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libs-gsweb/GSWeb.framework/GSWGeometricRegion.m
Manuel Guesdon a0b34ee1ee Initial revision 
git-svn-id: svn+ssh://svn.gna.org/svn/gnustep/libs/gsweb/trunk@5815 72102866-910b-0410-8b05-ffd578937521
2000-01-22 12:49:49 +00:00

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29 KiB
Objective-C
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/* GSWGeometricRegion.m - GSWeb: Class GSWRequest
Copyright (C) 1999 Free Software Foundation, Inc.
Written by: Manuel Guesdon <mguesdon@sbuilders.com>
Date: Sept 1999
This file is part of the GNUstep Web Library.
This library is free software; you can redistribute it and/or
modify it under the terms of the GNU Library General Public
License as published by the Free Software Foundation; either
version 2 of the License, or (at your option) any later version.
This library is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
Library General Public License for more details.
You should have received a copy of the GNU Library General Public
License along with this library; if not, write to the Free
Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
*/
static char rcsId[] = "$Id$";
#include <gsweb/GSWeb.framework/GSWeb.h>
#include <math.h>
//--------------------------------------------------------------------
double rad2deg(double rad)
{
double _pi=acos(-1);
double _deg=rad*180/_pi;
return _deg;
};
//--------------------------------------------------------------------
double deg2rad(double deg)
{
double _pi=acos(-1);
double _rad=deg*_pi/180;
return _rad;
};
//--------------------------------------------------------------------
float distanceBetweenPoints(NSPoint pt1, NSPoint pt2)
{
return sqrt(pow(pt2.x-pt1.x,2)+pow(pt2.y-pt1.y,2));
};
//--------------------------------------------------------------------
BOOL isOnSegment(NSPoint m,NSPoint a,NSPoint b)
{
BOOL _isOnSegment=(((m.x-a.x)*(b.y-a.y)-(m.y-a.y)*(b.x-a.x))==0);
if (_isOnSegment)
{
NSPoint a1=NSMakePoint(min(a.x,b.x),min(a.y,b.y));
NSPoint b1=NSMakePoint(max(a.x,b.x),max(a.y,b.y));
_isOnSegment=m.x>=a1.x && m.x<=b1.x && m.y>=a1.y && m.y<=b1.y;
};
return _isOnSegment;
};
//--------------------------------------------------------------------
// Test on UP direction
BOOL canBeOnSegment(NSPoint m,NSPoint a,NSPoint b)
{
BOOL _canBeOnSegment=YES;
float y=0;
if (a.x==b.x)
{
if (m.x==a.x)
y=max(a.y,b.y);
else
_canBeOnSegment=NO;
}
else
{
y=(float)(a.y*(b.x-a.x)-(b.y-a.y)*(a.x+m.x));
y/=((float)(a.x-b.x));
};
if (_canBeOnSegment)
_canBeOnSegment=m.y<=y;
return _canBeOnSegment;
};
//====================================================================
@implementation GSWGeometricRegion
//--------------------------------------------------------------------
+(NSArray*)geometricRegionsWithFile:(NSString*)fileName_
{
NSArray* _regions=nil;
NSString* _string=[NSString stringWithContentsOfFile:fileName_];
if (!_string)
{
ExceptionRaise(@"GSWGeometricRegion: Can't open File '%@'",
fileName_);
}
else
_regions=[self geometricRegionsWithString:_string];
return _regions;
}
//--------------------------------------------------------------------
+(NSArray*)geometricRegionsWithString:(NSString*)string_
{
NSMutableArray* _regions=[NSMutableArray array];
NSArray* _regionsStrings=nil;
NSString* _shapeType=nil;
NSString* _userDefinedString=nil;
NSString* _shape=nil;
int _x=0;
int _y=0;
int i=0;
int _regionsCount=0;
GSWGeometricRegion* _region=nil;
string_=[string_ stringByReplacingString:@"\r\n"
withString:@"\n"];
_regionsStrings=[string_ componentsSeparatedByString:@"\n"];
_regionsCount=[_regionsStrings count];
for(i=0;i<_regionsCount;i++)
{
NSString* _regionString=[_regionsStrings objectAtIndex:i];
NSScanner* _scanner=[NSScanner scannerWithString:_shape];
if ([_scanner scanUpToString:@" "
intoString:&_shapeType])
{
if ([_scanner scanUpToString:@" "
intoString:&_userDefinedString])
{
NSMutableArray* _coords=[NSMutableArray array];
while (![_scanner isAtEnd])
{
if ([_scanner scanInt:&_x]
&& [_scanner scanString:@"," intoString:NULL])
{
if ([_scanner scanInt:&_y])
{
[_coords addObject:[NSValue valueWithPoint:NSMakePoint(_x,_y)]];
}
else
{
ExceptionRaise(@"GSWGeometricRegion: Can't parse an y coord in line %@",
_regionString);
};
}
else
{
ExceptionRaise(@"GSWGeometricRegion: Can't parse an x coord in line %@",
_regionString);
};
};
_region=[self regionWithShape:_shapeType
coordinates:_coords
userDefinedString:_userDefinedString];
