本文整理了Java中pythagoras.f.Vector类的一些代码示例，展示了Vector类的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。Vector类的具体详情如下：
包路径：pythagoras.f.Vector
类名称：Vector

Vector介绍

[英]Represents a vector in a plane.
[中]表示平面中的向量。

代码示例

代码示例来源：origin: com.samskivert/pythagoras

/**
 * Transforms a vector as specified, storing the result in the vector provided.
 * @return a reference to the result vector, for chaining.
 */
public static Vector transform (float x, float y, float sx, float sy, float sina, float cosa,
                Vector result) {
  return result.set((x*cosa - y*sina) * sx, (x*sina + y*cosa) * sy);
}

代码示例来源：origin: com.samskivert/pythagoras

@Override // from interface IVector
public Vector clone () {
  return new Vector(this);
}

代码示例来源：origin: com.samskivert/pythagoras

/**
 * Sets this vector's magnitude, preserving its angle.
 */
public Vector setLength (float length) {
  return normalizeLocal().scaleLocal(length);
}

代码示例来源：origin: com.samskivert/pythagoras

@Override // from IRay2
public Vector getNearestPoint (IVector point, Vector result) {
  if (result == null) {
    result = new Vector();
  }
  float r = point.subtract(origin).dot(direction);
  result.set(origin.add(direction.scale(r)));
  return result;
}

代码示例来源：origin: threerings/playn

protected void onMove(float x, float y) {
 Vector delta = new Vector(x, y).subtractLocal(_pstart);
 layer.setTranslation(_lstart.x + delta.x, _lstart.y + delta.y);
}

代码示例来源：origin: com.samskivert/pythagoras

@Override // from IRay2
public boolean getIntersection (IVector center, float radius, Vector result) {
  // see if we start inside the circle
  if (origin.distanceSq(center) <= radius*radius) {
    result.set(origin);
    return true;
  }
  // then if we intersect the circle
  float ax = origin.x - center.x(), ay = origin.y - center.y();
  float b = 2f*(direction.x*ax + direction.y*ay);
  float c = ax*ax + ay*ay - radius*radius;
  float radicand = b*b - 4f*c;
  if (radicand < 0f) {
    return false;
  }
  float t = (-b - FloatMath.sqrt(radicand)) * 0.5f;
  boolean isect = (t >= 0f);
  if (isect) {
    origin.addScaled(direction, t, result);
  }
  return isect;
}

代码示例来源：origin: com.samskivert/pythagoras

/**
 * Sets this vector's angle, preserving its magnitude.
 * @return a reference to this vector, for chaining.
 */
public Vector setAngle (float angle) {
  float l = length();
  return set(l * FloatMath.cos(angle), l * FloatMath.sin(angle));
}

代码示例来源：origin: threerings/tripleplay

@Override protected void update (Clock clock, Entities entities) {
  Point p = _pos;
  Vector v = _vel;
  int delta = clock.dt;
  for (int ii = 0, ll = entities.size(); ii < ll; ii++) {
    int eid = entities.get(ii);
    pos.get(eid, p); // get our current pos
    p.x = wrapx(p.x); // wrap it around the screen if necessary
    p.y = wrapy(p.y);
    opos.set(eid, p); // copy wrapped pos to opos
    vel.get(eid, v).scaleLocal(delta); // turn velocity into delta pos
    pos.set(eid, p.x + v.x, p.y + v.y); // add velocity (but don't wrap)
  }
}

代码示例来源：origin: com.samskivert/pythagoras

/** Adds a scaled vector in-place to this one.
 * @return a reference to this vector, for chaining. */
public Vector addScaledLocal (IVector other, float v) {
  return addScaled(other, v, this);
}

代码示例来源：origin: com.samskivert/pythagoras

/** Adds a vector in-place to this one.
 * @return a reference to this vector, for chaining. */
public Vector addLocal (IVector other) {
  return add(other, this);
}

代码示例来源：origin: samskivert/pythagoras

@Override // from IRay2
public Vector getNearestPoint (IVector point, Vector result) {
  if (result == null) {
    result = new Vector();
  }
  float r = point.subtract(origin).dot(direction);
  result.set(origin.add(direction.scale(r)));
  return result;
}

代码示例来源：origin: playn/playn

protected void doMove(float x, float y) {
 Vector delta = new Vector(x, y).subtractLocal(_pstart);
 layer.setTranslation(_lstart.x + delta.x, _lstart.y + delta.y);
}

代码示例来源：origin: samskivert/pythagoras

@Override // from IRay2
public boolean getIntersection (IVector center, float radius, Vector result) {
  // see if we start inside the circle
  if (origin.distanceSq(center) <= radius*radius) {
    result.set(origin);
    return true;
  }
  // then if we intersect the circle
  float ax = origin.x - center.x(), ay = origin.y - center.y();
  float b = 2f*(direction.x*ax + direction.y*ay);
  float c = ax*ax + ay*ay - radius*radius;
  float radicand = b*b - 4f*c;
  if (radicand < 0f) {
    return false;
  }
  float t = (-b - FloatMath.sqrt(radicand)) * 0.5f;
  boolean isect = (t >= 0f);
  if (isect) {
    origin.addScaled(direction, t, result);
  }
  return isect;
}

代码示例来源：origin: samskivert/pythagoras

/**
 * Sets this vector's angle, preserving its magnitude.
 * @return a reference to this vector, for chaining.
 */
public Vector setAngle (float angle) {
  float l = length();
  return set(l * FloatMath.cos(angle), l * FloatMath.sin(angle));
}

代码示例来源：origin: samskivert/pythagoras

/** Adds a scaled vector in-place to this one.
 * @return a reference to this vector, for chaining. */
public Vector addScaledLocal (IVector other, float v) {
  return addScaled(other, v, this);
}

代码示例来源：origin: com.samskivert/pythagoras

/** Adds a vector in-place to this one.
 * @return a reference to this vector, for chaining. */
public Vector addLocal (float x, float y) {
  return add(x, y, this);
}

代码示例来源：origin: com.samskivert/pythagoras

/** Transforms a vector as specified (as a point, accounting for translation), storing the
 * result in the vector provided.
 * @return a reference to the result vector, for chaining. */
public static Vector transform (float x, float y, float sx, float sy, float sina, float cosa,
                float tx, float ty, Vector result) {
  return result.set((x*cosa - y*sina) * sx + tx, (x*sina + y*cosa) * sy + ty);
}

代码示例来源：origin: com.samskivert/pythagoras

@Override // from interface IVector
public Vector negate () {
  return negate(new Vector());
}

代码示例来源：origin: threerings/playn

@Override
public void onMouseDrag(MotionEvent event) {
 Vector delta = new Vector(event.x(), event.y()).subtractLocal(_pstart);
 label.setTranslation(_lstart.x + delta.x, _lstart.y + delta.y);
 modify(event);
 motionLabel.set("mouse drag", describe(event, ""));
}
@Override

代码示例来源：origin: samskivert/pythagoras

/**
 * Sets this vector's magnitude, preserving its angle.
 */
public Vector setLength (float length) {
  return normalizeLocal().scaleLocal(length);
}