54 lines
2.4 KiB
Plaintext
54 lines
2.4 KiB
Plaintext
import { percent, mixNumber } from 'motion-dom';
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import { scalePoint } from './delta-apply.mjs';
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/**
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* Remove a delta from a point. This is essentially the steps of applyPointDelta in reverse
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*/
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function removePointDelta(point, translate, scale, originPoint, boxScale) {
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point -= translate;
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point = scalePoint(point, 1 / scale, originPoint);
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if (boxScale !== undefined) {
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point = scalePoint(point, 1 / boxScale, originPoint);
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}
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return point;
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}
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/**
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* Remove a delta from an axis. This is essentially the steps of applyAxisDelta in reverse
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*/
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function removeAxisDelta(axis, translate = 0, scale = 1, origin = 0.5, boxScale, originAxis = axis, sourceAxis = axis) {
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if (percent.test(translate)) {
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translate = parseFloat(translate);
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const relativeProgress = mixNumber(sourceAxis.min, sourceAxis.max, translate / 100);
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translate = relativeProgress - sourceAxis.min;
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}
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if (typeof translate !== "number")
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return;
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let originPoint = mixNumber(originAxis.min, originAxis.max, origin);
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if (axis === originAxis)
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originPoint -= translate;
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axis.min = removePointDelta(axis.min, translate, scale, originPoint, boxScale);
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axis.max = removePointDelta(axis.max, translate, scale, originPoint, boxScale);
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}
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/**
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* Remove a transforms from an axis. This is essentially the steps of applyAxisTransforms in reverse
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* and acts as a bridge between motion values and removeAxisDelta
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*/
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function removeAxisTransforms(axis, transforms, [key, scaleKey, originKey], origin, sourceAxis) {
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removeAxisDelta(axis, transforms[key], transforms[scaleKey], transforms[originKey], transforms.scale, origin, sourceAxis);
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}
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/**
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* The names of the motion values we want to apply as translation, scale and origin.
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*/
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const xKeys = ["x", "scaleX", "originX"];
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const yKeys = ["y", "scaleY", "originY"];
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/**
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* Remove a transforms from an box. This is essentially the steps of applyAxisBox in reverse
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* and acts as a bridge between motion values and removeAxisDelta
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*/
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function removeBoxTransforms(box, transforms, originBox, sourceBox) {
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removeAxisTransforms(box.x, transforms, xKeys, originBox ? originBox.x : undefined, sourceBox ? sourceBox.x : undefined);
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removeAxisTransforms(box.y, transforms, yKeys, originBox ? originBox.y : undefined, sourceBox ? sourceBox.y : undefined);
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}
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export { removeAxisDelta, removeAxisTransforms, removeBoxTransforms, removePointDelta };
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