void Voronoi::InsertParabola(Vec2d * p){
if(!root){root = new VParabola(p); return;}
if(root->isLeaf && root->site->y - p->y < 1){ // degenerovaný pripad - obì spodní místa ve stejné výce
Vec2d * fp = root->site;
root->isLeaf = false;
root->SetLeft( new VParabola(fp) );
root->SetRight(new VParabola(p) );
//Vec2d * s = new Vec2d( (p->x + fp->x)/2, height ); // zaèátek hrany uprostøed míst
Vec2d * s = new Vec2d(); s->set( (p->x + fp->x)/2, height ); // zaèátek hrany uprostøed míst
points.push_back(s);
if(p->x > fp->x) root->edge = new VEdge(s, fp, p); // rozhodnu, který vlevo, který vpravo
else root->edge = new VEdge(s, p, fp);
edges->push_back(root->edge);
return;
}
VParabola * par = GetParabolaByX(p->x);
if(par->cEvent) {
deleted.insert(par->cEvent);
par->cEvent = 0;
}
//Vec2d * start = new Vec2d(p->x, GetY(par->site, p->x));
Vec2d * start = new Vec2d(); start->set( p->x, GetY(par->site, p->x) );
points.push_back(start);
VEdge * el = new VEdge(start, par->site, p);
VEdge * er = new VEdge(start, p, par->site);
el->neighbour = er;
edges->push_back(el);
// pøestavuju strom .. vkládám novou parabolu
par->edge = er;
par->isLeaf = false;
VParabola * p0 = new VParabola(par->site);
VParabola * p1 = new VParabola(p);
VParabola * p2 = new VParabola(par->site);
par->SetRight(p2);
par->SetLeft(new VParabola());
par->Left()->edge = el;
par->Left()->SetLeft(p0);
par->Left()->SetRight(p1);
CheckCircle(p0);
CheckCircle(p2);
}
void draw() {
// draw Points
glColor3f( 0.3,0.3,0.3 );
for ( int i=0; i<n; i++ ) {
draw_Vec2d( ps[i] );
};
// draw map.points.hits
for ( int i=0; i<map.points.capacity; i++ ) {
draw_Segment2d( {-0.5+i*pixsz,-0.5}, { -0.5+i*pixsz, -0.5 + map.points.hits[i] * 3*pixsz } );
}
Vec2d pmouse;
pmouse.set( (mouseX-WIDTH_HALF)*pixsz, (HEIGHT_HALF-mouseY)*( pixsz*ASPECT_RATIO ) );
int ix = map.getIx( pmouse.x );
int iy = map.getIy( pmouse.y );
int index = map.getBoxIndex( ix, iy );
//colorHash( map.getBoxIndex( ix, iy ) );
glColor3f( 0.9,0.7,0.8 );
draw_Rect2d( { map.getX(ix), map.getY(iy) }, { map.getX(ix+1), map.getY(iy+1) } );
//printf( " rect X Y %i %i %f %f \n", ix, iy, map.getX(ix), map.getY(iy) );
//printf( " mouse X Y %i %i \n", mouseX, mouseY );
paint_Vec2d( pmouse, 0.01 );
int nloaded = map.loadPointsIn( pmouse );
for ( int i=0; i<nloaded; i++ ) {
int ii = map.tempi[i];
Vec2d* pp = map.points.store[ ii ];
paint_Vec2d( *pp, 0.0025 );
};
if( index != lastIndex ) printf( " ix iy index %i %i %i iters %i \n", ix, iy, index, map.points.DEBUG_counter );
lastIndex = index;
};
void Voronoi::CheckCircle(VParabola * b){
VParabola * lp = VParabola::GetLeftParent (b);
VParabola * rp = VParabola::GetRightParent(b);
VParabola * a = VParabola::GetLeftChild (lp);
VParabola * c = VParabola::GetRightChild(rp);
if(!a || !c || a->site == c->site) return;
Vec2d * s = 0;
s = GetEdgeIntersection(lp->edge, rp->edge);
if(s == 0) return;
double dx = a->site->x - s->x;
double dy = a->site->y - s->y;
double d = std::sqrt( (dx * dx) + (dy * dy) );
