��权限没有,则隐藏 function forum_list_access_filter($forumlist, $gid, $allow = 'allowread') { global $grouplist; if (empty($forumlist)) return array(); if (1 == $gid) return $forumlist; $forumlist_filter = $forumlist; $group = $grouplist[$gid]; foreach ($forumlist_filter as $fid => $forum) { if (empty($forum['accesson']) && empty($group[$allow]) || !empty($forum['accesson']) && empty($forum['accesslist'][$gid][$allow])) { unset($forumlist_filter[$fid]); } unset($forumlist_filter[$fid]['accesslist']); } return $forumlist_filter; } function forum_filter_moduid($moduids) { $moduids = trim($moduids); if (empty($moduids)) return ''; $arr = explode(',', $moduids); $r = array(); foreach ($arr as $_uid) { $_uid = intval($_uid); $_user = user_read($_uid); if (empty($_user)) continue; if ($_user['gid'] > 4) continue; $r[] = $_uid; } return implode(',', $r); } function forum_safe_info($forum) { //unset($forum['moduids']); return $forum; } function forum_filter($forumlist) { foreach ($forumlist as &$val) { unset($val['brief'], $val['announcement'], $val['seo_title'], $val['seo_keywords'], $val['create_date_fmt'], $val['icon_url'], $val['modlist']); } return $forumlist; } function forum_format_url($forum) { global $conf; if (0 == $forum['category']) { // 列表URL $url = url('list-' . $forum['fid'], '', FALSE); } elseif (1 == $forum['category']) { // 频道 $url = url('category-' . $forum['fid'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = url('read-' . trim($forum['brief']), '', FALSE); } if ($conf['url_rewrite_on'] > 1 && $forum['well_alias']) { if (0 == $forum['category'] || 1 == $forum['category']) { $url = url($forum['well_alias'], '', FALSE); } elseif (2 == $forum['category']) { // 单页 $url = ($forum['threads'] && $forum['brief']) ? url($forum['well_alias'] . '-' . trim($forum['brief']), '', FALSE) : url($forum['well_alias'], '', FALSE); } } return $url; } function well_forum_alias() { $forumlist = forum_list_cache(); if (empty($forumlist)) return ''; $key = 'forum-alias'; static $cache = array(); if (isset($cache[$key])) return $cache[$key]; $cache[$key] = array(); foreach ($forumlist as $val) { if ($val['well_alias']) $cache[$key][$val['fid']] = $val['well_alias']; } return array_flip($cache[$key]); } function well_forum_alias_cache() { global $conf; $key = 'forum-alias-cache'; static $cache = array(); // 用静态变量只能在当前 request 生命周期缓存,跨进程需要再加一层缓存:redis/memcached/xcache/apc if (isset($cache[$key])) return $cache[$key]; if ('mysql' == $conf['cache']['type']) { $arr = well_forum_alias(); } else { $arr = cache_get($key); if (NULL === $arr) { $arr = well_forum_alias(); !empty($arr) AND cache_set($key, $arr); } } $cache[$key] = empty($arr) ? '' : $arr; return $cache[$key]; } ?>javascript - Selecting object with mouse - Three.js - Stack Overflow
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javascript - Selecting object with mouse - Three.js - Stack Overflow

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I know that the question has already been asked. I want to be able to change the color of an object if selected with the mouse. I tried writing the code myself but it seems not to work, so I guess that I am missing something. That's basically the script:

    <script>
        var scene = new THREE.Scene();
        var camera = new THREE.PerspectiveCamera( 75, window.innerWidth/window.innerHeight, 0.1, 1000 );
        var renderer = new THREE.WebGLRenderer();
        renderer.setSize( window.innerWidth/2, window.innerHeight/2 );
        renderer.setClearColor( 0xcccccc, 1 ); 
        document.body.appendChild( renderer.domElement );
        scene.add(camera);

        var geometry = new THREE.Geometry();
        geometry.vertices.push(
            new THREE.Vector3( -5,  5, 0 ),
            new THREE.Vector3( -5, -5, 0 ),
            new THREE.Vector3(  5, -5, 0 )
        );
        var face = new THREE.Face3(0, 1, 2);
        geometry.faces.push(face);
        var material = new THREE.MeshBasicMaterial({color: 0x3300ff});
        var triangle = new THREE.Mesh(geometry, material);
        scene.add(triangle);

