WebGL Minimap (#3510)
This PR replaces our current minimap implementation with one that uses WebGL ### Change Type <!-- ❗ Please select a 'Scope' label ❗️ --> - [x] `sdk` — Changes the tldraw SDK - [ ] `dotcom` — Changes the tldraw.com web app - [ ] `docs` — Changes to the documentation, examples, or templates. - [ ] `vs code` — Changes to the vscode plugin - [ ] `internal` — Does not affect user-facing stuff <!-- ❗ Please select a 'Type' label ❗️ --> - [ ] `bugfix` — Bug fix - [ ] `feature` — New feature - [x] `improvement` — Improving existing features - [ ] `chore` — Updating dependencies, other boring stuff - [ ] `galaxy brain` — Architectural changes - [ ] `tests` — Changes to any test code - [ ] `tools` — Changes to infrastructure, CI, internal scripts, debugging tools, etc. - [ ] `dunno` — I don't know ### Test Plan 1. Add a step-by-step description of how to test your PR here. 2. - [ ] Unit Tests - [ ] End to end tests ### Release Notes - Add a brief release note for your PR here. --------- Co-authored-by: Steve Ruiz <steveruizok@gmail.com>
This commit is contained in:
David Sheldrick
GitHub
parent
f6a2e352de
commit
b5dfd81540
11 changed files with 743 additions and 420 deletions
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@ -682,6 +682,8 @@ export class Editor extends EventEmitter<TLEventMap> {
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getCameraState(): "idle" | "moving";
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getCanRedo(): boolean;
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getCanUndo(): boolean;
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getCollaborators(): TLInstancePresence[];
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getCollaboratorsOnCurrentPage(): TLInstancePresence[];
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getContainer: () => HTMLElement;
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getContentFromCurrentPage(shapes: TLShape[] | TLShapeId[]): TLContent | undefined;
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// @internal
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@ -693,6 +695,8 @@ export class Editor extends EventEmitter<TLEventMap> {
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getCurrentPageId(): TLPageId;
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getCurrentPageRenderingShapesSorted(): TLShape[];
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getCurrentPageShapeIds(): Set<TLShapeId>;
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// @internal (undocumented)
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getCurrentPageShapeIdsSorted(): TLShapeId[];
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getCurrentPageShapes(): TLShape[];
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getCurrentPageShapesSorted(): TLShape[];
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getCurrentPageState(): TLInstancePageState;
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@ -10059,6 +10059,86 @@
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"isAbstract": false,
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"name": "getCanUndo"
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},
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{
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"kind": "Method",
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"canonicalReference": "@tldraw/editor!Editor#getCollaborators:member(1)",
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"docComment": "/**\n * Returns a list of presence records for all peer collaborators. This will return the latest presence record for each connected user.\n *\n * @public\n */\n",
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"excerptTokens": [
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{
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"kind": "Content",
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"text": "getCollaborators(): "
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},
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{
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"kind": "Content",
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"text": "import(\"@tldraw/tlschema\")."
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},
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{
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"kind": "Reference",
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"text": "TLInstancePresence",
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"canonicalReference": "@tldraw/tlschema!TLInstancePresence:interface"
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},
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{
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"kind": "Content",
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"text": "[]"
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},
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{
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"kind": "Content",
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"text": ";"
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}
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],
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"isStatic": false,
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"returnTypeTokenRange": {
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"startIndex": 1,
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"endIndex": 4
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},
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"releaseTag": "Public",
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"isProtected": false,
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"overloadIndex": 1,
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"parameters": [],
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"isOptional": false,
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"isAbstract": false,
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"name": "getCollaborators"
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},
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{
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"kind": "Method",
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"canonicalReference": "@tldraw/editor!Editor#getCollaboratorsOnCurrentPage:member(1)",
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"docComment": "/**\n * Returns a list of presence records for all peer collaborators on the current page. This will return the latest presence record for each connected user.\n *\n * @public\n */\n",
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"excerptTokens": [
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{
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"kind": "Content",
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"text": "getCollaboratorsOnCurrentPage(): "
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},
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{
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"kind": "Content",
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"text": "import(\"@tldraw/tlschema\")."
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},
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{
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"kind": "Reference",
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"text": "TLInstancePresence",
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"canonicalReference": "@tldraw/tlschema!TLInstancePresence:interface"
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},
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{
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"kind": "Content",
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"text": "[]"
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},
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{
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"kind": "Content",
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"text": ";"
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}
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],
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"isStatic": false,
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"returnTypeTokenRange": {
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"startIndex": 1,
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"endIndex": 4
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},
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"releaseTag": "Public",
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"isProtected": false,
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"overloadIndex": 1,
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"parameters": [],
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"isOptional": false,
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"isAbstract": false,
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"name": "getCollaboratorsOnCurrentPage"
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},
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{
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"kind": "Property",
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"canonicalReference": "@tldraw/editor!Editor#getContainer:member",
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@ -2619,15 +2619,7 @@ export class Editor extends EventEmitter<TLEventMap> {
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* @public
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*/
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animateToUser(userId: string): this {
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const presences = this.store.query.records('instance_presence', () => ({
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userId: { eq: userId },
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}))
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const presence = [...presences.get()]
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.sort((a, b) => {
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return a.lastActivityTimestamp - b.lastActivityTimestamp
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})
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.pop()
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const presence = this.getCollaborators().find((c) => c.userId === userId)
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if (!presence) return this
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@ -2883,6 +2875,45 @@ export class Editor extends EventEmitter<TLEventMap> {
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z: point.z ?? 0.5,
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}
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}
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// Collaborators
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@computed
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private _getCollaboratorsQuery() {
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return this.store.query.records('instance_presence', () => ({
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userId: { neq: this.user.getId() },
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}))
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}
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/**
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* Returns a list of presence records for all peer collaborators.
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* This will return the latest presence record for each connected user.
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*
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* @public
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*/
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@computed
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getCollaborators() {
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const allPresenceRecords = this._getCollaboratorsQuery().get()
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if (!allPresenceRecords.length) return EMPTY_ARRAY
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const userIds = [...new Set(allPresenceRecords.map((c) => c.userId))].sort()
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return userIds.map((id) => {
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const latestPresence = allPresenceRecords
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.filter((c) => c.userId === id)
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.sort((a, b) => b.lastActivityTimestamp - a.lastActivityTimestamp)[0]
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return latestPresence
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})
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}
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/**
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* Returns a list of presence records for all peer collaborators on the current page.
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* This will return the latest presence record for each connected user.
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*
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* @public
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*/
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@computed
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getCollaboratorsOnCurrentPage() {
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const currentPageId = this.getCurrentPageId()
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return this.getCollaborators().filter((c) => c.currentPageId === currentPageId)
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}
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// Following
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@ -2894,9 +2925,9 @@ export class Editor extends EventEmitter<TLEventMap> {
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* @public
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*/
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startFollowingUser(userId: string): this {
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const leaderPresences = this.store.query.records('instance_presence', () => ({
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userId: { eq: userId },
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}))
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const leaderPresences = this._getCollaboratorsQuery()
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.get()
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.filter((p) => p.userId === userId)
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const thisUserId = this.user.getId()
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@ -2905,7 +2936,7 @@ export class Editor extends EventEmitter<TLEventMap> {
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}
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// If the leader is following us, then we can't follow them
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if (leaderPresences.get().some((p) => p.followingUserId === thisUserId)) {
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if (leaderPresences.some((p) => p.followingUserId === thisUserId)) {
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return this
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}
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@ -2924,7 +2955,7 @@ export class Editor extends EventEmitter<TLEventMap> {
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const moveTowardsUser = () => {
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// Stop following if we can't find the user
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const leaderPresence = [...leaderPresences.get()]
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const leaderPresence = [...leaderPresences]
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.sort((a, b) => {
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return a.lastActivityTimestamp - b.lastActivityTimestamp
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})
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@ -3281,6 +3312,14 @@ export class Editor extends EventEmitter<TLEventMap> {
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return this._currentPageShapeIds.get()
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}
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/**
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* @internal
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*/
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@computed
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getCurrentPageShapeIdsSorted() {
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return Array.from(this.getCurrentPageShapeIds()).sort()
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}
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/**
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* Get the ids of shapes on a page.
