1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
|
import type { TimelineTrack } from "@/types/timeline";
import type { MediaAsset } from "@/types/assets";
import { RootNode } from "./nodes/root-node";
import { VideoNode } from "./nodes/video-node";
import { ImageNode } from "./nodes/image-node";
import { TextNode } from "./nodes/text-node";
import { StickerNode } from "./nodes/sticker-node";
import { ColorNode } from "./nodes/color-node";
import { BlurBackgroundNode } from "./nodes/blur-background-node";
import type { TBackground, TCanvasSize } from "@/types/project";
import { DEFAULT_BLUR_INTENSITY } from "@/constants/project-constants";
import { isMainTrack } from "@/lib/timeline";
const PREVIEW_MAX_IMAGE_SIZE = 2048;
export type BuildSceneParams = {
canvasSize: TCanvasSize;
tracks: TimelineTrack[];
mediaAssets: MediaAsset[];
duration: number;
background: TBackground;
isPreview?: boolean;
};
export function buildScene(params: BuildSceneParams) {
const { tracks, mediaAssets, duration, canvasSize, background } = params;
const rootNode = new RootNode({ duration });
const mediaMap = new Map(mediaAssets.map((m) => [m.id, m]));
const visibleTracks = tracks.filter(
(track) => !("hidden" in track && track.hidden),
);
const orderedTracksTopToBottom = [
...visibleTracks.filter((track) => !isMainTrack(track)),
...visibleTracks.filter((track) => isMainTrack(track)),
];
const orderedTracksBottomToTop = orderedTracksTopToBottom.slice().reverse();
const contentNodes = [];
for (const track of orderedTracksBottomToTop) {
const elements = track.elements
.filter((element) => !("hidden" in element && element.hidden))
.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) {
if (element.type === "video" || element.type === "image") {
const mediaAsset = mediaMap.get(element.mediaId);
if (!mediaAsset?.file || !mediaAsset?.url) {
continue;
}
if (mediaAsset.type === "video") {
contentNodes.push(
new VideoNode({
mediaId: mediaAsset.id,
url: mediaAsset.url,
file: mediaAsset.file,
duration: element.duration,
timeOffset: element.startTime,
trimStart: element.trimStart,
trimEnd: element.trimEnd,
transform: element.transform,
opacity: element.opacity,
blendMode: element.blendMode,
}),
);
}
if (mediaAsset.type === "image") {
contentNodes.push(
new ImageNode({
url: mediaAsset.url,
duration: element.duration,
timeOffset: element.startTime,
trimStart: element.trimStart,
trimEnd: element.trimEnd,
transform: element.transform,
opacity: element.opacity,
blendMode: element.blendMode,
...(params.isPreview && {
maxSourceSize: PREVIEW_MAX_IMAGE_SIZE,
}),
}),
);
}
}
if (element.type === "text") {
contentNodes.push(
new TextNode({
...element,
canvasCenter: { x: canvasSize.width / 2, y: canvasSize.height / 2 },
canvasHeight: canvasSize.height,
textBaseline: "middle",
}),
);
}
if (element.type === "sticker") {
contentNodes.push(
new StickerNode({
stickerId: element.stickerId,
duration: element.duration,
timeOffset: element.startTime,
trimStart: element.trimStart,
trimEnd: element.trimEnd,
transform: element.transform,
opacity: element.opacity,
blendMode: element.blendMode,
}),
);
}
}
}
if (background.type === "blur") {
rootNode.add(
new BlurBackgroundNode({
blurIntensity: background.blurIntensity ?? DEFAULT_BLUR_INTENSITY,
contentNodes,
}),
);
for (const node of contentNodes) {
rootNode.add(node);
}
} else {
if (background.type === "color" && background.color !== "transparent") {
rootNode.add(new ColorNode({ color: background.color }));
}
for (const node of contentNodes) {
rootNode.add(node);
}
}
return rootNode;
}
|
