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* @license Apache-2.0
*
* Copyright (c) 2018 The Stdlib Authors.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
'use strict';
// MODULES //
var logger = require( 'debug' );
// VARIABLES //
var debug = logger( 'plot:render:svg:marks:symbols' );
// MAIN //
/**
* Renders symbols marks.
*
* @private
* @param {Object} state - state
* @returns {VTree} virtual tree
*/
function render( state ) {
var nOpacities;
var nSymbols;
var nColors;
var opacity;
var nSizes;
var symbol;
var color;
var marks;
var size;
var sym;
var len;
var i;
sym = state.$.svg.symbols;
nOpacities = state.symbolsOpacity.length;
nSymbols = state.symbols.length;
nColors = state.colors.length;
nSizes = state.symbolsSize.length;
len = state.x.length;
marks = [];
debug( 'Rendering symbols...' );
for ( i = 0; i < len; i++ ) {
symbol = state.symbols[ i%nSymbols ];
debug( 'Symbol: %s (%d).', symbol, i );
if ( symbol === 'none' ) {
debug( 'Symbol (%d) is `none`. Skipping...', i );
continue;
}
opacity = state.symbolsOpacity[ i%nOpacities ];
debug( 'Symbols opacity: %d (%d).', opacity, i );
size = state.symbolsSize[ i%nSizes ];
debug( 'Symbols size: %d (%d).', size, i );
color = state.colors[ i%nColors ];
debug( 'Symbols color: %s (%d).', color, i );
sym.x = state.x[ i ];
sym.y = state.y[ i ];
sym.symbol = symbol;
sym.label = state.labels[ i ] || '';
sym.color = color;
sym.size = size;
sym.opacity = opacity;
debug( 'Rendering symbols %d...', i );
marks.push( sym.render() );
}
debug( 'Finished rendering symbols.' );
return marks;
}
// EXPORTS //
module.exports = render;
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