42 lines
1.7 KiB
JavaScript
42 lines
1.7 KiB
JavaScript
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import { mix } from '../../utils/mix.mjs';
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function calcLength(axis) {
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return axis.max - axis.min;
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}
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function isNear(value, target = 0, maxDistance = 0.01) {
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return Math.abs(value - target) <= maxDistance;
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}
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function calcAxisDelta(delta, source, target, origin = 0.5) {
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delta.origin = origin;
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delta.originPoint = mix(source.min, source.max, delta.origin);
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delta.scale = calcLength(target) / calcLength(source);
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if (isNear(delta.scale, 1, 0.0001) || isNaN(delta.scale))
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delta.scale = 1;
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delta.translate =
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mix(target.min, target.max, delta.origin) - delta.originPoint;
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if (isNear(delta.translate) || isNaN(delta.translate))
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delta.translate = 0;
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}
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function calcBoxDelta(delta, source, target, origin) {
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calcAxisDelta(delta.x, source.x, target.x, origin ? origin.originX : undefined);
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calcAxisDelta(delta.y, source.y, target.y, origin ? origin.originY : undefined);
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}
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function calcRelativeAxis(target, relative, parent) {
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target.min = parent.min + relative.min;
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target.max = target.min + calcLength(relative);
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}
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function calcRelativeBox(target, relative, parent) {
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calcRelativeAxis(target.x, relative.x, parent.x);
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calcRelativeAxis(target.y, relative.y, parent.y);
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}
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function calcRelativeAxisPosition(target, layout, parent) {
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target.min = layout.min - parent.min;
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target.max = target.min + calcLength(layout);
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}
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function calcRelativePosition(target, layout, parent) {
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calcRelativeAxisPosition(target.x, layout.x, parent.x);
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calcRelativeAxisPosition(target.y, layout.y, parent.y);
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}
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export { calcAxisDelta, calcBoxDelta, calcLength, calcRelativeAxis, calcRelativeAxisPosition, calcRelativeBox, calcRelativePosition, isNear };
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