Examples of jinngine.math.Vector3.sub()

jinngine.math.Vector3.sub()
Substract two vectors and place the result in v1. v2 is not modified. @param v1 a not null reference, store the difference @param v2 a not null reference @throws NullPointerException if v1 or v2 is null

        // check the next vertex from poly2
        if (poly2iter.hasNext()) {
          p2 = poly2iter.next();
          
          // distance less that epsilon
          if (p2.sub(p1).xynorm() >= epsilon)
            return false;
        } else {
          // no more vertices
          return true;
        }

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        } else {
          // no more vertices
          return true;
        }    
      } else {
        if (p2.sub(p1).xynorm() < epsilon) {
          traversalStarted = true;
        }
      }
    }

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    p2p1.z = 0; // we only work in the xy plane
    final double t = x.sub(p1).dot(p2p1) / p2p1.squaredNorm();
    if (t>= -epsilon && t <= 1+epsilon) {
      // closest point on line
      Vector3 lp = p1.add(p2.sub(p1).multiply(t));
      if (  lp.sub(x).xynorm() < epsilon ) {
        intPoint.assign(lp);
        return true;
      }
    }

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