63 lines
1.5 KiB
JavaScript
Executable File
63 lines
1.5 KiB
JavaScript
Executable File
import React, { PropTypes } from 'react';
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import ShapeHelpers from '../helpers.js';
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export default class EllipseDrawComponent extends React.Component {
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constructor(props) {
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super(props);
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}
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getCoordinates() {
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//rx - horizontal radius
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//ry - vertical radius
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//cx and cy - coordinates of the ellipse's center
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let rx;
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let ry;
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let cx;
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let cy;
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//x1 and y1 - coordinates of the ellipse's top left corner
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//x2 and y2 - coordinates of the ellipse's bottom right corner
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const x1 = this.props.shape.points[0];
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const y1 = this.props.shape.points[1];
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const x2 = this.props.shape.points[2];
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const y2 = this.props.shape.points[3];
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rx = (x2 - x1) / 2;
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ry = (y2 - y1) / 2;
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cx = (rx + x1) * this.props.slideWidth / 100;
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cy = (ry + y1) * this.props.slideHeight / 100;
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rx = Math.abs(rx / 100 * this.props.slideWidth);
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ry = Math.abs(ry / 100 * this.props.slideHeight);
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return {
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cx: cx,
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cy: cy,
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rx: rx,
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ry: ry,
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};
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}
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render() {
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let results = this.getCoordinates();
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return (
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<ellipse
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cx={results.cx}
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cy={results.cy}
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rx={results.rx}
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ry={results.ry}
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fill="none"
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stroke={ShapeHelpers.formatColor(this.props.shape.color)}
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strokeWidth={this.props.shape.thickness}
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style={this.props.style}
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>
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</ellipse>
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);
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}
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}
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EllipseDrawComponent.defaultProps = {
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style: {
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WebkitTapHighlightColor: 'rgba(0, 0, 0, 0)',
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},
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};
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