5 files changed, 35 insertions, 34 deletions

diff --git a/Makefile b/Makefile
index 94a8553..1704814 100644
--- a/Makefile
+++ b/Makefile
@@ -2,7 +2,7 @@ CC = g++
 CFLAGS = -Wall -pedantic
 LDFLAGS = -ltbb -lglut -lGLU -lGL
 
-balls: balls.o collision.o point.o vec.o partition.o
+balls: balls.o collision.o point.o vec.o partition.o rand.o
 	${CC} -o $@ $^ ${LDFLAGS}
 	@echo done
 
@@ -10,4 +10,4 @@ balls: balls.o collision.o point.o vec.o partition.o
 	${CC} -c ${CFLAGS} $<
 
 clean:
-	rm -f ./*.o balls
\ No newline at end of file
+	rm -f ./*.o balls
diff --git a/balls.cpp b/balls.cpp
index 2c8172f..b3f245d 100644
--- a/balls.cpp
+++ b/balls.cpp
@@ -35,7 +35,6 @@ vector<Point> noOverlapCircles(unsigned int n);
 double mass(double radius);
 double volume(double radius);
 void animate(int v);
-Color randColor(void);
 
 const static Rectangle bounds = {{-1.5, -1.0}, {1.5, 1.0}};
 
@@ -217,28 +216,3 @@ animate(int v) {
 	display();
 	glutTimerFunc(FRAME_TIME_MS, animate, 0);
 }
-
-double
-randDouble(double lo, double hi) {
-	double r, diff;
-	static int isInitialized = 0;
-
-	if (!isInitialized) { /* first call */
-		srand(time(0));
-		isInitialized = 1;
-	}
-
-	r = (double) rand() / (double) RAND_MAX;
-	diff = hi - lo;
-	return lo + r*diff;
-}
-
-Color
-randColor(void) {
-	Color color;
-
-	color.r = randDouble(0, 1);
-	color.g = randDouble(0, 1);
-	color.b = randDouble(0, 1);
-	return color;
-}
diff --git a/balls.h b/balls.h
index 27bffde..4d070c9 100644
--- a/balls.h
+++ b/balls.h
@@ -63,7 +63,6 @@ Point ptMulS(Point p, double s);
 Point ptDivS(Point p, double s);
 Point Pt(double x, double y);
 Rectangle insetRect(Rectangle r, double n);
-Point randPtInRect(Rectangle r);
 
 Vector addVec(Vector v1, Vector v2);
 Vector subVec(Vector v1, Vector v2);
@@ -80,3 +79,5 @@ void collideWall(Ball *b, Rectangle wall);
 void collideBall(Ball *b1, Ball *b2);
 
 double randDouble(double lo, double hi);
+Color randColor(void);
+Point randPtInRect(Rectangle r);
diff --git a/point.cpp b/point.cpp
index 099165d..7d73b31 100644
--- a/point.cpp
+++ b/point.cpp
@@ -56,8 +56,3 @@ insetRect(Rectangle r, double n) {
 	r.max.y -= n;
 	return r;
 }
-
-Point
-randPtInRect(Rectangle r) {
-	return Pt(randDouble(r.min.x, r.max.x), randDouble(r.min.y, r.max.y));
-}
diff --git a/rand.cpp b/rand.cpp
new file mode 100644
index 0000000..7a327ee
--- /dev/null
+++ b/rand.cpp
@@ -0,0 +1,31 @@
+#include "balls.h"
+
+double
+randDouble(double lo, double hi) {
+	double r, diff;
+	static int isInitialized = 0;
+
+	if (!isInitialized) { /* first call */
+		srand(time(0));
+		isInitialized = 1;
+	}
+
+	r = (double) rand() / (double) RAND_MAX;
+	diff = hi - lo;
+	return lo + r*diff;
+}
+
+Color
+randColor(void) {
+	Color color;
+
+	color.r = randDouble(0, 1);
+	color.g = randDouble(0, 1);
+	color.b = randDouble(0, 1);
+	return color;
+}
+
+Point
+randPtInRect(Rectangle r) {
+	return Pt(randDouble(r.min.x, r.max.x), randDouble(r.min.y, r.max.y));
+}