From 275666459ee8493f7a471c456f87b7bb06096732 Mon Sep 17 00:00:00 2001
From: Stewart Allen <stewart.allen@gmail.com>
Date: Wed, 20 Apr 2022 19:35:57 -0400
Subject: [PATCH] add boolean intersect

---
 src/mesh/api.js   | 22 +++++++++++++++++++---
 src/mesh/build.js |  1 +
 src/mesh/work.js  |  7 +++++++
 3 files changed, 27 insertions(+), 3 deletions(-)

diff --git a/src/mesh/api.js b/src/mesh/api.js
index dcd36a46..e5e21ac8 100644
--- a/src/mesh/api.js
+++ b/src/mesh/api.js
@@ -79,7 +79,7 @@ const selection = {
             // if model, remove selcted group
             if (selected.contains(object.group)) {
                 selection.remove(object.group);
-                tools.remove(objec.group);
+                tools.remove(object.group);
             }
         }
         selected.addOnce(object);
@@ -369,7 +369,7 @@ const tool = {
         }))
         .then(data => {
             let group = api.group.new([new mesh.model({
-                file: `unioned`,
+                file: `union`,
                 mesh: data
             })]).promote();
             api.selection.set([group]);
@@ -377,6 +377,22 @@ const tool = {
         });
     },
 
+    intersect(models) {
+        models = fallback(models);
+        api.log.emit(`intersect ${models.length} model(s)`).pin();
+        worker.model_intersect(models.map(m => {
+            return { id: m.id, matrix: m.matrix }
+        }))
+        .then(data => {
+            let group = api.group.new([new mesh.model({
+                file: `intersect`,
+                mesh: data
+            })]).promote();
+            api.selection.set([group]);
+            api.log.emit('intersect complete').unpin();
+        });
+    },
+
     subtract(models) {
         models = fallback(models);
         api.log.emit(`subtract ${models.length} model(s)`).pin();
@@ -385,7 +401,7 @@ const tool = {
         }))
         .then(data => {
             let group = api.group.new([new mesh.model({
-                file: `subtracted`,
+                file: `subtract`,
                 mesh: data
             })]).promote();
             api.selection.set([group]);
diff --git a/src/mesh/build.js b/src/mesh/build.js
index 96ad9b50..f83a685e 100644
--- a/src/mesh/build.js
+++ b/src/mesh/build.js
@@ -382,6 +382,7 @@ function ui_build() {
             h.div({ _: "bool", class: "head" }),
             h.button({ _: 'union', onclick: tool.union }),
             h.button({ _: 'subtract', onclick: tool.subtract }),
+            h.button({ _: 'intersect', onclick: tool.intersect }),
         ]),
         h.div([
             h.div({ _: "normal", class: "head" }),
diff --git a/src/mesh/work.js b/src/mesh/work.js
index 926f2f81..0fdc44a7 100644
--- a/src/mesh/work.js
+++ b/src/mesh/work.js
@@ -150,6 +150,13 @@ let model = {
         return base.CSG.toPositionArray(union);
     },
 
+    intersect(recs) {
+        let arrays = recs.map(rec => translate_encode(rec.id, rec.matrix));
+        let solids = arrays.map(a => base.CSG.fromPositionArray(a));
+        let union = base.CSG.intersect(...solids);
+        return base.CSG.toPositionArray(union);
+    },
+
     subtract(recs) {
         let bases = recs.filter(rec => !rec.tool)
             .map(rec => translate_encode(rec.id, rec.matrix))