        camera.position.z = 10;

        document.addEventListener( 'mousedown', onDocumentMouseDown );

        function onDocumentMouseDown( event ) {    
            event.preventDefault();
            var mouse3D = new THREE.Vector3( ( event.clientX / window.innerWidth ) * 2 - 1,   
                                    -( event.clientY / window.innerHeight ) * 2 + 1,  
                                    0.5 );     
            var projector = new THREE.Projector();                                        
            var raycaster = projector.pickingRay( mouse3D.clone(), camera );
            var intersects = raycaster.intersectObjects( objects );

            if ( intersects.length > 0 ) {
                intersects[ 0 ].object.material.color.setHex( Math.random() * 0xffffff );
            }
        }

        var render = function () {
            requestAnimationFrame( render );
            camera.lookAt( scene.position );
            renderer.render( scene, camera );
        };

        render();
    </script>

If someone could help me I would appreciate it.

I know that the question has already been asked. I want to be able to change the color of an object if selected with the mouse. I tried writing the code myself but it seems not to work, so I guess that I am missing something. That's basically the script:

    <script>
        var scene = new THREE.Scene();
        var camera = new THREE.PerspectiveCamera( 75, window.innerWidth/window.innerHeight, 0.1, 1000 );
        var renderer = new THREE.WebGLRenderer();
        renderer.setSize( window.innerWidth/2, window.innerHeight/2 );
        renderer.setClearColor( 0xcccccc, 1 ); 
        document.body.appendChild( renderer.domElement );
        scene.add(camera);

        var geometry = new THREE.Geometry();
        geometry.vertices.push(
            new THREE.Vector3( -5,  5, 0 ),
            new THREE.Vector3( -5, -5, 0 ),
            new THREE.Vector3(  5, -5, 0 )
        );
        var face = new THREE.Face3(0, 1, 2);
        geometry.faces.push(face);
        var material = new THREE.MeshBasicMaterial({color: 0x3300ff});
        var triangle = new THREE.Mesh(geometry, material);
        scene.add(triangle);

        camera.position.z = 10;

        document.addEventListener( 'mousedown', onDocumentMouseDown );

        function onDocumentMouseDown( event ) {    
            event.preventDefault();
            var mouse3D = new THREE.Vector3( ( event.clientX / window.innerWidth ) * 2 - 1,   
                                    -( event.clientY / window.innerHeight ) * 2 + 1,  
                                    0.5 );     
            var projector = new THREE.Projector();                                        
            var raycaster = projector.pickingRay( mouse3D.clone(), camera );
            var intersects = raycaster.intersectObjects( objects );

            if ( intersects.length > 0 ) {
                intersects[ 0 ].object.material.color.setHex( Math.random() * 0xffffff );
            }
        }

        var render = function () {
            requestAnimationFrame( render );
            camera.lookAt( scene.position );
            renderer.render( scene, camera );
        };

        render();
    </script>

If someone could help me I would appreciate it.

Share Improve this question edited Oct 5, 2015 at 21:56 user128511 asked Oct 5, 2015 at 18:10 vixennvixenn 1972 gold badges5 silver badges15 bronze badges 2
  • 1 use eventcontrols ) alexan0308.github.io/threejs/examples/… – gevaraweb Commented Oct 5, 2015 at 21:42
  • 1 Let me remind you that raycasting is done on CPU and is exceptionally slow. Better approach can be found by keyword "gpu picking": you'd like to render your scene with each clickable face having different color, and then just get a color of pixel by mouse coordinates. – polkovnikov.ph Commented Mar 20, 2017 at 21:40
Add a ment  | 

1 Answer 1

Reset to default 3

Updated your code and made jsfiddle

In onDocumentMouseDown added

var raycaster =  new THREE.Raycaster();                                        
raycaster.setFromCamera( mouse3D, camera );

instead of

var projector = new THREE.Projector();                                        
var raycaster = projector.pickingRay( mouse3D.clone(), camera );

To objects array added triangle mesh and updated size of the renderer. I suggest you to start using Console and do some debugging. You can easily find these errors yourself.

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