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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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18
xs/src/ExPolygon.hpp
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@ -21,6 +21,7 @@ class ExPolygon
SV* arrayref();
void scale(double factor);
void translate(double x, double y);
void _rotate(double angle, Point* center);
};
#define scale_polygon(poly, factor) \
@ -35,6 +36,14 @@ class ExPolygon
(*pit).y += y; \
}
inline void
rotate_polygon(Polygon* poly, double angle, Point* center)
{
for (Polygon::iterator pit = (*poly).begin(); pit != (*poly).end(); ++pit) { \
(*pit).rotate(angle, center);
}
}
void
ExPolygon::scale(double factor)
{
@ -53,6 +62,15 @@ ExPolygon::translate(double x, double y)
}
}
void
ExPolygon::_rotate(double angle, Point* center)
{
rotate_polygon(&contour, angle, center);
for (Polygons::iterator it = holes.begin(); it != holes.end(); ++it) {
rotate_polygon(&*it, angle, center);
}
}
void
perl2polygon(SV* poly_sv, Polygon& poly)
{

12
xs/src/Point.hpp
View file

@ -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();