Crate bevy_mod_opacity 

Hierarchical opacity for bevy.

The Opacity component

When Opacity is inserted to an entity, the entity and all its descendants will be affected by the opacity value. Unlike bevy components like Visibility Opacity does not need to be put on every entity in the tree. Entities with no Opacity ancestor will not not affected by this crate.

Support for native types

We innately support 2d, 3d and ui, this includes Sprite, TextColor, StandardMaterial, ColorMaterial, Image, BackgroundColor and ForegroundColor.

Additionally you can implement OpacityQuery or derive Opacity to make your own types and materials work with this crate. Combining OpacityQuery with custom QueryData can add support for third party types.

[FadeIn] and [FadeOut]

These components adds a quick way to add and remove entities from your scenes smoothly. You should add a [FadeIn] during the spawn call and use entity.insert(FadeOut) instead of entity.despawn_recursive()

FAQ

• My 3d scene is not fading correctly

Ensure materials are duplicated and unique, since we write to the underlying material directly. Also make sure AlphaMode is set to Blend if applicable.

Structs

Opacity

Component of opacity of this entity and its children.

OpacityMap

A map of entity to opacity, if not present, the entity does not have an opacity root node. This means the entity is out of the scope of this crate and should not be handled.

OpacityPlugin

Plugin for bevy_mod_opacity that adds support for basic bevy types.

Enums

OpacitySet

SystemSet of opacity, runs in PostUpdate between transform propagation and visibility calculation.

UiOpacity

Determine whether BorderColor and BackgroundColor are controlled by opacity or should stay transparent.

Traits

OpacityAsset

An Asset with an opacity value.

OpacityExtension

OpacityMaterialExtension

A MaterialExtension with an opacity value.

OpacityQuery

A QueryData with an opacity value.

Derive Macros

Opacity

Declare a Component or Asset as affected by opacity.