From 058a656d13530cb1886dada4ef9a3ea3d3251e4a Mon Sep 17 00:00:00 2001
From: Ruben van de Ven <git@rubenvandeven.com>
Date: Tue, 22 Sep 2020 09:11:45 +0200
Subject: [PATCH] Some more helper functions

---
 dist/static/assets/webcam.js | 67 +++++++++++++++++++++++-------------
 1 file changed, 44 insertions(+), 23 deletions(-)

diff --git a/dist/static/assets/webcam.js b/dist/static/assets/webcam.js
index b679c30b..9dfcec94 100644
--- a/dist/static/assets/webcam.js
+++ b/dist/static/assets/webcam.js
@@ -219,20 +219,20 @@ function drawPart(feature, closed) {
 
 }
 
-/**
- * Wrapper around p5.js color class
- * @param {*} c color, either as array, or string (css name or HEX string)
- */
-function getColor(c) {
-    if(!Array.isArray(c)) c = [c];
-    return new p5.Color(p5.instance, c);
-}
+// /**
+//  * Wrapper around p5.js color class
+//  * @param {*} c color, either as array, or string (css name or HEX string)
+//  */
+// function getColor(c) {
+//     if(!Array.isArray(c)) c = [c];
+//     return new p5.Color(p5.instance, c);
+// }
 
-var colors = {
-    red: getColor('red'),
-    blue: getColor('blue'),
-    green: getColor('green'),
-};
+// var colors = {
+//     red: getColor('red'),
+//     blue: getColor('blue'),
+//     green: getColor('green'),
+// };
 
 function faceDistance(face1, face2){
     // distance between faces, in pixels, not meters.. for now
@@ -259,16 +259,39 @@ function faceDistance(face1, face2){
     return Math.sqrt( Math.pow(dx, 2) + Math.pow(dy, 2) ) - r1 - r2;
 }
 
+function mergePoints() {
+    // a points should be {x: , y: }
+
+    // collect all points in the arguments:
+    let points = [];
+    
+    for(let arg of arguments) {
+        if(Array.isArray(arg)) {
+            points.push(...arg);
+        } else {
+            points.push(arg);
+        }
+    }
+    return points;
+}
+
 function getBoundingBox(){
     // arguments contains points,  or sets of points. Find bbox
-    console.log(arguments)
     
-    // return {
-    //     top: 
-    //     left:
-    //     width:
-    //     height:
-    // }
+    const points = mergePoints(...arguments);
+
+    const xs = points.map((point) => point.x);
+    const ys = points.map((point) => point.y);
+
+    const minx = Math.min(...xs);
+    const miny = Math.min(...ys);
+
+    return {
+        x: minx,
+        y: miny,
+        width: Math.max(...xs) - minx,
+        height: Math.max(...ys) - miny,
+    }
 }
 
 function parseDetectionResults(results) {
@@ -277,6 +300,7 @@ function parseDetectionResults(results) {
         const landmarks = result.landmarks._positions.map((pos) => parseCoordinate(pos));
         let detection = {
             'landmarks': landmarks,
+            // TODO: rotation
             'parts': {},
             'box': {
                 x: result.alignedRect._box._x * factor_x,
@@ -292,9 +316,6 @@ function parseDetectionResults(results) {
     }
 
     return detections;
-    // result.parts
-    // result.alignedRect._box
-    // factor_x, factor_y
 }
 
 /**