@nebula.gl/layers/dist-es6/shaderlib/color/color.js

A suite of 3D-enabled data editing layers, suitable for deck.gl

"use strict";

Object.defineProperty(exports, "__esModule", {
  value: true
});
exports["default"] = void 0;
// TODO - this module is a WIP

/* eslint-disable camelcase */
var INITIAL_STATE = {
  color_uOpacity: 1.0,
  color_uDesaturate: 0.0,
  color_uBrightness: 1.0
};

function getUniforms() {
  var opts = arguments.length > 0 && arguments[0] !== undefined ? arguments[0] : INITIAL_STATE;
  var uniforms = {};

  if (opts.opacity) {
    uniforms.color_uOpacity = opts.opacity;
  }

  return uniforms;
}

var vs = "varying vec4 color_vColor;\n\ncolor_setColor(vec4 color) {\n  color_vColor = color;\n}\n";
var fs = "uniform float color_uOpacity;\nuniform float color_uDesaturate;\nuniform float color_uBrightness;\n\nvarying vec4 color_vColor;\n\nvec4 color_getColor() {\n  return color_vColor;\n}\n\nvec4 color_filterColor(vec4 color) {\n  // apply desaturation and brightness\n  if (color_uDesaturate > 0.01) {\n    float luminance = (color.r + color.g + color.b) * 0.333333333 + color_uBrightness;\n    color = vec4(mix(color.rgb, vec3(luminance), color_uDesaturate), color.a);\n\n  // Apply opacity\n  color = vec4(color.rgb, color.a * color_uOpacity);\n  return color;\n}\n";
var _default = {
  name: 'color',
  vs: vs,
  fs: fs,
  getUniforms: getUniforms
};
exports["default"] = _default;
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