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| author | Maze Winther <mazewinther@gmail.com> | 2026-03-27 00:55:15 +0100 |
|---|---|---|
| committer | Maze Winther <mazewinther@gmail.com> | 2026-03-29 15:56:48 +0200 |
| commit | 4d127a038bf768eded68aae3cfa5c1b12241bdac (patch) | |
| tree | 16bbb801caf6770546cff4fdb37b6408ec9ead98 /apps/web/src/lib/preview/element-bounds.ts | |
| parent | 82817cb50cb0487350573d6129130aec705f924b (diff) | |
| download | opencut-4d127a038bf768eded68aae3cfa5c1b12241bdac.tar.gz | |
chore: normalize line endings
Diffstat (limited to 'apps/web/src/lib/preview/element-bounds.ts')
| -rw-r--r-- | apps/web/src/lib/preview/element-bounds.ts | 654 |
1 files changed, 327 insertions, 327 deletions
diff --git a/apps/web/src/lib/preview/element-bounds.ts b/apps/web/src/lib/preview/element-bounds.ts index 5c416afc..c8420467 100644 --- a/apps/web/src/lib/preview/element-bounds.ts +++ b/apps/web/src/lib/preview/element-bounds.ts @@ -1,327 +1,327 @@ -import type { TimelineTrack, TimelineElement } from "@/lib/timeline"; -import type { MediaAsset } from "@/lib/media/types"; -import { isMainTrack } from "@/lib/timeline"; -import { STICKER_INTRINSIC_SIZE_FALLBACK } from "@/constants/sticker-constants"; -import { DEFAULT_GRAPHIC_SOURCE_SIZE } from "@/lib/graphics"; -import { measureTextElement } from "@/lib/text/measure-element"; -import { - getElementLocalTime, - resolveTransformAtTime, -} from "@/lib/animation"; - -export interface ElementBounds { - cx: number; - cy: number; - width: number; - height: number; - rotation: number; -} - -export interface ElementWithBounds { - trackId: string; - elementId: string; - element: TimelineElement; - bounds: ElementBounds; -} - -function getVisualElementBounds({ - canvasWidth, - canvasHeight, - sourceWidth, - sourceHeight, - transform, -}: { - canvasWidth: number; - canvasHeight: number; - sourceWidth: number; - sourceHeight: number; - transform: { - scaleX: number; - scaleY: number; - position: { x: number; y: number }; - rotate: number; - }; -}): ElementBounds { - const containScale = Math.min( - canvasWidth / sourceWidth, - canvasHeight / sourceHeight, - ); - const scaledWidth = sourceWidth * containScale * transform.scaleX; - const scaledHeight = sourceHeight * containScale * transform.scaleY; - const cx = canvasWidth / 2 + transform.position.x; - const cy = canvasHeight / 2 + transform.position.y; - - return { - cx, - cy, - width: scaledWidth, - height: scaledHeight, - rotation: transform.rotate, - }; -} - -function getTransformedRectBounds({ - canvasWidth, - canvasHeight, - rect, - transform, -}: { - canvasWidth: number; - canvasHeight: number; - rect: { left: number; top: number; width: number; height: number }; - transform: { - scaleX: number; - scaleY: number; - position: { x: number; y: number }; - rotate: number; - }; -}): ElementBounds { - const localCenterX = rect.left + rect.width / 2; - const localCenterY = rect.top + rect.height / 2; - const scaledCenterX = localCenterX * transform.scaleX; - const scaledCenterY = localCenterY * transform.scaleY; - const rotationRad = (transform.rotate * Math.PI) / 180; - const cos = Math.cos(rotationRad); - const sin = Math.sin(rotationRad); - return { - cx: - canvasWidth / 2 + - transform.position.x + - scaledCenterX * cos - - scaledCenterY * sin, - cy: - canvasHeight / 2 + - transform.position.y + - scaledCenterX * sin + - scaledCenterY * cos, - width: rect.width * transform.scaleX, - height: rect.height * transform.scaleY, - rotation: transform.rotate, - }; -} - -/** - * Bounds policy: