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https://github.com/scratchfoundation/scratch-paint.git
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36 lines
971 B
JavaScript
36 lines
971 B
JavaScript
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import paper from 'paper';
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const checkPointsClose = function (startPos, eventPoint, threshold) {
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const xOff = Math.abs(startPos.x - eventPoint.x);
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const yOff = Math.abs(startPos.y - eventPoint.y);
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if (xOff < threshold && yOff < threshold) {
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return true;
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}
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return false;
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};
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const getRandomInt = function (min, max) {
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return Math.floor(Math.random() * (max - min)) + min;
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};
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const getRandomBoolean = function () {
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return getRandomInt(0, 2) === 1;
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};
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// Thanks Mikko Mononen! https://github.com/memononen/stylii
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const snapDeltaToAngle = function (delta, snapAngle) {
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let angle = Math.atan2(delta.y, delta.x);
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angle = Math.round(angle / snapAngle) * snapAngle;
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const dirx = Math.cos(angle);
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const diry = Math.sin(angle);
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const d = (dirx * delta.x) + (diry * delta.y);
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return new paper.Point(dirx * d, diry * d);
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};
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export {
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checkPointsClose,
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getRandomInt,
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getRandomBoolean,
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snapDeltaToAngle
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};
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