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Copy pathlayer.ts
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407 lines (350 loc) · 10.9 KB
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// Copyright 2018 Google LLC
//
// 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.
import {BoardSize, COL_LABELS, Color, otherColor, Coord, Point, Move} from './base'
import {Annotation, Board} from './board'
import {pixelRatio} from './util'
const STAR_POINTS = {
[BoardSize.Nine]: [[2, 2], [2, 6], [6, 2], [6, 6], [4, 4]],
[BoardSize.Nineteen]: [[3, 3], [3, 9], [3, 15],
[9, 3], [9, 9], [9, 15],
[15, 3], [15, 9], [15, 15]],
};
interface DataObj {
[key: string]: any;
}
type DataProp<T> = T | undefined | null;
abstract class Layer {
protected boardToCanvas: (row: number, col: number) => Coord;
constructor(public board: Board) {
this.boardToCanvas = board.boardToCanvas.bind(board);
}
// Returns true if dataObj contained updated data for the layer and it should
// be redrawn.
abstract update(dataObj: DataObj): boolean;
abstract draw(): void;
}
abstract class StaticLayer extends Layer {
update(dataObj: DataObj) {
return false;
}
}
abstract class DataLayer extends Layer {
constructor(board: Board, private dataPropName: string) {
super(board);
}
protected getData<T>(dataObj: any): DataProp<T> {
let prop: any = dataObj[this.dataPropName];
if (prop === undefined) {
return undefined;
}
return prop as T | null;
}
}
class Grid extends StaticLayer {
private style = '#864';
draw() {
let starPointRadius = Math.min(4, Math.max(this.board.stoneRadius / 10, 2.5));
let ctx = this.board.ctx;
let size = this.board.size;
let pr = pixelRatio();
ctx.strokeStyle = this.style;
ctx.lineWidth = pr;
ctx.lineCap = 'round';
ctx.beginPath();
for (let i = 0; i < size; ++i) {
let left = this.boardToCanvas(i, 0);
let right = this.boardToCanvas(i, size - 1);
let top = this.boardToCanvas(0, i);
let bottom = this.boardToCanvas(size - 1, i);
ctx.moveTo(0.5 + Math.round(left.x), 0.5 + Math.round(left.y));
ctx.lineTo(0.5 + Math.round(right.x), 0.5 + Math.round(right.y));
ctx.moveTo(0.5 + Math.round(top.x), 0.5 + Math.round(top.y));
ctx.lineTo(0.5 + Math.round(bottom.x), 0.5 + Math.round(bottom.y));
}
ctx.stroke();
// Draw star points.
ctx.fillStyle = this.style;
ctx.strokeStyle = '';
for (let p of STAR_POINTS[size]) {
let c = this.boardToCanvas(p[0], p[1]);
ctx.beginPath();
ctx.arc(c.x + 0.5, c.y + 0.5, starPointRadius * pr, 0, 2 * Math.PI);
ctx.fill();
}
}
}
class Label extends StaticLayer {
draw() {
let ctx = this.board.ctx;
let size = this.board.size;
let textHeight = Math.floor(0.3 * this.board.stoneRadius);
ctx.font = `${textHeight}px sans-serif`;
ctx.fillStyle = '#9d7c4d';
// Draw column labels.
ctx.textAlign = 'center';
ctx.textBaseline = 'alphabetic';
for (let i = 0; i < size; ++i) {
let c = this.boardToCanvas(-0.66, i);
ctx.fillText(COL_LABELS[i], c.x, c.y);
}
ctx.textBaseline = 'top';
for (let i = 0; i < size; ++i) {
let c = this.boardToCanvas(size - 0.33, i);
ctx.fillText(COL_LABELS[i], c.x, c.y);
}
// Draw row labels.
ctx.textAlign = 'right';
ctx.textBaseline = 'middle';
for (let i = 0; i < size; ++i) {
let c = this.boardToCanvas(i, -0.66);
ctx.fillText((size - i).toString(), c.x, c.y);
}
ctx.textAlign = 'left';
for (let i = 0; i < size; ++i) {
let c = this.boardToCanvas(i, size - 0.33);
ctx.fillText((size - i).toString(), c.x, c.y);
}
}
}
class Caption extends StaticLayer {
constructor(board: Board, private caption: string) {
super(board);
}
draw() {
let ctx = this.board.ctx;
let size = this.board.size;
let textHeight = Math.floor(0.4 * this.board.stoneRadius);
ctx.font = `${textHeight}px sans-serif`;
ctx.fillStyle = '#9d7c4d';
ctx.textAlign = 'center';
ctx.textBaseline = 'top';
let c = this.boardToCanvas(size - 0.45, (size - 1) / 2);
ctx.fillText(this.caption, c.x, c.y);
}
}
class HeatMap extends DataLayer {
private colors: Float32Array[] | null = null;
constructor(board: Board, dataPropName: string,
private colorizeFn: (src: number[]) => Float32Array[]) {
super(board, dataPropName);
}
update(dataObj: DataObj) {
let data = this.getData<number[] | null>(dataObj);
if (data === undefined) {
return false;
}
this.colors = data != null ? this.colorizeFn(data) : null;
return true;
}
draw() {
if (!this.colors) {
return;
}
let ctx = this.board.ctx;
let size = this.board.size;
let w = this.board.pointW;
let h = this.board.pointH;
let stones = this.board.stones;
let p = {row: 0, col: 0};
let i = 0;
for (p.row = 0; p.row < size; ++p.row) {
for (p.col = 0; p.col < size; ++p.col) {
let rgba = this.colors[i];
if (stones[i++] != Color.Empty) {
continue;
}
ctx.fillStyle = `rgba(${rgba[0]}, ${rgba[1]}, ${rgba[2]}, ${rgba[3]}`;