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*
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@ -3893,7 +3932,7 @@ export class Editor extends EventEmitter<TLEventMap> {
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* @public
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*/
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getShapePageTransform(shape: TLShape | TLShapeId): Mat {
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const id = typeof shape === 'string' ? shape : this.getShape(shape)!.id
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const id = typeof shape === 'string' ? shape : shape.id
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return this._getShapePageTransformCache().get(id) ?? Mat.Identity()
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}
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@ -4227,7 +4266,7 @@ export class Editor extends EventEmitter<TLEventMap> {
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@computed getCurrentPageBounds(): Box | undefined {
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let commonBounds: Box | undefined
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this.getCurrentPageShapeIds().forEach((shapeId) => {
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this.getCurrentPageShapeIdsSorted().forEach((shapeId) => {
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const bounds = this.getShapeMaskedPageBounds(shapeId)
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if (!bounds) return
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if (!commonBounds) {
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@ -8159,7 +8198,11 @@ export class Editor extends EventEmitter<TLEventMap> {
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// it will be 0,0 when its actual screen position is equal
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// to screenBounds.point. This is confusing!
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currentScreenPoint.set(sx, sy)
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currentPagePoint.set(sx / cz - cx, sy / cz - cy, sz)
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const nx = sx / cz - cx
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const ny = sy / cz - cy
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if (isFinite(nx) && isFinite(ny)) {
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currentPagePoint.set(nx, ny, sz)
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}
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this.inputs.isPen = info.type === 'pointer' && info.isPen
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@ -1,5 +1,4 @@
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import { useComputed, useValue } from '@tldraw/state'
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import { useMemo } from 'react'
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import { uniq } from '../utils/uniq'
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import { useEditor } from './useEditor'
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@ -10,17 +9,12 @@ import { useEditor } from './useEditor'
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*/
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export function usePeerIds() {
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const editor = useEditor()
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const $presences = useMemo(() => {
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return editor.store.query.records('instance_presence', () => ({
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userId: { neq: editor.user.getId() },
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}))
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}, [editor])
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const $userIds = useComputed(
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'userIds',
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() => uniq($presences.get().map((p) => p.userId)).sort(),
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() => uniq(editor.getCollaborators().map((p) => p.userId)).sort(),
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{ isEqual: (a, b) => a.join(',') === b.join?.(',') },
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[$presences]
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[editor]
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)
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return useValue($userIds)
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@ -1,6 +1,5 @@
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import { useValue } from '@tldraw/state'
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import { TLInstancePresence } from '@tldraw/tlschema'
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import { useMemo } from 'react'
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import { useEditor } from './useEditor'
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// TODO: maybe move this to a computed property on the App class?
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@ -11,21 +10,12 @@ import { useEditor } from './useEditor'
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export function usePresence(userId: string): TLInstancePresence | null {
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const editor = useEditor()
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const $presences = useMemo(() => {
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return editor.store.query.records('instance_presence', () => ({
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userId: { eq: userId },
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}))
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}, [editor, userId])
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const latestPresence = useValue(
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`latestPresence:${userId}`,
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() => {
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return $presences
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.get()
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.slice()
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.sort((a, b) => b.lastActivityTimestamp - a.lastActivityTimestamp)[0]
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return editor.getCollaborators().find((c) => c.userId === userId)
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},
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[]
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[editor]
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)
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return latestPresence ?? null
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@ -39,12 +39,13 @@ export class Mat {
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equals(m: Mat | MatModel) {
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return (
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this.a === m.a &&
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this === m ||
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(this.a === m.a &&
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this.b === m.b &&
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this.c === m.c &&
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this.d === m.d &&
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this.e === m.e &&
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this.f === m.f
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this.f === m.f)
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)
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}
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@ -1,18 +1,13 @@
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import {
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ANIMATION_MEDIUM_MS,
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Box,
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TLPointerEventInfo,
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TLShapeId,
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Vec,
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getPointerInfo,
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intersectPolygonPolygon,
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normalizeWheel,
