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ExPolygon::XS->rotate()

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This commit is contained in:
Alessandro Ranellucci
2013-07-11 18:55:51 +02:00
parent 1506907212
commit 87a5de193d
7 changed files with 86 additions and 19 deletions
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12
xs/src/Point.hpp
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@@ -8,14 +8,26 @@ extern "C" {
#include "ppport.h"
}
#include <math.h>
class Point
{
public:
unsigned long x;
unsigned long y;
Point(unsigned long _x = 0, unsigned long _y = 0): x(_x), y(_y) {};
void rotate(double angle, Point* center);
};
void
Point::rotate(double angle, Point* center)
{
double cur_x = (double)x;
double cur_y = (double)y;
x = (unsigned long)( (double)center->x + cos(angle) * (cur_x - (double)center->x) - sin(angle) * (cur_y - (double)center->y) );
y = (unsigned long)( (double)center->y + cos(angle) * (cur_y - (double)center->y) + sin(angle) * (cur_x - (double)center->x) );
}
SV*
point2perl(Point& point) {
AV* av = newAV();