問題描述

CatmullRomCurve3 生成的曲線會(huì)整條顯示，怎么讓其慢慢變長(zhǎng)

相關(guān)代碼

          var curve = new THREE.CatmullRomCurve3( [
            new THREE.Vector3( 0, 0, 0 ),
            new THREE.Vector3( 1, -1, -1 ),
            new THREE.Vector3( -5, 5, 5 )
          ] );

          var geometry = new THREE.Geometry();
          geometry.vertices = curve.getPoints( 50 );
          console.log(curve);
          var material = new THREE.LineBasicMaterial( { color : 0xff0000 } );
          addMesh = new THREE.Line(geometry, material);
          scene.add(addMesh);