bounds reflect base content geometry (text glyphs + background, - * sticker/image/video content area) and base transform. Post-effect spill (blur, - * glow) and mask-clipped regions are intentionally excluded — handles manipulate - * the canonical element geometry, not visual effect output. - */ -function getElementBounds({ - element, - canvasSize, - mediaAsset, - localTime, -}: { - element: TimelineElement; - canvasSize: { width: number; height: number }; - mediaAsset?: MediaAsset | null; - localTime: number; -}): ElementBounds | null { - if (element.type === "audio" || element.type === "effect") return null; - if ("hidden" in element && element.hidden) return null; - - const { width: canvasWidth, height: canvasHeight } = canvasSize; - - if (element.type === "video" || element.type === "image") { - const transform = resolveTransformAtTime({ - baseTransform: element.transform, - animations: element.animations, - localTime, - }); - const sourceWidth = mediaAsset?.width ?? canvasWidth; - const sourceHeight = mediaAsset?.height ?? canvasHeight; - return getVisualElementBounds({ - canvasWidth, - canvasHeight, - sourceWidth, - sourceHeight, - transform, - }); - } - - if (element.type === "sticker") { - const transform = resolveTransformAtTime({ - baseTransform: element.transform, - animations: element.animations, - localTime, - }); - return getVisualElementBounds({ - canvasWidth, - canvasHeight, - sourceWidth: element.intrinsicWidth ?? STICKER_INTRINSIC_SIZE_FALLBACK, - sourceHeight: element.intrinsicHeight ?? STICKER_INTRINSIC_SIZE_FALLBACK, - transform, - }); - } - - if (element.type === "graphic") { - const transform = resolveTransformAtTime({ - baseTransform: element.transform, - animations: element.animations, - localTime, - }); - return getVisualElementBounds({ - canvasWidth, - canvasHeight, - sourceWidth: DEFAULT_GRAPHIC_SOURCE_SIZE, - sourceHeight: DEFAULT_GRAPHIC_SOURCE_SIZE, - transform, - }); - } - - if (element.type === "text") { - const transform = resolveTransformAtTime({ - baseTransform: element.transform, - animations: element.animations, - localTime, - }); - - const canvas = document.createElement("canvas"); - const ctx = canvas.getContext("2d"); - if (!ctx) return null; - - const measured = measureTextElement({ - element, - canvasHeight, - localTime, - ctx, - }); - - return getTransformedRectBounds({ - canvasWidth, - canvasHeight, - rect: measured.visualRect, - transform, - }); - } - - return null; -} - -export const ROTATION_HANDLE_OFFSET = 24; - -export type Corner = "top-left" | "top-right" | "bottom-left" | "bottom-right"; -export type Edge = "right" | "left" | "bottom"; - -export function getCornerPosition({ - bounds, - corner, -}: { - bounds: ElementBounds; - corner: Corner; -}): { x: number; y: number } { - const halfW = bounds.width / 2; - const halfH = bounds.height / 2; - const angleRad = (bounds.rotation * Math.PI) / 180; - const cos = Math.cos(angleRad); - const sin = Math.sin(angleRad); - const localX = - corner === "top-left" || corner === "bottom-left" ? -halfW : halfW; - const localY = - corner === "top-left" || corner === "top-right" ? -halfH : halfH; - return { - x: bounds.cx + (localX * cos - localY * sin), - y: bounds.cy + (localX * sin + localY * cos), - }; -} - -export function getEdgeHandlePosition({ - bounds, - edge, -}: { - bounds: ElementBounds; - edge: Edge; -}): { x: number; y: number } { - const halfWidth = bounds.width / 2; - const halfHeight = bounds.height / 2; - const angleRad = (bounds.rotation * Math.PI) / 180; - const cos = Math.cos(angleRad); - const