void LoadTexture()
{
static GLubyte imageData[64][64][3];
for(int i=0;i<64;i++){
for(int j=0;j<64;j++){
float x= 255*fastsqrt((i-32)*(i-32)+(j-32)*(j-32))/32;
// several formulas have been tested, the better is the "hyperbole"
//x= 200*(sin(x/56)/(x/56)+0.23);
//x= 35000*(1/(x+100)-0.0025);
x=15000*(1/(x+50)-0.003);
if(x<0)
x=0;
imageData[i][j][0]= (GLubyte)x;
imageData[i][j][1]= (GLubyte)x;
imageData[i][j][2]= (GLubyte)x;
}
}
// Create Texture
glGenTextures(1, &texture[0]);
glBindTexture(GL_TEXTURE_2D, texture[0]); // 2d texture (x and y size)
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MAG_FILTER,GL_LINEAR); // scale linearly when image bigger than texture
glTexParameteri(GL_TEXTURE_2D,GL_TEXTURE_MIN_FILTER,GL_LINEAR); // scale linearly when image smalled than texture
// 2d texture, level of detail 0 (normal), 3 components (red, green, blue), x size from image, y size from image,
// border 0 (normal), rgb color data, unsigned byte data, and finally the data itself.
glTexImage2D(GL_TEXTURE_2D, 0, 3, 64, 64, 0, GL_RGB, GL_UNSIGNED_BYTE,&imageData[0][0][0] );
}
CandleEffect::CandleEffect(EyeCandy* _base, bool* _dead, Vec3* _pos,
const color_t _hue_adjust, const color_t _saturation_adjust,
const float _scale, const Uint16 _LOD)
{
if (EC_DEBUG)
std::cout << "CandleEffect (" << this << ") created." << std::endl;
base = _base;
dead = _dead, pos = _pos;
hue_adjust = _hue_adjust;
saturation_adjust = _saturation_adjust;
scale = _scale;
sqrt_scale = fastsqrt(scale);
LOD = base->last_forced_LOD;
desired_LOD = _LOD;
bounds = NULL;
mover = new SmokeMover(this, sqrt_scale);
spawner = new FilledSphereSpawner(0.015 * sqrt_scale);
}
void beatdetector::learnbeat(float data[3][256])
{
filterpower=0;
for(int i = 0; i < NUM_BANDS; i++)
{
float y0, y1;
uint16_t f = i<128 ? (i-128) :0;
f = f*f/100;
f = f*f/30;
y0 = data[0][i];
y1 = data[1][i];
y0*=y0;
y1*=y1;
y0 = (int)fastsqrt(y0+y1);
filter[i] = (filter[i]*48 + f + ((y0)-filter2[i]))/50 ;
filterpower+=filter[i];
}
}
bool CloudParticle::idle(const Uint64 delta_t)
{
if (effect->recall)
return false;
if (base->particles.size() > 1)
{
if ((pos - base->center).magnitude_squared()
> MAX_DRAW_DISTANCE_SQUARED)
{
//Find everything that sees this as a neighbor and delete the references to this.
for (std::vector<CloudParticle*>::iterator iter =
incoming_neighbors.begin(); iter
!= incoming_neighbors.end(); iter++)
(*iter)->remove_neighbor(this);
for (std::vector<CloudParticle*>::iterator iter =
neighbors.begin(); iter != neighbors.end(); iter++)
(*iter)->remove_incoming_neighbor(this);
return false;
}
}
Vec3 velocity_shift;
velocity_shift.randomize();
velocity_shift.y /= 3;
velocity_shift.normalize(0.00002 * fastsqrt(delta_t));
velocity += velocity_shift;
const coord_t magnitude = velocity.magnitude();
if (magnitude > 0.15)
velocity /= (magnitude / 0.15);
if (fabs(velocity.y) > 0.1)
velocity.y *= math_cache.powf_05_close(delta_t / 300000.0);
if (pos.y - size / 40 < min_height)
velocity.y += delta_t / 500000.0;
if (pos.y + size / 40 > max_height)
velocity.y -= delta_t / 2500000.0;
if (effect->particles.size() <= 1)
return true;
if (!neighbors.size())
{
std::map<Particle*, bool>::iterator next_iter;
int offset;
CloudParticle* next;
while (true)
{
next_iter = effect->particles.begin();
offset = randint((int)effect->particles.size());
for (int j = 0; j < offset; j++)
next_iter++;
next = (CloudParticle*)next_iter->first;
if (next != this)
break;
}
neighbors.push_back(next);
next->add_incoming_neighbor(this);
}
// Adjust our neighbors -- try a few points to see if they're closer.
