60 lines
1.6 KiB
TypeScript
60 lines
1.6 KiB
TypeScript
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import { ExcalidrawElement } from "./types";
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export function isInvisiblySmallElement(element: ExcalidrawElement): boolean {
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return element.width === 0 && element.height === 0;
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}
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/**
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* Makes a perfect shape or diagonal/horizontal/vertical line
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*/
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export function getPerfectElementSize(
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elementType: string,
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width: number,
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height: number
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): { width: number; height: number } {
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const absWidth = Math.abs(width);
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const absHeight = Math.abs(height);
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if (elementType === "line" || elementType === "arrow") {
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if (absHeight < absWidth / 2) {
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height = 0;
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} else if (absWidth < absHeight / 2) {
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width = 0;
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} else {
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height = absWidth * Math.sign(height);
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}
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} else if (elementType !== "selection") {
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height = absWidth * Math.sign(height);
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}
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return { width, height };
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}
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export function resizePerfectLineForNWHandler(
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element: ExcalidrawElement,
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x: number,
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y: number
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) {
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const anchorX = element.x + element.width;
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const anchorY = element.y + element.height;
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const distanceToAnchorX = x - anchorX;
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const distanceToAnchorY = y - anchorY;
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if (Math.abs(distanceToAnchorX) < Math.abs(distanceToAnchorY) / 2) {
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element.x = anchorX;
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element.width = 0;
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element.y = y;
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element.height = -distanceToAnchorY;
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} else if (Math.abs(distanceToAnchorY) < Math.abs(element.width) / 2) {
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element.y = anchorY;
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element.height = 0;
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} else {
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element.x = x;
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element.width = -distanceToAnchorX;
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element.height =
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Math.sign(distanceToAnchorY) *
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Math.sign(distanceToAnchorX) *
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element.width;
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element.y = anchorY - element.height;
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}
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}
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