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-rw-r--r--src/lib.ts136
1 files changed, 59 insertions, 77 deletions
diff --git a/src/lib.ts b/src/lib.ts
index e8ed448..51bd2a4 100644
--- a/src/lib.ts
+++ b/src/lib.ts
@@ -5,8 +5,6 @@
import {moduloPositive, intToOrdinal, getNumTrailingZeros} from './util';
import {RBTree} from './rbtree';
-export const DEBUG = true;
-
// ========== For calendar conversion (mostly copied from backend/hist_data/cal.py) ==========
export function gregorianToJdn(year: number, month: number, day: number): number {
@@ -77,6 +75,7 @@ export function getDaysInMonth(year: number, month: number){
export const MIN_CAL_YEAR = -4713; // Earliest year where months/day scales are usable
export const MONTH_NAMES = ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec'];
+// (Same as in backend/hist_data/cal.py)
export class HistDate {
gcal: boolean | null;
year: number;
@@ -168,50 +167,6 @@ export class HistDate {
}
}
- toYearString(){
- if (this.year >= 1000){
- return String(this.year);
- } else if (this.year > 0){
- return String(this.year) + ' AD';
- } else if (this.year > -1e3){
- return String(-this.year) + ' BC';
- } else if (this.year > -1e6){
- if (this.year % 1e3 == 0){
- return String(Math.floor(-this.year / 1e3)) + 'k BC';
- } else if (this.year % 100 == 0){
- return String(Math.floor(-this.year / 100) / 10) + 'k BC';
- } else {
- return String(-this.year) + ' BC';
- }
- } else if (this.year > -1e9){
- if (this.year % 1e6 == 0){
- return String(Math.floor(-this.year / 1e6)) + ' mya';
- } else if (this.year % 1e3 == 0){
- return String(Math.floor(-this.year / 1e3) / 1e3) + ' mya';
- } else {
- return String(this.year.toLocaleString());
- }
- } else {
- if (this.year % 1e9 == 0){
- return String(Math.floor(-this.year / 1e9)) + ' bya';
- } else if (this.year % 1e6 == 0){
- return String(Math.floor(-this.year / 1e6) / 1e3) + ' bya';
- } else {
- return String(this.year.toLocaleString());
- }
- }
- }
-
- toTickString(){
- if (this.month == 1 && this.day == 1){
- return this.toYearString();
- } else if (this.day == 1){
- return MONTH_NAMES[this.month - 1];
- } else {
- return intToOrdinal(this.day);
- }
- }
-
toInt(){ // Used for v-for keys
return this.day + this.month * 50 + this.year * 1000;
}
@@ -224,9 +179,6 @@ export class YearDate extends HistDate {
declare day: 1;
constructor(year: number){
- // Note: Intentionally not enforcing year < MIN_CAL_YEAR here. This does mean a YearDate can be
- // interpreted as the same day as a CalDate, but it also avoids having HistEvents that
- // span across MIN_CAL_YEAR that have a mix of YearDates and CalDates.
super(null, year, 1, 1);
}
}
@@ -249,6 +201,7 @@ export const MIN_CAL_DATE = new CalDate(MIN_CAL_YEAR, 1, 1);
// ========== For event representation ==========
+// (Same as in backend/hist_data/cal.py)
export class HistEvent {
id: number;
title: string;
@@ -275,6 +228,7 @@ export class HistEvent {
}
}
+// (Same as in backend/hist_data/cal.py)
export class ImgInfo {
url: string;
license: string;
@@ -289,6 +243,7 @@ export class ImgInfo {
}
}
+// (Same as in backend/hist_data/cal.py)
export class EventInfo {
event: HistEvent;
desc: string | null;
@@ -310,6 +265,51 @@ export function cmpHistEvent(event: HistEvent, event2: HistEvent){
// ========== For [event] date display ==========
+export function dateToYearStr(date: HistDate){
+ const year = date.year;
+ if (year >= 1000){
+ return String(year);
+ } else if (year > 0){
+ return String(year) + ' AD';
+ } else if (year > -1e3){
+ return String(-year) + ' BC';
+ } else if (year > -1e6){
+ if (year % 1e3 == 0){
+ return String(Math.floor(-year / 1e3)) + 'k BC';
+ } else if (year % 100 == 0){
+ return String(Math.floor(-year / 100) / 10) + 'k BC';
+ } else {
+ return String(-year) + ' BC';
+ }
+ } else if (year > -1e9){
+ if (year % 1e6 == 0){
+ return String(Math.floor(-year / 1e6)) + ' mya';
+ } else if (year % 1e3 == 0){
+ return String(Math.floor(-year / 1e3) / 1e3) + ' mya';
+ } else {
