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POthree.js - ray intersection and sphere position
 

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    <p>I've a scene with tube geometry and ray intersection is working fine. Upon ray intersection I am showing a small red color sphere and a tooltip next to the cursor. Please find the <img src="https://i.stack.imgur.com/u4KnE.png" alt="image without header"></p> <p>Now if I add a header with div element, the ray intersection is working but the issue is there is a distance between red sphere, tooltip and a mouse cursor. Please find the <img src="https://i.stack.imgur.com/uYdHQ.png" alt="image with header"></p> <p>Please find below the code of header, tool-tip div, sphere and collision detection function:</p> <p><strong>Header:</strong></p> <pre><code> &lt;div style="margin-top:10px;margin-left:3%;height:100px;width:70%"&gt; &lt;label style="color:#b0bb02;font-size:14pt"&gt;three.js&lt;/label&gt; &lt;label style="color:#f5f7f9;font-size:14pt;font-weight:bold"&gt;Tube Geometry&lt;/label&gt;&lt;br&gt;&lt;br&gt; &lt;/div&gt; </code></pre> <p><strong>Tool-tip div:</strong></p> <pre><code>textDiv = document.createElement( 'div' ); textDiv.style.position = 'absolute'; textDiv.style.top = '50px'; textDiv.style.margin = '8px'; textDiv.style.border = '1px solid blue'; textDiv.style.zIndex = '100'; textDiv.style.background = '#ffffff'; textDiv.style.display = 'block'; container.appendChild( textDiv ); </code></pre> <p><strong>Sphere geometry:</strong></p> <pre><code>dot = new THREE.Mesh ( new THREE.SphereGeometry( 1, 12, 1 ), new THREE.MeshBasicMaterial( { color: 0xff0000 } ) ); </code></pre> <p><strong>Collision detection:</strong></p> <pre><code>var intersects; function detectCollision(event){ var vector = new THREE.Vector3(( event.clientX / window.innerWidth ) * 2 - 1,- ( event.clientY / window.innerHeight ) * 2 + 1, 0.5 ); /*var mouse_x = ((event.pageX-event.target.offsetParent.offsetLeft) / renderer.domElement.width) * 2 - 1; var mouse_y = - ((event.pageY-event.target.offsetParent.offsetTop) / renderer.domElement.height) * 2 + 1; var vector = new THREE.Vector3(mouse_x, mouse_y, 0.5);*/ projector.unprojectVector( vector, camera ); var ray = new THREE.Raycaster( camera.position, vector.subSelf( camera.position ).normalize() ); intersects = ray.intersectObjects( objects ); var pnt=0; var clickedMD = 0; var clickedDegree; var clickedTVD; if ( intersects.length &gt; 0 ) { dot.position.copy( intersects[0].point ); scene.add( dot ); var fi = intersects[0].faceIndex; pnt = Math.round(fi/11); clickedMD = pathObjColl[pnt].md; clickedTVD = Math.round(pathObjColl[pnt].point.z); clickedDegree = degrees[Math.round(fi%11)]; // tooltip var elem = document.getElementsByTagName("canvas"); var canvas = elem[0]; var x = event.pageX - canvas.offsetLeft ; var y = event.pageY - canvas.offsetTop ; //console.log("X: "+x+" Y: "+y); textDiv.style.top = y+"px"; textDiv.style.left = x+"px"; textDiv.innerHTML = "&amp;nbsp;Degree: "+clickedDegree+"&lt;br/&gt;&amp;nbsp;MD: "+clickedMD+" ft&lt;br/&gt;&amp;nbsp;TVD: "+clickedTVD+" ft"; if(textDiv.style.display == 'none'){ textDiv.style.display = 'block'; } } else if(intersects.length == 0){ var textDivVis = textDiv.style.display; console.log(textDivVis); if(textDivVis == 'block'){ textDiv.style.display = 'none'; } } } </code></pre> <p><a href="http://jsfiddle.net/RnFqz/50/" rel="nofollow noreferrer">demo on jsfiddle</a></p> <p><strong>Why there is a distance between the mouse cursor, sphere geometry and a too-tip if I add header ?</strong></p> <p>r54</p>
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    1. COI've updated the [jsfiddle](http://jsfiddle.net/RnFqz/50/).
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    2. CO[jsfiddle demo without header](http://jsfiddle.net/RnFqz/51/)
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