{
 "cells": [
  {
   "cell_type": "markdown",
   "metadata": {},
   "source": [
    "# Processing Clock\n",
    "\n",
    "This is running the Calysto Processing kernel. The published (nbviewer) notebook actually contains the running code."
   ]
  },
  {
   "cell_type": "code",
   "execution_count": 1,
   "metadata": {
    "collapsed": false
   },
   "outputs": [
    {
     "data": {
      "application/javascript": [
       "\n",
       "        var component = document.getElementById(\"sketch_1\");\n",
       "        if (component != undefined)\n",
       "            component.remove();\n",
       "        component = document.getElementById(\"state_1\");\n",
       "        if (component != undefined)\n",
       "            component.remove();\n",
       "        component = document.getElementById(\"controls_div_1\");\n",
       "        if (component != undefined)\n",
       "            component.remove();\n",
       "        require([window.location.protocol + \"//calysto.github.io/javascripts/processing/processing.js\"], function() {\n",
       "            // FIXME: Stop all previously running versions (?)\n",
       "            var processingInstance = Processing.getInstanceById(\"canvas_1\");\n",
       "            if (processingInstance != undefined && processingInstance.isRunning())\n",
       "                processingInstance.noLoop();\n",
       "        });\n",
       "        "
      ],
      "text/plain": [
       "<IPython.core.display.Javascript object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    },
    {
     "data": {
      "text/html": [
       "\n",
       "<div id=\"canvas_div_1\">\n",
       "  <b>Sketch #1:</b><br/>\n",
       "  <canvas id=\"canvas_1\"></canvas><br/>\n",
       "</div>\n",
       "<div id=\"controls_div_1\">\n",
       "  <button id=\"run_button_1\" onclick=\"startSketch('1');\">\n",
       "    <i class=\"fa fa-play-circle-o\" style=\"size: 2em;\"></i>\n",
       "        Run\n",
       "  </button>\n",
       "  <button id=\"pause_button_1\" onclick=\"pauseSketch('1');\">\n",
       "    <i class=\"fa fa-pause\" style=\"size: 2em;\"></i>\n",
       "        Pause\n",
       "  </button>\n",
       "  <button id=\"setup_button_1\" onclick=\"setupSketch('1');\">\n",
       "    setup()\n",
       "  </button>\n",
       "  <button id=\"draw_button_1\" onclick=\"drawSketch('1');\">\n",
       "    draw()\n",
       "  </button>\n",
       "</div>\n",
       "<b>Sketch #1 state:</b> <span id=\"state_1\">Loading...</span><br/>\n",
       "<script>\n",
       "\n",
       "function change_button(button, disable) {\n",
       "    button.disabled = disable;\n",
       "    if (disable) {\n",
       "        button.style.color = \"grey\";\n",
       "    } else {\n",
       "        button.style.color = \"black\";\n",
       "    }\n",
       "}\n",
       "\n",
       "function startSketch(id) {\n",
       "    switchSketchState(id, true);\n",
       "}\n",
       "\n",
       "function pauseSketch(id) {\n",
       "    switchSketchState(id, false);\n",
       "}\n",
       "\n",
       "function drawSketch(id) {\n",
       "    var processingInstance = Processing.getInstanceById(\"canvas_\" + id);\n",
       "    if (processingInstance != undefined) {\n",
       "        if (processingInstance.draw != undefined) {\n",
       "            document.getElementById(\"state_\" + id).innerHTML = \"Drawing...\";\n",
       "            try {\n",
       "                processingInstance.redraw();\n",
       "                document.getElementById(\"state_\" + id).innerHTML = \"Drawing... done! Paused.\";\n",
       "                document.getElementById(\"state_\" + id).style.color = \"blue\";\n",
       "            } catch (e) {\n",
       "                processingInstance.println(e.toString());\n",
       "                document.getElementById(\"state_\" + id).innerHTML = e.toString();\n",
       "                document.getElementById(\"state_\" + id).style.color = \"red\";\n",
       "            }\n",
       "        } else {\n",
       "            document.getElementById(\"state_\" + id).innerHTML = \"No drawing() function. Paused.\";\n",
