Ejemplo n.º 1
0
//触屏事件处理
void HelloWorld::onTouchesBegan(const std::vector<Touch*>& touches, Event *unused_event)
{
    //屏幕转换到射线
    kmVec3    tPt;
    kmVec3	  tDir;
    // 获取点在视图中的坐标
    CCPoint touchLocation = touches[0]->getLocation();
    auto    visibleSize = Director::getInstance()->getVisibleSize();
    auto	origin = Director::getInstance()->getVisibleOrigin();
    //线条容器
    std::vector<LightLineRender::Line> lines;
    //设置线条位置

    //闪电的起点和终点
    Vec2	tFishPos(Vec2(visibleSize / 2) + origin);
    tFishPos = m_FishLayer->GetSpritePosition() + origin;
    Vec3 segStart = Vec3(0,0,-8);
    Vec3 segEnd   = Vec3(touchLocation.x - tFishPos.x ,touchLocation.y - tFishPos.y ,-8);
    //取得方向
    Vec3  dir = segEnd - segStart ;
    float fLength = dir.length();
    dir.normalize();
    //顺时针转动45度形成一个偏移点做为第一个闪电链线段。
    Vec3  rotate_left;
    Mat4  rotate_left_Mat;
    kmMat4RotationZ(&rotate_left_Mat,MATH_DEG_TO_RAD(-45));
    kmVec3TransformCoord(&rotate_left,&dir,&rotate_left_Mat);
    rotate_left.normalize();
    //逆时针转动45度形成一个偏移点做为第一个闪电链线段。
    Vec3  rotate_right;
    Mat4  rotate_right_Mat;
    kmMat4RotationZ(&rotate_right_Mat,MATH_DEG_TO_RAD(45));
    kmVec3TransformCoord(&rotate_right,&dir,&rotate_right_Mat);
    rotate_right.normalize();

    //分成三段闪电链
    Vec3  v1_s = segStart ;
    Vec3  v1_e = segStart + dir * fLength / 4.0 + rotate_left * (fLength / 6.0);

    Vec3  v2_s = v1_e ;
    Vec3  v2_e = segStart + dir * fLength / 2.0 + rotate_right * (fLength / 6.0);

    Vec3  v3_s = v2_e ;
    Vec3  v3_e = segEnd;

    lines.push_back( LightLineRender::Line( v1_s, v1_e, 0 ) );
    lines.push_back( LightLineRender::Line( v2_s, v2_e, 0 ) );
    lines.push_back( LightLineRender::Line( v3_s, v3_e, 0 ) );
    //创建出闪光链
    LightLineRender*	_lighting = dynamic_cast<LightLineRender*>(getChildByTag(10));
    //使用线段容器创建闪电链
    _lighting->setLines( lines );
    _lighting->setPosition(tFishPos);
    //这一句可以让闪电链在1秒内渐渐消隐。它通过调节Shader中的u_color值从1变为0来实现。
    _lighting->OpenAlphaToZero(1.0);
    //击中乌龟，让乌龟翻身。
    m_FishLayer->AttackWuGui();
}
Ejemplo n.º 2
0
void lite3d_bounding_vol_translate(struct lite3d_bounding_vol *volOut,
    const struct lite3d_bounding_vol *volIn, const struct kmMat4 *tr)
{
    int i;
    //kmVec3 center;
    
    SDL_assert(volOut);
    SDL_assert(volIn);
    SDL_assert(tr);
    
    for (i = 0; i < 8; ++i)
    {
        kmVec3TransformCoord(&volOut->box[i], &volIn->box[i], tr);
    }

    kmVec3TransformCoord(&volOut->sphereCenter, &volIn->sphereCenter, tr);
    /* TODO: calculate radius */
    //kmVec3Subtract(&center, &volIn->sphereCenter, &volIn->box[0]);
    //kmVec3MultiplyMat4(&center, &center, tr);
    //volOut->radius = kmVec3Length(&center);
}
Ejemplo n.º 3
0
void LayerColor::draw(Renderer *renderer, const kmMat4 &transform, bool transformUpdated)
{
    _customCommand.init(_globalZOrder);
    _customCommand.func = CC_CALLBACK_0(LayerColor::onDraw, this, transform, transformUpdated);
    renderer->addCommand(&_customCommand);
    
    for(int i = 0; i < 4; ++i)
    {
        kmVec3 pos;
        pos.x = _squareVertices[i].x; pos.y = _squareVertices[i].y; pos.z = _positionZ;
        kmVec3TransformCoord(&pos, &pos, &_modelViewTransform);
        _noMVPVertices[i] = Vertex3F(pos.x,pos.y,pos.z);
    }
}
Ejemplo n.º 4
0
/* \brief calculates relative view coordinates for a point in world coordinates */
GLHCKAPI kmVec2* glhckCameraPointViewCoordinates(glhckCamera *object, kmVec2 *pOut, const kmVec3 *point)
{
  CALL(2, "%p, "VEC3S, pOut, VEC3(point));

  if (!glhckFrustumContainsPoint(&object->frustum, point))
    return NULL;

  kmVec3 p;
  kmVec3TransformCoord(&p, point, &object->view.viewProj);
  pOut->x = (p.x + 1)/2;
  pOut->y = (p.y + 1)/2;
  
  RET(2, VEC2S, VEC2(pOut));
  return pOut;
}
Ejemplo n.º 5
0
void vs(float* _in, float* _out)
{
    VSIn* in = (VSIn*)_in;
    VSOut* out = (VSOut*)_out;
    kmVec3TransformCoord(&out->position, &in->position, &mvp);
}