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releasePointerCapture,
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setPointerCapture,
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useComputed,
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useEditor,
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useIsDarkMode,
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useQuickReactor,
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} from '@tldraw/editor'
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import * as React from 'react'
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import { MinimapManager } from './MinimapManager'
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@ -24,67 +19,78 @@ export function DefaultMinimap() {
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const rCanvas = React.useRef<HTMLCanvasElement>(null!)
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const rPointing = React.useRef(false)
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const isDarkMode = useIsDarkMode()
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const devicePixelRatio = useComputed('dpr', () => editor.getInstanceState().devicePixelRatio, [
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editor,
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])
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const presences = React.useMemo(() => editor.store.query.records('instance_presence'), [editor])
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const minimap = React.useMemo(() => new MinimapManager(editor), [editor])
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const minimapRef = React.useRef<MinimapManager>()
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React.useEffect(() => {
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// Must check after render
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const raf = requestAnimationFrame(() => {
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minimap.updateColors()
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minimap.render()
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})
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return () => {
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cancelAnimationFrame(raf)
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}
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}, [editor, minimap, isDarkMode])
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const minimap = new MinimapManager(editor, rCanvas.current)
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minimapRef.current = minimap
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return minimapRef.current.close
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}, [editor])
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const onDoubleClick = React.useCallback(
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(e: React.MouseEvent<HTMLCanvasElement>) => {
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if (!editor.getCurrentPageShapeIds().size) return
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if (!minimapRef.current) return
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const point = minimap.minimapScreenPointToPagePoint(e.clientX, e.clientY, false, false)
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const point = minimapRef.current.minimapScreenPointToPagePoint(
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e.clientX,
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e.clientY,
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false,
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false
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)
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const clampedPoint = minimap.minimapScreenPointToPagePoint(e.clientX, e.clientY, false, true)
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const clampedPoint = minimapRef.current.minimapScreenPointToPagePoint(
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e.clientX,
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e.clientY,
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false,
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true
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)
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minimap.originPagePoint.setTo(clampedPoint)
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minimap.originPageCenter.setTo(editor.getViewportPageBounds().center)
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minimapRef.current.originPagePoint.setTo(clampedPoint)
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minimapRef.current.originPageCenter.setTo(editor.getViewportPageBounds().center)
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editor.centerOnPoint(point, { duration: ANIMATION_MEDIUM_MS })
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},
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[editor, minimap]
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[editor]
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)
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const onPointerDown = React.useCallback(
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(e: React.PointerEvent<HTMLCanvasElement>) => {
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if (!minimapRef.current) return
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const elm = e.currentTarget
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setPointerCapture(elm, e)
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if (!editor.getCurrentPageShapeIds().size) return
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rPointing.current = true
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minimap.isInViewport = false
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minimapRef.current.isInViewport = false
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const point = minimap.minimapScreenPointToPagePoint(e.clientX, e.clientY, false, false)
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const point = minimapRef.current.minimapScreenPointToPagePoint(
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e.clientX,
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e.clientY,
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false,
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false
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)
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const clampedPoint = minimap.minimapScreenPointToPagePoint(e.clientX, e.clientY, false, true)
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const clampedPoint = minimapRef.current.minimapScreenPointToPagePoint(
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e.clientX,
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e.clientY,
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false,
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true
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)
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const _vpPageBounds = editor.getViewportPageBounds()
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minimap.isInViewport = _vpPageBounds.containsPoint(clampedPoint)
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minimapRef.current.isInViewport = _vpPageBounds.containsPoint(clampedPoint)
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if (minimap.isInViewport) {
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minimap.originPagePoint.setTo(clampedPoint)
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minimap.originPageCenter.setTo(_vpPageBounds.center)
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if (minimapRef.current.isInViewport) {
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minimapRef.current.originPagePoint.setTo(clampedPoint)
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minimapRef.current.originPageCenter.setTo(_vpPageBounds.center)
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} else {
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const delta = Vec.Sub(_vpPageBounds.center, _vpPageBounds.point)
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const pagePoint = Vec.Add(point, delta)
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minimap.originPagePoint.setTo(pagePoint)
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minimap.originPageCenter.setTo(point)