       "            document.getElementById(\"state_\" + id).style.color = \"blue\";\n",
       "        }\n",
       "    } else {\n",
       "        document.getElementById(\"state_\" + id).innerHTML = \"Error.\";\n",
       "        document.getElementById(\"state_\" + id).style.color = \"red\";\n",
       "    }\n",
       "    change_button(document.getElementById(\"run_button_\" + id), processingInstance.draw == undefined);\n",
       "    change_button(document.getElementById(\"pause_button_\" + id), true);\n",
       "    change_button(document.getElementById(\"setup_button_\" + id), processingInstance.setup == undefined);\n",
       "    change_button(document.getElementById(\"draw_button_\" + id), processingInstance.draw == undefined);\n",
       "}\n",
       "\n",
       "function setupSketch(id) {\n",
       "    var processingInstance = Processing.getInstanceById(\"canvas_\" + id);\n",
       "    if (processingInstance != undefined) {\n",
       "        if (processingInstance.setup != undefined) {\n",
       "            document.getElementById(\"state_\" + id).innerHTML = \"Setting up...\";\n",
       "            try {\n",
       "                processingInstance.setup();\n",
       "                document.getElementById(\"state_\" + id).innerHTML = \"Setting up... done! Paused.\";\n",
       "                document.getElementById(\"state_\" + id).style.color = \"blue\";\n",
       "            } catch (e) {\n",
       "                processingInstance.println(e.toString());\n",
       "                document.getElementById(\"state_\" + id).innerHTML = e.toString();\n",
       "                document.getElementById(\"state_\" + id).style.color = \"red\";\n",
       "            }\n",
       "        } else {\n",
       "            document.getElementById(\"state_\" + id).innerHTML = \"No setup() function. Paused.\";\n",
       "            document.getElementById(\"state_\" + id).style.color = \"blue\";\n",
       "        }\n",
       "    } else {\n",
       "        document.getElementById(\"state_\" + id).innerHTML = \"Error.\";\n",
       "        document.getElementById(\"state_\" + id).style.color = \"red\";\n",
       "    }\n",
       "    change_button(document.getElementById(\"run_button_\" + id), processingInstance.draw == undefined);\n",
       "    change_button(document.getElementById(\"pause_button_\" + id), true);\n",
       "    change_button(document.getElementById(\"setup_button_\" + id), processingInstance.setup == undefined);\n",
       "    change_button(document.getElementById(\"draw_button_\" + id), processingInstance.draw == undefined);\n",
       "}\n",
       "\n",
       "function switchSketchState(id, on) {\n",
       "    var processingInstance = Processing.getInstanceById(\"canvas_\" + id);\n",
       "    if (on) {\n",
       "        document.getElementById(\"state_\" + id).innerHTML = \"Running...\";\n",
       "        document.getElementById(\"state_\" + id).style.color = \"green\";\n",
       "        change_button(document.getElementById(\"run_button_\" + id), true);\n",
       "        change_button(document.getElementById(\"pause_button_\" + id), processingInstance.draw == undefined);\n",
       "        change_button(document.getElementById(\"setup_button_\" + id),  true);\n",
       "        change_button(document.getElementById(\"draw_button_\" + id), true);\n",
       "        processingInstance.loop();  // call Processing loop() function\n",
       "    } else {\n",
       "        document.getElementById(\"state_\" + id).innerHTML = \"Paused.\";\n",
       "        document.getElementById(\"state_\" + id).style.color = \"blue\";\n",
       "        change_button(document.getElementById(\"run_button_\" + id), processingInstance.draw == undefined);\n",
       "        change_button(document.getElementById(\"pause_button_\" + id), true);\n",
       "        change_button(document.getElementById(\"setup_button_\" + id), processingInstance.setup == undefined);\n",
       "        change_button(document.getElementById(\"draw_button_\" + id), processingInstance.draw == undefined);\n",
