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Eliminate non-ascii comments in clipper (#5480)

pull/5484/head^2
Bao Anchang 2024-03-04 16:18:08 +08:00 committed by GitHub
parent f95050e7aa
commit bb9101ae9e
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1 changed files with 4 additions and 4 deletions
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contrib/clipper/clipper.cpp
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@ -4330,10 +4330,10 @@ double DistanceFromLineSqrd(
const IntPoint& pt, const IntPoint& ln1, const IntPoint& ln2) const IntPoint& pt, const IntPoint& ln1, const IntPoint& ln2)
{ {
//The equation of a line in general form (Ax + By + C = 0) //The equation of a line in general form (Ax + By + C = 0)
//given 2 points (x<EFBFBD>,y<>) & (x<>,y<>) is ... //given 2 points (x_1, y_1) & (x_2, y_2) is ...
//(y<EFBFBD> - y<>)x + (x<> - x<>)y + (y<> - y<>)x<> - (x<> - x<>)y<> = 0 //(y_1 - y_2)x + (x_2 - x_1)y - (y_1 - y_2)x_1 - (x_2 - x_1)y_1 = 0
//A = (y<EFBFBD> - y<>); B = (x<> - x<>); C = (y<> - y<>)x<> - (x<> - x<>)y<> //A = (y_1 - y_2); B = (x_2 - x_1); C = - (y_1 - y_2)x_1 - (x_2 - x_1)y_1
//perpendicular distance of point (x<EFBFBD>,y<>) = (Ax<41> + By<42> + C)/Sqrt(A<> + B<>) //perpendicular distance of point (x_0, y_0) = |Ax_0 + By_0 + C| / Sqrt(A^2 + B^2)
//see http://en.wikipedia.org/wiki/Perpendicular_distance //see http://en.wikipedia.org/wiki/Perpendicular_distance
double A = double(ln1.Y - ln2.Y); double A = double(ln1.Y - ln2.Y);
double B = double(ln2.X - ln1.X); double B = double(ln2.X - ln1.X);