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minimapRef.current.originPagePoint.setTo(pagePoint)
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minimapRef.current.originPageCenter.setTo(point)
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editor.centerOnPoint(point, { duration: ANIMATION_MEDIUM_MS })
|
||||
}
|
||||
|
||||
|
|
@ -98,16 +104,24 @@ export function DefaultMinimap() {
|
|||
|
||||
document.body.addEventListener('pointerup', release)
|
||||
},
|
||||
[editor, minimap]
|
||||
[editor]
|
||||
)
|
||||
|
||||
const onPointerMove = React.useCallback(
|
||||
(e: React.PointerEvent<HTMLCanvasElement>) => {
|
||||
const point = minimap.minimapScreenPointToPagePoint(e.clientX, e.clientY, e.shiftKey, true)
|
||||
if (!minimapRef.current) return
|
||||
const point = minimapRef.current.minimapScreenPointToPagePoint(
|
||||
e.clientX,
|
||||
e.clientY,
|
||||
e.shiftKey,
|
||||
true
|
||||
)
|
||||
|
||||
if (rPointing.current) {
|
||||
if (minimap.isInViewport) {
|
||||
const delta = minimap.originPagePoint.clone().sub(minimap.originPageCenter)
|
||||
if (minimapRef.current.isInViewport) {
|
||||
const delta = minimapRef.current.originPagePoint
|
||||
.clone()
|
||||
.sub(minimapRef.current.originPageCenter)
|
||||
editor.centerOnPoint(Vec.Sub(point, delta))
|
||||
return
|
||||
}
|
||||
|
|
@ -115,7 +129,7 @@ export function DefaultMinimap() {
|
|||
editor.centerOnPoint(point)
|
||||
}
|
||||
|
||||
const pagePoint = minimap.getPagePoint(e.clientX, e.clientY)
|
||||
const pagePoint = minimapRef.current.getPagePoint(e.clientX, e.clientY)
|
||||
|
||||
const screenPoint = editor.pageToScreen(pagePoint)
|
||||
|
||||
|
|
@ -130,7 +144,7 @@ export function DefaultMinimap() {
|
|||
|
||||
editor.dispatch(info)
|
||||
},
|
||||
[editor, minimap]
|
||||
[editor]
|
||||
)
|
||||
|
||||
const onWheel = React.useCallback(
|
||||
|
|
@ -150,73 +164,16 @@ export function DefaultMinimap() {
|
|||
[editor]
|
||||
)
|
||||
|
||||
// Update the minimap's dpr when the dpr changes
|
||||
useQuickReactor(
|
||||
'update when dpr changes',
|
||||
() => {
|
||||
const dpr = devicePixelRatio.get()
|
||||
minimap.setDpr(dpr)
|
||||
const isDarkMode = useIsDarkMode()
|
||||
|
||||
const canvas = rCanvas.current as HTMLCanvasElement
|
||||
const rect = canvas.getBoundingClientRect()
|
||||
const width = rect.width * dpr
|
||||
const height = rect.height * dpr
|
||||
|
||||
// These must happen in order
|
||||
canvas.width = width
|
||||
canvas.height = height
|
||||
minimap.canvasScreenBounds.set(rect.x, rect.y, width, height)
|
||||
|
||||
minimap.cvs = rCanvas.current
|
||||
},
|
||||
[devicePixelRatio, minimap]
|
||||
)
|
||||
|
||||
useQuickReactor(
|
||||
'minimap render when pagebounds or collaborators changes',
|
||||
() => {
|
||||
const shapeIdsOnCurrentPage = editor.getCurrentPageShapeIds()
|
||||
const commonBoundsOfAllShapesOnCurrentPage = editor.getCurrentPageBounds()
|
||||
const viewportPageBounds = editor.getViewportPageBounds()
|
||||
|
||||
const _dpr = devicePixelRatio.get() // dereference
|
||||
|
||||
minimap.contentPageBounds = commonBoundsOfAllShapesOnCurrentPage
|
||||
? Box.Expand(commonBoundsOfAllShapesOnCurrentPage, viewportPageBounds)
|
||||
: viewportPageBounds
|
||||
|
||||
minimap.updateContentScreenBounds()
|
||||
|
||||
// All shape bounds
|
||||
|
||||
const allShapeBounds = [] as (Box & { id: TLShapeId })[]
|
||||
|
||||
shapeIdsOnCurrentPage.forEach((id) => {
|
||||
let pageBounds = editor.getShapePageBounds(id) as Box & { id: TLShapeId }
|
||||
if (!pageBounds) return
|
||||
|
||||
const pageMask = editor.getShapeMask(id)
|
||||
|
||||
if (pageMask) {
|
||||
const intersection = intersectPolygonPolygon(pageMask, pageBounds.corners)
|
||||
if (!intersection) {
|
||||
return
|
||||
}
|
||||
pageBounds = Box.FromPoints(intersection) as Box & { id: TLShapeId }
|
||||
}
|
||||
|
||||
if (pageBounds) {
|
||||
pageBounds.id = id // kinda dirty but we want to include the id here
|
||||
allShapeBounds.push(pageBounds)
|
||||
}
|
||||
React.useEffect(() => {
|
||||
// need to wait a tick for next theme css to be applied
|
||||
// otherwise the minimap will render with the wrong colors
|
||||
setTimeout(() => {
|
||||
minimapRef.current?.updateColors()
|
||||
minimapRef.current?.render()
|
||||
})
|
||||
|
||||
minimap.pageBounds = allShapeBounds
|
||||
minimap.collaborators = presences.get()
|
||||
minimap.render()
|
||||
},
|
||||
[editor, minimap]
|
||||
)
|
||||
}, [isDarkMode])
|
||||
|
||||
return (
|
||||
<div className="tlui-minimap">
|
||||
|
|
|
|||
|
|
@ -1,114 +1,159 @@
|
|||
import {
|
||||
Box,
|
||||
ComputedCache,
|
||||
Editor,
|
||||
PI2,
|
||||
TLInstancePresence,
|
||||
TLShapeId,
|
||||
TLShape,
|
||||
Vec,
|
||||
atom,
|
||||
clamp,
|
||||
computed,
|
||||
react,
|
||||
uniqueId,
|
||||
} from '@tldraw/editor'
|
||||
import { getRgba } from './getRgba'
|
||||
import { BufferStuff, appendVertices, setupWebGl } from './minimap-webgl-setup'
|
||||
import { pie, rectangle, roundedRectangle } from './minimap-webgl-shapes'
|
||||
|
||||
export class MinimapManager {
|
||||
constructor(public editor: Editor) {}
|
||||
|
||||
dpr = 1
|
||||
|
||||
colors = {
|
||||
shapeFill: 'rgba(144, 144, 144, .1)',
|
||||
selectFill: '#2f80ed',
|
||||
viewportFill: 'rgba(144, 144, 144, .1)',
|
||||
disposables = [] as (() => void)[]
|
||||
close = () => this.disposables.forEach((d) => d())
|
||||
gl: ReturnType<typeof setupWebGl>
|
||||
shapeGeometryCache: ComputedCache<Float32Array | null, TLShape>
|
||||
constructor(
|
||||
public editor: Editor,
|
||||
public readonly elem: HTMLCanvasElement
|
||||
) {
|
||||
this.gl = setupWebGl(elem)
|
||||
this.shapeGeometryCache = editor.store.createComputedCache('webgl-geometry', (r: TLShape) => {
|
||||
const bounds = editor.getShapeMaskedPageBounds(r.id)
|
||||
if (!bounds) return null
|
||||
const arr = new Float32Array(12)
|
||||
rectangle(arr, 0, bounds.x, bounds.y, bounds.w, bounds.h)
|
||||
return arr
|
||||
})
|
||||
this.colors = this._getColors()
|
||||
this.disposables.push(this._listenForCanvasResize(), react('minimap render', this.render))
|
||||
}
|
||||
|
||||
id = uniqueId()
|
||||
cvs: HTMLCanvasElement | null = null
|
||||
pageBounds: (Box & { id: TLShapeId })[] = []
|
||||
collaborators: TLInstancePresence[] = []
|
||||
private _getColors() {
|
||||
const style = getComputedStyle(this.editor.getContainer())
|
||||
|
||||
canvasScreenBounds = new Box()
|
||||
canvasPageBounds = new Box()
|
||||
return {
|
||||
shapeFill: getRgba(style.getPropertyValue('--color-text-3').trim()),
|
||||
selectFill: getRgba(style.getPropertyValue('--color-selected').trim()),
|
||||
viewportFill: getRgba(style.getPropertyValue('--color-muted-1').trim()),
|
||||
}
|
||||
}
|
||||
|
||||
contentPageBounds = new Box()
|
||||
contentScreenBounds = new Box()
|
||||
private colors: ReturnType<MinimapManager['_getColors']>
|
||||
// this should be called after dark/light mode changes have propagated to the dom
|
||||
updateColors() {
|
||||
this.colors = this._getColors()
|
||||
}
|
||||
|
||||
readonly id = uniqueId()
|
||||
@computed
|
||||
getDpr() {
|
||||
return this.editor.getInstanceState().devicePixelRatio
|
||||
}
|
||||
|
||||
@computed
|
||||
getContentPageBounds() {
|
||||
const viewportPageBounds = this.editor.getViewportPageBounds()
|
||||
const commonShapeBounds = this.editor.getCurrentPageBounds()
|
||||
return commonShapeBounds
|
||||
? Box.Expand(commonShapeBounds, viewportPageBounds)
|
||||
: viewportPageBounds
|
||||
}
|
||||
|
||||
@computed
|
||||
getContentScreenBounds() {
|
||||
const contentPageBounds = this.getContentPageBounds()
|
||||
const topLeft = this.editor.pageToScreen(contentPageBounds.point)
|
||||
const bottomRight = this.editor.pageToScreen(
|
||||
new Vec(contentPageBounds.maxX, contentPageBounds.maxY)
|
||||
)
|
||||
return new Box(topLeft.x, topLeft.y, bottomRight.x - topLeft.x, bottomRight.y - topLeft.y)
|
||||
}
|
||||
|
||||
private _getCanvasBoundingRect() {
|
||||
const { x, y, width, height } = this.elem.getBoundingClientRect()
|
||||
return new Box(x, y, width, height)
|
||||
}
|
||||
|
||||
private readonly canvasBoundingClientRect = atom('canvasBoundingClientRect', new Box())
|
||||
|
||||
getCanvasScreenBounds() {
|
||||
return this.canvasBoundingClientRect.get()
|
||||
}
|
||||
|
||||
private _listenForCanvasResize() {
|
||||
const observer = new ResizeObserver(() => {
|
||||
const rect = this._getCanvasBoundingRect()
|
||||
this.canvasBoundingClientRect.set(rect)
|
||||
})
|
||||
