342 lines
9.2 KiB
TypeScript
342 lines
9.2 KiB
TypeScript
import type { NodeInstance, Socket } from '@nodarium/types';
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import { getContext, setContext } from 'svelte';
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import { SvelteMap, SvelteSet } from 'svelte/reactivity';
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import type { OrthographicCamera, Vector3 } from 'three';
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import type { GraphManager } from './graph-manager.svelte';
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const graphStateKey = Symbol('graph-state');
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export function getGraphState() {
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return getContext<GraphState>(graphStateKey);
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}
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export function setGraphState(graphState: GraphState) {
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return setContext(graphStateKey, graphState);
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}
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const graphManagerKey = Symbol('graph-manager');
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export function getGraphManager() {
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return getContext<GraphManager>(graphManagerKey);
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}
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export function setGraphManager(manager: GraphManager) {
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return setContext(graphManagerKey, manager);
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}
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type EdgeData = {
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x1: number;
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y1: number;
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points: Vector3[];
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};
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export class GraphState {
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constructor(private graph: GraphManager) {
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$effect.root(() => {
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$effect(() => {
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localStorage.setItem(
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'cameraPosition',
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`[${this.cameraPosition[0]},${this.cameraPosition[1]},${this.cameraPosition[2]}]`
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);
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});
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});
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const storedPosition = localStorage.getItem('cameraPosition');
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if (storedPosition) {
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try {
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const d = JSON.parse(storedPosition);
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this.cameraPosition[0] = d[0];
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this.cameraPosition[1] = d[1];
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this.cameraPosition[2] = d[2];
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} catch (e) {
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console.log('Failed to parsed stored camera position', e);
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}
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}
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}
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width = $state(100);
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height = $state(100);
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hoveredEdgeId = $state<string | null>(null);
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edges = new SvelteMap<string, EdgeData>();
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wrapper = $state<HTMLDivElement>(null!);
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rect: DOMRect = $derived(
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(this.wrapper && this.width && this.height)
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? this.wrapper.getBoundingClientRect()
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: new DOMRect(0, 0, 0, 0)
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);
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camera = $state<OrthographicCamera>(null!);
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cameraPosition: [number, number, number] = $state([140, 100, 3.5]);
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clipboard: null | {
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nodes: NodeInstance[];
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edges: [number, number, number, string][];
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} = null;
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cameraBounds = $derived([
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this.cameraPosition[0] - this.width / this.cameraPosition[2] / 2,
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this.cameraPosition[0] + this.width / this.cameraPosition[2] / 2,
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this.cameraPosition[1] - this.height / this.cameraPosition[2] / 2,
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this.cameraPosition[1] + this.height / this.cameraPosition[2] / 2
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]);
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boxSelection = $state(false);
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edgeEndPosition = $state<[number, number] | null>();
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addMenuPosition = $state<[number, number] | null>(null);
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snapToGrid = $state(false);
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showGrid = $state(true);
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showHelp = $state(false);
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cameraDown = [0, 0];
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mouseDownNodeId = -1;
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isPanning = $state(false);
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isDragging = $state(false);
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hoveredNodeId = $state(-1);
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mousePosition = $state([0, 0]);
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mouseDown = $state<[number, number] | null>(null);
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activeNodeId = $state(-1);
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selectedNodes = new SvelteSet<number>();
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activeSocket = $state<Socket | null>(null);
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hoveredSocket = $state<Socket | null>(null);
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possibleSockets = $state<Socket[]>([]);
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possibleSocketIds = $derived(
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new SvelteSet(this.possibleSockets.map((s) => `${s.node.id}-${s.index}`))
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);
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getEdges() {
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return $state.snapshot(this.edges);
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}
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clearSelection() {
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this.selectedNodes.clear();
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}
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isBodyFocused = () => document?.activeElement?.nodeName !== 'INPUT';
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setEdgeGeometry(edgeId: string, x1: number, y1: number, points: Vector3[]) {
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this.edges.set(edgeId, { x1, y1, points });
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}
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removeEdgeGeometry(edgeId: string) {
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this.edges.delete(edgeId);
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}
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getEdgeData() {
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return this.edges;
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}
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updateNodePosition(node: NodeInstance) {
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if (
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node.state.x === node.position[0]
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&& node.state.y === node.position[1]
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) {
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delete node.state.x;
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delete node.state.y;
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}
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if (node.state['x'] !== undefined && node.state['y'] !== undefined) {
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if (node.state.ref) {
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node.state.ref.style.setProperty('--nx', `${node.state.x * 10}px`);
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node.state.ref.style.setProperty('--ny', `${node.state.y * 10}px`);
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}
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} else {
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if (node.state.ref) {
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node.state.ref.style.setProperty('--nx', `${node.position[0] * 10}px`);
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node.state.ref.style.setProperty('--ny', `${node.position[1] * 10}px`);
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}
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}
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}
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getSnapLevel() {
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const z = this.cameraPosition[2];
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if (z > 66) {
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return 8;
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} else if (z > 55) {
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return 4;
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} else if (z > 11) {
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return 2;
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}
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return 1;
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}
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getSocketPosition(
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node: NodeInstance,
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index: string | number
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): [number, number] {
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if (typeof index === 'number') {
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return [
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(node?.state?.x ?? node.position[0]) + 20,
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(node?.state?.y ?? node.position[1]) + 2.5 + 10 * index