// First, create the map
CloudEffect* eff = (CloudEffect*)effect;
std::map<coord_t, CloudParticle*> neighbors_map;
for (int i = 0; i < (int)neighbors.size(); i++)
{
const coord_t distsquared = (neighbors[i]->pos - pos).magnitude_squared();
neighbors_map[distsquared] = neighbors[i];
}
// Now, try to replace elements.
coord_t maxdist = neighbors_map.rbegin()->first;
for (int i = 0; (i < 1) || ((neighbors_map.size() < 20) && (i < 40)); i++)
{
std::map<Particle*, bool>::iterator iter;
int offset;
CloudParticle* neighbor;
while (true)
{
iter = eff->particles.begin();
offset = randint((int)eff->particles.size());
for (int j = 0; j < offset; j++)
iter++;
neighbor = (CloudParticle*)iter->first;
if (neighbor != this)
break;
}
const coord_t distsquared = (neighbor->pos - pos).magnitude_squared();
if (neighbors_map.size() >= 20)
{
if (distsquared > maxdist)
continue;
if (neighbors_map.count(distsquared))
continue;
}
if (neighbors_map.size() >= 20)
{
std::map<coord_t, CloudParticle*>::iterator iter =
neighbors_map.begin();
for (int j = 0; j < (int)neighbors_map.size() - 1; j++)
iter++;
neighbors_map.erase(iter);
}
neighbors_map[distsquared] = neighbor;
maxdist = neighbors_map.rbegin()->first;
}
// Set our color based on how deep into the cloud we are, based on our neighbors. Also rebuild the neighbors vector.
coord_t distsquaredsum = 0;
Vec3 centerpoint(0.0, 0.0, 0.0);
for (std::vector<CloudParticle*>::iterator iter = neighbors.begin(); iter
!= neighbors.end(); iter++)
(*iter)->remove_incoming_neighbor(this);
neighbors.clear();
for (std::map<coord_t, CloudParticle*>::iterator iter =
neighbors_map.begin(); iter != neighbors_map.end(); iter++)
{
distsquaredsum += iter->first;
centerpoint += iter->second->pos; //Should really be (pos - iter->second->pos); will correct this below for speed.
neighbors.push_back(iter->second);
iter->second->add_incoming_neighbor(this);
}
centerpoint = (pos * 20) - centerpoint;
Vec3 new_normal = centerpoint;
const coord_t magnitude_squared = centerpoint.magnitude_squared();
const coord_t scale= fastsqrt(magnitude_squared);
new_normal /= scale; // Normalize
// light_t new_brightness = 1.0 - (25.0 / (scale + 50.0));
// new_normal.x = (new_normal.x < 0 ? -1 : 1) * math_cache.powf_0_1_rough_close(fabs(new_normal.x), new_brightness * 2.0 - 1.0);
// new_normal.y = (new_normal.y < 0 ? -1 : 1) * math_cache.powf_0_1_rough_close(fabs(new_normal.y), new_brightness * 2.0 - 1.0);
// new_normal.z = (new_normal.z < 0 ? -1 : 1) * math_cache.powf_0_1_rough_close(fabs(new_normal.z), new_brightness * 2.0 - 1.0);
const percent_t change_rate = math_cache.powf_05_close(delta_t
/ 2000000.0);
normal = normal * change_rate + new_normal * (1.0 - change_rate);
normal.normalize();
// color[0] = color[0] * change_rate + new_brightness * (1.0 - change_rate);
// color[1] = color[0];
// color[2] = color[0];
// std::cout << " " << centerpoint << std::endl;
// std::cout << " " << normal << std::endl;
// std::cout << " " << brightness << std::endl;
return true;
}
