From 64374d0ce953904a0ab3ddbcd54aca6dcba9cbda Mon Sep 17 00:00:00 2001
From: Nikita Kostovsky <nikita@kostovsky.me>
Date: Thu, 8 Jan 2026 20:57:13 +0100
Subject: visualize 3d range

---
 body/body.scad | 54 ++++++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 52 insertions(+), 2 deletions(-)

diff --git a/body/body.scad b/body/body.scad
index 0edfb3f..6414cde 100644
--- a/body/body.scad
+++ b/body/body.scad
@@ -75,11 +75,61 @@ module visualize_xz_range()
         [$actualXEndMm / 2, farZ],]);
 }
 
+module visualize_range()
+{
+    lenseY = $lenseYPosMm;
+    zBase = $actualZBaseMm + $wawt;
+    // TODO: use `zEnd` name instead of `farZ`?
+    farZ = zBase + $actualZRangeMm;
+    xs = $actualXStartMm;
+    xe = $actualXEndMm;
+    
+    // lense center
+    lc = [0, 0, lenseY];
+    // x start left
+    xsl = [-xs / 2, zBase, 0];
+    xsr = [xs / 2, zBase, 0];
+    xel = [-xe / 2, farZ, 0];
+    xer = [xe / 2, farZ, 0];
+    //        0   1    2    3    4
+    points = [lc, xsl, xsr, xel, xer];
+    
+    // front (top?) face
+    // ff = [lc, xel, xer];
+    ff = [0, 3, 4];
+    // right face
+    // rf = [xer, lc, xsr];
+    rf = [4, 0, 2];
+    // back (ass) face
+    // bkf = [xsr, lc, xsl];
+    bkf = [2, 0, 1];
+    // left face
+    // lf = [xsl, lc, xel];
+    lf = [1, 0, 3];
+    // bottom face
+    // bmf = [xel, xer, xsr, xsl];
+    bmf = [3, 4, 2, 1];
+    
+    faces = [ff, rf, bkf, lf, bmf];
+    //faces = [ff];
+    
+    //polyhedron(points, faces);
+    
+    
+    color("red", 0.3)
+    polyhedron(
+        [lc, xsl, xsr, xel, xer],
+        //[ff, rf, bkf]
+        faces
+    );
+}
+
 cam_and_lense();
 camera_hole();
 laser_hole();
-visualize_yz_range();
-visualize_xz_range();
+//visualize_yz_range();
+//visualize_xz_range();
+visualize_range();
 
 // laser
 translate([0, -$laserZOffsetMm, 0])
-- 
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