From 6e6bb2a3aae6a3e8b58ba91eed380e062fa8616f Mon Sep 17 00:00:00 2001
From: merijn <mail+fork@merijnvanmoll.nl>
Date: Tue, 5 Jan 2021 12:18:56 +0100
Subject: [PATCH] added restrict_cursor.py and hexagon.html testpage

---
 hexagon.html       | 53 ++++++++++++++++++++++++++++++++
 restrict_cursor.py | 76 ++++++++++++++++++++++++++++++++++++++++++++++
 2 files changed, 129 insertions(+)
 create mode 100644 hexagon.html
 create mode 100644 restrict_cursor.py

diff --git a/hexagon.html b/hexagon.html
new file mode 100644
index 0000000..f530e69
--- /dev/null
+++ b/hexagon.html
@@ -0,0 +1,53 @@
+<style>
+    *{
+       background: #555;
+    }
+</style>
+
+
+
+
+
+<svg height="1000" width="1000" id="svg">
+    
+</svg>
+
+
+
+<script>
+
+// remember to put browser on full-screen
+
+    // define hexagon params here
+    let center_X = 400,
+        center_Y = 300,
+        radius = 200;
+
+    let hexa = hexa_vertices(center_X, center_Y, radius);
+    
+    let svg = document.getElementById('svg');
+    let hexagon = document.createElementNS('http://www.w3.org/2000/svg','polygon');
+        hexagon.setAttribute("points", 
+            `${hexa[0].x},${hexa[0].y} 
+             ${hexa[1].x},${hexa[1].y} 
+             ${hexa[2].x},${hexa[2].y} 
+             ${hexa[3].x},${hexa[3].y} 
+             ${hexa[4].x},${hexa[4].y} 
+             ${hexa[5].x},${hexa[5].y} 
+            `);
+        hexagon.style="fill: #e5e5e5";
+    svg.append(hexagon)
+
+
+
+    function hexa_vertices(cX, cY, r){
+        let verts = [];
+            verts[0] = {x: cX+r*Math.cos(0), y: cY+r*Math.sin(0)};
+        for(let i=1; i<=6; i++){
+            verts[i] = {x: cX+r*Math.cos(i*2*Math.PI/6), y: cY+r*Math.sin(i*2*Math.PI/6)};
+        }
+        return verts;
+    }
+
+
+</script>
diff --git a/restrict_cursor.py b/restrict_cursor.py
new file mode 100644
index 0000000..2f3fd6f
--- /dev/null
+++ b/restrict_cursor.py
@@ -0,0 +1,76 @@
+import math
+from pynput import mouse
+from pynput.mouse import Button, Controller
+
+
+
+ct = Controller()
+
+# mouse position
+start_pos = (500, 200)
+ct.position = start_pos
+
+# displacement margin (px)
+d_margin = 2
+
+# hexagon parameters
+centerX=400
+centerY=300
+radius=200
+
+
+
+def hexa_points(cx, cy, r):
+    points=[None]*6
+    points[0]=(cx+r*math.cos(0), cy+r*math.sin(0))
+    for i in range(1,6):
+        points[i]=(  int(cx+r*math.cos(i*2*math.pi/6)), int(cy+r*math.sin(i*2*math.pi/6)) )
+    return points
+
+
+hexagon = hexa_points(centerX, centerY, radius)
+# print(hexagon)
+
+
+def update_position(p, pi, pj):
+    relative=(pj[0]-pi[0], pj[1]-pi[1])
+    normal=(relative[1],-relative[0])
+    magnitude=math.sqrt((normal[0]*normal[0])+(normal[1]*normal[1]))
+    normal_unit=(normal[0]/magnitude, normal[1]/magnitude)
+    displacement=((p[0]-pi[0])*normal_unit[0])+((p[1]-pi[1])*normal_unit[1])
+    # print(displacement)
+    if (displacement > d_margin):
+        return ( int(p[0]-normal_unit[0]*displacement), int(p[1]-normal_unit[1]*displacement) )
+    else:
+        return False
+
+
+def keep_in_hexagon(point, hexagon):
+    for i in range(0,6):
+        j=i+1
+        if j==6:
+            j=0
+        # print("point: "+str(point)+" pi: "+str(hexagon[i])+" pj: "+str(hexagon[j]))
+        updated_point=update_position(point, hexagon[i], hexagon[j])
+        if updated_point:
+            print("[OOB] "+str(point)+' => '+str(updated_point))
+            ct.position = updated_point
+
+
+def on_move(x, y):
+    keep_in_hexagon((x, y), hexagon)
+
+
+# click to stop listening
+def on_click(x, y, button, pressed):
+    print('{0} at {1}'.format(
+        'Pressed' if pressed else 'Released',
+        (x, y)))
+    if not pressed:
+        return False
+
+
+with mouse.Listener(
+        on_move=on_move,
+        on_click=on_click) as listener:
+     listener.join()