You can now generate gantt charts from work schedules

src/blenderbim/Makefile

@@ -184,6 +184,13 @@ endif
 	cp -r dist/working/python-dateutil-2.8.1/dateutil dist/blenderbim/libs/site/packages/
 	rm -rf dist/working
 
+	# Provides jsgantt-improved supports for web-based construction sequencing gantt charts
+	mkdir dist/working
+	cd dist/working && wget https://raw.githubusercontent.com/jsGanttImproved/jsgantt-improved/master/dist/jsgantt.js
+	cd dist/working && wget https://raw.githubusercontent.com/jsGanttImproved/jsgantt-improved/master/dist/jsgantt.css
+	cd dist/working && mv jsgantt* dist/blenderbim/bim/data/gantt/
+	rm -rf dist/working
+
 	# Required by IFCDiff
 	mkdir dist/working
 	cd dist/working && wget https://github.com/Moult/deepdiff/archive/master.zip

src/blenderbim/blenderbim/bim/data/gantt/index.mustache

@@ -0,0 +1,11 @@
+<link href="jsgantt.css" rel="stylesheet" type="text/css"/>
+<script src="jsgantt.js" type="text/javascript"></script>
+<div style="position:relative" class="gantt" id="GanttChartDIV"></div>
+<script type="text/javascript">
+var g = new JSGantt.GanttChart(document.getElementById('GanttChartDIV'), 'day');
+var json_data = `
+{{{json_data}}}
+`;
+JSGantt.parseJSONString(json_data, g);
+g.Draw();
+</script>

src/blenderbim/blenderbim/bim/module/sequence/__init__.py

@@ -41,6 +41,7 @@ classes = (
     operator.EditTaskTime,
     operator.AssignProduct,
     operator.UnassignProduct,
+    operator.GenerateGanttChart,
     prop.WorkPlan,
     prop.BIMWorkPlanProperties,
     prop.Task,

src/blenderbim/blenderbim/bim/module/sequence/operator.py

@@ -1,5 +1,8 @@
+import os
 import bpy
 import json
+import pystache
+import webbrowser
 import ifcopenshell.api
 from datetime import datetime
 from dateutil import parser
@@ -783,3 +786,42 @@ class UnassignProduct(bpy.types.Operator):
             )
         Data.load(self.file)
         return {"FINISHED"}
+
+
+class GenerateGanttChart(bpy.types.Operator):
+    bl_idname = "bim.generate_gantt_chart"
+    bl_label = "Generate Gantt Chart"
+    work_schedule: bpy.props.IntProperty()
+
+    def execute(self, context):
+        self.file = IfcStore.get_file()
+        self.json = []
+        for task_id in Data.work_schedules[self.work_schedule]["RelatedObjects"]:
+            self.create_new_task_json(task_id)
+        with open(os.path.join(bpy.context.scene.BIMProperties.data_dir, "gantt", "index.html"), "w") as f:
+            with open(os.path.join(bpy.context.scene.BIMProperties.data_dir, "gantt", "index.mustache"), "r") as t:
+                f.write(pystache.render(t.read(), {"json_data": json.dumps(self.json)}))
+        webbrowser.open("file://" + os.path.join(bpy.context.scene.BIMProperties.data_dir, "gantt", "index.html"))
+        return {"FINISHED"}
+
+    def create_new_task_json(self, task_id):
+        task = self.file.by_id(task_id)
+        self.json.append(
+            {
+                "pID": task.id(),
+                "pName": task.Name,
+                "pStart": task.TaskTime.ScheduleStart if task.TaskTime else "",
+                "pEnd": task.TaskTime.ScheduleFinish if task.TaskTime else "",
+                "pPlanStart": task.TaskTime.ScheduleStart if task.TaskTime else "",
+                "pPlanEnd": task.TaskTime.ScheduleFinish if task.TaskTime else "",
+                "pClass": "ggroupblack",
+                "pMile": 1 if task.IsMilestone else 0,
+                "pComp": 0,
+                "pGroup": 1,
+                "pParent": task.Nests[0].RelatingObject.id() if task.Nests else 0,
+                "pOpen": 1,
+                "pCost": 1,
+            }
+        )
+        for task_id in Data.tasks[task_id]["RelatedObjects"]:
+            self.create_new_task_json(task_id)

src/blenderbim/blenderbim/bim/module/sequence/ui.py

@@ -100,6 +100,7 @@ class BIM_PT_work_schedules(Panel):
                 row.operator("bim.edit_work_schedule", text="", icon="CHECKMARK")
             elif self.props.is_editing == "TASKS":
                 row.prop(self.props, "should_show_times", text="", icon="TIME")
+                row.operator("bim.generate_gantt_chart", text="", icon="NLA").work_schedule = work_schedule_id
                 row.operator("bim.add_summary_task", text="", icon="ADD").work_schedule = work_schedule_id
             row.operator("bim.disable_editing_work_schedule", text="", icon="CANCEL")
         elif self.props.active_work_schedule_id:

src/blenderbim/ifc_to_gantt.py

@@ -1,33 +0,0 @@
-import json
-import ifcopenshell
-
-class IfcToGantt:
-    def __init__(self):
-        self.json = []
-
-    def execute(self):
-        self.file = ifcopenshell.open("p6.ifc")
-        self.root = self.file.by_type("IfcTask")[0]
-        task = self.root
-        for task in self.file.by_type("IfcTask"):
-            self.json.append({
-                "pID": task.id(),
-                "pName": task.Name,
-                "pStart": task.TaskTime.ScheduleStart if task.TaskTime else "",
-                "pEnd": task.TaskTime.ScheduleFinish if task.TaskTime else "",
-                "pPlanStart": task.TaskTime.ScheduleStart if task.TaskTime else "",
-                "pPlanEnd": task.TaskTime.ScheduleFinish if task.TaskTime else "",
-                "pClass": "ggroupblack",
-                "pMile": 1 if task.IsMilestone else 0,
-                "pComp": 0,
-                "pGroup": 1,
-                "pParent": task.Nests[0].RelatingObject.id() if task.Nests else 0,
-                "pOpen": 1,
-                "pCost":  1
-            })
-        with open("p6.json", "w") as f:
-            json.dump(self.json, f)
-
-ifc_to_gantt = IfcToGantt()
-ifc_to_gantt.execute()
-