{
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   "cell_type": "code",
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    {
     "data": {
      "application/javascript": [
       "\n",
       "        var component = document.getElementById(\"sketch_19\");\n",
       "        if (component != undefined)\n",
       "            component.remove();\n",
       "        component = document.getElementById(\"state_19\");\n",
       "        if (component != undefined)\n",
       "            component.remove();\n",
       "        component = document.getElementById(\"controls_div_19\");\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_19\");\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_19\">\n",
       "  <b>Sketch #19:</b><br/>\n",
       "  <canvas id=\"canvas_19\"></canvas><br/>\n",
       "</div>\n",
       "<div id=\"controls_div_19\">\n",
       "  <button id=\"run_button_19\" onclick=\"startSketch('19');\">\n",
       "    <i class=\"fa fa-play-circle-o\" style=\"size: 2em;\"></i>\n",
       "        Run\n",
       "  </button>\n",
       "  <button id=\"pause_button_19\" onclick=\"pauseSketch('19');\">\n",
       "    <i class=\"fa fa-pause\" style=\"size: 2em;\"></i>\n",
       "        Pause\n",
       "  </button>\n",
       "  <button id=\"setup_button_19\" onclick=\"setupSketch('19');\">\n",
       "    setup()\n",
       "  </button>\n",
       "  <button id=\"draw_button_19\" onclick=\"drawSketch('19');\">\n",
       "    draw()\n",
       "  </button>\n",
       "</div>\n",
       "<b>Sketch #19 state:</b> <span id=\"state_19\">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 = 'class Person {\\n    int x, y;\\n    float angle;\\n    \\n    Person(int x, int y) {\\n        this.x = x;\\n        this.y = y;\\n        this.angle = 0.0;\\n    }\\n    void move() {\\n        this.angle = this.angle + .1; // these are in radians\\n    }\\n    \\n    void draw() {\\n        ellipse(this.x, this.y, 50, 50);\\n        rect(this.x - 25, this.y + 25, 50, 100);\\n        // left arm:\\n        quad(this.x - 25 - 10, this.y + 25,\\n             this.x - 25, this.y + 25,\\n             this.x - 25, this.y + 25 + 40,\\n             this.x - 25 - 10, this.y + 25 + 40);\\n\\n        // right arm, draw relative to origin:\\n        float x1 = 0;\\n        float y1 = 0;\\n        float x2 = 10;\\n        float y2 = 0;\\n        float x3 = 10;\\n        float y3 = 40;\\n        float x4 = 0;\\n        float y4 = 40;\\n               \\n        pushMatrix();\\n        translate(this.x + 25, this.y + 25); // move to where you want it\\n        rotate(angle);                       // rotate\\n        quad(x1, y1,\\n             x2, y2,\\n             x3, y3,\\n             x4, y4);\\n        popMatrix();\\n    }\\n}\\n\\nPerson[] p = new Person[5];\\n\\nvoid setup() {\\n    int i = 0;\\n    while (i < 5) {\\n        p[i] = new Person(int(random(500)), 100);\\n        i = i + 1; // i++\\n    }\\n     size(500, 300);\\n}\\n\\nvoid draw() {\\n    background(128);\\n    for (int i=0; i < 5; i++) {\\n        p[i].draw();\\n    }\\n    text(\"Click to move arm\", 10, 20);\\n}\\n\\nvoid mousePressed() {\\n    for (int i=0; i < 5; i++) {\\n        p[i].move();\\n    }    \\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_19\").innerHTML = e.toString();\n",
       "        document.getElementById(\"state_19\").style.color = \"red\";\n",
       "        has_error = true;\n",
       "    }\n",
       "    if (cc != undefined) {\n",
       "        try {\n",
       "            processingInstance = new Processing(\"canvas_19\", cc);\n",
       "        } catch (e) {\n",
       "            console.log(e);\n",
       "            cc = Processing.compile(\"println('\" + e.toString() + \"');\");\n",
       "            document.getElementById(\"state_19\").innerHTML = e.toString();\n",
       "            document.getElementById(\"state_19\").style.color = \"red\";\n",
       "            processingInstance = new Processing(\"canvas_19\", 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_19\").style.display = \"none\";\n",
       "            }\n",
       "        }, 100);\n",
       "        // Controls:\n",
       "        if (!(processingInstance.isRunning() && processingInstance.draw != undefined)) {\n",
       "            document.getElementById(\"controls_div_19\").style.display = \"none\";\n",
       "        }\n",
       "        if (processingInstance.draw != undefined) {\n",
       "            if (!has_error) {\n",
