int FindIfInside(Point polygon[],int n,Point p){
Point extreme={inf,p.y};
int i=0;
int next;
int count=0;
do{
next=(i+1)%n;
if(FindIfIntersect(polygon[i],polygon[next],p,extreme )){
if(FindOrient(polygon[i],polygon[next],p)==0){
//printf("\nHere for i : %d next : %d",i,next);
return IsOnLine(polygon[i],p,polygon[next]);
}
count++;
}
i=next;
}while(i!=0);
//printf("\nCount is : %d",count);
return count&1;
}
double Dist2(const Line2d & g, const Line2d & h )
{
double dd = 0.0, d1,d2,d3,d4;
Point2d cp = CrossPoint(g,h);
if ( Parallel(g,h) || !IsOnLine(g,cp) || !IsOnLine(h,cp) )
{
d1 = Dist2(g.P1(),h.P1());
d2 = Dist2(g.P1(),h.P2());
d3 = Dist2(g.P2(),h.P1());
d4 = Dist2(g.P2(),h.P2());
if (d1<d2) d2 = d1;
if (d3<d4) d4 = d3;
dd = ( d2 < d4 ) ? d2 : d4;
}
return dd;
}
int FindIfIntersect(Point p1,Point q1,Point p2,Point q2){
int o1=FindOrient(p1,q1,p2);
int o2=FindOrient(p1,q1,q2);
int o3=FindOrient(p2,q2,p1);
int o4=FindOrient(p2,q2,q1);
if(o1!=o2 && o3!=o4){
return 1;
}
if(o1==0 && IsOnLine(p1,p2,q1)){
return 1;
}
if(o2==0 && IsOnLine(p1,q2,q1)){
return 1;
}
if(o3==0 && IsOnLine(p2,p1,q2)){
return 1;
}
if(o4==0 && IsOnLine(p2,q1,q2)){
return 1;
}
return 0;
}
int Polygon2d :: IsOn (const Point2d & p) const
{
int i;
for (i = 1; i <= points.Size(); i++)
{
const Point2d & p1 = points.Get(i);
const Point2d & p2 = points.Get(i%points.Size()+1);
if (IsOnLine (Line2d(p1, p2), p)) return 1;
}
return 0;
/*
CURSOR c;
Point2d * p1, * p2;
p2 = points[points.Last()];
for (c = points.First(); c != points.Head(); c++)
{
p1 = p2;
p2 = points[c];
if (IsOnLine (Line2d(*p1, *p2), p)) return 1;
}
return 0;
*/
}
void ExportMixerPanel::OnMouseEvent(wxMouseEvent & event)
{
if( event.ButtonDown() )
{
CaptureMouse();
bool reset = true;
//check tracks
for( int i = 0; i < mMixerSpec->GetNumTracks(); i++ )
if( mTrackRects[ i ].Inside( event.m_x, event.m_y ) )
{
reset = false;
if( mSelectedTrack == i )
mSelectedTrack = -1;
else
{
mSelectedTrack = i;
if( mSelectedChannel != -1 )
mMixerSpec->mMap[ mSelectedTrack ][ mSelectedChannel ] =
!mMixerSpec->mMap[ mSelectedTrack ][ mSelectedChannel ];
}
goto found;
}
//check channels
for( int i = 0; i < mMixerSpec->GetNumChannels(); i++ )
if( mChannelRects[ i ].Inside( event.m_x, event.m_y ) )
{
reset = false;
if( mSelectedChannel == i )
mSelectedChannel = -1;
else
{
mSelectedChannel = i;
if( mSelectedTrack != -1 )
mMixerSpec->mMap[ mSelectedTrack ][ mSelectedChannel ] =
!mMixerSpec->mMap[ mSelectedTrack ][ mSelectedChannel ];
}
goto found;
}
//check links
for( int i = 0; i < mMixerSpec->GetNumTracks(); i++ )
for( int j = 0; j < mMixerSpec->GetNumChannels(); j++ )
if( mMixerSpec->mMap[ i ][ j ] && IsOnLine( wxPoint( event.m_x,
event.m_y ), wxPoint( mTrackRects[ i ].x + mBoxWidth,
mTrackRects[ i ].y + mTrackHeight / 2 ),
wxPoint( mChannelRects[ j ].x, mChannelRects[ j ].y +
mChannelHeight / 2 ) ) )
mMixerSpec->mMap[ i ][ j ] = false;
found:
if( reset )
mSelectedTrack = mSelectedChannel = -1;
Refresh( false );
}
if( event.ButtonUp() )
{
if( HasCapture() )
ReleaseMouse();
}
}
int PTRIANGLE2D :: IsOn (const Point2d & p) const
{
return IsOnLine (Line2d (*p1, *p2), p) ||
IsOnLine (Line2d (*p1, *p3), p) ||
IsOnLine (Line2d (*p2, *p3), p);
}
int TRIANGLE2D :: IsOn (const Point2d & p) const
{
return IsOnLine (Line2d (p1, p2), p) ||
IsOnLine (Line2d (p1, p3), p) ||
IsOnLine (Line2d (p2, p3), p);
}
