moving trunk for module inkscape

(bzr r1)

1 files changed, 159 insertions, 0 deletions

diff --git a/src/libnr/nr-point.h b/src/libnr/nr-point.h
new file mode 100644
index 000000000..f67a66800
--- /dev/null
+++ b/src/libnr/nr-point.h
@@ -0,0 +1,159 @@
+#ifndef SEEN_NR_POINT_H
+#define SEEN_NR_POINT_H
+
+/** \file
+ * Cartesian point class.
+ */
+
+//#include <math.h>
+//#include <stdexcept>
+#include <iostream>
+//#include <iomanip>
+
+#include <libnr/nr-coord.h>
+#include <libnr/nr-dim2.h>
+
+//#include "round.h"
+#include "decimal-round.h"
+
+/// A NRPoint consists of x and y coodinates.
+/// \todo
+/// This class appears to be obsoleted out in favour of NR::Point.
+struct NRPoint {
+    NR::Coord x, y;
+};
+
+namespace NR {
+
+class Matrix;
+
+/// Cartesian point.
+class Point {
+public:
+    inline Point()
+    { _pt[X] = _pt[Y] = 0; }
+
+    inline Point(Coord x, Coord y) {
+        _pt[X] = x;
+        _pt[Y] = y;
+    }
+
+    inline Point(NRPoint const &p) {
+        _pt[X] = p.x;
+        _pt[Y] = p.y;
+    }
+
+    inline Point(Point const &p) {
+        for (unsigned i = 0; i < 2; ++i) {
+            _pt[i] = p._pt[i];
+        }
+    }
+
+    inline Point &operator=(Point const &p) {
+        for (unsigned i = 0; i < 2; ++i) {
+            _pt[i] = p._pt[i];
+        }
+        return *this;
+    }
+
+    inline Coord operator[](unsigned i) const {
+        return _pt[i];
+    }
+
+    inline Coord &operator[](unsigned i) {
+        return _pt[i];
+    }
+
+    Coord operator[](Dim2 d) const throw() { return _pt[d]; }
+    Coord &operator[](Dim2 d) throw() { return _pt[d]; }
+
+    /** Return a point like this point but rotated -90 degrees.
+        (If the y axis grows downwards and the x axis grows to the
+        right, then this is 90 degrees counter-clockwise.)
+    **/
+    Point ccw() const {
+        return Point(_pt[Y], -_pt[X]);
+    }
+
+    /** Return a point like this point but rotated +90 degrees.
+        (If the y axis grows downwards and the x axis grows to the
+        right, then this is 90 degrees clockwise.)
+    **/
+    Point cw() const {
+        return Point(-_pt[Y], _pt[X]);
+    }
+
+    /**
+        \brief A function to lower the precision of the point
+        \param  places  The number of decimal places that should be in
+                        the final number.
+    */
+    inline void round (int places = 0) {
+        _pt[X] = (Coord)(Inkscape::decimal_round((double)_pt[X], places));
+        _pt[Y] = (Coord)(Inkscape::decimal_round((double)_pt[Y], places));
+        return;
+    }
+
+    void normalize();
+
+    inline Point &operator+=(Point const &o) {
+        for ( unsigned i = 0 ; i < 2 ; ++i ) {
+            _pt[i] += o._pt[i];
+        }
+        return *this;
+    }
+  
+    inline Point &operator-=(Point const &o) {
+        for ( unsigned i = 0 ; i < 2 ; ++i ) {
+            _pt[i] -= o._pt[i];
+        }
+        return *this;
+    }
+  
+    inline Point &operator/=(double const s) {
+        for ( unsigned i = 0 ; i < 2 ; ++i ) {
+            _pt[i] /= s;
+        }
+        return *this;
+    }
+
+    inline Point &operator*=(double const s) {
+        for ( unsigned i = 0 ; i < 2 ; ++i ) {
+            _pt[i] *= s;
+        }
+        return *this;
+    }
+
+    Point &operator*=(Matrix const &m);
+
+    inline int operator == (const Point &in_pnt) {
+        return ((_pt[X] == in_pnt[X]) && (_pt[Y] == in_pnt[Y]));
+    }
+
+    friend inline std::ostream &operator<< (std::ostream &out_file, const NR::Point &in_pnt);
+
+private:
+    Coord _pt[2];
+};
+
+/** A function to print out the Point.  It just prints out the coords
+    on the given output stream */
+inline std::ostream &operator<< (std::ostream &out_file, const NR::Point &in_pnt) {
+    out_file << "X: " << in_pnt[X] << "  Y: " << in_pnt[Y];
+    return out_file;
+}
+
+} /* namespace NR */
+
+#endif /* !SEEN_NR_POINT_H */
+
+/*
+  Local Variables:
+  mode:c++
+  c-file-style:"stroustrup"
+  c-file-offsets:((innamespace . 0)(inline-open . 0)(case-label . +))
+  indent-tabs-mode:nil
+  fill-column:99
+  End:
+*/
+// vim: filetype=cpp:expandtab:shiftwidth=4:tabstop=8:softtabstop=4:encoding=utf-8:textwidth=99 :