jsketcher/web/app/cad/assembly/dof/sixDOF.ts

import { Plane } from 'geom/impl/plane';
import {AssemblyDOF, ModificationResponse} from "./assemblyDOF";
import Vector, {ORIGIN} from "math/vector";
import {FaceTouchAlignConstraint} from "../constraints/faceTouchAlign";
import {PPDOF} from "./PPDOF";
import {EdgeAlignConstraint} from "../constraints/edgeAlign";
import {EEDOF} from "./EEDOF";
import {Matrix3x4} from "math/matrix";

export class SixDOF implements AssemblyDOF {

  description = 'full freedom';

  rotate(axis: Vector, angle: number, location: Matrix3x4, strict: boolean): ModificationResponse {
    return ModificationResponse.REJECTED;
  }

  translate(dir: Vector, location: Matrix3x4, strict: boolean): ModificationResponse {
    return ModificationResponse.REJECTED;
  }

  applyTouchAlign(constr: FaceTouchAlignConstraint): AssemblyDOF {

    const vecA = constr.movingPart.location.applyNoTranslation(constr.movingFace.normal());
    const vecB = constr.fixedPart.location.applyNoTranslation(constr.fixedFace.normal())._negate();

    const location = constr.movingPart.root.location;

    Matrix3x4.rotationFromVectorToVector(vecA, vecB, ORIGIN, location);

    const ptFixed = constr.fixedPart.location.apply(constr.fixedFace.favorablePoint);
    const ptMoving = constr.movingPart.location.apply(constr.movingFace.favorablePoint);

    const dir = ptFixed._minus(ptMoving);

    location.translate(dir.x, dir.y, dir.z);

    return new PPDOF(new Plane(vecB.copy(), vecB.dot(ptFixed)));
  }

  applyEdgeAlign(constr: EdgeAlignConstraint): AssemblyDOF {
    const vecA = constr.movingPart.location.applyNoTranslation(constr.movingEdge.brepEdge.halfEdge1.tangentAtStart());
    const vecB = constr.fixedPart.location.applyNoTranslation(constr.fixedEdge.brepEdge.halfEdge1.tangentAtStart());

    if (vecA.dot(vecB)< 0) {
      vecB._negate();
    }

    const location = constr.movingPart.root.location;

    Matrix3x4.rotationFromVectorToVector(vecA, vecB, ORIGIN, location);

    const ptFixed = constr.fixedPart.location.apply(constr.fixedEdge.favorablePoint);
    const ptMoving = constr.movingPart.location.apply(constr.movingEdge.favorablePoint);

    const dir = ptFixed._minus(ptMoving);

    location.translateVec(dir);


    return new EEDOF(constr.fixedEdge.favorablePoint, vecB);
  }

}