if(s->y - d >= ly) { return;}
Vec2d * newv = new Vec2d(); newv->set( s->x, s->y - d );
VEvent * e = new VEvent( newv, false);
//VEvent * e = new VEvent( new Vec2d(s->x, s->y - d), false);
points.push_back(e->point);
b->cEvent = e;
e->arch = b;
queue.push(e);
}
void NBodyWorldApp::pickParticle( Particle2D*& picked ){
Particle2D* screenObjects[256];
// mouse picking
double rmax = 2.0d;
double r2max = rmax*rmax;
Vec2d vmouse;
vmouse.set( mouse_begin_x, mouse_begin_y );
UINT mfound = world.map.getObjectsInRect( (float)(vmouse.x - rmax ), (float)(vmouse.y - rmax ), (float)(vmouse.x + rmax ), (float)(vmouse.y + rmax ), &(screenObjects[0]) );
//printf( "mfound %i \n", mfound );
int imin = -1;
double r2min = 1e+300;
for( int i=0; i<mfound; i++ ){
Particle2D* p = screenObjects[i];
Vec2d d;
d.set_sub( p->pos, vmouse );
double r2 = d.norm2();
if( r2 < r2max ){
if( r2 < r2min ){ r2min = r2; imin = i; }
}
//printf( " r2 %3.3f r2max %3.3f r2min %3.3f imin %i \n", r2, r2max, r2min, imin );
}
if( imin >= 0 ){
picked = screenObjects[imin];
}else{
picked = NULL;
}
//if( world.picked != NULL ) printf( " MOUSE picked (%f,%f) \n", world.picked->pos.x, world.picked->pos.y );
}
void Voronoi::FinishEdge(VParabola * n){
if(n->isLeaf) {delete n; return;}
double mx;
if(n->edge->direction->x > 0.0){ mx = std::max(width, n->edge->start->x + 10 ); }
else { mx = std::min(0.0, n->edge->start->x - 10 ); }
//Vec2d * end = new Vec2d(mx, mx * n->edge->f + n->edge->g);
Vec2d * end = new Vec2d(); end->set( mx, mx * n->edge->f + n->edge->g );
n->edge->end = end;
points.push_back(end);
FinishEdge(n->Left() );
FinishEdge(n->Right());
delete n;
}
Vec2d * Voronoi::GetEdgeIntersection(VEdge * a, VEdge * b){
double x = (b->g-a->g) / (a->f - b->f);
double y = a->f * x + a->g;
if((x - a->start->x)/a->direction->x < 0) return 0;
if((y - a->start->y)/a->direction->y < 0) return 0;
if((x - b->start->x)/b->direction->x < 0) return 0;
if((y - b->start->y)/b->direction->y < 0) return 0;
//Vec2d * p = new Vec2d(x, y);
Vec2d * p = new Vec2d(); p->set(x, y);
points.push_back(p);
return p;
}
void Voronoi::RemoveParabola(VEvent * e){
VParabola * p1 = e->arch;
VParabola * xl = VParabola::GetLeftParent(p1);
VParabola * xr = VParabola::GetRightParent(p1);
VParabola * p0 = VParabola::GetLeftChild(xl);
VParabola * p2 = VParabola::GetRightChild(xr);
if(p0 == p2) std::cout << "chyba - pravá a levá parabola má stejné ohnisko!\n";
if(p0->cEvent){ deleted.insert(p0->cEvent); p0->cEvent = 0; }
if(p2->cEvent){ deleted.insert(p2->cEvent); p2->cEvent = 0; }
//Vec2d * p = new Vec2d(e->point->x, GetY(p1->site, e->point->x));
Vec2d * p = new Vec2d(); p->set( e->point->x, GetY(p1->site, e->point->x) );
points.push_back(p);
xl->edge->end = p;
xr->edge->end = p;
VParabola * higher;
VParabola * par = p1;
while(par != root) {
par = par->parent;
if(par == xl) higher = xl;
if(par == xr) higher = xr;
}
higher->edge = new VEdge(p, p0->site, p2->site);
edges->push_back(higher->edge);
