File size: 1,499 Bytes
8766bc5 | 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 | export const getSaliencyColor = (value: number): string => {
var color: [number, number, number] | null = null;
if (value < 0) {
color = [52, 152, 219];
} else {
color = [231, 76, 60];
}
return colorToString(interpolate(Math.abs(value), [255, 255, 255], color));
};
const interpolate = (
val: number,
rgb1: [number, number, number],
rgb2: [number, number, number]
): [number, number, number] => {
if (val > 1) {
val = 1;
}
val = Math.sqrt(val);
var rgb: [number, number, number] = [0, 0, 0];
var i;
for (i = 0; i < 3; i++) {
rgb[i] = Math.round(rgb1[i] * (1.0 - val) + rgb2[i] * val);
}
return rgb;
};
const colorToString = (rgb: [number, number, number]): string => {
return "rgb(" + rgb[0] + ", " + rgb[1] + ", " + rgb[2] + ")";
};
export function getObjectFitSize(
contains: boolean /* true = contain, false = cover */,
containerWidth: number,
containerHeight: number,
width: number,
height: number
): { width: number; height: number; x: number; y: number } {
var doRatio = width / height;
var cRatio = containerWidth / containerHeight;
var targetWidth = 0;
var targetHeight = 0;
var test = contains ? doRatio > cRatio : doRatio < cRatio;
if (test) {
targetWidth = containerWidth;
targetHeight = targetWidth / doRatio;
} else {
targetHeight = containerHeight;
targetWidth = targetHeight * doRatio;
}
return {
width: targetWidth,
height: targetHeight,
x: (containerWidth - targetWidth) / 2,
y: (containerHeight - targetHeight) / 2
};
}
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