sin = Math.sin(angleRad); - const localX = edge === "right" ? halfWidth : edge === "left" ? -halfWidth : 0; - const localY = edge === "bottom" ? halfHeight : 0; - return { - x: bounds.cx + (localX * cos - localY * sin), - y: bounds.cy + (localX * sin + localY * cos), - }; -} - -export function getRotationHandlePosition({ - bounds, -}: { - bounds: ElementBounds; -}): { x: number; y: number } { - const angleRad = (bounds.rotation * Math.PI) / 180; - const cos = Math.cos(angleRad); - const sin = Math.sin(angleRad); - const localY = -bounds.height / 2 - ROTATION_HANDLE_OFFSET; - return { - x: bounds.cx - localY * sin, - y: bounds.cy + localY * cos, - }; -} - -export function getVisibleElementsWithBounds({ - tracks, - currentTime, - canvasSize, - mediaAssets, -}: { - tracks: TimelineTrack[]; - currentTime: number; - canvasSize: { width: number; height: number }; - mediaAssets: MediaAsset[]; -}): ElementWithBounds[] { - const mediaMap = new Map(mediaAssets.map((m) => [m.id, m])); - const visibleTracks = tracks.filter( - (track) => !("hidden" in track && track.hidden), - ); - const orderedTracks = [ - ...visibleTracks.filter((track) => !isMainTrack(track)), - ...visibleTracks.filter((track) => isMainTrack(track)), - ].reverse(); - - const result: ElementWithBounds[] = []; - - for (const track of orderedTracks) { - const elements = track.elements - .filter((element) => !("hidden" in element && element.hidden)) - .filter( - (element) => - currentTime >= element.startTime && - currentTime < element.startTime + element.duration, - ) - .slice() - .sort((a, b) => { - if (a.startTime !== b.startTime) return a.startTime - b.startTime; - return a.id.localeCompare(b.id); - }); - - for (const element of elements) { - const localTime = getElementLocalTime({ - timelineTime: currentTime, - elementStartTime: element.startTime, - elementDuration: element.duration, - }); - const mediaAsset = - element.type === "video" || element.type === "image" - ? mediaMap.get(element.mediaId) - : undefined; - const bounds = getElementBounds({ - element, - canvasSize, - mediaAsset, - localTime, - }); - if (bounds) { - result.push({ - trackId: track.id, - elementId: element.id, - element, - bounds, - }); - } - } - } - - return result; -} +import type { TimelineTrack, TimelineElement } from "@/lib/timeline";
+import type { MediaAsset } from "@/lib/media/types";
+import { isMainTrack } from "@/lib/timeline";
+import { STICKER_INTRINSIC_SIZE_FALLBACK } from "@/constants/sticker-constants";
+import { DEFAULT_GRAPHIC_SOURCE_SIZE } from "@/lib/graphics";
+import { measureTextElement } from "@/lib/text/measure-element";
+import {
+ getElementLocalTime,
+ resolveTransformAtTime,
+} from "@/lib/animation";
+
+export interface ElementBounds {
+ cx: number;
+ cy: number;
+ width: number;
+ height: number;
+ rotation: number;
+}
+
+export interface ElementWithBounds {
+ trackId: string;
+ elementId: string;
+ element: TimelineElement;
+ bounds: ElementBounds;
+}
+
+function getVisualElementBounds({
+ canvasWidth,
+ canvasHeight,
+ sourceWidth,
+ sourceHeight,
+ transform,
+}: {
+ canvasWidth: number;
+ canvasHeight: number;
+ sourceWidth: number;
+ sourceHeight: number;
+ transform: {
+ scaleX: number;
+ scaleY: number;
+ position: { x: number; y: number };
+ rotate: number;
+ };
+}): ElementBounds {
+ const containScale = Math.min(
+ canvasWidth / sourceWidth,
+ canvasHeight / sourceHeight,
+ );
+ const scaledWidth = sourceWidth * containScale * transform.scaleX;
+ const scaledHeight = sourceHeight * containScale * transform.scaleY;