observer.observe(this.elem)
|
||||
return () => observer.disconnect()
|
||||
}
|
||||
|
||||
@computed
|
||||
getCanvasSize() {
|
||||
const rect = this.canvasBoundingClientRect.get()
|
||||
const dpr = this.getDpr()
|
||||
return new Vec(rect.width * dpr, rect.height * dpr)
|
||||
}
|
||||
|
||||
@computed
|
||||
getCanvasClientPosition() {
|
||||
return this.canvasBoundingClientRect.get().point
|
||||
}
|
||||
|
||||
originPagePoint = new Vec()
|
||||
originPageCenter = new Vec()
|
||||
|
||||
isInViewport = false
|
||||
|
||||
debug = false
|
||||
|
||||
setDpr(dpr: number) {
|
||||
this.dpr = +dpr.toFixed(2)
|
||||
}
|
||||
|
||||
updateContentScreenBounds = () => {
|
||||
const { contentScreenBounds, contentPageBounds: content, canvasScreenBounds: canvas } = this
|
||||
|
||||
let { x, y, w, h } = contentScreenBounds
|
||||
|
||||
if (content.w > content.h) {
|
||||
const sh = canvas.w / (content.w / content.h)
|
||||
if (sh > canvas.h) {
|
||||
x = (canvas.w - canvas.w * (canvas.h / sh)) / 2
|
||||
y = 0
|
||||
w = canvas.w * (canvas.h / sh)
|
||||
h = canvas.h
|
||||
} else {
|
||||
x = 0
|
||||
y = (canvas.h - sh) / 2
|
||||
w = canvas.w
|
||||
h = sh
|
||||
}
|
||||
} else if (content.w < content.h) {
|
||||
const sw = canvas.h / (content.h / content.w)
|
||||
x = (canvas.w - sw) / 2
|
||||
y = 0
|
||||
w = sw
|
||||
h = canvas.h
|
||||
} else {
|
||||
x = canvas.h / 2
|
||||
y = 0
|
||||
w = canvas.h
|
||||
h = canvas.h
|
||||
}
|
||||
|
||||
contentScreenBounds.set(x, y, w, h)
|
||||
}
|
||||
|
||||
/** Get the canvas's true bounds converted to page bounds. */
|
||||
updateCanvasPageBounds = () => {
|
||||
const { canvasPageBounds, canvasScreenBounds, contentPageBounds, contentScreenBounds } = this
|
||||
@computed getCanvasPageBounds() {
|
||||
const canvasScreenBounds = this.getCanvasScreenBounds()
|
||||
const contentPageBounds = this.getContentPageBounds()
|
||||
|
||||
canvasPageBounds.set(
|
||||
0,
|
||||
0,
|
||||
contentPageBounds.width / (contentScreenBounds.width / canvasScreenBounds.width),
|
||||
contentPageBounds.height / (contentScreenBounds.height / canvasScreenBounds.height)
|
||||
)
|
||||
const aspectRatio = canvasScreenBounds.width / canvasScreenBounds.height
|
||||
|
||||
canvasPageBounds.center = contentPageBounds.center
|
||||
let targetWidth = contentPageBounds.width
|
||||
let targetHeight = targetWidth / aspectRatio
|
||||
if (targetHeight < contentPageBounds.height) {
|
||||
targetHeight = contentPageBounds.height
|
||||
targetWidth = targetHeight * aspectRatio
|
||||
}
|
||||
|
||||
getScreenPoint = (x: number, y: number) => {
|
||||
const { canvasScreenBounds } = this
|
||||
|
||||
const screenX = (x - canvasScreenBounds.minX) * this.dpr
|
||||
const screenY = (y - canvasScreenBounds.minY) * this.dpr
|
||||
|
||||
return { x: screenX, y: screenY }
|
||||
const box = new Box(0, 0, targetWidth, targetHeight)
|
||||
box.center = contentPageBounds.center
|
||||
return box
|
||||
}
|
||||
|
||||
getPagePoint = (x: number, y: number) => {
|
||||
const { contentPageBounds, contentScreenBounds, canvasPageBounds } = this
|
||||
@computed getCanvasPageBoundsArray() {
|
||||
const { x, y, w, h } = this.getCanvasPageBounds()
|
||||
return new Float32Array([x, y, w, h])
|
||||
}
|
||||
|
||||
const { x: screenX, y: screenY } = this.getScreenPoint(x, y)
|
||||
getPagePoint = (clientX: number, clientY: number) => {
|
||||
const canvasPageBounds = this.getCanvasPageBounds()
|
||||
const canvasScreenBounds = this.getCanvasScreenBounds()
|
||||
|
||||
return new Vec(
|
||||
canvasPageBounds.minX + (screenX * contentPageBounds.width) / contentScreenBounds.width,
|
||||
canvasPageBounds.minY + (screenY * contentPageBounds.height) / contentScreenBounds.height,
|
||||
1
|
||||
)
|
||||
// first offset the canvas position
|
||||
let x = clientX - canvasScreenBounds.x
|
||||
let y = clientY - canvasScreenBounds.y
|
||||
|
||||
// then multiply by the ratio between the page and screen bounds
|
||||
x *= canvasPageBounds.width / canvasScreenBounds.width
|
||||
y *= canvasPageBounds.height / canvasScreenBounds.height
|
||||
|
||||
// then add the canvas page bounds' offset
|
||||
x += canvasPageBounds.minX
|
||||
y += canvasPageBounds.minY
|
||||
|
||||
return new Vec(x, y, 1)
|
||||
}
|
||||
|
||||
minimapScreenPointToPagePoint = (
|
||||
|
|
@ -123,13 +168,13 @@ export class MinimapManager {
|
|||
let { x: px, y: py } = this.getPagePoint(x, y)
|
||||
|
||||
if (clampToBounds) {
|
||||
const shapesPageBounds = this.editor.getCurrentPageBounds()
|
||||
const shapesPageBounds = this.editor.getCurrentPageBounds() ?? new Box()
|
||||
const vpPageBounds = viewportPageBounds
|
||||
|
||||
const minX = (shapesPageBounds?.minX ?? 0) - vpPageBounds.width / 2
|
||||
const maxX = (shapesPageBounds?.maxX ?? 0) + vpPageBounds.width / 2
|
||||
const minY = (shapesPageBounds?.minY ?? 0) - vpPageBounds.height / 2
|
||||
const maxY = (shapesPageBounds?.maxY ?? 0) + vpPageBounds.height / 2
|
||||
const minX = shapesPageBounds.minX - vpPageBounds.width / 2
|
||||
const maxX = shapesPageBounds.maxX + vpPageBounds.width / 2
|
||||
const minY = shapesPageBounds.minY - vpPageBounds.height / 2
|
||||
const maxY = shapesPageBounds.maxY + vpPageBounds.height / 2
|
||||
|
||||
const lx = Math.max(0, minX + vpPageBounds.width - px)
|
||||
const rx = Math.max(0, -(maxX - vpPageBounds.width - px))
|
||||
|
|
@ -171,209 +216,110 @@ export class MinimapManager {
|
|||
return new Vec(px, py)
|
||||
}
|
||||
|
||||
updateColors = () => {
|
||||
const style = getComputedStyle(this.editor.getContainer())
|
||||
|
||||
this.colors = {
|
||||
shapeFill: style.getPropertyValue('--color-text-3').trim(),
|
||||
selectFill: style.getPropertyValue('--color-selected').trim(),
|
||||
viewportFill: style.getPropertyValue('--color-muted-1').trim(),
|
||||
}
|
||||
}
|
||||
|
||||
render = () => {
|
||||
const { cvs, pageBounds } = this
|
||||
this.updateCanvasPageBounds()
|
||||
// make sure we update when dark mode switches
|
||||
const context = this.gl.context
|
||||
const canvasSize = this.getCanvasSize()
|
||||
|
||||
const { editor, canvasScreenBounds, canvasPageBounds, contentPageBounds, contentScreenBounds } =
|
||||
this
|
||||
const { width: cw, height: ch } = canvasScreenBounds
|
||||
this.gl.setCanvasPageBounds(this.getCanvasPageBoundsArray())
|
||||
|
||||
const selectedShapeIds = new Set(editor.getSelectedShapeIds())
|
||||
const viewportPageBounds = editor.getViewportPageBounds()
|
||||
this.elem.width = canvasSize.x
|
||||
this.elem.height = canvasSize.y
|
||||
context.viewport(0, 0, canvasSize.x, canvasSize.y)
|
||||
|
||||
if (!cvs || !pageBounds) {
|
||||
return
|
||||
// this affects which color transparent shapes are blended with
|
||||
// during rendering. If we were to invert this any shapes narrower
|
||||
// than 1 px in screen space would have much lower contrast. e.g.
|
||||
// draw shapes on a large canvas.
|
||||
if (this.editor.user.getIsDarkMode()) {
|
||||
context.clearColor(1, 1, 1, 0)
|
||||
} else {
|
||||
context.clearColor(0, 0, 0, 0)
|
||||
}
|
||||
|
||||
const ctx = cvs.getContext('2d')!
|
||||
context.clear(context.COLOR_BUFFER_BIT)
|
||||
|
||||
if (!ctx) {
|
||||
throw new Error('Minimap (shapes): Could not get context')
|
||||
}
|
||||
const selectedShapes = new Set(this.editor.getSelectedShapeIds())
|
||||
|
||||
ctx.resetTransform()
|
||||
ctx.globalAlpha = 1
|
||||
ctx.clearRect(0, 0, cw, ch)
|
||||
const colors = this.colors
|
||||
let selectedShapeOffset = 0
|
||||
let unselectedShapeOffset = 0
|
||||
|
||||
// Transform canvas
|
||||
const ids = this.editor.getCurrentPageShapeIdsSorted()
|
||||
|
||||
const sx = contentScreenBounds.width / contentPageBounds.width
|
||||
const sy = contentScreenBounds.height / contentPageBounds.height
|
||||
for (let i = 0, len = ids.length; i < len; i++) {
|
||||
const shapeId = ids[i]
|
||||
const geometry = this.shapeGeometryCache.get(shapeId)
|
||||
if (!geometry) continue
|
||||
|
||||
ctx.translate((cw - contentScreenBounds.width) / 2, (ch - contentScreenBounds.height) / 2)
|
||||
ctx.scale(sx, sy)
|
||||
ctx.translate(-contentPageBounds.minX, -contentPageBounds.minY)
|
||||
const len = geometry.length
|
||||
|
||||
// shapes
|
||||
const shapesPath = new Path2D()
|
||||
const selectedPath = new Path2D()
|
||||
|
||||
const { shapeFill, selectFill, viewportFill } = this.colors
|
||||
|
||||
// When there are many shapes, don't draw rounded rectangles;
|
||||
// consider using the shape's size instead.