VParabola * gparent = p1->parent->parent;
if(p1->parent->Left() == p1) {
if(gparent->Left() == p1->parent) gparent->SetLeft ( p1->parent->Right() );
if(gparent->Right() == p1->parent) gparent->SetRight( p1->parent->Right() );
}else{
if(gparent->Left() == p1->parent) gparent->SetLeft ( p1->parent->Left() );
if(gparent->Right() == p1->parent) gparent->SetRight( p1->parent->Left() );
}
delete p1->parent;
delete p1;
CheckCircle(p0);
CheckCircle(p2);
}
void setup() {
// === Map2D indexing
/*
for (int i=0; i<10; i++ ){
double x = randf( -10,10 );
double y = randf( -10,10 );
short int ix = map.getIx( x );
short int iy = map.getIx( y );
unsigned int index = map.getIndex( ix, iy );
printf( " %i %f %f %i %i %i \n", i, x, y, ix, iy, index );
}
*/
// === HashMap test
/*
hashmap.init( power+1 );
printf( " n %i capacity %i \n ", n, hashmap.capacity );
for ( int i=0; i<n; i++ ){
ints[i] = rand();
hashmap.insert( &ints[i], i );
}
for ( int i=0; i<hashmap.capacity; i++ ){
if ( hashmap.store[i] != NULL ) { printf( " %i hash %i box %i \n", i, hashmap.hashs[i], hashmap.iboxs[i] ); }
else { printf( " %i NULL\n", i ); }
}
*/
// === save random points into Map2D
for ( int i=0; i<n; i++ ) {
ps[i].set( randf( -1.0,1.0 ), randf( -1.0,1.0 ) );
//colorHash( i ); draw_Vec2d( p );
//print( ps[i] );
map.insertPoint( ps[i] );
}
printf( " power %i n %i capacity %i mask %i \n ", power, n, map.points.capacity, map.points.mask );
// === Performance test
int ntest = 10000000;
long long t1,t2;
double checksum = 0;
int counter;
counter = 0;
t1 = getCPUticks();
for ( int i =0; i < ntest; i++ ) {
Vec2d p;
p.set( randf( -1.0,1.0 ), randf( -1.0,1.0 ) );
map.loadPointsIn( p );
counter += map.points.DEBUG_counter;
}
t2 = getCPUticks();
printf( " map.loadPointsIn : checksum %f ticks/op %f iter/op %f \n", checksum, (t2-t1)/(double)ntest, counter/(double)ntest );
counter = 0;
t1 = getCPUticks();
for ( int i =0; i < ntest; i++ ) {
Vec2d p;
p.set( randf( -1.0,1.0 ), randf( -1.0,1.0 ) );
map.loadPointsIn_noHash( p );
counter += map.points.DEBUG_counter;
}
t2 = getCPUticks();
printf( " map.loadPointsIn_noHash : checksum %f ticks/op %f iter/op %f \n", checksum, (t2-t1)/(double)ntest, counter/(double)ntest );
}
void TestAppTerrainCubic::draw(){
glClearColor( 1.0f, 1.0f, 1.0f, 0.0f );
glClear( GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT );
glDisable( GL_DEPTH_TEST );
// ============== project to line Convex Polygons
const int np = 7;
double yLs [np];
double yRs [np];
double ys [np];
double xs [np];
Convex2d base( np );
//base.corners[0].set( -1.0, +1.0 );
//base.corners[1].set( +1.0, -1.5 );
//base.corners[2].set( +2.0, 0.5 );
base.corners[0].set( -1.0, -1.0 );
base.corners[1].set( +1.0, -1.0 );
base.corners[2].set( +2.0, 0.0 );
base.corners[3].set( +1.0, +1.0 );
base.corners[4].set( -1.0, +1.0 );
base.corners[5].set( -1.5, +0.5 );
base.corners[6].set( -1.5, -0.5 );
glColor3f( 0.5f, 0.5f, 0.5f ); Draw2D::drawConvexPolygon( base.n, base.corners, false );