+ const cx = canvasWidth / 2 + transform.position.x;
+ const cy = canvasHeight / 2 + transform.position.y;
+
+ return {
+ cx,
+ cy,
+ width: scaledWidth,
+ height: scaledHeight,
+ rotation: transform.rotate,
+ };
+}
+
+function getTransformedRectBounds({
+ canvasWidth,
+ canvasHeight,
+ rect,
+ transform,
+}: {
+ canvasWidth: number;
+ canvasHeight: number;
+ rect: { left: number; top: number; width: number; height: number };
+ transform: {
+ scaleX: number;
+ scaleY: number;
+ position: { x: number; y: number };
+ rotate: number;
+ };
+}): ElementBounds {
+ const localCenterX = rect.left + rect.width / 2;
+ const localCenterY = rect.top + rect.height / 2;
+ const scaledCenterX = localCenterX * transform.scaleX;
+ const scaledCenterY = localCenterY * transform.scaleY;
+ const rotationRad = (transform.rotate * Math.PI) / 180;
+ const cos = Math.cos(rotationRad);
+ const sin = Math.sin(rotationRad);
+ return {
+ cx:
+ canvasWidth / 2 +
+ transform.position.x +
+ scaledCenterX * cos -
+ scaledCenterY * sin,
+ cy:
+ canvasHeight / 2 +
+ transform.position.y +
+ scaledCenterX * sin +
+ scaledCenterY * cos,
+ width: rect.width * transform.scaleX,
+ height: rect.height * transform.scaleY,
+ rotation: transform.rotate,
+ };
+}
+
+/**
+ * Bounds policy: bounds reflect base content geometry (text glyphs + background,
+ * sticker/image/video content area) and base transform. Post-effect spill (blur,
+ * glow) and mask-clipped regions are intentionally excluded — handles manipulate
+ * the canonical element geometry, not visual effect output.
+ */
+function getElementBounds({
+ element,
+ canvasSize,
+ mediaAsset,
+ localTime,
+}: {
+ element: TimelineElement;
+ canvasSize: { width: number; height: number };
+ mediaAsset?: MediaAsset | null;
+ localTime: number;
+}): ElementBounds | null {
+ if (element.type === "audio" || element.type === "effect") return null;
+ if ("hidden" in element && element.hidden) return null;
+
+ const { width: canvasWidth, height: canvasHeight } = canvasSize;
+
+ if (element.type === "video" || element.type === "image") {
+ const transform = resolveTransformAtTime({
+ baseTransform: element.transform,
+ animations: element.animations,
+ localTime,
+ });
+ const sourceWidth = mediaAsset?.width ?? canvasWidth;
+ const sourceHeight = mediaAsset?.height ?? canvasHeight;
+ return getVisualElementBounds({
+ canvasWidth,
+ canvasHeight,
+ sourceWidth,
+ sourceHeight,
+ transform,
+ });
+ }
+
+ if (element.type === "sticker") {
+ const transform = resolveTransformAtTime({
+ baseTransform: element.transform,
+ animations: element.animations,
+ localTime,
+ });
+ return getVisualElementBounds({
+ canvasWidth,
+ canvasHeight,
+ sourceWidth: element.intrinsicWidth ?? STICKER_INTRINSIC_SIZE_FALLBACK,
+ sourceHeight: element.intrinsicHeight ?? STICKER_INTRINSIC_SIZE_FALLBACK,
+ transform,
+ });
+ }
+
+ if (element.type === "graphic") {
+ const transform = resolveTransformAtTime({
+ baseTransform: element.transform,
+ animations: element.animations,
+ localTime,
+ });
+ return getVisualElementBounds({
+ canvasWidth,
+ canvasHeight,
+ sourceWidth: DEFAULT_GRAPHIC_SOURCE_SIZE,
+ sourceHeight: DEFAULT_GRAPHIC_SOURCE_SIZE,
+ transform,
+ });
+ }
+
+ if (element.type === "text") {
+ const transform = resolveTransformAtTime({
+ baseTransform: element.transform,
+ animations: element.animations,
+ localTime,
+ });
+
+ const canvas = document.createElement("canvas");
+ const ctx = canvas.getContext("2d");
+ if (!ctx) return null;
+
+ const measured = measureTextElement({
+ element,
+ canvasHeight,