       "        processingInstance.noLoop(); // stop animation, call noLoop()\n",
       "    }\n",
       "}\n",
       "\n",
       "require([window.location.protocol + \"//calysto.github.io/javascripts/processing/processing.js\"], function () {\n",
       "    var processingCode = \"int cx, cy;\\nfloat secondsRadius;\\nfloat minutesRadius;\\nfloat hoursRadius;\\nfloat clockDiameter;\\n\\nvoid setup() {\\n  size(640, 360);\\n  stroke(255);\\n  \\n  int radius = min(width, height) / 2;\\n  secondsRadius = radius * 0.72;\\n  minutesRadius = radius * 0.60;\\n  hoursRadius = radius * 0.50;\\n  clockDiameter = radius * 1.8;\\n  \\n  cx = width / 2;\\n  cy = height / 2;\\n}\\n\\nvoid draw() {\\n  background(0);\\n  \\n  // Draw the clock background\\n  fill(80);\\n  noStroke();\\n  ellipse(cx, cy, clockDiameter, clockDiameter);\\n  \\n  // Angles for sin() and cos() start at 3 o'clock;\\n  // subtract HALF_PI to make them start at the top\\n  float s = map(second(), 0, 60, 0, TWO_PI) - HALF_PI;\\n  float m = map(minute() + norm(second(), 0, 60), 0, 60, 0, TWO_PI) - HALF_PI; \\n  float h = map(hour() + norm(minute(), 0, 60), 0, 24, 0, TWO_PI * 2) - HALF_PI;\\n  \\n  // Draw the hands of the clock\\n  stroke(255);\\n  strokeWeight(1);\\n  line(cx, cy, cx + cos(s) * secondsRadius, cy + sin(s) * secondsRadius);\\n  strokeWeight(2);\\n  line(cx, cy, cx + cos(m) * minutesRadius, cy + sin(m) * minutesRadius);\\n  strokeWeight(4);\\n  line(cx, cy, cx + cos(h) * hoursRadius, cy + sin(h) * hoursRadius);\\n  \\n  // Draw the minute ticks\\n  strokeWeight(2);\\n  beginShape(POINTS);\\n  for (int a = 0; a < 360; a+=6) {\\n    float angle = radians(a);\\n    float x = cx + cos(angle) * secondsRadius;\\n    float y = cy + sin(angle) * secondsRadius;\\n    vertex(x, y);\\n  }\\n  endShape();\\n}\";\n",
       "    var cc;\n",
       "    var processingInstance;\n",
       "    var has_error = false;\n",
       "    try {\n",
       "        cc = Processing.compile(processingCode);\n",
       "    } catch (e) {\n",
       "        console.log(e);\n",
       "        cc = Processing.compile(\"println('\" + e.toString() + \"');\");\n",
       "        document.getElementById(\"state_1\").innerHTML = e.toString();\n",
       "        document.getElementById(\"state_1\").style.color = \"red\";\n",
       "        has_error = true;\n",
       "    }\n",
       "    if (cc != undefined) {\n",
       "        try {\n",
       "            processingInstance = new Processing(\"canvas_1\", cc);\n",
       "        } catch (e) {\n",
       "            console.log(e);\n",
       "            cc = Processing.compile(\"println('\" + e.toString() + \"');\");\n",
       "            document.getElementById(\"state_1\").innerHTML = e.toString();\n",
       "            document.getElementById(\"state_1\").style.color = \"red\";\n",
       "            processingInstance = new Processing(\"canvas_1\", cc);\n",
       "            has_error = true;\n",
       "        }\n",
       "    }\n",
       "    if (processingInstance != undefined) {\n",
       "        setTimeout(function () {\n",
       "            // Canvas:\n",
       "            if (processingInstance.externals.context === undefined) {\n",
       "                document.getElementById(\"canvas_div_1\").style.display = \"none\";\n",
       "            }\n",
       "        }, 100);\n",
       "        // Controls:\n",
       "        if (!(processingInstance.isRunning() && processingInstance.draw != undefined)) {\n",
       "            document.getElementById(\"controls_div_1\").style.display = \"none\";\n",
       "        }\n",
       "        if (processingInstance.draw != undefined) {\n",
       "            if (!has_error) {\n",
       "                document.getElementById(\"state_1\").innerHTML = \"Running...\";\n",
       "                document.getElementById(\"state_1\").style.color = \"green\";\n",
       "            }\n",
       "            change_button(document.getElementById(\"run_button_1\"), true);\n",
       "            change_button(document.getElementById(\"pause_button_1\"), false);\n",
       "            change_button(document.getElementById(\"setup_button_1\"),  true);\n",