//Vec2d dir; dir.set( +1.0, 0.1 ); dir.normalize( );
double angle = M_PI * ( ( frameCount % 600 ) / 300.0 ) + 0.5;
Vec2d dir; dir.set( cos( angle ), sin( angle ) );
base.projectToLine( dir, xs, yLs, yRs );
//printArray( base.n, xs );
//printArray( base.n, yLs );
//printArray( base.n, yRs );
VecN::sub( np, yLs, yRs, ys );
PolyLinear1d pline( np, xs, ys );
//pline.n = np;
//pline.xs = xs;
//pline.ys = ys;
//double V = pline.integrate( -1000.0, 1000.0 );
double V = pline.integrate_ibounds( 0, pline.n );
double Vtarget = V*0.1;
double xhalf = pline.x_of_integral( Vtarget );
double Vhalf = pline.integrate( -1000.0, xhalf );
printf( " V %f xhalf %f Vhalf %f Vtarget %f \n", V, xhalf, Vhalf, Vtarget );
double watterline;
double moment = integrate_moment( np, xs, yLs, yRs, Vtarget, watterline );
printf( " V %f xtarget %f %f Vtarget %f %f moment %f \n", V, xhalf, watterline, Vhalf, Vtarget, moment );
pline.detach();
glColor3f( 0.2f, 0.9f, 0.2f ); Draw2D::drawLine( { xhalf, -10.0 }, { xhalf, +10.0 } );
glColor3f( 0.5f, 0.5f, 0.5f );
Draw2D::drawLine( { 0.0, -10.0 }, { 0.0, +10.0 } );
Draw2D::drawLine( {-10.0, 0.0 }, {+10.0, 0.0 } );
glColor3f( 0.9f, 0.2f, 0.2f ); Draw2D::plot( base.n, xs, yLs );
glColor3f( 0.2f, 0.2f, 0.9f ); Draw2D::plot( base.n, xs, yRs );
glColor3f( 0.0f, 0.0f, 0.0f ); Draw2D::plot( base.n, xs, ys );
// ============== Mouse Raycast Convex Polygons
/*
//printf( " mouse x,y : %i %i %f %f \n", mouseX, mouseY, mouseRight(mouseX), mouseUp(mouseY) );
Vec2d mvec;
mvec.set( mouseRight(mouseX), mouseUp(mouseY) );
//mvec.set( 0.0, 0.0 );
Draw2D::drawPointCross_d( mvec, 1.0 );
for( auto isle : isles ) {
//printf( "draw isle: %i %f %f \n ", isle->n, isle->corners[0].x, isle->corners[0].y );
if( isle->pointIn( mvec ) ){
glColor3f( 1.0f, 0.2f, 0.2f );
//printf( " mouse in isle \n " );
}else{
glColor3f( 0.2f, 0.2f, 0.2f );
}
Draw2D::drawConvexPolygon( isle->n, isle->corners, true );
//exit(0);
}
*/
// ============== Cut Convex Polygon
/*
Convex2d base( 5 );
//base.corners[0].set( -1.0, +1.0 );
//base.corners[1].set( +1.0, -1.5 );
//base.corners[2].set( +2.0, 0.5 );
base.corners[0].set( -1.0, -1.0 );
base.corners[1].set( +1.0, -1.0 );
base.corners[2].set( +2.0, 0.0 );
base.corners[3].set( +1.0, +1.0 );
base.corners[4].set( -1.0, +1.0 );
glColor3f( 0.9f, 0.9f, 0.9f ); Draw2D::drawConvexPolygon( base.n, base.corners, false );
Vec2d Acut,Bcut;
Acut.set( -1.0, -5.0 );
Bcut.set( +3.0, +5.0 );
Line2d cutline; cutline.set( Acut, Bcut );
glColor3f( 0.2f, 0.9f, 0.2f ); Draw2D::drawLine_d( Acut, Bcut );
Convex2d left;
Convex2d right;
base.cut( cutline, left, right );
glColor3f( 0.9f, 0.2f, 0.9f ); Draw2D::drawPointCross_d( left.corners[0], 0.3 );
glColor3f( 0.2f, 0.9f, 0.9f ); Draw2D::drawPointCross_d( left.corners[1], 0.3 );
glColor3f( 0.9f, 0.2f, 0.2f ); Draw2D::drawConvexPolygon( left.n, left.corners, true );
glColor3f( 0.2f, 0.2f, 0.9f ); Draw2D::drawConvexPolygon( right.n, right.corners, true );
*/
STOP = true;
};
