/
EuclideanVisualizerRenderer.js
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/
EuclideanVisualizerRenderer.js
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/**
* @file EuclideanVisualizerRenderer.js
*
*
* @author Colin Sullivan <colin [at] colin-sullivan.net>
*
* @copyright 2018 Colin Sullivan
* @license Licensed under the GPLv3 license.
**/
import * as PIXI from 'pixi.js';
import * as _ from 'lodash';
import bjorklund from 'bjorklund-js';
import { turquoiseLightColor, asHexNumber } from 'constants/colors';
const OUTER_CIRCLE_LINE_WIDTH = 2;
const OUTER_CIRCLE_RADIUS = 3 + OUTER_CIRCLE_LINE_WIDTH;
const INNER_CIRCLE_RADIUS = 3;
const OUTER_CIRCLE_COLOR = asHexNumber(turquoiseLightColor);
const INNER_CIRCLE_COLOR = asHexNumber(turquoiseLightColor);
const POLYGON_COLOR = asHexNumber(turquoiseLightColor);
const POLYGON_LINE_WIDTH = 2;
function generateTexture (renderer, texture) {
return renderer.generateTexture(texture, PIXI.SCALE_MODES.LINEAR, 8);
}
function createEmptyCircleTexture (renderer) {
const emptyCircle = new PIXI.Graphics();
emptyCircle.alpha = 0.5;
emptyCircle.lineStyle(
OUTER_CIRCLE_LINE_WIDTH,
OUTER_CIRCLE_COLOR,
1,
0
);
emptyCircle.drawCircle(
0,
0,
OUTER_CIRCLE_RADIUS
);
const texture = generateTexture(renderer, emptyCircle);
texture.defaultAnchor.set(0.5, 0.5);
return texture;
}
function createInnerCircleTexture (renderer) {
const centerCircle = new PIXI.Graphics();
centerCircle.beginFill(INNER_CIRCLE_COLOR, 1.0);
centerCircle.drawCircle(
0,
0,
INNER_CIRCLE_RADIUS
);
centerCircle.endFill();
const texture = generateTexture(renderer, centerCircle);
texture.defaultAnchor.set(0.5, 0.5);
return texture;
}
class EuclideanVisualizerRenderer {
constructor(props) {
this.props = props;
const {
size,
canvasEl
} = props;
this.pixiApp = new PIXI.Application({
height: size,
width: size,
view: canvasEl,
transparent: true,
resolution: 1,
antialias: true
});
//this.pixiApp.renderer.backgroundColor = 0x061639;
this.pixiApp.start();
this.emptyCircleTexture = createEmptyCircleTexture(this.pixiApp.renderer);
this.innerCircleTexture = createInnerCircleTexture(this.pixiApp.renderer);
const container = new PIXI.Container();
const outer = new PIXI.Sprite(this.emptyCircleTexture);
const inner = new PIXI.Sprite(this.innerCircleTexture);
container.addChild(outer);
container.addChild(inner);
container.position.set(OUTER_CIRCLE_RADIUS, OUTER_CIRCLE_RADIUS);
this.pixiApp.stage.addChild(container);
}
render(props) {
const {
euclideanNumHits,
euclideanTotalNumHits
} = props;
const {
stage
} = this.pixiApp;
const {
size
} = this.props;
const euclideanCircleRadius = 0.5 * size - OUTER_CIRCLE_RADIUS;
stage.removeChildren();
const circleContainer = new PIXI.Container();
circleContainer.position.set(
euclideanCircleRadius + OUTER_CIRCLE_RADIUS,
euclideanCircleRadius + OUTER_CIRCLE_RADIUS
);
const pattern = _.flatten(
Array(2).fill(bjorklund(euclideanTotalNumHits, euclideanNumHits))
).slice(0, euclideanTotalNumHits);
//const pattern = [1, 1, 1, 1];
//const pattern = [ 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0, 1, 0, 0, 0 ];
//const pattern = [ 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 1, 0, 0, 0 ];
const segmentAngle = Math.PI * 2.0 / pattern.length;
const polygonPoints = [];
let i;
for (i = 0; i < pattern.length; i++) {
// calculate dot position
const dotPosition = {
x: euclideanCircleRadius * Math.cos(segmentAngle * i),
y: euclideanCircleRadius * Math.sin(segmentAngle * i)
};
// create a container for the dots in that position
const dotContainer = new PIXI.Container();
dotContainer.position.set(dotPosition.x, dotPosition.y);
// inner and outer dots
const outer = new PIXI.Sprite(this.emptyCircleTexture);
const inner = new PIXI.Sprite(this.innerCircleTexture);
if (pattern[i] === 0) {
inner.visible = false;
} else {
polygonPoints.push(dotContainer.x, dotContainer.y);
}
dotContainer.addChild(outer);
dotContainer.addChild(inner);
circleContainer.addChild(dotContainer);
}
// draw polygon connecting active dots
const polygon = new PIXI.Graphics();
polygon.lineStyle(
POLYGON_LINE_WIDTH,
POLYGON_COLOR,
1,
0
);
// add last line segment connecting fully
polygonPoints.push(polygonPoints[0], polygonPoints[1]);
polygon.drawPolygon(polygonPoints);
circleContainer.addChild(polygon);
stage.addChild(circleContainer);
}
}
export default EuclideanVisualizerRenderer;