       "                document.getElementById(\"state_19\").innerHTML = \"Running...\";\n",
       "                document.getElementById(\"state_19\").style.color = \"green\";\n",
       "            }\n",
       "            change_button(document.getElementById(\"run_button_19\"), true);\n",
       "            change_button(document.getElementById(\"pause_button_19\"), false);\n",
       "            change_button(document.getElementById(\"setup_button_19\"),  true);\n",
       "            change_button(document.getElementById(\"draw_button_19\"), true);\n",
       "        } else {\n",
       "            if (!has_error) {\n",
       "                document.getElementById(\"state_19\").innerHTML = \"Done.\";\n",
       "                document.getElementById(\"state_19\").style.color = \"blue\";\n",
       "            }\n",
       "            change_button(document.getElementById(\"run_button_19\"), true);\n",
       "            change_button(document.getElementById(\"pause_button_19\"), true);\n",
       "            change_button(document.getElementById(\"setup_button_19\"),  processingInstance.setup == undefined);\n",
       "            change_button(document.getElementById(\"draw_button_19\"), true);\n",
       "        }\n",
       "    } else {\n",
       "        document.getElementById(\"canvas_div_19\").style.display = \"none\";\n",
       "        document.getElementById(\"controls_div_19\").style.display = \"none\";\n",
       "        if (!has_error) {\n",
       "            document.getElementById(\"state_19\").innerHTML = \"Error.\";\n",
       "            document.getElementById(\"state_19\").style.color = \"red\";\n",
       "        }\n",
       "        change_button(document.getElementById(\"run_button_19\"), true);\n",
       "        change_button(document.getElementById(\"pause_button_19\"), true);\n",
       "        change_button(document.getElementById(\"setup_button_19\"),  true);\n",
       "        change_button(document.getElementById(\"draw_button_19\"), true);\n",
       "    }\n",
       "});\n",
       "\n",
       "</script>\n"
      ],
      "text/plain": [
       "<IPython.core.display.HTML object>"
      ]
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     "metadata": {},
     "output_type": "display_data"
    }
   ],
   "source": [
    "class Person {\n",
    "    int x, y;\n",
    "    float angle;\n",
    "    \n",
    "    Person(int x, int y) {\n",
    "        this.x = x;\n",
    "        this.y = y;\n",
    "        this.angle = ranom;\n",
    "    }\n",
    "    void move() {\n",
    "        this.angle = this.angle + .1; // these are in radians\n",
    "    }\n",
    "    \n",
    "    void draw() {\n",
    "        ellipse(this.x, this.y, 50, 50);\n",
    "        rect(this.x - 25, this.y + 25, 50, 100);\n",
    "        // left arm:\n",
    "        quad(this.x - 25 - 10, this.y + 25,\n",
    "             this.x - 25, this.y + 25,\n",
    "             this.x - 25, this.y + 25 + 40,\n",
    "             this.x - 25 - 10, this.y + 25 + 40);\n",
    "\n",
    "        // right arm, draw relative to origin:\n",
    "        float x1 = 0;\n",
    "        float y1 = 0;\n",
    "        float x2 = 10;\n",
    "        float y2 = 0;\n",
    "        float x3 = 10;\n",
    "        float y3 = 40;\n",
    "        float x4 = 0;\n",
    "        float y4 = 40;\n",
    "               \n",
    "        pushMatrix();\n",
    "        translate(this.x + 25, this.y + 25); // move to where you want it\n",
    "        rotate(angle);                       // rotate it\n",
    "        quad(x1, y1,\n",
    "             x2, y2,\n",
    "             x3, y3,\n",
    "             x4, y4);\n",
    "        popMatrix();\n",
    "    }\n",
    "}\n",
    "\n",
    "Person[] people = new Person[5];\n",
    "\n",
    "void setup() {\n",
    "    int i = 0;\n",
    "    while (i < 5) {\n",
    "        people[i] = new Person(int(random(500)), 100);\n",
    "        i = i + 1; // i++\n",
    "    }\n",
    "     size(500, 300);\n",
    "}\n",
    "\n",
    "void draw() {\n",
    "    background(128);\n",
    "    for (int i=0; i < 5; i++) {\n",
    "        people[i].draw();\n",
    "    }\n",
    "    text(\"Click to move arm\", 10, 20);\n",
    "}\n",
    "\n",
    "void mousePressed() {\n",
    "    for (int i=0; i < 5; i++) {\n",
    "        people[i].move();\n",
    "    }    \n",
    "}"
   ]
  },
  {
   "cell_type": "code",
   "execution_count": null,
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