From e3cc8717e6933cfcddc9174e0570e6941460e01e Mon Sep 17 00:00:00 2001
From: Jason Dekarske <dekarskej@gmail.com>
Date: Sat, 2 Apr 2022 22:23:48 -0700
Subject: [PATCH] emulator mvp course parsed and displayed!

---
 apps/golfview/ChangeLog        |   1 +
 apps/golfview/README.md        |  21 ++++++
 apps/golfview/golfview-icon.js |   1 +
 apps/golfview/golfview.js      |  51 +++++++++++++++
 apps/golfview/golfview.png     | Bin 0 -> 22517 bytes
 apps/golfview/index.html       | 114 +++++++++++++++++++++++++++++++++
 apps/golfview/maptools.js      |  59 +++++++++++++++++
 apps/golfview/metadata.json    |  14 ++++
 8 files changed, 261 insertions(+)
 create mode 100644 apps/golfview/ChangeLog
 create mode 100644 apps/golfview/README.md
 create mode 100644 apps/golfview/golfview-icon.js
 create mode 100644 apps/golfview/golfview.js
 create mode 100644 apps/golfview/golfview.png
 create mode 100644 apps/golfview/index.html
 create mode 100644 apps/golfview/maptools.js
 create mode 100644 apps/golfview/metadata.json

diff --git a/apps/golfview/ChangeLog b/apps/golfview/ChangeLog
new file mode 100644
index 000000000..b243db101
--- /dev/null
+++ b/apps/golfview/ChangeLog
@@ -0,0 +1 @@
+0.01: New App! Very limited course support.
diff --git a/apps/golfview/README.md b/apps/golfview/README.md
new file mode 100644
index 000000000..56d90782d
--- /dev/null
+++ b/apps/golfview/README.md
@@ -0,0 +1,21 @@
+# App Name
+
+Describe the app...
+
+Add screen shots (if possible) to the app folder and link then into this file with ![](<name>.png)
+
+## Usage
+
+Select your course of interest upon loading this app.
+
+## Contributions
+
+The performance of this app depends on the accuracy and consistency of user-submitted maps. Please contribute to Open Street Map using these guidelines and provide input in ways to support this application.
+
+## Controls
+
+Swipe to change holes and tap to see a green closeup.
+
+## Requests/Creator
+
+[Jason Dekarske](https://github.com/jdekarske)
\ No newline at end of file
diff --git a/apps/golfview/golfview-icon.js b/apps/golfview/golfview-icon.js
new file mode 100644
index 000000000..83b180e4c
--- /dev/null
+++ b/apps/golfview/golfview-icon.js
@@ -0,0 +1 @@
+require("heatshrink").decompress(atob("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"))
diff --git a/apps/golfview/golfview.js b/apps/golfview/golfview.js
new file mode 100644
index 000000000..93d70e31c
--- /dev/null
+++ b/apps/golfview/golfview.js
@@ -0,0 +1,51 @@
+let course = require("Storage").readJSON("course_data_hole1.json");
+
+console.log(Object.keys(course));
+
+g.clear();
+
+for (var feature of course.features) {
+  //console.log(Object.keys(feature));
+  if (feature.type === "fairway"){
+    g.setColor(0,0,1);
+  } else if ( feature.type === "tee"){
+    g.setColor(1,0,0);
+  } else if (feature.type === "green"){
+    g.setColor(0,1,0);
+  } else if (feature.type === "bunker"){
+    g.setColor(1,1,0);
+  } else {
+    continue;
+  }
+  
+  var nodelist = [];
+  feature.nodesXY.forEach(function (node) {
+    nodelist.push(node.x);
+    nodelist.push(node.y);
+  });
+  newnodelist = g.transformVertices(nodelist,{
+    x: 150, // x offset (default 0)
+    y: 150, // y offset (default 0)
+    scale: 0.45, // scale factor (default 1)
+    rotate: course.angle - 1.57, // angle in radians (default 0)
+  });
+  
+  g.fillPoly(newnodelist, true);
+  console.log(feature.type);
+  console.log(nodelist);
+}
+
+var nodelist = [];
+course.nodesXY.forEach(function (node) {
+  nodelist.push(node.x);
+  nodelist.push(node.y);
+});
+
+newnodelist = g.transformVertices(nodelist,{
+  x: 150, // x offset (default 0)
+  y: 150, // y offset (default 0)
+  scale: 0.45, // scale factor (default 1)
+  rotate: course.angle - 1.57, // angle in radians (default 0)
+});
+g.setColor(0,1,1);
+g.drawPoly(newnodelist);
\ No newline at end of file
diff --git a/apps/golfview/golfview.png b/apps/golfview/golfview.png
new file mode 100644
index 0000000000000000000000000000000000000000..2bb61628218690fdd21aeb651f6275a78ca9318d
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diff --git a/apps/golfview/index.html b/apps/golfview/index.html