       "            change_button(document.getElementById(\"draw_button_1\"), true);\n",
       "        } else {\n",
       "            if (!has_error) {\n",
       "                document.getElementById(\"state_1\").innerHTML = \"Done.\";\n",
       "                document.getElementById(\"state_1\").style.color = \"blue\";\n",
       "            }\n",
       "            change_button(document.getElementById(\"run_button_1\"), true);\n",
       "            change_button(document.getElementById(\"pause_button_1\"), true);\n",
       "            change_button(document.getElementById(\"setup_button_1\"),  processingInstance.setup == undefined);\n",
       "            change_button(document.getElementById(\"draw_button_1\"), true);\n",
       "        }\n",
       "    } else {\n",
       "        document.getElementById(\"canvas_div_1\").style.display = \"none\";\n",
       "        document.getElementById(\"controls_div_1\").style.display = \"none\";\n",
       "        if (!has_error) {\n",
       "            document.getElementById(\"state_1\").innerHTML = \"Error.\";\n",
       "            document.getElementById(\"state_1\").style.color = \"red\";\n",
       "        }\n",
       "        change_button(document.getElementById(\"run_button_1\"), true);\n",
       "        change_button(document.getElementById(\"pause_button_1\"), true);\n",
       "        change_button(document.getElementById(\"setup_button_1\"),  true);\n",
       "        change_button(document.getElementById(\"draw_button_1\"), true);\n",
       "    }\n",
       "});\n",
       "\n",
       "</script>\n"
      ],
      "text/plain": [
       "<IPython.core.display.HTML object>"
      ]
     },
     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "int cx, cy;\n",
    "float secondsRadius;\n",
    "float minutesRadius;\n",
    "float hoursRadius;\n",
    "float clockDiameter;\n",
    "\n",
    "void setup() {\n",
    "  size(640, 360);\n",
    "  stroke(255);\n",
    "  \n",
    "  int radius = min(width, height) / 2;\n",
    "  secondsRadius = radius * 0.72;\n",
    "  minutesRadius = radius * 0.60;\n",
    "  hoursRadius = radius * 0.50;\n",
    "  clockDiameter = radius * 1.8;\n",
    "  \n",
    "  cx = width / 2;\n",
    "  cy = height / 2;\n",
    "}\n",
    "\n",
    "void draw() {\n",
    "  background(0);\n",
    "  \n",
    "  // Draw the clock background\n",
    "  fill(80);\n",
    "  noStroke();\n",
    "  ellipse(cx, cy, clockDiameter, clockDiameter);\n",
    "  \n",
    "  // Angles for sin() and cos() start at 3 o'clock;\n",
    "  // subtract HALF_PI to make them start at the top\n",
    "  float s = map(second(), 0, 60, 0, TWO_PI) - HALF_PI;\n",
    "  float m = map(minute() + norm(second(), 0, 60), 0, 60, 0, TWO_PI) - HALF_PI; \n",
    "  float h = map(hour() + norm(minute(), 0, 60), 0, 24, 0, TWO_PI * 2) - HALF_PI;\n",
    "  \n",
    "  // Draw the hands of the clock\n",
    "  stroke(255);\n",
    "  strokeWeight(1);\n",
    "  line(cx, cy, cx + cos(s) * secondsRadius, cy + sin(s) * secondsRadius);\n",
    "  strokeWeight(2);\n",
    "  line(cx, cy, cx + cos(m) * minutesRadius, cy + sin(m) * minutesRadius);\n",
    "  strokeWeight(4);\n",
    "  line(cx, cy, cx + cos(h) * hoursRadius, cy + sin(h) * hoursRadius);\n",
    "  \n",
    "  // Draw the minute ticks\n",
    "  strokeWeight(2);\n",
    "  beginShape(POINTS);\n",
    "  for (int a = 0; a < 360; a+=6) {\n",
    "    float angle = radians(a);\n",
    "    float x = cx + cos(angle) * secondsRadius;\n",
    "    float y = cy + sin(angle) * secondsRadius;\n",
    "    vertex(x, y);\n",
    "  }\n",
    "  endShape();\n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
   "metadata": {
    "collapsed": true
   },
   "outputs": [],
   "source": []
  }
 ],
 "metadata": {
  "kernelspec": {
   "display_name": "Calysto Processing",
   "language": "java",
   "name": "calysto_processing"
  },
  "language_info": {
   "codemirror_mode": {
    "name": "text/x-java",
    "version": 2
   },
   "file_extension": ".java",
   "mimetype": "text/x-java",
   "name": "java"
  }
 },
 "nbformat": 4,
 "nbformat_minor": 0
}