1 files changed, 24 insertions, 1 deletions
diff --git a/body/laser.scad b/body/laser.scad
index 2b8cab9..b4dc8aa 100644
--- a/body/laser.scad
+++ b/body/laser.scad
@@ -1,3 +1,4 @@
+include <design.scad>
 include <helpers.scad>
 
 default_laser_d = 14;
@@ -11,4 +12,26 @@ module laser_body(d = default_laser_d, l = default_laser_l)
     rotate([-90, 0, 0])
     translate([0, 0, -l])
     cylinder($fn = diameterToFn(d), d = d, h = l);
-}
-\ No newline at end of file
+    
+    // visible ray
+    zBase = $actualZBaseMm;
+    farZ = zBase + $actualZRangeMm;
+    
+    // non-valid
+    color("red", 0.15)
+    *polygon(
+        [[0, 0],
+        [$actualXStartMm / 2, zBase],
+        [-$actualXStartMm / 2, zBase]]);
+
+    // non-valid, should ignore laser pos
+    // TODO: visualize laser beam
+    color("red", 0.3)
+    *polygon(
+        [[$actualXStartMm / 2, zBase],
+        [-$actualXStartMm / 2, zBase],
+        [-$actualXEndMm / 2, farZ],
+        [$actualXEndMm / 2, farZ],]);
+}
+
+*laser_body();
+\ No newline at end of file