在 SceneKit 中，SCNLightTypeAmbient 类型的 SCNLight 是否会忽略 categoryBitMask 参数? [英] In SceneKit, does an SCNLight of type SCNLightTypeAmbient ignore the categoryBitMask parameter?

问题描述

好像！

此处忽略 categoryBitMask:

Here the categoryBitMask is ignored:

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

这里有效！

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

推荐答案

没错，环境光的 categoryBitMask 被忽略了(缺少文档).请注意，您可以配置材质以忽略环境照明:

That's right, ambient light's categoryBitMask are ignored (documentation is lacking). Note that you can configure materials to ignore ambient lighting:

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

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