if (_region)
{
[_regions addObject:_region];
}
else
{
ExceptionRaise(@"GSWGeometricRegion: Can't make region '%@' whith userDefinedString %@ and coords %@",
_shapeType,
_userDefinedString,
_coords);
};
}
else
{
ExceptionRaise(@"GSWGeometricRegion: Can't parse userDefinedString in line %@",
_regionString);
};
}
else
{
ExceptionRaise(@"GSWGeometricRegion: Can't parse shapeType in line %@",
_regionString);
};
};
return [NSArray arrayWithArray:_regions];
};
//--------------------------------------------------------------------
+(GSWGeometricRegion*)regionWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
{
return [self regionWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:nil];
};
//--------------------------------------------------------------------
+(GSWGeometricRegion*)regionWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
GSWGeometricRegion* _region=nil;
if ([shape_ isEqualToString:@"rect"])
{
_region=[[[GSWRectangularRegion alloc]initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]autorelease];
}
else if ([shape_ isEqualToString:@"circle"])
{
_region=[[[GSWCircularRegion alloc]initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]autorelease];
}
else if ([shape_ isEqualToString:@"poly"])
{
_region=[[[GSWPolygonRegion alloc]initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]autorelease];
}
else if ([shape_ isEqualToString:@"ellipse"])
{
_region=[[[GSWEllipseRegion alloc]initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]autorelease];
}
else if ([shape_ isEqualToString:@"arc"])
{
_region=[[[GSWArcRegion alloc]initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]autorelease];
}
else
{
ExceptionRaise(@"GSWGeometricRegion bad shape %@ (userDefinedString = %@)",
shape_,
userDefinedString_);
};
return _region;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
coordinates:coords
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_;
{
if ((self=[super init]))
{
ASSIGN(userDefinedString,userDefinedString_);
ASSIGN(userDefinedValue,userDefinedValue_);
};
return self;
};
//--------------------------------------------------------------------
-(void)dealloc
{
DESTROY(userDefinedString);
DESTROY(userDefinedValue);
[super dealloc];
};
//--------------------------------------------------------------------
-(id)copyWithZone:(NSZone*)zone_
{
GSWGeometricRegion* clone = nil;
LOGObjectFnStart();
clone=[[isa allocWithZone:zone_] init];
if (clone)
{
ASSIGN(clone->userDefinedString,userDefinedString);
};
LOGObjectFnStop();
return clone;
};
//--------------------------------------------------------------------
-(NSString*)description
{
return [NSString stringWithFormat:@"<%s %p - userDefinedString %@ userDefinedValue %@>",
object_get_class_name(self),
(void*)self,
userDefinedString,
userDefinedValue];
};
//--------------------------------------------------------------------
-(NSString*)userDefinedString
{
return userDefinedString;
};
//--------------------------------------------------------------------
-(id)userDefinedValue
{
return userDefinedValue;
};
//--------------------------------------------------------------------
-(BOOL)hitTest:(NSPoint*)point_
{
if (point_)
return [self hitTestX:(unsigned int)point_->x
y:(unsigned int)point_->y];
else
return NO;
};
//--------------------------------------------------------------------
-(BOOL)hitTestX:(unsigned int)x_
y:(unsigned int)y_
{
[self subclassResponsibility: _cmd];
return NO;
};
//--------------------------------------------------------------------
+(GSWGeometricRegion*)hitTestX:(int)x_
y:(int)y_
inRegions:(NSArray*)regions_
{
GSWGeometricRegion* _regionFound=nil;
int i=0;
int _count=[regions_ count];
GSWGeometricRegion* _region=nil;
for(i=0;!_regionFound && i<_count;i++)
{
_region=[regions_ objectAtIndex:i];
if ([_region hitTestX:x_
y:y_])
{
_regionFound=_region;
};
};
NSDebugMLLog(@"low",@"_regionFound=%@",_regionFound);
return _regionFound;
};
@end
//====================================================================
@implementation GSWArcRegion : GSWGeometricRegion
//--------------------------------------------------------------------
+(id)arcRegionWithShape:(NSString*)shape_
center:(NSPoint)center_
size:(NSSize)size_
start:(int)start_
stop:(int)stop_
userDefinedString:(NSString*)userDefinedString_
{
return [self arcRegionWithShape:shape_
center:center_
size:size_
start:start_
stop:stop_
userDefinedString:userDefinedString_
userDefinedValue:nil];
