cleanup

git-svn-id: http://svn.code.sf.net/p/netpbm/code/trunk@4638 9d0c8265-081b-0410-96cb-a4ca84ce46f8

1 files changed, 46 insertions, 7 deletions

diff --git a/converter/other/pamtosvg/point.c b/converter/other/pamtosvg/point.c
index 6a9ffafa..94502d83 100644
--- a/converter/other/pamtosvg/point.c
+++ b/converter/other/pamtosvg/point.c
@@ -4,12 +4,21 @@
 
 #include "point.h"
 
-float_coord
-makePoint(float const x,
-          float const y,
-          float const z) {
 
-    float_coord retval;
+
+/* Operations on points with real coordinates.  It is not orthogonal,
+   but more convenient, to have the subtraction operator return a
+   vector, and the addition operator return a point.
+*/
+
+
+
+Point
+point_make(float const x,
+           float const y,
+           float const z) {
+
+    Point retval;
 
     retval.x = x;
     retval.y = y;
@@ -21,8 +30,8 @@ makePoint(float const x,
 
 
 bool
-pointsEqual(float_coord const comparand,
-            float_coord const comparator) {
+point_equal(Point const comparand,
+            Point const comparator) {
 
     return
         epsilon_equal(comparand.x, comparator.x)
@@ -35,3 +44,33 @@ pointsEqual(float_coord const comparand,
 
 
 
+Point
+point_sum(Point const coord1,
+          Point const coord2) {
+
+    Point retval;
+
+    retval.x = coord1.x + coord2.x;
+    retval.y = coord1.y + coord2.y;
+    retval.z = coord1.z + coord2.z;
+
+    return retval;
+}
+
+
+
+Point
+point_scaled(Point const coord,
+             float const r) {
+
+    Point retval;
+
+    retval.x = coord.x * r;
+    retval.y = coord.y * r;
+    retval.z = coord.z * r;
+
+    return retval;
+}
+
+
+