static int displayLight(gfluxstruct *gp)
{
int polys = 0;
double x,y;
double z;
double dx = 2.0/((double)_squares);
double dy = 2.0/((double)_squares);
glLoadIdentity();
glRotatef(gp->anglex,1,0,0);
glRotatef(gp->angley,0,1,0);
glRotatef(gp->anglez,0,0,1);
userRot(gp);
glScalef(1,1,(GLfloat)_waveHeight);
glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT);
for(x=-1;x<0.9999;x+=dx) {
glBegin(GL_QUAD_STRIP);
for(y=-1;y<=1;y+=dy) {
z = getGrid(gp, x,y,gp->time);
genColour(z);
glColor3fv(gp->colour);
glNormal3f(
getGrid(gp, x+dx,y,gp->time)-getGrid(gp, x-dx,y,gp->time),
getGrid(gp, x,y+dy,gp->time)-getGrid(gp, x,y-dy,gp->time),
1
);
glVertex3f(x,y,z);
z = getGrid(gp, x+dx,y,gp->time);
genColour(z);
glColor3fv(gp->colour);
glNormal3f(
getGrid(gp, x+dx+dx,y,gp->time)-getGrid(gp, x,y,gp->time),
getGrid(gp, x+dx,y+dy,gp->time)-getGrid(gp, x+dx,y-dy,gp->time),
1
);
glVertex3f(x+dx,y,z);
polys++;
}
glEnd();
}
if (! gp->button_down_p) {
gp->time -= _speed;
gp->anglex -= _rotationx;
gp->angley -= _rotationy;
gp->anglez -= _rotationz;
}
return polys;
}
static int displayWire(gfluxstruct *gp)
{
int polys = 0;
double x,y;
double z;
double dx1 = 2.0/((double)(_squares*_resolution)) - 0.00001;
double dy1 = 2.0/((double)(_squares*_resolution)) - 0.00001;
double dx2 = 2.0/((double)_squares) - 0.00001;
double dy2 = 2.0/((double)_squares) - 0.00001;
glLoadIdentity();
glRotatef(gp->anglex,1,0,0);
glRotatef(gp->angley,0,1,0);
glRotatef(gp->anglez,0,0,1);
userRot(gp);
glScalef(1,1,(GLfloat)_waveHeight);
glClear(GL_COLOR_BUFFER_BIT);
for(x=-1;x<=1;x+=dx2) {
glBegin(GL_LINE_STRIP);
for(y=-1;y<=1;y+=dy1) {
z = getGrid(gp, x,y,gp->time);
genColour(z);
glColor3fv(gp->colour);
glVertex3f(x,y,z);
polys++;
}
glEnd();
}
for(y=-1;y<=1;y+=dy2) {
glBegin(GL_LINE_STRIP);
for(x=-1;x<=1;x+=dx1) {
z = getGrid(gp, x,y,gp->time);
genColour(z);
glColor3fv(gp->colour);
glVertex3f(x,y,z);
polys++;
}
glEnd();
}
if (! gp->button_down_p) {
gp->time -= _speed;
gp->anglex -= _rotationx;
gp->angley -= _rotationy;
gp->anglez -= _rotationz;
}
return polys;
}
//---------------------------------------------------------------------
void BeamElement::_updateBillboardChains( Real time )
{
mCurrentFrequencyTime += time;
if (mCurrentFrequencyTime > mFrequencyTime || mFrequency == 0.0f)
{
// 如果目标位置为初始位置，就不进行更新，防止第一帧出现的位置不正确
if (mDestPos == Ogre::Vector3::UNIT_Y)
{
return;
}
Ogre::Vector3 originPos = mBasicNode->_getDerivedPosition();
// 如果初始点还没初始化（在LogicModel::addEffect中会把这个特效的位置设成一个很低的地方），也return
if ( originPos.y < -9000 )
{
return;
}
if (mBillboardChain)
{
Ogre::ColourValue colour;
genColour(colour);
for (int j = 0; j < mNumBillboardElements; ++j)
{
if (j == 0)
{
mBillboardChain->setChainElement(j,
Ogre::EffectBillboardChainElement(
Ogre::Vector3::ZERO,
mWidth,
0.0f,
colour)
);
}
else if ( j == (mNumBillboardElements-1) )
{
mBillboardChain->setChainElement(j,
Ogre::EffectBillboardChainElement(
mDestPos - originPos,
mWidth,
1.0f,
colour)
);
}
else
{
float interpolateValue = (float)j / (float)mNumBillboardElements;
Ogre::Vector3 pos = (mDestPos - originPos) * interpolateValue;
pos.x += Ogre::Math::RangeRandom(mNoiseXMin, mNoiseXMax);
pos.y += Ogre::Math::RangeRandom(mNoiseYMin, mNoiseYMax);
pos.z += Ogre::Math::RangeRandom(mNoiseZMin, mNoiseZMax);
mBillboardChain->setChainElement(j,
Ogre::EffectBillboardChainElement(
pos,
mWidth,
interpolateValue,
colour)
);
}
}
mBillboardChain->updateBoundingBox();
// 数据已准备好，可以进行渲染了
mBillboardChain->isInitData(true);
}
mCurrentFrequencyTime = 0.0f;
}
}
