) + (x1 > right) * 2;
}
if( c2 & 12 )
{
a = c2 < 8 ? 0 : bottom;
x2 += (a - y2) * (x2 - x1) / (y2 - y1);
x2 += (int64)((double)(a - y2) * (x2 - x1) / (y2 - y1));
y2 = a;
c2 = (x2 < 0) + (x2 > right) * 2;
}
@@ -127,14 +127,14 @@ bool clipLine( Size2l img_size, Point2l& pt1, Point2l& pt2 )
if( c1 )
{
a = c1 == 1 ? 0 : right;
y1 += (a - x1) * (y2 - y1) / (x2 - x1);
y1 += (int64)((double)(a - x1) * (y2 - y1) / (x2 - x1));
x1 = a;
c1 = 0;
}
if( c2 )
{
a = c2 == 1 ? 0 : right;
y2 += (a - x2) * (y2 - y1) / (x2 - x1);
y2 += (int64)((double)(a - x2) * (y2 - y1) / (x2 - x1));
x2 = a;
c2 = 0;
}
@@ -314,7 +314,7 @@ LineAA( Mat& img, Point2l pt1, Point2l pt2, const void* color )
if( !((nch == 1 || nch == 3 || nch == 4) && img.depth() == CV_8U) )
{
Line(img, Point((int)(pt1.x<<XY_SHIFT), (int)(pt1.y<<XY_SHIFT)), Point((int)(pt2.x<<XY_SHIFT), (int)(pt2.y<<XY_SHIFT)), color);
Line(img, Point((int)(pt1.x>>XY_SHIFT), (int)(pt1.y>>XY_SHIFT)), Point((int)(pt2.x>>XY_SHIFT), (int)(pt2.y>>XY_SHIFT)), color);
return;
}