export default class DrawHexagon {
	constructor(settings) {
		this.flatTopCornerX = [];
		this.flatTopCornerY = [];
		this.pointyTopCornerX = [];
		this.pointyTopCornerY = [];

		// dice dots, 0,0 is center
		// TODO: if pointy: [0].concat(flatTop), if flat: [0].concat(pointy)
//		this.hexDotX = [0];
//		this.hexDotY = [0];

		let hexSides = 6;
		let hexSlices = 24;
		for (let hexSlice = 0; hexSlice < hexSlices; hexSlice++) {
			let x = parseInt(Math.cos(((hexSlice / hexSlices) * hexSides) * (2 * Math.PI) / hexSides) * 1000) / 1000;
			let y = parseInt(Math.sin(((hexSlice / hexSlices) * hexSides) * (2 * Math.PI) / hexSides) * 1000) / 1000;

			if ((hexSlice % 4) === 0) {
				let cur = hexSlice / 4;
				this.flatTopCornerX[cur] = x;
				this.flatTopCornerY[cur] = y;
			}

			if (((hexSlice-2) % 4) === 0) {
				let cur = (hexSlice-2) / 4;
				this.pointyTopCornerX[cur] = x;
				this.pointyTopCornerY[cur] = y;
			}
		}
	}

	outline(context, cell) {
		let x = cell.x;
		let y = cell.y;
		let scale = cell.scale;
		let hexCornerX = cell.pointyTop ? this.pointyTopCornerX : this.flatTopCornerX;
		let hexCornerY = cell.pointyTop ? this.pointyTopCornerY : this.flatTopCornerY;

		context.beginPath();
		context.moveTo(x + scale * hexCornerX[0], y + scale * hexCornerY[0]);
		context.lineTo(x + scale * hexCornerX[1], y + scale * hexCornerY[1]);
		context.lineTo(x + scale * hexCornerX[2], y + scale * hexCornerY[2]);
		context.lineTo(x + scale * hexCornerX[3], y + scale * hexCornerY[3]);
		context.lineTo(x + scale * hexCornerX[4], y + scale * hexCornerY[4]);
		context.lineTo(x + scale * hexCornerX[5], y + scale * hexCornerY[5]);
		context.closePath();

		context.lineWidth = cell.width;
		context.strokeStyle = cell.getColor();
		context.stroke();
	}

	filled(context, cell) {
		let x = cell.x;
		let y = cell.y;
		let scale = cell.scale;
		let hexCornerX = cell.pointyTop ? this.pointyTopCornerX : this.flatTopCornerX;
		let hexCornerY = cell.pointyTop ? this.pointyTopCornerY : this.flatTopCornerY;

		context.beginPath();
		context.moveTo(x + scale * hexCornerX[0], y + scale * hexCornerY[0]);
		context.lineTo(x + scale * hexCornerX[1], y + scale * hexCornerY[1]);
		context.lineTo(x + scale * hexCornerX[2], y + scale * hexCornerY[2]);
		context.lineTo(x + scale * hexCornerX[3], y + scale * hexCornerY[3]);
		context.lineTo(x + scale * hexCornerX[4], y + scale * hexCornerY[4]);
		context.lineTo(x + scale * hexCornerX[5], y + scale * hexCornerY[5]);

		context.fillStyle = cell.getColor();
		context.fill();
	}
}