From 711043c7ca9bd675133e9bb1c1a3ec05c83cbeba Mon Sep 17 00:00:00 2001
From: "Johan B. C. Engelen" <jbc.engelen@swissonline.ch>
Date: Sat, 10 May 2008 20:20:11 +0000
Subject: update to latest 2geom. this adds gsl dependency, doesn't seem to
 make inskape executable bigger

(bzr r5649)
---
 src/2geom/transforms.cpp | 51 ++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

(limited to 'src/2geom/transforms.cpp')

diff --git a/src/2geom/transforms.cpp b/src/2geom/transforms.cpp
index bdb6bcad3..0a27c31f6 100644
--- a/src/2geom/transforms.cpp
+++ b/src/2geom/transforms.cpp
@@ -45,6 +45,57 @@ Matrix operator*(Matrix const &m, Scale const &s) {
     return ret;
 }
 
+Translate pow(Translate const &t, int n) {
+    return Translate(t[0]*n, t[1]*n);
+}
+
+Coord pow(Coord x, long n) // shamelessly lifted from WP
+{
+    Coord result = 1;
+    while ( n ) {
+        if ( n & 1 ) {
+            result = result * x;
+            n = n-1;
+        }
+        x = x*x;
+        n = n/2;
+    }
+    return result;
+}
+Scale pow(Scale const &s, int n) {
+    return Scale(pow(s[0],n), pow(s[1],n));
+
+}
+
+Rotate pow(Rotate x, long n)
+{
+    Rotate result(0,1); // identity
+    while ( n ) {
+        if ( n & 1 ) {
+            result = result * x;
+            n = n-1;
+        }
+        x = x*x;
+        n = n/2;
+    }
+    return result;
+}
+
+Matrix pow(Matrix x, long n)
+{
+    Matrix result;
+    result.setIdentity();
+    while ( n ) {
+        if ( n & 1 ) {
+            result = result * x;
+            n = n-1;
+        }
+        x = x*x;
+        n = n/2;
+    }
+    return result;
+}
+
 }
 
 /*
-- 
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