|
||||
|
||||
let pb: Box & { id: TLShapeId }
|
||||
for (let i = 0, n = pageBounds.length; i < n; i++) {
|
||||
pb = pageBounds[i]
|
||||
;(selectedShapeIds.has(pb.id) ? selectedPath : shapesPath).rect(
|
||||
pb.minX,
|
||||
pb.minY,
|
||||
pb.width,
|
||||
pb.height
|
||||
)
|
||||
}
|
||||
|
||||
// Fill the shapes paths
|
||||
ctx.fillStyle = shapeFill
|
||||
ctx.fill(shapesPath)
|
||||
|
||||
// Fill the selected paths
|
||||
ctx.fillStyle = selectFill
|
||||
ctx.fill(selectedPath)
|
||||
|
||||
if (this.debug) {
|
||||
// Page bounds
|
||||
const commonBounds = Box.Common(pageBounds)
|
||||
const { minX, minY, width, height } = commonBounds
|
||||
ctx.strokeStyle = 'green'
|
||||
ctx.lineWidth = 2 / sx
|
||||
ctx.strokeRect(minX + 1 / sx, minY + 1 / sy, width - 2 / sx, height - 2 / sy)
|
||||
}
|
||||
|
||||
// Brush
|
||||
{
|
||||
const { brush } = editor.getInstanceState()
|
||||
if (brush) {
|
||||
const { x, y, w, h } = brush
|
||||
ctx.beginPath()
|
||||
MinimapManager.sharpRect(ctx, x, y, w, h)
|
||||
ctx.closePath()
|
||||
ctx.fillStyle = viewportFill
|
||||
ctx.fill()
|
||||
if (selectedShapes.has(shapeId)) {
|
||||
appendVertices(this.gl.selectedShapes, selectedShapeOffset, geometry)
|
||||
selectedShapeOffset += len
|
||||
} else {
|
||||
appendVertices(this.gl.unselectedShapes, unselectedShapeOffset, geometry)
|
||||
unselectedShapeOffset += len
|
||||
}
|
||||
}
|
||||
|
||||
// Viewport
|
||||
{
|
||||
const { minX, minY, width, height } = viewportPageBounds
|
||||
|
||||
ctx.beginPath()
|
||||
|
||||
const rx = 12 / sx
|
||||
const ry = 12 / sx
|
||||
MinimapManager.roundedRect(
|
||||
ctx,
|
||||
minX,
|
||||
minY,
|
||||
width,
|
||||
height,
|
||||
Math.min(width / 4, rx),
|
||||
Math.min(height / 4, ry)
|
||||
)
|
||||
ctx.closePath()
|
||||
ctx.fillStyle = viewportFill
|
||||
ctx.fill()
|
||||
|
||||
if (this.debug) {
|
||||
ctx.strokeStyle = 'orange'
|
||||
ctx.strokeRect(minX + 1 / sx, minY + 1 / sy, width - 2 / sx, height - 2 / sy)
|
||||
}
|
||||
this.drawViewport()
|
||||
this.drawShapes(this.gl.unselectedShapes, unselectedShapeOffset, colors.shapeFill)
|
||||
this.drawShapes(this.gl.selectedShapes, selectedShapeOffset, colors.selectFill)
|
||||
this.drawCollaborators()
|
||||
}
|
||||
|
||||
// Show collaborator cursors
|
||||
|
||||
// Padding for canvas bounds edges
|
||||
const px = 2.5 / sx
|
||||
const py = 2.5 / sy
|
||||
|
||||
const currentPageId = editor.getCurrentPageId()
|
||||
|
||||
let collaborator: TLInstancePresence
|
||||
for (let i = 0; i < this.collaborators.length; i++) {
|
||||
collaborator = this.collaborators[i]
|
||||
if (collaborator.currentPageId !== currentPageId) {
|
||||
continue
|
||||
private drawShapes(stuff: BufferStuff, len: number, color: Float32Array) {
|
||||
this.gl.prepareTriangles(stuff, len)
|
||||
this.gl.setFillColor(color)
|
||||
this.gl.drawTriangles(len)
|
||||
}
|
||||
|
||||
ctx.beginPath()
|
||||
ctx.ellipse(
|
||||
clamp(collaborator.cursor.x, canvasPageBounds.minX + px, canvasPageBounds.maxX - px),
|
||||
clamp(collaborator.cursor.y, canvasPageBounds.minY + py, canvasPageBounds.maxY - py),
|
||||
5 / sx,
|
||||
5 / sy,
|
||||
0,
|
||||
0,
|
||||
PI2
|
||||
)
|
||||
ctx.fillStyle = collaborator.color
|
||||
ctx.fill()
|
||||
private drawViewport() {
|
||||
const viewport = this.editor.getViewportPageBounds()
|
||||
const zoom = this.getCanvasPageBounds().width / this.getCanvasScreenBounds().width
|
||||
const len = roundedRectangle(this.gl.viewport.vertices, viewport, 4 * zoom)
|
||||
|
||||
this.gl.prepareTriangles(this.gl.viewport, len)
|
||||
this.gl.setFillColor(this.colors.viewportFill)
|
||||
this.gl.drawTriangles(len)
|
||||
}
|
||||
|
||||
if (this.debug) {
|
||||
ctx.lineWidth = 2 / sx
|
||||
drawCollaborators() {
|
||||
const collaborators = this.editor.getCollaboratorsOnCurrentPage()
|
||||
if (!collaborators.length) return
|
||||
|
||||
{
|
||||
// Minimap Bounds
|
||||
const { minX, minY, width, height } = contentPageBounds
|
||||
ctx.strokeStyle = 'red'
|
||||
ctx.strokeRect(minX + 1 / sx, minY + 1 / sy, width - 2 / sx, height - 2 / sy)
|
||||
const zoom = this.getCanvasPageBounds().width / this.getCanvasScreenBounds().width
|
||||
|
||||
// just draw a little circle for each collaborator
|
||||
const numSegmentsPerCircle = 20
|
||||
const dataSizePerCircle = numSegmentsPerCircle * 6
|
||||
const totalSize = dataSizePerCircle * collaborators.length
|
||||
|
||||
// expand vertex array if needed
|
||||
if (this.gl.collaborators.vertices.length < totalSize) {
|
||||
this.gl.collaborators.vertices = new Float32Array(totalSize)
|
||||
}
|
||||
|
||||
{
|
||||
// Canvas Bounds
|
||||
const { minX, minY, width, height } = canvasPageBounds
|
||||
ctx.strokeStyle = 'blue'
|
||||
ctx.strokeRect(minX + 1 / sx, minY + 1 / sy, width - 2 / sx, height - 2 / sy)
|
||||
const vertices = this.gl.collaborators.vertices
|
||||
let offset = 0
|
||||
for (const { cursor } of collaborators) {
|
||||
pie(vertices, {
|
||||
center: Vec.From(cursor),
|
||||
radius: 2 * zoom,
|
||||
offset,
|
||||
numArcSegments: numSegmentsPerCircle,
|
||||
})
|
||||
offset += dataSizePerCircle
|
||||
}
|
||||
|
||||
this.gl.prepareTriangles(this.gl.collaborators, totalSize)
|
||||
|
||||
offset = 0
|
||||
for (const { color } of collaborators) {
|
||||
this.gl.setFillColor(getRgba(color))
|
||||
this.gl.context.drawArrays(this.gl.context.TRIANGLES, offset / 2, dataSizePerCircle / 2)
|
||||
offset += dataSizePerCircle
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
static roundedRect(
|
||||
ctx: CanvasRenderingContext2D | Path2D,
|
||||
