Question

我为mouseMove和mouseDown编写了两个非常相似的函数。虽然前者工作正常但后者继续从var intersects = ray.intersectScene（scene）获取空对象。

您可以在此处找到完整的代码 http://converteveryunit.com/pot/biluochun/temp/ 感谢。

function onDocumentMouseMove(event) {

    mouseX = event.clientX - homeWidth/2;
    mouseY = event.clientY - homeHeight/2;

    var vector = new THREE.Vector3( ( event.clientX / homeWidth ) * 2 - 1, - ( event.clientY / homeHeight ) * 2 + 1, 0.5 );
    projector.unprojectVector( vector, camera );

    var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );

    var intersects = ray.intersectScene( scene );
}


function onDocumentMouseDown( event ) {

    event.preventDefault();

    var vector = new THREE.Vector3( ( event.clientX / homeWidth ) * 2 - 1, - ( event.clientY / homeHeight ) * 2 + 1, 100 );
    projector.unprojectVector( vector, camera );

    var ray = new THREE.Ray( camera.position, vector.subSelf( camera.position ).normalize() );

    var intersects = ray.intersectScene( scene );
    console.log( intersects);

    }

Answer 1

我对Three.js并不十分熟悉，但我不禁想知道为什么你的向量在第一个函数中的Z分量为0.5，在第二个函数中为100。如果一个有效，另一个无效，那肯定是一个体面的起点。

three.js intersectScene获取空对象

1 个答案: