diff --git a/tinyrender2/render.go b/tinyrender2/render.go
index 41c8dd1..220020b 100644
--- a/tinyrender2/render.go
+++ b/tinyrender2/render.go
@@ -60,15 +60,6 @@ func Triangle1(fb *Framebuffer, color uint, v0 Vec2i, v1 Vec2i, v2 Vec2i) {
 		v1, v2 = v2, v1
 	}
 
-	// The lesson says to always figure out what's on the left.
-	// As such, we always go from left to right
-	// While drawing the straight line, go the opposite direction if the
-	// longer side is on the right (we go from long side to short)
-	var sweep int = 1
-	if v2.X > v1.X {
-		sweep = -1
-	}
-
 	// Don't worry about speed for now...
 	dy := float32(v2.Y-v0.Y) - 0.5
 	var v02step, v01step, v12step, xlong, xshort float32
@@ -88,8 +79,13 @@ func Triangle1(fb *Framebuffer, color uint, v0 Vec2i, v1 Vec2i, v2 Vec2i) {
 	}
 
 	for y := v0.Y; y <= v2.Y; y++ {
-		// Draw a horizontal line from
-		for x := int(math.Floor(float64(xlong))); x <= int(math.Floor(float64(xshort))); x += sweep {
+		xleft := int(math.Floor(float64(xshort)))
+		xright := int(math.Floor(float64(xlong)))
+		if xleft > xright {
+			xleft, xright = xright, xleft
+		}
+		// Draw a horizontal line from elft to right
+		for x := xleft; x <= xright; x++ {
 			fb.SetSafe(uint(x), uint(y), color)
 		}
 		xlong += v02step