(no commit message)

diff --git a/scene.c b/scene.c
index cc96c00..caa7f19 100644 (file)
--- a/scene.c
+++ b/scene.c
@@ -602,13 +602,16 @@ void drawSquare(int recurseLevel, GLfloat x1, GLfloat y1, GLfloat x2, GLfloat y2
   printf("Recurse level %d\n", recurseLevel);\r
 \r
   if ( drawFloorRecurse != recurseLevel ) {\r
-    GLfloat xm = (x2 - x1) / 2.0;\r
-    if ( x1 > x2 ) {\r
-      xm = (x1 - x2) / 2.0;\r
-    }\r
-\r
-    drawSquare(recurseLevel + 1, x1, y1, xm, y2);\r
-    drawSquare(recurseLevel + 1, xm, y1, x2, y2);\r
+    GLfloat xm = (x1 + x2) / 2.0;\r
+    GLfloat ym = (y1 + y2) / 2.0;\r
+    int rnew = recurseLevel + 1;\r
+\r
+    // Split into four sub-quads\r
+    drawSquare(rnew, x1, y1, xm, ym);\r
+    drawSquare(rnew, x1, ym, xm, y2);\r
+    drawSquare(rnew, xm, ym, x2, y2);\r
+    drawSquare(rnew, xm, y1, x2, ym);\r
+    \r
   } else {\r
     printf("Drawing (%f, %f) -> (%f, %f)\n", x1, y2, x2, y2);\r
     glBegin(GL_QUADS);\r