在SceneKit中,SCNLightTypeAmbient类型的SCNLight是否忽略categoryBitMask参数？

Question

好像!

这里categoryBitMask被忽略:

ambientLight = [SCNLight light];
ambientLight.color = [UIColor colorWithRed:0.994 green:0.715 blue:0.179 alpha:1.000];
ambientLight.type = SCNLightTypeAmbient;
ambientLight.categoryBitMask = 1;

在这里工作!

ambientLight = [SCNLight light];
ambientLight.color = [UIColor colorWithRed:0.994 green:0.715 blue:0.179 alpha:1.000];
ambientLight.type = SCNLightTypeOmni;
ambientLight.categoryBitMask = 1;

Answer 1

没错,环境光的categoryBitMask被忽略(文档缺乏).请注意,您可以配置材质以忽略环境光照:

aMaterial.locksAmbientWithDiffuse = NO;
aMaterial.ambient.contents = blackColor; (the default)