let c = this.boardToCanvas(p.row, p.col);
ctx.fillRect(c.x - 0.5 * w, c.y - 0.5 * h, w, h);
}
}
}
}
abstract class StoneBaseLayer extends DataLayer {
protected blackStones: Point[] = [];
protected whiteStones: Point[] = [];
constructor(board: Board, dataPropName: string, protected alpha: number) {
super(board, dataPropName);
}
draw() {
this.board.drawStones(this.blackStones, Color.Black, this.alpha);
this.board.drawStones(this.whiteStones, Color.White, this.alpha);
}
}
class BoardStones extends StoneBaseLayer {
constructor(board: Board, dataPropName = 'stones', alpha = 1) {
super(board, dataPropName, alpha);
}
update(dataObj: DataObj) {
let stones = this.getData<Color[]>(dataObj);
if (stones === undefined) {
return false;
}
this.blackStones = [];
this.whiteStones = [];
if (stones != null) {
let size = this.board.size;
let i = 0;
for (let row = 0; row < size; ++row) {
for (let col = 0; col < size; ++col) {
let color = stones[i++];
if (color == Color.Black) {
this.blackStones.push({row: row, col: col});
} else if (color == Color.White) {
this.whiteStones.push({row: row, col: col});
}
}
}
}
return true;
}
}
interface VariationLabel {
p: Point;
s: string;
}
class Variation extends StoneBaseLayer {
private blackLabels: VariationLabel[] = [];
private whiteLabels: VariationLabel[] = [];
constructor(board: Board, dataPropName: string, alpha = 0.4) {
super(board, dataPropName, alpha);
}
update(dataObj: DataObj) {
let variation = this.getData<Move[]>(dataObj);
if (variation === undefined) {
return false;
}
let toPlay = this.board.toPlay;
let size = this.board.size;
this.blackStones = [];
this.whiteStones = [];
this.blackLabels = [];
this.whiteLabels = [];
if (variation == null) {
// We assume here that every update contains a new variation.
// The search variation will by definition be different every time and
// the engine only sends a principle variation when it changes, so this is
// currently a safe assumption.
// TODO(tommadams): return false if the varation was previously empty.
return true;
}
// The playedCount array keeps track of the number of times each point on
// the board is played within the variation. For points that are played more
// we only show the earliest move and mark it with an asterisk.
let playedCount = new Uint16Array(size * size);
let firstPlayed: VariationLabel[] = [];
toPlay = otherColor(toPlay);
for (let i = 0; i < variation.length; ++i) {
let move = variation[i];
toPlay = otherColor(toPlay);
if (move == 'pass' || move == 'resign') {
continue;
}
let idx = move.row * size + move.col;
let label = {p: move, s: (i + 1).toString()};
let count = ++playedCount[idx];
if (toPlay == Color.Black) {
this.blackStones.push(move);
if (count == 1) {
this.blackLabels.push(label);
}
} else {
this.whiteStones.push(move);
if (count == 1) {
this.whiteLabels.push(label);
}
}
if (count == 1) {
firstPlayed[idx] = label;
} else if (count == 2) {
firstPlayed[idx].s += '*';
}
}
return true;
}
draw() {
super.draw()
let ctx = this.board.ctx;
let size = this.board.size;
let textHeight = Math.floor(0.5 * this.board.stoneRadius);
ctx.font = `${textHeight}px sans-serif`;
ctx.textAlign = 'center';
ctx.textBaseline = 'middle';
this.drawLabels(this.blackLabels, '#fff');
this.drawLabels(this.whiteLabels, '#000');
}
private drawLabels(labels: VariationLabel[], style: string) {
let ctx = this.board.ctx;
ctx.fillStyle = style;
for (let label of labels) {
let c = this.boardToCanvas(label.p.row, label.p.col);
ctx.fillText(label.s, c.x, c.y);
}
}
}
class Annotations extends DataLayer {
private annotations: Annotation[] = [];
constructor(board: Board, dataPropName = 'annotations') {
super(board, dataPropName);
}
update(dataObj: DataObj) {
let annotations = this.getData<Annotation[]>(dataObj);
if (annotations === undefined) {
return false;
}
this.annotations = annotations != null ? annotations : [];
return true;
}
draw() {
if (this.annotations == null || this.annotations.length == 0) {
return;
}
let ctx = this.board.ctx;
for (let annotation of this.annotations) {
let c = this.boardToCanvas(annotation.p.row, annotation.p.col);
let sr = this.board.stoneRadius;
switch (annotation.shape) {
case Annotation.Shape.Dot:
ctx.fillStyle = annotation.color;
ctx.beginPath();
ctx.arc(c.x, c.y, 0.08 * sr, 0, 2 * Math.PI);
ctx.fill();
break;
case Annotation.Shape.Triangle:
ctx.lineWidth = 3 * pixelRatio();
ctx.lineCap = 'round';
ctx.strokeStyle = annotation.color;
ctx.beginPath();
ctx.moveTo(c.x, c.y - 0.35 * sr);
ctx.lineTo(c.x - 0.3 * sr, c.y + 0.21 * sr);
ctx.lineTo(c.x + 0.3 * sr, c.y + 0.21 * sr);
ctx.lineTo(c.x, c.y - 0.35 * sr);
ctx.stroke();
break;
}
}
}
}
export {
Annotation,
Annotations,
BoardStones,
Caption,
DataObj,
Grid,
HeatMap,
Label,
Layer,
Variation,
}