Transform

move, turn and scale the input

Outside the frame it is transparent black, or the frame repeats when tile is on.

Transform wgsl

input

out

Type name: graphics:Transform
Plane: graphics
Tags: imagetransform
Language: wgsl
Tier: shader
Bundle: graphics
Source: node-bundles/graphics/Transform.wgsl
Availability: available

Slots

Slot	Direction	Type
`input`	input	TEXTURE
`out`	output	TEXTURE

Parameters

`transform`

Name	Type	Default	Range
`x`	`float`	`0`	`-2 … 2`
`y`	`float`	`0`	`-2 … 2`
`rotate`	`float`	`0`	`-360 … 360`
`scale`	`float`	`1`	`0.01 … 10`
`tile`	`bool`	`false`

`common`

Name	Type	Default	Range	Doc
`width`	`int`	`0`	`0 … 8192`	Texture size in pixels; 0 follows the first wired texture input. A node that makes its own frames follows the patch's default instead.
`height`	`int`	`0`	`0 … 8192`	Texture size in pixels; 0 follows the first wired texture input. A node that makes its own frames follows the patch's default instead.

Source

The current source of this node, as it stands in the goofi repository at node-bundles/graphics/Transform.wgsl.

node-bundles/graphics/Transform.wgsl

/* goofi
{ "doc": "move, turn and scale the input\nOutside the frame it is transparent black, or the frame repeats when tile is on.",
  "tags": ["image", "transform"],
  "inputs": [{"name": "input", "kind": "TEXTURE"}],
  "params": [
    {"group": "transform", "name": "x", "kind": "float", "default": 0.0, "min": -2.0, "max": 2.0},
    {"group": "transform", "name": "y", "kind": "float", "default": 0.0, "min": -2.0, "max": 2.0},
    {"group": "transform", "name": "rotate", "kind": "float", "default": 0.0, "min": -360.0, "max": 360.0},
    {"group": "transform", "name": "scale", "kind": "float", "default": 1.0, "min": 0.01, "max": 10.0},
    {"group": "transform", "name": "tile", "kind": "bool", "default": false} ] }
*/
fn shade(uv: vec2f) -> vec4f {
    let a = radians(-p.rotate);
    let s = sin(a);
    let k = cos(a);
    let e = (uv - vec2f(0.5) - vec2f(p.x, p.y)) / p.scale;
    let turned = vec2f(e.x * k - e.y * s, e.x * s + e.y * k) + vec2f(0.5);
    let inside = f32(all(turned >= vec2f(0.0)) && all(turned <= vec2f(1.0)));
    let tiling = p.tile != 0u;
    let q = select(clamp(turned, vec2f(0.0), vec2f(1.0)), fract(turned), tiling);
    return textureSample(input, samp, q) * select(inside, 1.0, tiling);
}

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