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namespace3D Scenes1 functionUI apps only

datumhue.scene

3D scene graph: meshes, lights, cameras, raycasting.

Returns handles
Scene

Functions 1

datumhue.scene.new

functionUI apps only
datumhue.scene.new(opts: scene.SceneNewOptions) -> Scene

Create a 3D scene viewport.

Example
-- It draws into its own 320 x 240 pixel image; mount it to show it.
local scene = datumhue.scene.new({ width = 320, height = 240 })
scene:mount({ width = 320, height = 240 })
scene:cube({ color = datumhue.color("#7fbbb3") })

opts scene.SceneNewOptions options 3 keys

KeyTypeDefaultDescription
widthnumber512Viewport width in pixels.
heightnumber512Viewport height in pixels.
hdrbooleanfalseEnable HDR rendering.

In the guide: Draw shapes and text 3D scenes Shaders

Types 10

scene.BillboardMode

enum
ValueDescription
"y_locked"
"full"
"none"

Used by: SceneNode.billboard

Nested in: scene.SpriteOptions

scene.ClipDirection

enum
ValueDescription
"forward"
"reverse"
"ping_pong"

Nested in: scene.ClipDef

scene.DeformKind

enum
ValueDescription
"wave"Directional sine across local XZ, displacing local Y.
"ripple"Radial sine out from origin in local XZ, displacing local Y.
"sway"Lateral bend along direction, weighted by height so the base stays anchored.
"noise"Smooth animated noise over local XZ, displacing local Y.

Used by: Deformer.kind

Nested in: scene.DeformOptions

scene.LightOptions

options

options 3 keys

KeyTypeDefaultDescription
colorColordatumhue.color(1, 1, 1)Light color.
intensitynumber1000Luminous intensity.
shadowsbooleanfalseCast shadows.

Extended by: scene.DirectionalLightOptions, scene.PointLightOptions, scene.SpotLightOptions

scene.MeshOptions

options

options 5 keys, 3 inherited

KeyTypeDefaultDescription
colorColordatumhue.color(1, 1, 1)Base color of the node's own material; ignored when material is given.
materialMaterial | Shadera standard material of colorMaterial handle to apply: a standard Material, or a Shader, whose color the mesh shows unlit (a Material's shader lights it).
From scene.Transform3dOptions
posVec3datumhue.math.vec3(0, 0, 0)World-space position.
rotationQuatdatumhue.math.quat.identity()Rotation quaternion. Build with datumhue.math.quat.from_euler etc.
scaleVec3datumhue.math.vec3(1, 1, 1)Per-axis scale.

Used by: Scene:cube, Scene:sphere, Scene:cylinder, Scene:capsule, Scene:torus, Scene:cone

scene.PlayOpts

options

options 2 keys

KeyTypeDefaultDescription
speednumberthe animator keeps its current speedPlayback rate multiplier; negative plays the clip in reverse.
loopingbooleanthe clip's own loopingOverride the clip's loop policy for this play.

Used by: Animator:play, Animator:queue

scene.SpriteAlphaMode

enum
ValueDescription
"cutout"
"blend"
"opaque"
"hash"

Used by: SceneNode.alpha

Nested in: scene.SpriteOptions

scene.SpriteSizeMode

enum
ValueDescription
"world"
"screen"

Used by: SceneNode.size_mode

Nested in: scene.SpriteOptions

scene.Tonemapping

enum
ValueDescription
"none"
"reinhard"
"reinhard_luminance"
"aces"
"agx"
"somewhat_boring"
"blender_filmic"
"tony_mcmapface"
"khronos_pbr_neutral"

Used by: Scene.tonemapping

scene.Transform3dOptions

options

options 3 keys

KeyTypeDefaultDescription
posVec3datumhue.math.vec3(0, 0, 0)World-space position.
rotationQuatdatumhue.math.quat.identity()Rotation quaternion. Build with datumhue.math.quat.from_euler etc.
scaleVec3datumhue.math.vec3(1, 1, 1)Per-axis scale.

Extended by: scene.MeshOptions, scene.NodeUpdateOptions, scene.PlaneOptions

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Victor Mono is licensed under the SIL Open Font License 1.1
Copyright (c) 2024, Rune Bjørnerås (https://github.com/rubjo)

This Font Software is licensed under the SIL Open Font License, Version 1.1.
This license is copied below, and is also available with a FAQ at:
http://scripts.sil.org/OFL


-----------------------------------------------------------
SIL OPEN FONT LICENSE Version 1.1 - 26 February 2007
-----------------------------------------------------------

PREAMBLE
The goals of the Open Font License (OFL) are to stimulate worldwide
development of collaborative font projects, to support the font creation
efforts of academic and linguistic communities, and to provide a free and
open framework in which fonts may be shared and improved in partnership
with others.

The OFL allows the licensed fonts to be used, studied, modified and
redistributed freely as long as they are not sold by themselves. The
fonts, including any derivative works, can be bundled, embedded,
redistributed and/or sold with any software provided that any reserved
names are not used by derivative works. The fonts and derivatives,
however, cannot be released under any other type of license. The
requirement for fonts to remain under this license does not apply
to any document created using the fonts or their derivatives.

DEFINITIONS
"Font Software" refers to the set of files released by the Copyright
Holder(s) under this license and clearly marked as such. This may
include source files, build scripts and documentation.

"Reserved Font Name" refers to any names specified as such after the
copyright statement(s).

"Original Version" refers to the collection of Font Software components as
distributed by the Copyright Holder(s).

"Modified Version" refers to any derivative made by adding to, deleting,
or substituting -- in part or in whole -- any of the components of the
Original Version, by changing formats or by porting the Font Software to a
new environment.

"Author" refers to any designer, engineer, programmer, technical
writer or other person who contributed to the Font Software.

PERMISSION & CONDITIONS
Permission is hereby granted, free of charge, to any person obtaining
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Software, subject to the following conditions:

1) Neither the Font Software nor any of its individual components,
in Original or Modified Versions, may be sold by itself.

2) Original or Modified Versions of the Font Software may be bundled,
redistributed and/or sold with any software, provided that each copy
contains the above copyright notice and this license. These can be
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3) No Modified Version of the Font Software may use the Reserved Font
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This license becomes null and void if any of the above conditions are
not met.

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