[Openautomation-svn] SF.net SVN: openautomation:[649] JSFloorPlan/trunk/src

[<ma...@us...>]

Revision: 649
          http://openautomation.svn.sourceforge.net/openautomation/?rev=649&view=rev
Author:   mayerch
Date:     2012-01-14 14:44:36 +0000 (Sat, 14 Jan 2012)
Log Message:
-----------
New feature: figure out the room / zone that's under the mouse during a click
-> also added functions to map points between building and screen space

Modified Paths:
--------------
    JSFloorPlan/trunk/src/jsfloorplan.js
    JSFloorPlan/trunk/src/jsfloorplan_example_helper.js

Modified: JSFloorPlan/trunk/src/jsfloorplan.js
===================================================================
--- JSFloorPlan/trunk/src/jsfloorplan.js	2012-01-09 18:39:38 UTC (rev 648)
+++ JSFloorPlan/trunk/src/jsfloorplan.js	2012-01-14 14:44:36 UTC (rev 649)
@@ -1074,4 +1074,84 @@
     else
       doMove();
   }
+  
+  /**
+   * Check if point p is in the zone zone. It's basically a point-in-polygon
+   * test using a ray casting from left infinity to the point <code>p</code>.
+   */
+  function pointInZone( p, zone )
+  {
+    var crossing = 0;
+    var prevCorner = floorNodes[ zone.corners[zone.corners.length-1] ];
+    for( var i in zone.corners )
+    {
+      var corner = floorNodes[ zone.corners[i] ];
+      if(                                                // only intersection if
+        (prevCorner.x < p.x || corner.x < p.x )          // at least one point is left
+        &&                                               // and
+        ( (prevCorner.y - p.y) * (corner.y - p.y) < 0 )  // one corner is above and the other below
+      )
+      {
+        crossing++;
+      }
+      prevCorner = corner;
+    }
+    return crossing % 2; // odd number of crossings == inside
+  }
+  
+  /**
+   * Figur out the room that contains the point <code>p</code> in the floor <code>floor</code>.
+   */
+  JSFloorPlan3D.selectRoom = function( p, floor )
+  {
+    var thisFloor = rooms[floor];
+    for( var room in thisFloor )
+    {
+      var thisRoom = thisFloor[room];
+      for( var zone in thisRoom.zones )
+      {
+        if( pointInZone( p, thisRoom.zones[zone] ) )
+        {
+          console.log( 'in zone', thisRoom.zones[zone].name, 'in raum', thisFloor[room].name, 'in stock', floor );
+        }
+      }
+    }
+  }
+  
+  /**
+   * Project screen coordinate to building space
+   */
+  JSFloorPlan3D.sceen2building = function( x, y, h )
+  {
+    var vector = new THREE.Vector3( (x / WIDTH)*2-1, -(y / HEIGHT)*2+1, 0.5 );
+    projector.unprojectVector( vector, camera );
+    var dirVec = vector.subSelf( camera.position ).normalize()
+    var d = (h - camera.position.z) / dirVec.z;
+    return new THREE.Vector3( camera.position.x + d * dirVec.x, camera.position.y + d * dirVec.y, camera.position.z + d * dirVec.z );
+  }
+  
+  /**
+   * Project point in building space to screen space
+   */
+  JSFloorPlan3D.building2screen = function( p )
+  {
+    var screen = p.clone();
+    projector.projectVector( screen, camera );
+    return screen;
+  }
+  
+  /**
+   * This method can be used as an event handler for mouse events.
+   * @param {Event}    event               The jQuery event object.
+   * @param {Function} event.data.callback This callback function will be called
+   *                                       after the mouse event was translated
+   */
+  JSFloorPlan3D.translateMouseEvent = function( event )
+  {
+    console.log( JSFloorPlan3D.buildingProperties, showStates );
+    var thisFloor = JSFloorPlan3D.buildingProperties.floor[showStates.showFloor];
+    var height = thisFloor.heightOfGround + thisFloor.height;
+    var intersec = JSFloorPlan3D.sceen2building( event.offsetX, event.offsetY, height );
+    JSFloorPlan3D.selectRoom( intersec, showStates.showFloor );
+  }
 };//());
\ No newline at end of file

Modified: JSFloorPlan/trunk/src/jsfloorplan_example_helper.js
===================================================================
--- JSFloorPlan/trunk/src/jsfloorplan_example_helper.js	2012-01-09 18:39:38 UTC (rev 648)
+++ JSFloorPlan/trunk/src/jsfloorplan_example_helper.js	2012-01-14 14:44:36 UTC (rev 649)
@@ -102,8 +102,8 @@
 renderer.shadowMapHeight = SHADOW_MAP_HEIGHT;
 renderer.shadowMapEnabled = true;
 //renderer.shadowMapSoft = true;
+var projector = new THREE.Projector();
 
-
 // set up the sphere vars
 var radius = 50, segments = 16, rings = 16;
 
@@ -209,6 +209,7 @@
 /////////////////////////////////////////////////////////////////////////////
 $(function() {
   three_init();
+  $('#top_level').click( 'foo', j.translateMouseEvent );
 });
 /////////////////////////////////////////////////////////////////////////////
 // setup script here:

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