diff --git a/src/draw.c b/src/draw.c
index eccc755..93fcc5e 100644
--- a/src/draw.c
+++ b/src/draw.c
@@ -24,9 +24,15 @@ void editCanvas(int width, int height)
 
 static char drawPixel(float zBuffer)
 {
-    if (zBuffer < 0.25f) return '.';
-    else if (zBuffer < 0.5f) return '*';
-    else if (zBuffer < 0.75f) return 'o';
+    float zb = (zBuffer + 1.f) * 0.5f;
+    
+    if (zb > 1.f) zb = 1.f;
+    if (zb < 0.f) zb = 0.f;
+
+
+    if (zb < 0.25f) return '.';
+    else if (zb < 0.5f) return '*';
+    else if (zb < 0.75f) return 'o';
     else return '#';
 }
 
@@ -81,6 +87,16 @@ void renderCanvas(int width, int height)
     }
 }
 
+void clearCanvas(int width, int height)
+{
+    printf("\033[2J\033[H");
+    for (int i = 0; i<height; i++) {
+        for (int j = 0; j<width; j++) {
+            canvas[i*width + j] = ' ';
+        }
+    }
+}
+
 void freeCanvas(void)
 {
     free(canvas);
diff --git a/src/draw.h b/src/draw.h
index 4d5ea56..02541f5 100644
--- a/src/draw.h
+++ b/src/draw.h
@@ -8,6 +8,7 @@ void editCanvas(int width, int height);
 void drawCanvas(Vec4f_t p, int width, int height);
 void drawLine(Vec4f_t p0, Vec4f_t p1, int width, int height);
 void renderCanvas(int width, int height);
+void clearCanvas(int width, int height);
 void freeCanvas(void);
 
 #endif // DRAW_H
\ No newline at end of file