Heatmap

Thermal-camera heat flowing through any 2D, SVG, or 3D shape. Powered by Paper Shaders.

Props

  • origin

    Reference edge the center position is measured from (center default). Lets you pin the shape relative to a corner or the canvas centre.

    Type
    string
    Default
    center

  • center

    Center position of the heatmap shape

    Type
    {x: number, y: number}
    Default
    {"x":0.5,"y":0.5}

  • scale

    Scale of the heatmap shape (1 = default size)

    Type
    number
    Default
    1

  • rotation

    Rotation of the heatmap shape in degrees

    Type
    number
    Default
    0

  • colorA

    Cold color (used when no gradient stops are set)

    Type
    string
    Default
    #02010f

  • colorB

    Hot color (used when no gradient stops are set)

    Type
    string
    Default
    #f9e25f

  • stops

    Multi-stop gradient colors (overrides Color A / Color B when set)

    Type
    object
    Default
    [{"color":"#02010f","position":0},{"color":"#2a0a8a","position":0.2},{"color":"#a41c9b","position":0.45},{"color":"#e8632b","position":0.7},{"color":"#f9e25f","position":0.9},{"color":"#ffffff","position":1}]

  • colorSpace

    Color space for the heat ramp interpolation

    Type
    "linear" | "oklch" | "oklab" | "hsl" | "hsv" | "lch"
    Default
    oklab

  • innerGlow

    Heat filling the inside of the shape

    Type
    number
    Default
    0.4

  • outerGlow

    Heat radiating beyond the silhouette

    Type
    number
    Default
    0.2

  • contour

    Heat concentrated along the shape boundary

    Type
    number
    Default
    0.5

  • angle

    Direction the heat waves travel, in degrees

    Type
    number
    Default
    90

  • speed

    Speed of the flowing heat. 0 pauses.

    Type
    number
    Default
    1

  • shape

    Shape to render — choose from 11 built-in analytical shapes or supply a custom SDF. See the Shape Effects guide for all available shapes and their options.

    Type
    ShapeConfig
    Default
    sphere3D

  • shapeSdfUrl

    URL to a pre-generated SDF `.bin` file — when non-empty, activates SVG mode and triggers a shader recompile. See the Shape Effects guide for how to generate an SDF from an SVG.

    Type
    string
    Default
    ""

Usage

<Shader>
  <Heatmap />
</Shader>