+ return String(year.toLocaleString());
+ }
+ } else {
+ if (year % 1e9 == 0){
+ return String(Math.floor(-year / 1e9)) + ' bya';
+ } else if (year % 1e6 == 0){
+ return String(Math.floor(-year / 1e6) / 1e3) + ' bya';
+ } else {
+ return String(year.toLocaleString());
+ }
+ }
+}
+
+export function dateToTickStr(date: HistDate){
+ if (date.month == 1 && date.day == 1){
+ return dateToYearStr(date);
+ } else if (date.day == 1){
+ return MONTH_NAMES[date.month - 1];
+ } else {
+ return intToOrdinal(date.day);
+ }
+}
+
export function dateToDisplayStr(date: HistDate){
if (date.year <= -1e4){ // N.NNN billion/million/thousand years ago
if (date.year <= -1e9){
@@ -334,7 +334,7 @@ export function dateToDisplayStr(date: HistDate){
}
}
-// Converts a date with uncertain end bound to string for display
+// Converts a date with imprecise bounds into a string for display
export function boundedDateToStr(start: HistDate, end: HistDate | null) : string {
if (end == null){
return dateToDisplayStr(start);
@@ -344,6 +344,7 @@ export function boundedDateToStr(start: HistDate, end: HistDate | null) : string
if (startStr == endStr){
return startStr;
}
+
if (start.gcal == null && end.gcal == null){
if (startStr.endsWith(' years ago') && endStr.endsWith(' years ago')){
const dateRegex = /^(.*) (.*) years ago$/;
@@ -409,7 +410,7 @@ export async function queryServer(params: URLSearchParams, serverDataUrl=SERVER_
const response = await fetch(url.toString());
responseObj = await response.json();
} catch (error){
- console.log(`Error with querying ${url.toString()}: ${error}`);
+ console.log(`ERROR: Error with querying ${url.toString()}: ${error}`);
return null;
}
return responseObj;
@@ -494,35 +495,16 @@ export function jsonToImgInfo(json: ImgInfoJson | null): ImgInfo | null {
export const MIN_DATE = new YearDate(-13.8e9);
export const MAX_DATE = new CalDate(2030, 1, 1);
+
+// (Same as in /backend/hist_data/cal.py)
export const MONTH_SCALE = -1;
export const DAY_SCALE = -2;
export const SCALES = [1e9, 1e8, 1e7, 1e6, 1e5, 1e4, 1e3, 100, 10, 1, MONTH_SCALE, DAY_SCALE];
- // The timeline will be divided into units of SCALES[0], then SCALES[1], etc
- // Positive ints represent numbers of years, -1 represents 1 month, -2 represents 1 day
-
-if (DEBUG){ // Validate SCALES
- if (SCALES[SCALES.length - 1] != DAY_SCALE
- || SCALES[SCALES.length - 2] != MONTH_SCALE
- || SCALES[SCALES.length - 3] != 1){
- throw new Error('SCALES must end with [1, MONTH_SCALE, DAY_SCALE]');
- }
- for (let i = 1; i < SCALES.length - 2; i++){
- if (SCALES[i] <= 0){
- throw new Error('SCALES must only have positive ints before MONTH_SCALE');
- }
- if (SCALES[i-1] <= SCALES[i]){
- throw new Error('SCALES must hold decreasing values');
- }
- if (SCALES[i-1] % SCALES[i] > 0){
- throw new Error('Each positive int in SCALES must divide the previous int');
- }
- }
-}
-export function stepDate( // Steps a date N units along a scale
- date: HistDate, scale: number, {forward=true, count=1, inplace=false} = {}): HistDate {
- // If stepping by month or years, leaves day value unchanged
- // Does not account for stepping a CalDate into before MIN_CAL_YEAR
+// Steps a date N units along a scale
+export function stepDate(date: HistDate, scale: number, {forward=true, count=1, inplace=false} = {}): HistDate {
+ // If stepping by month or years, leaves day value unchanged.
+ // Does not account for stepping a CalDate into before MIN_CAL_YEAR.
const newDate = inplace ? date : date.clone();
if (count < 0){
count = -count;
@@ -667,8 +649,8 @@ export function getEventPrecision(event: HistEvent): number {
return Number.POSITIVE_INFINITY;
}
-// For a YearDate and sub-yearly scale, uses the first day of the YearDate's year
export function dateToUnit(date: HistDate, scale: number): number {
+ // For a YearDate and sub-yearly scale, uses the first day of the YearDate's year
if (scale >= 1){
return Math.floor(date.year / scale);
} else if (scale == MONTH_SCALE){
generated by cgit v1.2.3 (git 2.39.1) at 2026-04-24 23:02:39 +0000