Reorganize a bit, write some more

blog/2024-11-15-playing-with-fire/src/coefs.ts

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+export interface Coefs {
+    a: number, b: number, c: number,
+    d: number, e: number, f: number
+}

blog/2024-11-15-playing-with-fire/src/julia.ts

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+// hidden-start
+import { Variation } from './variations'
+// hidden-end
+export const julia: Variation = (x, y) => {
+    const r = Math.sqrt(Math.pow(x, 2) + Math.pow(y, 2));
+    const theta = Math.atan2(x, y);
+    const omega = Math.random() > 0.5 ? 0 : Math.PI;
+
+    return [
+        r * Math.cos(theta / 2 + omega),
+        r * Math.sin(theta / 2 + omega)
+    ]
+}

blog/2024-11-15-playing-with-fire/src/linear.ts

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+// hidden-start
+import {Variation} from "./variations"
+//hidden-end
+export const linear: Variation = (x, y) => [x, y];

blog/2024-11-15-playing-with-fire/src/params.ts

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+/**
+ * Parameters taken from the reference .flame file,
+ * translated into something that's easier to work with.
+ */
+
+import { Coefs } from './coefs';
+import { Transform } from './transform';
+import { linear } from './linear'
+import { julia } from './julia'
+import { popcorn } from './popcorn'
+import { pdj } from './pdj'
+
+export const identityCoefs: Coefs = {
+    a: 1, b: 0, c: 0,
+    d: 0, e: 1, f: 0,
+}
+
+export const xform1Weight = 0.56453495;
+export const xform1Coefs = {
+    a: -1.381068, b: -1.381068, c: 0,
+    d: 1.381068, e: -1.381068, f: 0,
+}
+export const xform1CoefsPost = identityCoefs;
+export const xform1Variations = [
+    [1, julia]
+]
+export const xform1Color = 0;
+
+export const xform2Weight = 0.013135;
+export const xform2Coefs = {
+    a: 0.031393, b: 0.031367, c: 0,
+    d: -0.031367, e: 0.031393, f: 0,
+}
+export const xform2CoefsPost = {
+    a: 1, b: 0, c: 0.241352,
+    d: 0, e: 1, f: 0.271521,
+}
+export const xform2Variations = [
+    [1, linear],
+    [1, popcorn(xform2Coefs)]
+]
+export const xform2Color = 0.844;
+
+export const xform3Weight = 0.42233;
+export const xform3Coefs = {
+    a: 1.51523, b: -3.048677, c: 0.724135,
+    d: 0.740356, e: -1.455964, f: -0.362059,
+}
+export const xform3CoefsPost = identityCoefs;
+export const xform3Variations = [
+    [1, pdj(1.09358, 2.13048, 2.54127, 2.37267)]
+];
+export const xform3Color = 0.349;
+
+export const xformFinalCoefs = {
+    a: 2, b: 0, c: 0,
+    d: 0, e: 2, f: 0
+}
+export const xformFinalCoefsPost = identityCoefs;
+export const xformFinalVariations = [
+    [1, julia]
+]
+export const xformFinalColor = 0;
+
+export const palette =
+    "7E3037762C45722B496E2A4E6A2950672853652754632656" +
+    "5C265C5724595322574D2155482153462050451F4E441E4D" +
+    "431E4C3F1E473F1E453F1E433F1E3F3F1E3B3E1E393E1E37" +
+    "421D36431C38451C3A471B3B491B3C4A1A3C4B1A3D4D1A3E" +
+    "4F19405318435517445817465A16475D15495E154960154A" +
+    "65134E6812506B12526E1153711055720F55740F55770E57" +
+    "7A0E59810C58840B58880A588B09588F0858910756930755" +
+    "9A05539D0451A1034FA5024BA90147AA0046AC0045B00242" +
+    "B4043DBB0634BE082EC20A29C30B27C50C26C90F1DCC1116" +
+    "D32110D6280EDA300CDC380ADF4109E04508E24A08E45106" +
+    "E75704EA6402EC6B01EE7300EE7600EF7A00F07E00F18300" +
+    "F29000F29300F39600F39900F39C00F3A000F3A100F3A201" +
+    "F2A502F1A805F0A906EFAA08EEA909EEA80AEDA60CEBA50F" +
+    "E5A313E1A113DD9F13DB9E13D99D14D49C15D09815CC9518" +
+    "C79318BE8B1ABB891BB9871DB4811FB07D1FAB7621A67123" +
+    "9C6227975C289256299053298E502A89482C853F2D803A2E" +
+    "7E3037762C45742B47722B496E2A4E6A2951672853632656" +
+    "5C265C5724595322575022564E2255482153452050451F4E" +
+    "431E4C3F1E473E1D463D1D453F1E43411E413F1E3B3E1E37" +
+    "421D36421D38431D3B451C3A471B3A491B3C4B1A3D4D1A3E" +
+    "4F19405318435418445518455817465A16475D154960154A" +
+    "65134E66124F6812506B12526E1153711055740F55770E57" +
+    "7A0E597E0D57810C58840B58880A588B09588F0858930755" +
+    "9A05539C04529E0452A1034FA5024BA90147AC0045B00242" +
+    "B4043DB7053ABB0634BE0831C20A29C50C26C90F1DCC1116" +
+    "D01711D32110D72A0EDA300CDD390ADF4109E24A08E45106" +
+    "E75704E95F03EA6402EC6C01EE7300EF7A00F07E00F18300" +
+    "F28900F29000F39300F39600F39C00F3A000F3A100F3A201" +
+    "F2A502F2A503F1A805F0A807EFAA08EEA80AEDA60CEBA50F" +
+    "E9A411E5A313E1A113DD9F13D99D14D49C15D09815CC9518" +
+    "C79318C38F1ABE8B1AB9871DB4811FB07D1FAB7621A67123" +
+    "A16A249C6227975E289256298E502A89482C853F2D803A2E"

blog/2024-11-15-playing-with-fire/src/pdj.ts

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+// hidden-start
+import { Variation } from './variations'
+//hidden-end
+export function pdj(a: number, b: number, c: number, d: number): Variation {
+    return (x, y) => [
+        Math.sin(a * y) - Math.cos(b * x),
+        Math.sin(c * x) - Math.cos(d * y)
+    ]
+}

blog/2024-11-15-playing-with-fire/src/popcorn.ts

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+// hidden-start
+import {Coefs} from './coefs'
+import {Variation} from './variations'
+// hidden-end
+export function popcorn({c, f}: Coefs): Variation {
+    return (x, y) => [
+        x + c * Math.sin(Math.tan(3 * y)),
+        y + f * Math.sin(Math.tan(3 * x))
+    ];
+}

blog/2024-11-15-playing-with-fire/src/transform.ts

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+import { Coefs } from './coefs'
+import { Variation } from './variations'
+
+export interface Transform {
+    coefs: Coefs,
+    variations: [number, Variation][],
+    coefsPost: Coefs,
+    color: number
+}

blog/2024-11-15-playing-with-fire/src/variations.ts

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+export type Variation = (x: number, y: number) => [number, number];