| javascript Programming Glossary: planeThree.js Projector and Ray objects http://stackoverflow.com/questions/11036106/three-js-projector-and-ray-objects  intersects 0 .object var intersects ray.intersectObject plane  This event handler is only fired after the mouse down event.. .normalize if SELECTED var intersects ray.intersectObject plane dragVector.sub mouse2D mouseDown2D return var intersects ray.intersectObject.. event event.preventDefault if INTERSECTED plane.position.copy INTERSECTED.position SELECTED null mouseDown false.. 
 Three.js - Width of view http://stackoverflow.com/questions/13350875/three-js-width-of-view  Since the object presumably has depth you have to pick one plane through the mesh and do the calculation at that distance. Here.. 
 Convert long/lat to pixel x/y on a given picure http://stackoverflow.com/questions/2651099/convert-long-lat-to-pixel-x-y-on-a-given-picure  or more accurately ellipsoidal earth is projected onto a plane. In order to achieve your goal you first must know two things.. 
 JavaScript strings outside of the BMP http://stackoverflow.com/questions/3744721/javascript-strings-outside-of-the-bmp  well  javascript unicode utf 16 surrogate pairs astral plane   share improve this question   Depends what you mean by ˜support.. 
 Can you do an isometric perspective with HTML5 <canvas>? http://stackoverflow.com/questions/5186013/can-you-do-an-isometric-perspective-with-html5-canvas  but you won't be able to draw anything above or below that plane. You can of course do 3d rendering either isometric or perspective.. 
 Three.js - how to detect what shape was selected? after drag http://stackoverflow.com/questions/8292486/three-js-how-to-detect-what-shape-was-selected-after-drag  stats var camera scene projector renderer var objects plane var mouse new THREE.Vector2  offset new THREE.Vector3  INTERSECTED.. true  scene.add object  objects.push object   plane new THREE.Mesh new THREE.PlaneGeometry 2000 2000 8 8 new  THREE.MeshBasicMaterial.. 0x000000 opacity 0.25 transparent true wireframe  true  plane.lookAt camera.position  plane.visible false  scene.add plane.. 
 How to create a custom mesh on THREE.JS? http://stackoverflow.com/questions/9252764/how-to-create-a-custom-mesh-on-three-js  towards the camera etc. Since you're drawing in the YZ plane to see your triangle something like this should work var geom.. 
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