fabs
/
rotate-me-fast
1
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

Add TPoint operators +=, -=, *=, /=

master
Fabien Freling 2014-07-24 00:40:27 +02:00
parent e7802e30fd
commit e804d9b5ca
2 changed files with 31 additions and 6 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
image.h
View File

@ -29,6 +29,34 @@ struct TPoint {
: x(a)
, y(b)
{}
TPoint& operator+=(TPoint const& rhs)
{
x += rhs.x;
y += rhs.y;
return *this;
}
TPoint& operator-=(TPoint const& rhs)
{
x -= rhs.x;
y -= rhs.y;
return *this;
}
TPoint& operator*=(TPoint const& rhs)
{
x *= rhs.x;
y *= rhs.y;
return *this;
}
TPoint& operator/=(TPoint const& rhs)
{
x /= rhs.x;
y /= rhs.y;
return *this;
}
};
typedef TPoint<int> Point;

9
rotation.cpp
View File

@ -234,10 +234,8 @@ Image* rotate(Image const& src, double angle)
DPoint const src_origin = get_mapped_point(*rotated, Point(0, 0), -rotation);
DPoint src_delta_x = get_mapped_point(*rotated, Point(src.width - 1, 0), -rotation);
DPoint src_delta_y = get_mapped_point(*rotated, Point(0, src.height - 1), -rotation);
src_delta_x.x = src_delta_x.x - src_origin.x;
src_delta_x.y = src_delta_x.y - src_origin.y;
src_delta_y.x = src_delta_y.x - src_origin.x;
src_delta_y.y = src_delta_y.y - src_origin.y;
src_delta_x -= src_origin;
src_delta_y -= src_origin;
// Quantized delta
unsigned int const q_pow = 4;
@ -273,8 +271,7 @@ Image* rotate(Image const& src, double angle)
q_pow, q);
}
src_rotated_point.x += qdx.x;
src_rotated_point.y += qdx.y;
src_rotated_point += qdx;
buffer_index += rotated->pixel_size;
}