new file mode 100644
index 000000000..24016ccbd
--- /dev/null
+++ b/apps/golfview/index.html
@@ -0,0 +1,114 @@
+<html>
+
+<head>
+  <link rel="stylesheet" href="../../css/spectre.min.css">
+  <script src="https://code.jquery.com/jquery-3.6.0.min.js"
+    integrity="sha256-/xUj+3OJU5yExlq6GSYGSHk7tPXikynS7ogEvDej/m4=" crossorigin="anonymous"></script>
+</head>
+
+<body>
+
+  <button id="upload" class="btn btn-primary">Upload</button>
+
+  <script src="../../core/lib/customize.js"></script>
+  <script src="./maptools.js"></script>
+
+  <script>
+    const url = "https://overpass-api.de/api/interpreter";
+    let query = `[out:json][timeout:5];relation["name"="Davis Golf Course"];way(r)["golf"="hole"];foreach->.a(.a out;way(around.a:40.0)["golf"];out;>>;out;)`; // this gets everything at least
+    let course_input = null;
+
+    function findNodeCoordinates(elements, id) {
+      for (let i = 0; i < elements.length; i++) {
+        if (elements[i].type === "node" && elements[i].id === id) {
+          let thing = (({ lat, lon }) => ({ lat, lon }))(elements[i]);
+          return thing;
+        }
+      }
+      console.error("node id: ", id, " not found");
+    }
+
+    function processFeatures(course_verbose) {
+      let course_processed = {
+        holes: {}
+      };
+      let current_hole = 0;
+      for (let i = 0; i < course_verbose.length; i++) {
+        const element = course_verbose[i];
+
+        if (element.type === "way") {
+          // if we find a high-level hole feature
+          if (element.tags.golf === "hole") {
+            if (element.tags.ref in course_processed.holes) continue; // the around picks up hole ways that mess everything up
+            current_hole = parseInt(element.tags.ref); //subsequent way features should be applied to the current hole
+            let nodes = [];
+            for (const node_id of element.nodes) {
+              nodes.push(findNodeCoordinates(course_verbose, node_id));
+            }
+            var hole = {
+              hole_number: current_hole,
+              handicap: parseInt(element.tags.handicap),
+              par: parseInt(element.tags.par),
+              nodes: nodes,
+              features: [],
+            }
+
+            course_processed.holes[current_hole.toString()] = hole;
+          }
+
+          // if we find a feature add it to the corresponding hole
+          if (/(green)|(bunker)|(tee)|(teebox)|(fairway)|(water_hazard)/.test(element.tags.golf)) { //TODO missing cartpath
+            let nodes = []
+            for (const node_id of element.nodes) {
+              nodes.push(findNodeCoordinates(course_verbose, node_id));
+            }
+            let new_feature = {
+              nodes: nodes,
+              type: element.tags.golf,
+              id: element.id,
+            }
+            course_processed.holes[current_hole.toString()].features.push(new_feature);
+          }
+        }
+      }
+
+      return course_processed;
+    }
+
+    function preprocessCoords(course_input) {
+      // first do the high-level way
+      for (var hole in course_input.holes) {
+        course_input.holes[hole].nodesXY = arraytoXY(course_input.holes[hole].nodes, course_input.holes[hole].nodes[0])
+        // then do the shapes in the features
+        for (var feature in course_input.holes[hole].features) {
+          course_input.holes[hole].features[feature].nodesXY = arraytoXY(course_input.holes[hole].features[feature].nodes, course_input.holes[hole].nodes[0]);
+        }
+
+        // find out how the hole is angled
+        course_input.holes[hole].angle = angle(course_input.holes[hole].nodesXY[0], course_input.holes[hole].nodesXY[course_input.holes[hole].nodesXY.length - 1])
+      }
+      return course_input;
+    }
+
+    var out = {};
+    // download info from the course
+    $.post(url, query, function (result) {
+      course_input = result;
+      out = processFeatures(course_input.elements);
+      out = preprocessCoords(out);
+      console.log(course_input);
+      console.log(out);
+    })
+
+    // When the 'upload' button is clicked...