+ localTime,
+ ctx,
+ });
+
+ return getTransformedRectBounds({
+ canvasWidth,
+ canvasHeight,
+ rect: measured.visualRect,
+ transform,
+ });
+ }
+
+ return null;
+}
+
+export const ROTATION_HANDLE_OFFSET = 24;
+
+export type Corner = "top-left" | "top-right" | "bottom-left" | "bottom-right";
+export type Edge = "right" | "left" | "bottom";
+
+export function getCornerPosition({
+ bounds,
+ corner,
+}: {
+ bounds: ElementBounds;
+ corner: Corner;
+}): { x: number; y: number } {
+ const halfW = bounds.width / 2;
+ const halfH = bounds.height / 2;
+ const angleRad = (bounds.rotation * Math.PI) / 180;
+ const cos = Math.cos(angleRad);
+ const sin = Math.sin(angleRad);
+ const localX =
+ corner === "top-left" || corner === "bottom-left" ? -halfW : halfW;
+ const localY =
+ corner === "top-left" || corner === "top-right" ? -halfH : halfH;
+ return {
+ x: bounds.cx + (localX * cos - localY * sin),
+ y: bounds.cy + (localX * sin + localY * cos),
+ };
+}
+
+export function getEdgeHandlePosition({
+ bounds,
+ edge,
+}: {
+ bounds: ElementBounds;
+ edge: Edge;
+}): { x: number; y: number } {
+ const halfWidth = bounds.width / 2;
+ const halfHeight = bounds.height / 2;
+ const angleRad = (bounds.rotation * Math.PI) / 180;
+ const cos = Math.cos(angleRad);
+ const sin = Math.sin(angleRad);
+ const localX = edge === "right" ? halfWidth : edge === "left" ? -halfWidth : 0;
+ const localY = edge === "bottom" ? halfHeight : 0;
+ return {
+ x: bounds.cx + (localX * cos - localY * sin),
+ y: bounds.cy + (localX * sin + localY * cos),
+ };
+}
+
+export function getRotationHandlePosition({
+ bounds,
+}: {
+ bounds: ElementBounds;
+}): { x: number; y: number } {
+ const angleRad = (bounds.rotation * Math.PI) / 180;
+ const cos = Math.cos(angleRad);
+ const sin = Math.sin(angleRad);
+ const localY = -bounds.height / 2 - ROTATION_HANDLE_OFFSET;
+ return {
+ x: bounds.cx - localY * sin,
+ y: bounds.cy + localY * cos,
+ };
+}
+
+export function getVisibleElementsWithBounds({
+ tracks,
+ currentTime,
+ canvasSize,
+ mediaAssets,
+}: {
+ tracks: TimelineTrack[];
+ currentTime: number;
+ canvasSize: { width: number; height: number };
+ mediaAssets: MediaAsset[];
+}): ElementWithBounds[] {
+ const mediaMap = new Map(mediaAssets.map((m) => [m.id, m]));
+ const visibleTracks = tracks.filter(
+ (track) => !("hidden" in track && track.hidden),
+ );
+ const orderedTracks = [
+ ...visibleTracks.filter((track) => !isMainTrack(track)),
+ ...visibleTracks.filter((track) => isMainTrack(track)),
+ ].reverse();
+
+ const result: ElementWithBounds[] = [];
+
+ for (const track of orderedTracks) {
+ const elements = track.elements
+ .filter((element) => !("hidden" in element && element.hidden))
+ .filter(
+ (element) =>
+ currentTime >= element.startTime &&
+ currentTime < element.startTime + element.duration,
+ )
+ .slice()
+ .sort((a, b) => {
+ if (a.startTime !== b.startTime) return a.startTime - b.startTime;
+ return a.id.localeCompare(b.id);
+ });
+
+ for (const element of elements) {
+ const localTime = getElementLocalTime({
+ timelineTime: currentTime,
+ elementStartTime: element.startTime,
+ elementDuration: element.duration,
+ });
+ const mediaAsset =
+ element.type === "video" || element.type === "image"
+ ? mediaMap.get(element.mediaId)
+ : undefined;
+ const bounds = getElementBounds({
+ element,
+ canvasSize,
+ mediaAsset,
+ localTime,
+ });
+ if (bounds) {
+ result.push({
+ trackId: track.id,
+ elementId: element.id,
+ element,
+ bounds,
+ });
+ }
+ }
+ }
+
+ return result;
+}
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