// Numbas version: finer_feedback_settings
{"name": "JSXGraph: Show an object when advice is displayed", "extensions": ["jsxgraph"], "custom_part_types": [], "resources": [], "navigation": {"allowregen": true, "showfrontpage": false, "preventleave": false, "typeendtoleave": false}, "question_groups": [{"pickingStrategy": "all-ordered", "questions": [{"name": "JSXGraph: Show an object when advice is displayed", "tags": [], "metadata": {"description": "<p>The diagram contains a line and a hidden glider on that line.</p>\n<p>The JavaScript preamble adds a callback which shows the glider when the question advice is displayed.</p>", "licence": "Creative Commons Attribution 4.0 International"}, "statement": "", "advice": "<p>The point should go here:</p>", "rulesets": {}, "extensions": ["jsxgraph"], "builtin_constants": {"e": true, "pi,\u03c0": true, "i": true, "j": false}, "constants": [], "variables": {"coords": {"name": "coords", "group": "Ungrouped variables", "definition": "vector(x,y)", "description": "", "templateType": "anything", "can_override": false}, "diagram": {"name": "diagram", "group": "Ungrouped variables", "definition": "jsxgraph(\n    500,500,\n    [\n        \"l\": ['line', [[0,1], [1,2]]],\n        \"p\": ['glider', ['l'], [visible: false, id: 'p']],\n    ]\n)", "description": "", "templateType": "anything", "can_override": false}, "x": {"name": "x", "group": "Ungrouped variables", "definition": "random(-3..3)", "description": "", "templateType": "anything", "can_override": false}, "y": {"name": "y", "group": "Ungrouped variables", "definition": "random(-3..3 except x)", "description": "", "templateType": "anything", "can_override": false}, "correct_diagram": {"name": "correct_diagram", "group": "Ungrouped variables", "definition": "jessiecode(400,400,\"\"\"\n  point({x},{y}) <<id:'A', fixed: true>>;\n\"\"\")", "description": "", "templateType": "anything", "can_override": false}}, "variablesTest": {"condition": "", "maxRuns": 100}, "ungrouped_variables": ["x", "y", "coords", "diagram", "correct_diagram"], "variable_groups": [], "functions": {}, "preamble": {"js": "question.signals.on('adviceDisplayed', () => {\n  const board = question.scope.getVariable('diagram').board;\n  board.objects.p.visible(true);\n});", "css": ""}, "parts": [{"type": "extension", "useCustomName": false, "customName": "", "marks": 1, "scripts": {}, "customMarkingAlgorithm": "student_pos: jxg_position(diagram[\"A\"])\n\nmark:\n  correctif(student_pos=coords)\n\ninterpreted_answer: student_pos", "extendBaseMarkingAlgorithm": true, "unitTests": [], "showCorrectAnswer": true, "showFeedbackIcon": true, "variableReplacements": [], "variableReplacementStrategy": "originalfirst", "nextParts": [], "suggestGoingBack": false, "adaptiveMarkingPenalty": 0, "exploreObjective": null, "prompt": "<p>Move the dot to the coordinates $\\var[rowvector]{coords}$.</p>\n<p>{diagram}</p>"}], "partsMode": "all", "maxMarks": 0, "objectives": [], "penalties": [], "objectiveVisibility": "always", "penaltyVisibility": "always", "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}, {"name": "Christian Lawson-Perfect", "profile_url": "http://localhost:8000/accounts/profile/1/"}], "resources": []}]}], "contributors": [{"name": "Christian Lawson-Perfect", "profile_url": "https://numbas.mathcentre.ac.uk/accounts/profile/7/"}, {"name": "Christian Lawson-Perfect", "profile_url": "http://localhost:8000/accounts/profile/1/"}]}