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solver springy overlaps

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This commit is contained in:
Jan Prochazka 2022-01-06 11:43:56 +01:00
parent 3a810e5bb5
commit 75e93ec11e
1 changed files with 35 additions and 3 deletions
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38
packages/web/src/designer/SpringyAlg.ts
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@ -9,6 +9,8 @@ const NODE_DISTANCE_OVERRIDE = 0.05;
const MAX_SPEED = 1000;
const STEP_COUNT = 100;
const TIMESTEP = 0.2;
const MAX_OVERLAPS_MOVES = 100;
const SOLVE_OVERLAPS_FROM_STEP = 90;
export interface ISpringyNodePosition {
nodeData: any;
@ -349,6 +351,34 @@ export class ForceDirectedLayout {
});
}
solveOverlaps() {
this.eachNode((n1, point1) => {
for (let i = 0; i < MAX_OVERLAPS_MOVES; i += 1) {
let overlap = false;
this.eachNode((n2, point2) => {
if (n1 == n2) return;
const distance = rectangle_distance(
point1.position.x - n1.width / 2,
point1.position.y - n1.height / 2,
point1.position.x + n1.width / 2,
point1.position.y + n1.height / 2,
point2.position.x - n2.width / 2,
point2.position.y - n2.height / 2,
point2.position.x + n2.width / 2,
point2.position.y + n2.height / 2
);
if (distance == null) {
overlap = true;
}
});
if (!overlap) {
break;
}
point1.position = point1.position.add(point1.velocity.multiply(TIMESTEP));
}
});
}
// Calculate the total kinetic energy of the system
totalEnergy() {
var energy = 0.0;
@ -394,7 +424,7 @@ export class ForceDirectedLayout {
// this._stop = true;
// }
tick(timestep: number) {
tick(timestep: number, stepNumber) {
// for(let nodeid in this.nodePoints) {
// console.log(this.nodePoints[nodeid].position);
// }
@ -403,11 +433,13 @@ export class ForceDirectedLayout {
this.attractToCentre();
this.updateVelocity(timestep);
this.updatePosition(timestep);
if (stepNumber >= SOLVE_OVERLAPS_FROM_STEP) {
this.solveOverlaps();
}
}
compute(): ISpringyNodePosition[] {
for (let i = 0; i < STEP_COUNT; i += 1) {
this.tick(TIMESTEP);
this.tick(TIMESTEP, i);
}
const positions = [];
const boundingBox = this.getBoundingBox();