From 1b218145fd156da280a5ac11194fda886c39e6aa Mon Sep 17 00:00:00 2001
From: Adrian Mariano <avm4@cornell.edu>
Date: Sat, 4 Feb 2023 18:37:08 -0500
Subject: [PATCH] a few more examples

---
 skin.scad | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/skin.scad b/skin.scad
index 0ffabeb..6a65645 100644
--- a/skin.scad
+++ b/skin.scad
@@ -2841,6 +2841,18 @@ function associate_vertices(polygons, split, curpoly=0) =
 //       rect(50), texture=tex, h=40,
 //       tex_size=[12.5,20]
 //   );
+// Example(3D): "tri_grid" texture with large inset.  (Max inset for tri_grid is 1/6.)  
+//   tex = texture("tri_grid",inset=.12);
+//   linear_sweep(
+//       rect(50), texture=tex, h=40,
+//       tex_size=[12.5,20]
+//   );
+// Example(3D): "tri_grid" texture scaled by sqrt(3) so triangles are equilateral and grooves are all the same width.  Note we have to ensure the height evenly fits the scaled texture tiles.
+//   tex = texture("tri_grid",inset=.04);
+//   linear_sweep(
+//       rect(50), texture=tex, h=quantup(40,10*sqrt(3)),
+//       tex_size=[10,10*sqrt(3)], tex_scale=3
+//   );
 // Example(3D): "hex_grid" texture.
 //   tex = texture("hex_grid");
 //   linear_sweep(
@@ -2853,6 +2865,12 @@ function associate_vertices(polygons, split, curpoly=0) =
 //       rect(50), texture=tex, h=40,
 //       tex_size=[12.5,20]
 //   );
+// Example(3D): "hex_grid" scaled vertically by sqrt(3) so hexagons are regular and grooves are all the same width.  Note height of cylinder is also scaled so tile fits without being automatically adjusted to fit, ruining our choice of scale.
+//   tex = texture("hex_grid",inset=.04);
+//   linear_sweep(
+//       rect(50), texture=tex, h=quantup(40,10*sqrt(3)),
+//       tex_size=[10,10*sqrt(3)], tex_scale=3
+//   );
 // Example(3D): "checkers" texture.
 //   tex = texture("checkers");
 //   linear_sweep(