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Station and train colors

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This commit is contained in:
Tyler Hallada
2018-04-10 01:31:49 -04:00
parent e686a854d8
commit 902645d46a
3 changed files with 57 additions and 19 deletions
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15
src/utils.ts
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@@ -37,3 +37,18 @@ export const distance = (pointA: PIXI.Point, pointB: PIXI.Point): number => {
const distY = pointA.y - pointB.y;
return Math.sqrt((distX * distX) + (distY * distY));
};
export const rangeMap = (num: number, inMin: number, inMax: number,
outMin: number, outMax: number): number => (
(num - inMin) * (outMax - outMin) / (inMax - inMin) + outMin
);
// tslint:disable no-bitwise
export const nthByte = (num: number, n: number): number => ((num >> (8 * n)) & 0xff);
// FIXME: pretty sure this is wrong, just use a color library instead and then convert to hex
export const avgHexColor = (colorA: number, colorB: number): number => (
(Math.round((nthByte(colorA, 2) + nthByte(colorB, 2)) / 2) & 0xFF) |
((Math.round((nthByte(colorA, 1) + nthByte(colorB, 1)) / 2) & 0xFF) << 8) |
((Math.round((nthByte(colorA, 0) + nthByte(colorB, 0)) / 2) & 0x0F) << 16)
);