x: number,
|
||||
y: number,
|
||||
width: number,
|
||||
height: number,
|
||||
rx: number,
|
||||
ry: number
|
||||
) {
|
||||
if (rx < 1 && ry < 1) {
|
||||
ctx.rect(x, y, width, height)
|
||||
return
|
||||
}
|
||||
|
||||
ctx.moveTo(x + rx, y)
|
||||
ctx.lineTo(x + width - rx, y)
|
||||
ctx.quadraticCurveTo(x + width, y, x + width, y + ry)
|
||||
ctx.lineTo(x + width, y + height - ry)
|
||||
ctx.quadraticCurveTo(x + width, y + height, x + width - rx, y + height)
|
||||
ctx.lineTo(x + rx, y + height)
|
||||
ctx.quadraticCurveTo(x, y + height, x, y + height - ry)
|
||||
ctx.lineTo(x, y + ry)
|
||||
ctx.quadraticCurveTo(x, y, x + rx, y)
|
||||
}
|
||||
|
||||
static sharpRect(
|
||||
ctx: CanvasRenderingContext2D | Path2D,
|
||||
x: number,
|
||||
y: number,
|
||||
width: number,
|
||||
height: number,
|
||||
_rx?: number,
|
||||
_ry?: number
|
||||
) {
|
||||
ctx.rect(x, y, width, height)
|
||||
}
|
||||
}
|
||||
|
|
|
|||
16
packages/tldraw/src/lib/ui/components/Minimap/getRgba.ts
Normal file
16
packages/tldraw/src/lib/ui/components/Minimap/getRgba.ts
Normal file
|
|
@ -0,0 +1,16 @@
|
|||
const memo = {} as Record<string, Float32Array>
|
||||
|
||||
export function getRgba(colorString: string) {
|
||||
if (memo[colorString]) {
|
||||
return memo[colorString]
|
||||
}
|
||||
const canvas = document.createElement('canvas')
|
||||
const context = canvas.getContext('2d')
|
||||
context!.fillStyle = colorString
|
||||
context!.fillRect(0, 0, 1, 1)
|
||||
const [r, g, b, a] = context!.getImageData(0, 0, 1, 1).data
|
||||
const result = new Float32Array([r / 255, g / 255, b / 255, a / 255])
|
||||
|
||||
memo[colorString] = result
|
||||
return result
|
||||
}
|
||||
|
|
@ -0,0 +1,148 @@
|
|||
import { roundedRectangleDataSize } from './minimap-webgl-shapes'
|
||||
|
||||
export function setupWebGl(canvas: HTMLCanvasElement | null) {
|
||||
if (!canvas) throw new Error('Canvas element not found')
|
||||
|
||||
const context = canvas.getContext('webgl2', {
|
||||
premultipliedAlpha: false,
|
||||
})
|
||||
if (!context) throw new Error('Failed to get webgl2 context')
|
||||
|
||||
const vertexShaderSourceCode = `#version 300 es
|
||||
precision mediump float;
|
||||
|
||||
in vec2 shapeVertexPosition;
|
||||
|
||||
uniform vec4 canvasPageBounds;
|
||||
|
||||
// taken (with thanks) from
|
||||
// https://webglfundamentals.org/webgl/lessons/webgl-2d-matrices.html
|
||||
void main() {
|
||||
// convert the position from pixels to 0.0 to 1.0
|
||||
vec2 zeroToOne = (shapeVertexPosition - canvasPageBounds.xy) / canvasPageBounds.zw;
|
||||
|
||||
// convert from 0->1 to 0->2
|
||||
vec2 zeroToTwo = zeroToOne * 2.0;
|
||||
|
||||
// convert from 0->2 to -1->+1 (clipspace)
|
||||
vec2 clipSpace = zeroToTwo - 1.0;
|
||||
|
||||
gl_Position = vec4(clipSpace * vec2(1, -1), 0, 1);
|
||||
}`
|
||||
|
||||
const vertexShader = context.createShader(context.VERTEX_SHADER)
|
||||
if (!vertexShader) {
|
||||
throw new Error('Failed to create vertex shader')
|
||||
}
|
||||
context.shaderSource(vertexShader, vertexShaderSourceCode)
|
||||
context.compileShader(vertexShader)
|
||||
if (!context.getShaderParameter(vertexShader, context.COMPILE_STATUS)) {
|
||||
throw new Error('Failed to compile vertex shader')
|
||||
}
|
||||
|
||||
const fragmentShaderSourceCode = `#version 300 es
|
||||
precision mediump float;
|
||||
|
||||
uniform vec4 fillColor;
|
||||
out vec4 outputColor;
|
||||
|
||||
void main() {
|
||||
outputColor = fillColor;
|
||||
}`
|
||||
|
||||
const fragmentShader = context.createShader(context.FRAGMENT_SHADER)
|
||||
if (!fragmentShader) {
|
||||
throw new Error('Failed to create fragment shader')
|
||||
}
|
||||
context.shaderSource(fragmentShader, fragmentShaderSourceCode)
|
||||
context.compileShader(fragmentShader)
|
||||
if (!context.getShaderParameter(fragmentShader, context.COMPILE_STATUS)) {
|
||||
throw new Error('Failed to compile fragment shader')
|
||||
}
|
||||
|
||||
const program = context.createProgram()
|
||||
if (!program) {
|
||||
throw new Error('Failed to create program')
|
||||
}
|
||||
context.attachShader(program, vertexShader)
|
||||
context.attachShader(program, fragmentShader)
|
||||
context.linkProgram(program)
|
||||
if (!context.getProgramParameter(program, context.LINK_STATUS)) {
|
||||
throw new Error('Failed to link program')
|
||||
}
|
||||
context.useProgram(program)
|
||||
|
||||
const shapeVertexPositionAttributeLocation = context.getAttribLocation(
|
||||
program,
|
||||
'shapeVertexPosition'
|
||||
)
|
||||
if (shapeVertexPositionAttributeLocation < 0) {
|
||||
throw new Error('Failed to get shapeVertexPosition attribute location')
|
||||
}
|
||||
context.enableVertexAttribArray(shapeVertexPositionAttributeLocation)
|
||||
|
||||
const canvasPageBoundsLocation = context.getUniformLocation(program, 'canvasPageBounds')
|
||||
const fillColorLocation = context.getUniformLocation(program, 'fillColor')
|
||||
|
||||
const selectedShapesBuffer = context.createBuffer()
|
||||
if (!selectedShapesBuffer) throw new Error('Failed to create buffer')
|
||||
|
||||
const unselectedShapesBuffer = context.createBuffer()
|
||||
if (!unselectedShapesBuffer) throw new Error('Failed to create buffer')
|
||||
|
||||
return {
|
||||
context,
|
||||
selectedShapes: allocateBuffer(context, 1024),
|
||||
unselectedShapes: allocateBuffer(context, 4096),
|
||||
viewport: allocateBuffer(context, roundedRectangleDataSize),
|
||||
collaborators: allocateBuffer(context, 1024),
|
||||
|
||||
prepareTriangles(stuff: BufferStuff, len: number) {
|
||||
context.bindBuffer(context.ARRAY_BUFFER, stuff.buffer)
