From a60e8a8eabde116cc3da920b637bc4f6f5b8b17c Mon Sep 17 00:00:00 2001
From: Alex AUVOLAT <alex.auvolat@ens.fr>
Date: Thu, 5 Dec 2013 22:21:11 +0100
Subject: Added tests.

---
 tests/exec/bresenham.cpp | 26 ++++++++++++++++++++++++++
 1 file changed, 26 insertions(+)
 create mode 100644 tests/exec/bresenham.cpp

(limited to 'tests/exec/bresenham.cpp')

diff --git a/tests/exec/bresenham.cpp b/tests/exec/bresenham.cpp
new file mode 100644
index 0000000..c92c13f
--- /dev/null
+++ b/tests/exec/bresenham.cpp
@@ -0,0 +1,26 @@
+#include <iostream>
+
+void plot(int y) {
+  while (y-- > 0) std::cout << " ";
+  std::cout << "X\n";
+}
+
+// suppose 0 <= y2 <= x2 (premier octant)
+void bresenham(int x2, int y2) {
+  int x = 0;
+  int y = 0;
+  int e = 2 * y2 - x2;
+  for (x = 0; x <= x2; x++) {
+    plot (y);
+    if (e < 0)
+      e = e + 2* y2;
+    else {
+      y++;
+      e = e + 2 * (y2 - x2);
+    }
+  }
+}
+
+int main() {
+  bresenham(10, 6);
+}
-- 
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