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Update poster.ts

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This commit is contained in:
syuilo
2026-03-03 16:33:57 +09:00
parent 98f74b0c7a
commit 3874f7abe9
1 changed files with 58 additions and 29 deletions
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87
packages/frontend/src/utility/room/objects/poster.ts
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@@ -55,18 +55,19 @@ export const poster = defineObject({
const uvs = pictureMesh.getVerticesData(BABYLON.VertexBuffer.UVKind);
/**
* a(x,y)---b(x,y)
* | |
* c(x,y)---d(x,y)
* 0 1
* 0 c(x,y)---a(x,y)
* | |
* 1 d(x,y)---b(x,y)
*/
const ax = uvs[6];
const ay = uvs[7];
const bx = uvs[2];
const by = uvs[3];
const cx = uvs[4];
const cy = uvs[5];
const dx = uvs[0];
const dy = uvs[1];
const ax = uvs[4];
const ay = uvs[5];
const bx = uvs[6];
const by = uvs[7];
const cx = uvs[0];
const cy = uvs[1];
const dx = uvs[2];
const dy = uvs[3];
const applyFit = () => {
const tex = pictureMaterial.albedoTexture;
@@ -79,29 +80,57 @@ export const poster = defineObject({
const targetHeight = options.height;
const targetAspect = targetWidth / targetHeight;
const newAx = ax;
const newAy = ay;
const newBx = bx;
const newBy = by;
const newCx = cx;
const newCy = cy;
const newDx = dx;
const newDy = dy;
let newAx = ax;
let newAy = ay;
let newBx = bx;
let newBy = by;
let newCx = cx;
let newCy = cy;
let newDx = dx;
let newDy = dy;
if (options.fit === 'cover') {
// TODO
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);
} 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);
}
} else if (options.fit === 'contain') {
// TODO
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);
} 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);
}
}
uvs[6] = newAx;
uvs[7] = newAy;
uvs[2] = newBx;
uvs[3] = newBy;
uvs[4] = newCx;
uvs[5] = newCy;
uvs[0] = newDx;
uvs[1] = newDy;
uvs[4] = newAx;
uvs[5] = newAy;
uvs[6] = newBx;
uvs[7] = newBy;
uvs[0] = newCx;
uvs[1] = newCy;
uvs[2] = newDx;
uvs[3] = newDy;
pictureMesh.updateVerticesData(BABYLON.VertexBuffer.UVKind, uvs);
};