|
||||
context.bufferData(context.ARRAY_BUFFER, stuff.vertices, context.STATIC_DRAW, 0, len)
|
||||
context.enableVertexAttribArray(shapeVertexPositionAttributeLocation)
|
||||
context.vertexAttribPointer(
|
||||
shapeVertexPositionAttributeLocation,
|
||||
2,
|
||||
context.FLOAT,
|
||||
false,
|
||||
0,
|
||||
0
|
||||
)
|
||||
},
|
||||
|
||||
drawTriangles(len: number) {
|
||||
context.drawArrays(context.TRIANGLES, 0, len / 2)
|
||||
},
|
||||
|
||||
setFillColor(color: Float32Array) {
|
||||
context.uniform4fv(fillColorLocation, color)
|
||||
},
|
||||
|
||||
setCanvasPageBounds(bounds: Float32Array) {
|
||||
context.uniform4fv(canvasPageBoundsLocation, bounds)
|
||||
},
|
||||
}
|
||||
}
|
||||
|
||||
export type BufferStuff = ReturnType<typeof allocateBuffer>
|
||||
|
||||
function allocateBuffer(context: WebGL2RenderingContext, size: number) {
|
||||
const buffer = context.createBuffer()
|
||||
if (!buffer) throw new Error('Failed to create buffer')
|
||||
return { buffer, vertices: new Float32Array(size) }
|
||||
}
|
||||
|
||||
export function appendVertices(bufferStuff: BufferStuff, offset: number, data: Float32Array) {
|
||||
let len = bufferStuff.vertices.length
|
||||
while (len < offset + data.length) {
|
||||
len *= 2
|
||||
}
|
||||
if (len != bufferStuff.vertices.length) {
|
||||
const newVertices = new Float32Array(len)
|
||||
newVertices.set(bufferStuff.vertices)
|
||||
bufferStuff.vertices = newVertices
|
||||
}
|
||||
|
||||
bufferStuff.vertices.set(data, offset)
|
||||
}
|
||||
|
|
@ -0,0 +1,144 @@
|
|||
import { Box, HALF_PI, PI, PI2, Vec } from '@tldraw/editor'
|
||||
|
||||
export const numArcSegmentsPerCorner = 10
|
||||
|
||||
export const roundedRectangleDataSize =
|
||||
// num triangles in corners
|
||||
4 * 6 * numArcSegmentsPerCorner +
|
||||
// num triangles in center rect
|
||||
12 +
|
||||
// num triangles in outer rects
|
||||
4 * 12
|
||||
|
||||
export function pie(
|
||||
array: Float32Array,
|
||||
{
|
||||
center,
|
||||
radius,
|
||||
numArcSegments = 20,
|
||||
startAngle = 0,
|
||||
endAngle = PI2,
|
||||
offset = 0,
|
||||
}: {
|
||||
center: Vec
|
||||
radius: number
|
||||
numArcSegments?: number
|
||||
startAngle?: number
|
||||
endAngle?: number
|
||||
offset?: number
|
||||
}
|
||||
) {
|
||||
const angle = (endAngle - startAngle) / numArcSegments
|
||||
let i = offset
|
||||
for (let a = startAngle; a < endAngle; a += angle) {
|
||||
array[i++] = center.x
|
||||
array[i++] = center.y
|
||||
array[i++] = center.x + Math.cos(a) * radius
|
||||
array[i++] = center.y + Math.sin(a) * radius
|
||||
array[i++] = center.x + Math.cos(a + angle) * radius
|
||||
array[i++] = center.y + Math.sin(a + angle) * radius
|
||||
}
|
||||
return array
|
||||
}
|
||||
|
||||
/** @internal **/
|
||||
export function rectangle(
|
||||
array: Float32Array,
|
||||
offset: number,
|
||||
x: number,
|
||||
y: number,
|
||||
w: number,
|
||||
h: number
|
||||
) {
|
||||
array[offset++] = x
|
||||
array[offset++] = y
|
||||
array[offset++] = x
|
||||
array[offset++] = y + h
|
||||
array[offset++] = x + w
|
||||
array[offset++] = y
|
||||
|
||||
array[offset++] = x + w
|
||||
array[offset++] = y
|
||||
array[offset++] = x
|
||||
array[offset++] = y + h
|
||||
array[offset++] = x + w
|
||||
array[offset++] = y + h
|
||||
}
|
||||
|
||||
export function roundedRectangle(data: Float32Array, box: Box, radius: number): number {
|
||||
const numArcSegments = numArcSegmentsPerCorner
|
||||
radius = Math.min(radius, Math.min(box.w, box.h) / 2)
|
||||
// first draw the inner box
|
||||
const innerBox = Box.ExpandBy(box, -radius)
|
||||
if (innerBox.w <= 0 || innerBox.h <= 0) {
|
||||
// just draw a circle
|
||||
pie(data, { center: box.center, radius: radius, numArcSegments: numArcSegmentsPerCorner * 4 })
|
||||
return numArcSegmentsPerCorner * 4 * 6
|
||||
}
|
||||
let offset = 0
|
||||
// draw center rect first
|
||||
rectangle(data, offset, innerBox.minX, innerBox.minY, innerBox.w, innerBox.h)
|
||||
offset += 12
|
||||
// then top rect
|
||||
rectangle(data, offset, innerBox.minX, box.minY, innerBox.w, radius)
|
||||
offset += 12
|
||||
// then right rect
|
||||
rectangle(data, offset, innerBox.maxX, innerBox.minY, radius, innerBox.h)
|
||||
offset += 12
|
||||
// then bottom rect
|
||||
rectangle(data, offset, innerBox.minX, innerBox.maxY, innerBox.w, radius)
|
||||
offset += 12
|
||||
// then left rect
|
||||
rectangle(data, offset, box.minX, innerBox.minY, radius, innerBox.h)
|
||||
offset += 12
|
||||
|
||||
// draw the corners
|
||||
|
||||
// top left
|
||||
pie(data, {
|
||||
numArcSegments,
|
||||
offset,
|
||||
center: innerBox.point,
|
||||
radius,
|
||||
startAngle: PI,
|
||||
endAngle: PI * 1.5,
|
||||
})
|
||||
|
||||
offset += numArcSegments * 6
|
||||
|
||||
// top right
|
||||
pie(data, {
|
||||
numArcSegments,
|
||||
offset,
|
||||
center: Vec.Add(innerBox.point, new Vec(innerBox.w, 0)),
|
||||
radius,
|
||||
startAngle: PI * 1.5,
|
||||
endAngle: PI2,
|
||||
})
|
||||
|
||||
offset += numArcSegments * 6
|
||||
|
||||
// bottom right
|
||||
pie(data, {
|
||||
numArcSegments,
|
||||
offset,
|
||||
center: Vec.Add(innerBox.point, innerBox.size),
|
||||
radius,
|
||||
startAngle: 0,
|
||||
endAngle: HALF_PI,
|
||||
})
|
||||
|
||||
offset += numArcSegments * 6
|
||||
|
||||
// bottom left
|
||||
pie(data, {
|
||||
numArcSegments,
|
||||
offset,
|
||||
center: Vec.Add(innerBox.point, new Vec(0, innerBox.h)),
|
||||
radius,
|
||||
startAngle: HALF_PI,
|
||||
endAngle: PI,
|
||||
})
|
||||
|
||||
return roundedRectangleDataSize
|
||||
}
|
||||
Loading…
Reference in a new issue