+    document.getElementById("upload").addEventListener("click", function () {
+      downloadObjectAsJSON(out.holes["1"], "course_data");
+      sendCustomizedApp({
+        storage: courses
+      });
+    });
+
+  </script>
+</body>
+
+</html>
\ No newline at end of file
diff --git a/apps/golfview/maptools.js b/apps/golfview/maptools.js
new file mode 100644
index 000000000..af05343c8
--- /dev/null
+++ b/apps/golfview/maptools.js
@@ -0,0 +1,59 @@
+const EARTHRADIUS = 6371000; //km
+
+function radians(a) {
+    return a * Math.PI / 180;
+}
+
+function degrees(a) {
+    let d = a * 180 / Math.PI;
+    return (d + 360) % 360;
+}
+
+function toXY(a, origin) {
+    let pt = {
+        x: 0,
+        y: 0
+    };
+
+    pt.x = EARTHRADIUS * radians(a.lon - origin.lon) * Math.cos(radians((a.lat + origin.lat) / 2));
+    pt.y = EARTHRADIUS * radians(origin.lat - a.lat);
+    return pt;
+}
+
+function arraytoXY(array, origin) {
+    let out = [];
+    for (var j in array) {
+        let newpt = toXY(array[j], origin);
+        out.push(newpt);
+    }
+    return out;
+}
+
+function angle(a, b) {
+    let x = b.x - a.x;
+    let y = b.y - a.y;
+    return Math.atan2(-y, x);
+}
+
+function rotateVec(a, theta) {
+    let pt = {
+        x: 0,
+        y: 0
+    };
+    c = Math.cos(theta);
+    s = Math.sin(theta);
+    pt.x = c * a.x - s * a.y;
+    pt.y = s * a.x + c * a.y;
+    return pt;
+}
+
+// https://stackoverflow.com/questions/19721439/download-json-object-as-a-file-from-browser
+function downloadObjectAsJSON(exportObj, exportName) {
+    var dataStr = "data:text/json;charset=utf-8," + encodeURIComponent(JSON.stringify(exportObj));
+    var downloadAnchorNode = document.createElement('a');
+    downloadAnchorNode.setAttribute("href", dataStr);
+    downloadAnchorNode.setAttribute("download", exportName + ".json");
+    document.body.appendChild(downloadAnchorNode); // required for firefox
+    downloadAnchorNode.click();
+    downloadAnchorNode.remove();
+}
\ No newline at end of file
diff --git a/apps/golfview/metadata.json b/apps/golfview/metadata.json
new file mode 100644
index 000000000..bbb221b64
--- /dev/null
+++ b/apps/golfview/metadata.json
@@ -0,0 +1,14 @@
+{ "id": "glfview",
+  "name": "Golf View",
+  "version":"0.01",
+  "description": "This app will provide you with on course data to support your golf game! All information comes from OpenStreetMap. Please contribute by drawing your course using these guidelines: [guidelines](guidelines.com)",
+  "icon": "golfview.png",
+  "tags": "",
+  "supports" : ["BANGLEJS2"],  
+  "readme": "README.md",
+  "custom": "index.html",
+  "storage": [
+    {"name":"glfview.app.js","url":"golfview.js"},
+    {"name":"glfview.img","url":"golfview-icon.js","evaluate":true}
+  ]
+}