awv3/plugins/csys/helpers.js

⚡ AWV3 embedded CAD

import { calculateIntersection, calculateInCenter, roundVector } from "./calculations";
export function getPositionFromSelection(selectedMaterials) {
  var position = undefined;
  var meta = selectedMaterials.map(function (m) {
    return {
      type: m.meta.type,
      start: m.meta.start,
      end: m.meta.end,
      position: m.meta.position,
      center: m.meta.center
    };
  });

  switch (meta.length) {
    case 1:
      {
        if (meta[0].type === 'point') {
          // 1 vertex => take position
          position = meta[0].position;
        } else if (meta[0].type === 'line') {
          // TODO: detect b-spline-curve, it doesn't work with them
          // 1 line => calculate midpoint
          position = meta[0].start.clone().add(meta[0].end).divideScalar(2);
        } else if (meta[0].type === 'arc') {
          // 1 arc => take center
          position = meta[0].center;
        }

        break;
      }

    case 2:
      {
        if (meta[0].type === 'point' && meta[1].type === 'point') {
          // 2 vertices => calculate midpoint
          position = meta[0].position.clone().add(meta[1].position).divideScalar(2);
        } else if (meta[0].type === 'line' && meta[1].type === 'line') {
          // TODO: detect b-spline-curve, it doesn't work with them
          // 2 lines => calculate intersection
          var intersectionPoint = calculateIntersection(meta[0].start, meta[0].end, meta[1].start, meta[1].end);

          if (intersectionPoint === undefined) {
            console.log('%c no intersection found', 'color: orange');
            break;
          } // round intersection point coordinates to match json protocol accuracy


          intersectionPoint = roundVector(intersectionPoint);
          position = intersectionPoint;
        }

        break;
      }

    case 3:
      {
        if (meta[0].type === 'line' && meta[1].type === 'line' && meta[2].type === 'line') {
          // TODO: detect b-spline-curve, it doesn't work with them
          // 3 lines => calculate incenter (Inkreismittelpunkt)
          var inCenter = calculateInCenter(meta[0].start, meta[0].end, meta[1].start, meta[1].end, meta[2].start, meta[2].end);

          if (inCenter === undefined) {
            console.log('%c no in center found', 'color: orange');
            break;
          }

          position = inCenter;
        }

        break;
      }

    default: // leave position as it is

  }

  return position;
}