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fix: clarify comments for inclusive range calculation and offset adjustments in OSD positioning

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This commit is contained in:
Syahmi Zul 2025-06-19 20:09:45 +08:00
parent b2e44817cd
commit 8c9a027ba4
1 changed files with 6 additions and 2 deletions
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8
src/js/tabs/osd.js
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@ -3088,12 +3088,16 @@ OSD.presetPosition.applyPosition = function (fieldChanged, positionKey) {
if (fieldChanged.preview.constructor == Array) {
const limits = OSD.searchLimitsElement(fieldChanged.preview);
// Note: Using +1 for inclusive range calculation, which is mathematically
// correct for counting occupied positions. An element spanning coordinates
// -2 to 2 occupies 5 positions: [-2, -1, 0, 1, 2]
elementWidth = limits.maxX - limits.minX + 1;
elementHeight = limits.maxY - limits.minY + 1;
// Offset adjustments are needed because the positioning system expects
// these values to account for the difference between logical and visual positioning.
adjustOffsetX = limits.minX; // keep raw limits – the centering maths upstream expects this
// Use raw limits for offsets since they represent coordinate positions, not dimensions
adjustOffsetX = limits.minX;
adjustOffsetY = limits.minY;
} else if (fieldChanged.preview.constructor === String) {
elementHeight = 1;
@ -3147,7 +3151,7 @@ OSD.presetPosition.applyPosition = function (fieldChanged, positionKey) {
if (canPlace) {
finalPosition = testY * OSD.data.displaySize.x + testX;
// If this doesn't exist then advanced elements won't be where we expect them to be.
// Needed for advanced elements or else they won't be where we expect them to be.
finalPosition -= adjustOffsetX;
finalPosition -= adjustOffsetY * OSD.data.displaySize.x;