知识点
着色器代码写在.html文件中
<script id="vertex-vs" type="x-shader/x-vertex">
...
</script>
<script id="fragment-fs" type="x-shader/x-fragment">
...
</script>
创建球体
var targetModel2 = osg.createTexturedSphere( 10, 30, 30 );
//var createTexturedSphere = function ( radius, widthSegments, heightSegments, phiStart, phiLength, thetaStart, thetaLength ) {}
单面渲染
lightNode.getOrCreateStateSet().setAttributeAndModes( new osg.CullFace( 'BACK' ) );
第一课里面提到过 CullFace，这里复习一下; osgjs里面CullFace的枚举值为：
- CullFace.DISABLE = 0x0;
- CullFace.FRONT = 0x0404;
- CullFace.BACK = 0x0405;
- CullFace.FRONT_AND_BACK = 0x0408;