ehtick / cesium-materials-pack

A Cesium plugin with procedurally-shaded materials such as bricks, wood, and noise patterns

Cesium Material Pack: A plugin with procedurally-shaded materials such as bricks, wood, and noise patterns.

Check out the demo.

Name	Screenshot	Description
Asphalt		Asphalt generated with a combination of simplex and cellular noise.
Blob		Blob generated with cellular noise. Resembles water, but clumped in a cell pattern.
Brick		Brick generated with a combination of a simple brick pattern and simplex noise for roughness.
Cement		Cement generated with simplex noise.
Erosion		Animated erosion.
Facet		Facet generated with cellular noise.
Fresnel		A view-dependent combination of reflection and refraction. Similar to water, when the viewer is looking straight down, the material refracts light; as the viewer looks more edge on, the material refracts less and reflects more.
Grass		Grass generated with simplex noise.
Reflection		Cube map reflection for mirror-like surfaces that reflect light, e.g., paint on a car.
Refraction		Cube map refraction for translucent surfaces that refract light, e.g., glass.
TieDye		Tie-dye generated with simplex noise.
Wood		Wood generated with simplex noise.

Cesium version: Tested against 1.0. Most likely works with older and newer versions. Post a message to the Cesium forum if you have compatibility issues.

License: Apache 2.0. Free for commercial and non-commercial use. See LICENSE.md.

Usage

Prebuilt minified and unminified versions of the plugin are in the Build directory. Include the MaterialPack.js file using a script tag after the Cesium.js script tag.

<script src="path/to/Cesium.js"></script>
<script src="path/to/MaterialPack.js"></script>
<script>
// ...
var primitives = scene.primitives;
primitives.add(new Cesium.RectanglePrimitive({
    rectangle : Cesium.Rectangle.fromDegrees(-80.0, 30.0, -60.0, 40.0),
    material : Cesium.Material.fromType('Brick')
}));
</script>

Uniforms are used to change material properties. For example:

rectangle.material = new Cesium.Material({
  fabric : {
    type : 'Wood',
    uniforms : {
      lightWoodColor : new Cesium.Color(0.7, 0.4, 0.1, 1.0),
      darkWoodColor : new Cesium.Color(0.3, 0.1, 0.0, 1.0),
      ringFrequency : 4.0,
      noiseScale : new Cesium.Cartesian2(0.4, 0.8),
      grainFrequency : 18.0
    }
  }
});

Material uniforms:

• Asphalt
  • asphaltColor: rgba color object for the asphalt's color.
  • bumpSize: Number for the size of the asphalt's bumps.
  • roughness: Number that controls how rough the asphalt looks.
• Blob
  • lightColor: rgba color object for the light color.
  • darkColor: rgba color object for the dark color.
  • frequency: Number that controls the frequency of the pattern.
• Brick
  • brickColor: rgba color object for the brick color.
  • mortarColor: rgba color object for the mortar color.
  • brickSize: Number between 0.0 and 1.0 where 0.0 is many small bricks and 1.0 is one large brick.
  • brickPct: Number for the ratio of brick to mortar where 0.0 is all mortar and 1.0 is all brick.
  • brickRoughness: Number between 0.0 and 1.0 representing how rough the brick looks.
  • mortarRoughness: Number between 0.0 and 1.0 representing how rough the mortar looks.
• Cement
  • cementColor: rgba color object for the cement's color.
  • grainScale: Number for the size of rock grains in the cement.
  • roughness: Number that controls how rough the cement looks.
• Erosion
  • color: diffuse color and alpha.
  • time: Time of erosion. 1.0 is no erosion; 0.0 is fully eroded.
• Facet
  • lightColor: rgba color object for the light color.
  • darkColor: rgba color object for the dark color.
  • frequency: Number that controls the frequency of the pattern.
• Fresnel
  • reflection: Reflection Material.
  • refraction: Refraction Material.
• Grass
  • grassColor: rgba color object for the grass' color.
  • dirtColor: rgba color object for the dirt's color.
  • patchiness: Number that controls the size of the color patches in the grass.
• Reflection
  • cubeMap: Object with positiveX, negativeX, positiveY, negativeY, positiveZ, and negativeZ image paths.
  • channels: Three character string containing any combination of r, g, b, and a for selecting the desired image channels.
• Refraction
  • cubeMap: Object with positiveX, negativeX, positiveY, negativeY, positiveZ, and negativeZ image paths.
  • channels: Three character string containing any combination of r, g, b, and a for selecting the desired image channels.
  • indexOfRefractionRatio: Number representing the refraction strength where 1.0 is the lowest and 0.0 is the highest.
• TieDye
  • lightColor: rgba color object for the light color.
  • darkColor: rgba color object for the dark color.
  • frequency: Number that controls the frequency of the pattern.
• Wood
  • lightWoodColor: rgba color object for the wood's base color.
  • darkWoodColor: rgba color object for the color of rings in the wood.
  • ringFrequency: Number for the frequency of rings in the wood.
  • noiseScale: Object with x and y values specifying the noisiness of the ring patterns in both directions.
  • grainFrequency: Number for the frequency of grains in the wood.

For more on how to use Cesium materials, see code for the example and the Fabric tutorial. To run the example locally, run npm install, then run node server.js and navigate to http://localhost:8080 and select the example application to run.

Build

To build, run npm install, then run node build.js.

Contributions

Contributions welcome. We use the same CLA as Cesium. Please email yours before opening a pull request.