glam/es5/lib/augment/fog/index.js

Experimental WebGL Engine

'use strict';

Object.defineProperty(exports, "__esModule", {
	value: true
});
exports.default = createFog;

var _objectAssign = require('object-assign');

var _objectAssign2 = _interopRequireDefault(_objectAssign);

var _setUniforms = require('./set-uniforms');

var _setUniforms2 = _interopRequireDefault(_setUniforms);

var _useAugment = require('../use-augment');

var _useAugment2 = _interopRequireDefault(_useAugment);

function _interopRequireDefault(obj) { return obj && obj.__esModule ? obj : { default: obj }; }

function Fog(material, fogConfig) {

	this.flags = (0, _objectAssign2.default)({}, material.flags, { recompile: true });

	this.fragSource = material.fragSource;
	this.vertSource = material.vertSource;

	this.defines = material.defines.concat("FOG");
	this.shader = null;
	this.mode = material.mode;

	this.setUniforms = material.setUniforms.concat(_setUniforms2.default);
	this.setAttributes = material.setAttributes.slice();

	this.shading = (0, _objectAssign2.default)({ fog: fogConfig }, material.shading);
	this.use = _useAugment2.default.bind(null, this);
}

function createFog(material, properties) {

	var fogConfig = (0, _objectAssign2.default)({
		near: 10,
		far: 100,
		color: [0.4, 0.4, 0.5]
	}, properties);

	if (typeof material === 'function') {

		return function createMaterialWithFog() {

			//TODO - Create a function to do this thing
			var arity = material.length;
			var originalMaterialArgs = Array.prototype.slice.call(arguments, 0, arity);
			var newFogConfig = (0, _objectAssign2.default)({}, fogConfig, arguments[arity]);

			return new Fog(material.apply(this, originalMaterialArgs), newFogConfig);
		};
	} else {
		return new Fog(material, fogConfig);
	}
}