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diagram add references positioning

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This commit is contained in:
Jan Prochazka
2022-01-16 17:07:27 +01:00
parent 22054cad12
commit 6e50979045
3 changed files with 48 additions and 13 deletions
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35
packages/web/src/designer/GraphLayout.ts
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@@ -1,5 +1,5 @@
import _ from 'lodash';
import { IBoxBounds, rectangleDistance, rectangleIntersectArea, Vector2D } from './designerMath';
import { IBoxBounds, IPoint, rectangleDistance, rectangleIntersectArea, Vector2D } from './designerMath';
const MIN_NODE_DISTANCE = 50;
const SPRING_LENGTH = 100;
@@ -18,7 +18,13 @@ const SCORE_ASPECT_RATIO = 1.6;
class GraphNode {
neightboors: GraphNode[] = [];
radius: number;
constructor(public graph: GraphDefinition, public designerId: string, public width: number, public height: number) {}
constructor(
public graph: GraphDefinition,
public designerId: string,
public width: number,
public height: number,
public fixedPosition: IPoint
) {}
initialize() {
this.radius = Math.sqrt((this.width * this.width) / 4 + (this.height * this.height) / 4);
@@ -43,8 +49,8 @@ export class GraphDefinition {
nodes: { [designerId: string]: GraphNode } = {};
edges: GraphEdge[] = [];
addNode(designerId: string, width: number, height: number) {
this.nodes[designerId] = new GraphNode(this, designerId, width, height);
addNode(designerId: string, width: number, height: number, fixedPosition: IPoint) {
this.nodes[designerId] = new GraphNode(this, designerId, width, height, fixedPosition);
}
addEdge(sourceId: string, targetId: string) {
@@ -94,6 +100,7 @@ class LayoutNode {
}
translate(dx: number, dy: number) {
if (this.node.fixedPosition) return this;
return new LayoutNode(this.node, this.x + dx, this.y + dy);
}
@@ -199,14 +206,18 @@ export class GraphLayout {
constructor(public graph: GraphDefinition) {}
static createCircle(graph: GraphDefinition): GraphLayout {
static createCircle(graph: GraphDefinition, middle: IPoint = { x: 0, y: 0 }): GraphLayout {
const res = new GraphLayout(graph);
if (_.isEmpty(graph.nodes)) return res;
const addedNodes = new Set<string>();
const circleSortedNodes: GraphNode[] = [];
addNodeNeighboors(_.values(graph.nodes), circleSortedNodes, addedNodes);
addNodeNeighboors(
_.values(graph.nodes).filter(x => !x.fixedPosition),
circleSortedNodes,
addedNodes
);
const nodeRadius = _.max(circleSortedNodes.map(x => x.radius));
const nodeCount = circleSortedNodes.length;
const radius = (nodeCount * nodeRadius) / (2 * Math.PI) + nodeRadius;
@@ -214,9 +225,18 @@ export class GraphLayout {
let angle = 0;
const dangle = (2 * Math.PI) / circleSortedNodes.length;
for (const node of circleSortedNodes) {
res.nodes[node.designerId] = new LayoutNode(node, Math.sin(angle) * radius, Math.cos(angle) * radius);
res.nodes[node.designerId] = new LayoutNode(
node,
middle.x + Math.sin(angle) * radius,
middle.y + Math.cos(angle) * radius
);
angle += dangle;
}
for (const node of _.values(graph.nodes).filter(x => x.fixedPosition)) {
res.nodes[node.designerId] = new LayoutNode(node, node.fixedPosition.x, node.fixedPosition.y);
}
res.fillEdges();
return res;
@@ -289,6 +309,7 @@ export class GraphLayout {
}
tryMoveNode(node: LayoutNode): GraphLayout[] {
if (node.node.fixedPosition) return [];
return [
this.changePositions(x => (x == node ? node.translate(MOVE_STEP, 0) : x)),
this.changePositions(x => (x == node ? node.translate(-MOVE_STEP, 0) : x)),