Dylan/excalidraw
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

simplify

Browse Source
This commit is contained in:
Ryan Di 2023-11-29 18:13:51 +08:00
parent 02dc00a47e
commit de32256466
1 changed files with 24 additions and 12 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

36
src/zindex.ts
View File

@ -519,13 +519,13 @@ const randomNumInBetween = (start: number, end: number) => {
return Math.random() * (end - start) + start; return Math.random() * (end - start) + start;
}; };
export const generateFractionalIndex = ({ export const generateFractionalIndex = (
start = FRACTIONAL_INDEX_FLOOR, predecessorElement: ExcalidrawElement | undefined,
end = FRACTIONAL_INDEX_CEILING, successorElement: ExcalidrawElement | undefined,
}: { ) => {
start?: number; const start = getFractionalIndex(predecessorElement, FRACTIONAL_INDEX_FLOOR);
end?: number; const end = getFractionalIndex(successorElement, FRACTIONAL_INDEX_CEILING);
}) => {
const nextTemp = randomNumInBetween(start, end); const nextTemp = randomNumInBetween(start, end);
return ( return (
(randomNumInBetween(nextTemp, end) + randomNumInBetween(start, nextTemp)) / (randomNumInBetween(nextTemp, end) + randomNumInBetween(start, nextTemp)) /
@ -533,12 +533,24 @@ export const generateFractionalIndex = ({
); );
}; };
/**
*
*/
export const getNextFractionalIndexAt = (
index: number,
allElements: ExcalidrawElement[],
) => {
const predecessor = allElements[index - 1];
const successor = allElements[index + 1];
return generateFractionalIndex(predecessor, successor);
};
/** /**
* normalize the fractional indicies of the elements in the given array such that * normalize the fractional indicies of the elements in the given array such that
* a. all elements have a fraction index between floor and ceiling as defined above * a. all elements have a fraction index between floor and ceiling as defined above
* b. for every element, its fractional index is greater than its predecessor's and smaller than its successor's * b. for every element, its fractional index is greater than its predecessor's and smaller than its successor's
*/ */
export const normalizeFractionalIndexing = ( export const normalizeFractionalIndexing = (
allElements: readonly ExcalidrawElement[], allElements: readonly ExcalidrawElement[],
) => { ) => {
@ -558,10 +570,10 @@ export const normalizeFractionalIndexing = (
successorElement, successorElement,
) )
) { ) {
const nextFractionalIndex = generateFractionalIndex({ const nextFractionalIndex = generateFractionalIndex(
start: getFractionalIndex(predecessorElement, FRACTIONAL_INDEX_FLOOR), predecessorElement,
end: getFractionalIndex(successorElement, FRACTIONAL_INDEX_CEILING), successorElement,
}); );
normalizedElements.push({ normalizedElements.push({
...element, ...element,