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Java Fixture.raycast方法代码示例

本文整理汇总了Java中org.jbox2d.dynamics.Fixture.raycast方法的典型用法代码示例。如果您正苦于以下问题:Java Fixture.raycast方法的具体用法?Java Fixture.raycast怎么用?Java Fixture.raycast使用的例子?那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在org.jbox2d.dynamics.Fixture的用法示例。


在下文中一共展示了Fixture.raycast方法的1个代码示例,这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞,您的评价将有助于系统推荐出更棒的Java代码示例。

示例1: reportFixture

import org.jbox2d.dynamics.Fixture; //导入方法依赖的package包/类
@Override
public boolean reportFixture(Fixture fixture) {
  if (fixture.isSensor()) {
    return true;
  }
  final Shape shape = fixture.getShape();
  Body body = fixture.getBody();
  int childCount = shape.getChildCount();
  for (int childIndex = 0; childIndex < childCount; childIndex++) {
    AABB aabb = fixture.getAABB(childIndex);
    final float aabblowerBoundx = aabb.lowerBound.x - system.m_particleDiameter;
    final float aabblowerBoundy = aabb.lowerBound.y - system.m_particleDiameter;
    final float aabbupperBoundx = aabb.upperBound.x + system.m_particleDiameter;
    final float aabbupperBoundy = aabb.upperBound.y + system.m_particleDiameter;
    int firstProxy =
        lowerBound(
            system.m_proxyBuffer,
            system.m_proxyCount,
            computeTag(system.m_inverseDiameter * aabblowerBoundx, system.m_inverseDiameter
                * aabblowerBoundy));
    int lastProxy =
        upperBound(
            system.m_proxyBuffer,
            system.m_proxyCount,
            computeTag(system.m_inverseDiameter * aabbupperBoundx, system.m_inverseDiameter
                * aabbupperBoundy));

    for (int proxy = firstProxy; proxy != lastProxy; ++proxy) {
      int a = system.m_proxyBuffer[proxy].index;
      Vec2 ap = system.m_positionBuffer.data[a];
      if (aabblowerBoundx <= ap.x && ap.x <= aabbupperBoundx && aabblowerBoundy <= ap.y
          && ap.y <= aabbupperBoundy) {
        Vec2 av = system.m_velocityBuffer.data[a];
        final Vec2 temp = tempVec;
        Transform.mulTransToOutUnsafe(body.m_xf0, ap, temp);
        Transform.mulToOutUnsafe(body.m_xf, temp, input.p1);
        input.p2.x = ap.x + step.dt * av.x;
        input.p2.y = ap.y + step.dt * av.y;
        input.maxFraction = 1;
        if (fixture.raycast(output, input, childIndex)) {
          final Vec2 p = tempVec;
          p.x =
              (1 - output.fraction) * input.p1.x + output.fraction * input.p2.x
                  + Settings.linearSlop * output.normal.x;
          p.y =
              (1 - output.fraction) * input.p1.y + output.fraction * input.p2.y
                  + Settings.linearSlop * output.normal.y;

          final float vx = step.inv_dt * (p.x - ap.x);
          final float vy = step.inv_dt * (p.y - ap.y);
          av.x = vx;
          av.y = vy;
          final float particleMass = system.getParticleMass();
          final float ax = particleMass * (av.x - vx);
          final float ay = particleMass * (av.y - vy);
          Vec2 b = output.normal;
          final float fdn = ax * b.x + ay * b.y;
          final Vec2 f = tempVec2;
          f.x = fdn * b.x;
          f.y = fdn * b.y;
          body.applyLinearImpulse(f, p, true);
        }
      }
    }
  }
  return true;
}
 
开发者ID:jfcameron,项目名称:G2Dj,代码行数:68,代码来源:ParticleSystem.java


注:本文中的org.jbox2d.dynamics.Fixture.raycast方法示例由纯净天空整理自Github/MSDocs等开源代码及文档管理平台,相关代码片段筛选自各路编程大神贡献的开源项目,源码版权归原作者所有,传播和使用请参考对应项目的License;未经允许,请勿转载。