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Update poster.ts

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This commit is contained in:
syuilo
2026-03-03 16:48:21 +09:00
parent 66e0eeedfb
commit 8eebeab692
1 changed files with 50 additions and 26 deletions
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76
packages/frontend/src/utility/room/objects/poster.ts
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@@ -90,37 +90,61 @@ export const poster = defineObject({
let newDy = dy;
if (options.fit === 'cover') {
if (targetAspect > srcAspect) {
const fitHeight = targetWidth / srcAspect;
const crop = (fitHeight - targetHeight) / fitHeight / 2;
newAy = ay + crop * (by - ay);
newBy = by - crop * (by - ay);
newCy = cy + crop * (dy - cy);
newDy = dy - crop * (dy - cy);
const ratio = targetAspect / srcAspect;
let uRange: number;
let vRange: number;
if (ratio < 1) {
uRange = ratio; // < 1
vRange = 1;
} else {
const fitWidth = targetHeight * srcAspect;
const crop = (fitWidth - targetWidth) / fitWidth / 2;
newAx = ax + crop * (bx - ax);
newBx = bx - crop * (bx - ax);
newCx = cx + crop * (dx - cx);
newDx = dx - crop * (dx - cx);
uRange = 1;
vRange = 1 / ratio; // < 1
}
const uMin = (1 - uRange) / 2;
const uMax = uMin + uRange;
const vMin = (1 - vRange) / 2;
const vMax = vMin + vRange;
newAx = uMin;
newBx = uMax;
newCx = uMin;
newDx = uMax;
newAy = 1 - vMax;
newBy = 1 - vMax;
newCy = 1 - vMin;
newDy = 1 - vMin;
} else if (options.fit === 'contain') {
if (targetAspect > srcAspect) {
const fitWidth = targetHeight * srcAspect;
const crop = (fitWidth - targetWidth) / fitWidth / 2;
newAx = ax + crop * (bx - ax);
newBx = bx - crop * (bx - ax);
newCx = cx + crop * (dx - cx);
newDx = dx - crop * (dx - cx);
const ratio = targetAspect / srcAspect;
let uRange: number;
let vRange: number;
if (ratio > 1) {
uRange = ratio; // > 1
vRange = 1;
} else {
const fitHeight = targetWidth / srcAspect;
const crop = (fitHeight - targetHeight) / fitHeight / 2;
newAy = ay + crop * (by - ay);
newBy = by - crop * (by - ay);
newCy = cy + crop * (dy - cy);
newDy = dy - crop * (dy - cy);
uRange = 1;
vRange = 1 / ratio; // > 1
}
const uMin = (1 - uRange) / 2;
const uMax = uMin + uRange;
const vMin = (1 - vRange) / 2;
const vMax = vMin + vRange;
newAx = uMin;
newBx = uMax;
newCx = uMin;
newDx = uMax;
newAy = 1 - vMax;
newBy = 1 - vMax;
newCy = 1 - vMin;
newDy = 1 - vMin;
}
uvs[4] = newAx;