阴影

发布于 2025-01-22 13:25:14 字数 455 浏览 1 评论 0原文

有一棵带有α叶纹理的树。落下的阴影将叶子在“下方”的叶子强烈变暗，这就是为什么模型本身变黑的原因。

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There is a tree with alpha leaf textures. The falling shadow strongly darkens the leaves "below", which is why the model itself becomes dark.

Is there any way to avoid this blackout without affecting the rest of the shadows?
Demo and code in the same place

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橪书 2025-01-29 13:25:14

有一个 Shadow -Material 是看不见的，但仅呈现阴影。您可以将其不透明度设置为模仿阴影黑暗，以下是一个演示：

var planeMaterial = new THREE.ShadowMaterial();
planeMaterial.opacity = 0.5;
var shadowPlane = new THREE.Mesh( geometry, planeMaterial );
shadowPlane.receiveShadow = true;

缺点：在较旧的版本中，有一个shadowdarkness - property被删除。现在，您需要额外的几何形状和材料来模仿简单的属性。

There is a shadowMaterial that is invisible but only renders shadow. You can set its opacity to mimic shadow darkness, here is a demonstration:

var planeMaterial = new THREE.ShadowMaterial();
planeMaterial.opacity = 0.5;
var shadowPlane = new THREE.Mesh( geometry, planeMaterial );
shadowPlane.receiveShadow = true;

Drawback: In older releases there has been a shadowDarkness-property that has been removed. Now you need extra geometry and material to emulate what has been a simple property.

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