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];
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} else {
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const _index = Object.keys(node.state?.type?.inputs || {}).indexOf(index);
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return [
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node?.state?.x ?? node.position[0],
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(node?.state?.y ?? node.position[1]) + 10 + 10 * _index
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];
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}
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}
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private nodeHeightCache: Record<string, number> = {};
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getNodeHeight(nodeTypeId: string) {
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if (nodeTypeId in this.nodeHeightCache) {
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return this.nodeHeightCache[nodeTypeId];
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}
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const node = this.graph.getNodeType(nodeTypeId);
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if (!node?.inputs) {
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return 5;
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}
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const height = 5
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+ 10
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* Object.keys(node.inputs).filter(
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(p) =>
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p !== 'seed'
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&& node?.inputs
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&& !(node?.inputs?.[p] !== undefined && 'setting' in node.inputs[p])
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&& node.inputs[p].hidden !== true
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).length;
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this.nodeHeightCache[nodeTypeId] = height;
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return height;
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}
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copyNodes() {
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if (this.activeNodeId === -1 && !this.selectedNodes?.size) {
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return;
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}
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let nodes = [
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this.activeNodeId,
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...(this.selectedNodes?.values() || [])
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]
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.map((id) => this.graph.getNode(id))
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.filter(b => !!b);
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const edges = this.graph.getEdgesBetweenNodes(nodes);
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nodes = nodes.map((node) => ({
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...node,
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position: [
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this.mousePosition[0] - node.position[0],
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this.mousePosition[1] - node.position[1]
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],
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tmp: undefined
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}));
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this.clipboard = {
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nodes: nodes,
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edges: edges
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};
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}
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pasteNodes() {
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if (!this.clipboard) return;
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const nodes = this.clipboard.nodes
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.map((node) => {
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node.position[0] = this.mousePosition[0] - node.position[0];
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node.position[1] = this.mousePosition[1] - node.position[1];
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return node;
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})
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.filter(Boolean) as NodeInstance[];
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const newNodes = this.graph.createGraph(nodes, this.clipboard.edges);
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this.selectedNodes.clear();
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for (const node of newNodes) {
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this.selectedNodes.add(node.id);
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}
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}
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setDownSocket(socket: Socket) {
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this.activeSocket = socket;
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let { node, index, position } = socket;
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// remove existing edge
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if (typeof index === 'string') {
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const edges = this.graph.getEdgesToNode(node);
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for (const edge of edges) {
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if (edge[3] === index) {
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node = edge[0];
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index = edge[1];
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position = this.getSocketPosition(node, index);
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this.graph.removeEdge(edge);
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break;
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}
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}
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}
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this.mouseDown = position;
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this.activeSocket = {
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node,
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index,
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position
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};
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this.possibleSockets = this.graph
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.getPossibleSockets(this.activeSocket)
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.map(([node, index]) => {
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return {
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node,
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index,
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position: this.getSocketPosition(node, index)
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};
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});
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}
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projectScreenToWorld(x: number, y: number): [number, number] {
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return [
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this.cameraPosition[0]
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+ (x - this.width / 2) / this.cameraPosition[2],
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this.cameraPosition[1]
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+ (y - this.height / 2) / this.cameraPosition[2]
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];
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}
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getNodeIdFromEvent(event: MouseEvent) {
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let clickedNodeId = -1;
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const mx = event.clientX - this.rect.x;
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const my = event.clientY - this.rect.y;
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if (event.button === 0) {
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// check if the clicked element is a node
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if (event.target instanceof HTMLElement) {
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const nodeElement = event.target.closest('.node');
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const nodeId = nodeElement?.getAttribute?.('data-node-id');
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if (nodeId) {
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clickedNodeId = parseInt(nodeId, 10);
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}
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}
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// if we do not have an active node,
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// we are going to check if we clicked on a node by coordinates
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if (clickedNodeId === -1) {
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const [downX, downY] = this.projectScreenToWorld(mx, my);
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for (const node of this.graph.nodes.values()) {
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const x = node.position[0];
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const y = node.position[1];
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const height = this.getNodeHeight(node.type);
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if (downX > x && downX < x + 20 && downY > y && downY < y + height) {
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clickedNodeId = node.id;
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break;
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}
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}
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}
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}
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return clickedNodeId;
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}
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isNodeInView(node: NodeInstance) {
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const height = this.getNodeHeight(node.type);
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const width = 20;
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return (
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node.position[0] > this.cameraBounds[0] - width
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&& node.position[0] < this.cameraBounds[1]
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&& node.position[1] > this.cameraBounds[2] - height
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&& node.position[1] < this.cameraBounds[3]
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);
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}
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openNodePalette() {
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this.addMenuPosition = [this.mousePosition[0], this.mousePosition[1]];
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}
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}
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