pofulu/sparkar-autofit

A Spark AR tool that keeps the texture of object in correct ratio.

Autofit

Autofit is a Spark AR utility to make object's texture keep in correct ratio.

Both Patch and Script version are included.

You can also Click Here to Download Sample Projects. The PickerHandler in script-usage demo projects is not necessary, it's just used to assist in demo.

For Patch Editor

Install

0. Download Autofit.arp

1. Drag/Drop or import it to Spark AR

Usage

Input

Value	Type	Description
Plane Scale	Vector2	Generally is the the scale of a **plane'**s transform, or scale of rectangle.
Texture Size	Vector2	The Dimensions value of input texture. Find the value and fill it manually.
Texture	Texture	🖼️
Expand / Shrink	Boolean	If true, the mode is Expand. If false, the mode is Shrink.
Background Color	Color	The background color is filled in the empty space in ENVELOPE mode.

Output

Value	Type	Description
Output	Texture	The result can be used in material texture slot.
UV	Vector2	The scaled UV.

For Script

Import

0. Download Autofit.js (Right click and Save as)

1. Drag/Drop or import it to Spark AR.

2. Load in the required module.

   const Autofit = require('./Autofit');
   // Your script...

npm

0. Add package with yarn or npm.

   yarn add sparkar-autofit

   or

   npm i sparkar-autofit

1. Load in the required module.

   const Autofit = require('sparkar-autofit');
   // Your script...

Usage

const Scene = require('Scene');
const Autofit = require('./Autofit');

Scene.root.findFirst('plane0').then(plane0 =>
   Autofit.fitTexture(plane0, Autofit.TextureScaleMode.FIT))
);

Scene.root.findFirst('plane0').then(plane0 =>
   Autofit.fitObject(plane0, Autofit.ObjectScaleMode.BASED_ON_HEIGHT))
);

Reference

Autofit

Method	Description
fitTexture(sceneObject: SceneObjectBase, scaleMode: Autofit.TextureScaleMode, backgroundColor: Point4DSignal): Promise<void>	Fit object's texture scale in ratio.
getFitTextureUV(sceneObject: SceneObjectBase, scaleMode: Autofit.TextureScaleMode): Promise<ScaleSignal>	Get the ScaleSignal that for object to fit scale by texture's ratio.
fitObject(sceneObject: SceneObjectBase, scaleMode: Autofit.ObjectScaleMode): Promise<void>	Fit object's scale by texture's ratio.
getFitObjectScale(sceneObject: SceneObjectBase, scaleMode: Autofit.ObjectScaleMode): Promise<ScaleSignal>	Get the ScaleSignal that for object to fit scale by texture's ratio.

Autofit.ObjectScaleMode

Value	Description
BASED_ON_HEIGHT	Scale based on height mode.
BASED_ON_WIDTH	Scale based on width mode.
BASED_ON_1024	Scale based on resolution 1024 mode.

Autofit.TextureScaleMode

Value	Description
Expand	Scale in expand mode.
Shrink	Scale in shrink mode.
Stretch	Scale in strech mode.

Donations

If this is useful for you, please consider a donation🙏🏼. One-time donations can be made with PayPal.