From 83f814d42b7c26f8fe9358315fbd7f5d979761be Mon Sep 17 00:00:00 2001
From: Stewart Allen <sa@grid.space>
Date: Sun, 30 Jan 2022 14:14:00 -0500
Subject: [PATCH] preserve doubleside on flats, frontside on solids

---
 src/kiri-mode/fdm/slice.js |  2 +-
 src/kiri-mode/sla/slice.js |  6 +++---
 src/kiri/stack.js          | 12 ++++++------
 3 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/src/kiri-mode/fdm/slice.js b/src/kiri-mode/fdm/slice.js
index ef4ab83e..8bc4014a 100644
--- a/src/kiri-mode/fdm/slice.js
+++ b/src/kiri-mode/fdm/slice.js
@@ -170,7 +170,7 @@
             Object.values(COLOR).forEach(color => {
                 color.flat = true;
                 color.line = 1
-                color.opacity = 0.5;
+                color.opacity = 1;
             });
         } else {
             Object.keys(COLOR).forEach(key => {
diff --git a/src/kiri-mode/sla/slice.js b/src/kiri-mode/sla/slice.js
index f71bc7a2..195276ed 100644
--- a/src/kiri-mode/sla/slice.js
+++ b/src/kiri-mode/sla/slice.js
@@ -232,14 +232,14 @@
                 slice.unioned.forEach(poly => {
                     poly = poly.clone(true);//.move(widget.track.pos);
                     render
-                        .setLayer("layers", { line: 0x010101, face: 0x0099cc, opacity: 0.2 })
+                        .setLayer("layers", { line: 0x010101, face: 0x0099cc, opacity: 0.4 })
                         .addAreas([poly], { outline: true });
                 });
             } else if (slice.tops) {
                 slice.tops.forEach(top => {
                     let poly = top.poly;//.clone(true).move(widget.track.pos);
                     render
-                        .setLayer("layers", { line: 0x010101, face: 0xfcba03, opacity: 0.2 })
+                        .setLayer("layers", { line: 0x010101, face: 0xfcba03, opacity: 0.4 })
                         .addAreas([poly], { outline: true });
                 });
             }
@@ -247,7 +247,7 @@
             if (slice.supports) {
                 slice.supports.forEach(poly => {
                     render
-                        .setLayer("support", { line: 0x010101, face: 0xfcba03, opacity: 0.2 })
+                        .setLayer("support", { line: 0x010101, face: 0xfcba03, opacity: 0.4 })
                         .addAreas([poly], { outline: true });
                 });
             }
diff --git a/src/kiri/stack.js b/src/kiri/stack.js
index e6dcde31..3c8a8035 100644
--- a/src/kiri/stack.js
+++ b/src/kiri/stack.js
@@ -151,9 +151,9 @@
             if (faces.length) {
                 const mat = [];
                 if (cface) {
-                    cface.forEach(c => { mat.push(newMat(c)) });
+                    cface.forEach(c => { mat.push(newMat(c, true)) });
                 } else {
-                    mat.push(newMat(color));
+                    mat.push(newMat(color, true));
                 }
                 mat.forEach(m => m.visible = defstate);
                 const geo = new THREE.BufferGeometry();
@@ -236,7 +236,7 @@
         return mat;
     }
 
-    function createStandardMaterial(color) {
+    function createStandardMaterial(color, flat) {
         return new THREE.MeshStandardMaterial({
             emissive,
             roughness,
@@ -244,18 +244,18 @@
             transparent: color.opacity != 1,
             opacity: color.opacity || 1,
             color: color.face,
-            side: THREE.FrontSide
+            side: flat ? THREE.DoubleSide : THREE.FrontSide
         });
     }
 
-    function createPhongMaterial(color) {
+    function createPhongMaterial(color, flat) {
         return new THREE.MeshPhongMaterial({
             shininess,
             specular,
             transparent: color.opacity != 1,
             opacity: color.opacity || 1,
             color: color.face,
-            side: THREE.FrontSide
+            side: flat ? THREE.DoubleSide : THREE.FrontSide
         });
     }