javascript - 如何将纹理应用于 THREE.ExtrudeGeometry？

Question

var arcShape = new THREE.Shape();
arcShape.moveTo( 50, 10 );
arcShape.absarc( 10, 10, 40, 0, Math.PI*2, false );

var map1 = new THREE.ImageUtils.loadTexture( 'moon.jpg' );
var geometry = new THREE.ExtrudeGeometry( arcShape, extrudeSettings );
var new3D = new THREE.Mesh( geometry, new THREE.MeshBasicMaterial( { map: map1 } ) );
new3D.receiveShadow = true;
obj3Dmassive.add( new3D );

纹理 (512x512):http://f3.s.qip.ru/cMfvUhNj.png

结果:http://f3.s.qip.ru/cMfvUhNh.png

如何填充纹理图形？

Answer 1

如果您只有一条直线挤压路径，则可以将纹理应用于挤压形状，而无需自定义 UV 生成器。例如

var extrudeSettings = {
                bevelEnabled: false, 
                steps: 1,
                amount: 20, //extrusion depth, don't define an extrudePath
                material:0, //material index of the front and back face
                extrudeMaterial : 1 //material index of the side faces            
            };

var geometry = shape.extrude(extrudeSettings);

var mesh = new THREE.Mesh(geometry, 
    new THREE.MeshFaceMaterial([materialFace, materialSide]));

这对于千篇一律的形状很方便。