};
//--------------------------------------------------------------------
+(id)arcRegionWithShape:(NSString*)shape_
center:(NSPoint)center_
size:(NSSize)size_
start:(int)start_
stop:(int)stop_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
return [[[self alloc]initWithShape:shape_
center:center_
size:size_
start:start_
stop:stop_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_] autorelease];
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
if ([coords_ count]!=3)
{
ExceptionRaise(@"GSWArcRegion",
@"GSWArcRegion bad number of coordinates (center x,center y width,height start angle,stop angle):%@ [userDefinedString = %@]",
coords_,
userDefinedString_);
}
else
{
if ((self=[super initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]))
{
NSPoint _startStop=[[coords_ objectAtIndex:2] pointValue];
NSPoint _size=[[coords_ objectAtIndex:1] pointValue];
center=[[coords_ objectAtIndex:0] pointValue];
size=NSMakeSize(_size.x,_size.y);
start=min(_startStop.x,_startStop.y);
stop=max(_startStop.x,_startStop.y);
};
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
center:(NSPoint)center_
size:(NSSize)size_
start:(int)start_
stop:(int)stop_
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
center:center_
size:size_
start:start_
stop:stop_
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
center:(NSPoint)center_
size:(NSSize)size_
start:(int)start_
stop:(int)stop_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
if ((self=[super initWithShape:shape_
coordinates:nil
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]))
{
center=center_;
size=size_;
start=start_;
stop=stop_;
};
return self;
};
//--------------------------------------------------------------------
-(id)copyWithZone:(NSZone*)zone_
{
GSWArcRegion* clone = nil;
LOGObjectFnStart();
clone = [super copyWithZone:zone_];
if (clone)
{
clone->center=center;
clone->size=size;
clone->start=start;
clone->stop=stop;
};
LOGObjectFnStop();
return clone;
};
//--------------------------------------------------------------------
-(NSString*)description
{
return [NSString stringWithFormat:@"<%s %p - userDefinedString %@ userDefinedValue %@ center %@ size %@ start %d stop %d>",
object_get_class_name(self),
(void*)self,
userDefinedString,
userDefinedValue,
NSStringFromPoint(center),
NSStringFromSize(size),
start,
stop];
};
//--------------------------------------------------------------------
-(BOOL)hitTestX:(unsigned int)x_
y:(unsigned int)y_
{
BOOL _hitOk=NO;
NSPoint _test=NSMakePoint(x_,y_);
LOGObjectFnStart();
NSDebugMLLog(@"low",@"self=%@\nx=%u y=%u",self,x_,y_);
if (size.width==0)
_hitOk=isOnSegment(_test,
NSMakePoint(center.x,center.x-size.height/2),
NSMakePoint(center.x,center.x+size.height/2));
else if (size.height==0)
_hitOk=isOnSegment(_test,
NSMakePoint(center.x-size.width/2,center.y),
NSMakePoint(center.x+size.width/2,center.y));
else
{
float _cosWith=(x_-center.x);
NSDebugMLLog(@"low",@"_cosWith=%f",(double)_cosWith);
if (_cosWith>=-size.width/2 && _cosWith<=size.width/2)
{
float _sinHeight=(y_-center.y);
NSDebugMLLog(@"low",@"_sinHeight=%f",(double)_sinHeight);
if (_sinHeight>=-size.height/2 && _sinHeight<=size.height/2)
{
double _pi=acos(-1);
float _distance=distanceBetweenPoints(center,_test);
float _cos=_cosWith/_distance;
float _sin=_sinHeight/_distance;
float _cosAngleRad=acos(_cos);
float _sinAngleRad=asin(_sin);
float _angleRad=((_sinAngleRad<0) ? (2*_pi-_cosAngleRad) : _cosAngleRad);
float _angleDeg=rad2deg(_angleRad);
NSDebugMLLog(@"low",@"_distance=%f",(double)_distance);
NSDebugMLLog(@"low",@"_cos=%f",(double)_cos);
NSDebugMLLog(@"low",@"_sin=%f",(double)_sin);
NSDebugMLLog(@"low",@"_cosAngleRad=%f",(double)_cosAngleRad);
NSDebugMLLog(@"low",@"_sinAngleRad=%f",(double)_sinAngleRad);
NSDebugMLLog(@"low",@"_angleRad=%f",(double)_angleRad);
NSDebugMLLog(@"low",@"_angleDeg=%f",(double)_angleDeg);
_hitOk=(_angleDeg>=start && _angleDeg<=stop);
};
};
};
NSDebugMLLog(@"low",@"_hitOk=%s",(_hitOk ? "YES" : "NO"));
LOGObjectFnStop();
return _hitOk;
};
@end
//====================================================================
@implementation GSWEllipseRegion : GSWArcRegion
//--------------------------------------------------------------------
+(id)ellipseRegionWithShape:(NSString*)shape_
center:(NSPoint)center_
size:(NSSize)size_
userDefinedString:(NSString*)userDefinedString_
{
return [self ellipseRegionWithShape:shape_
center:center_
size:size_
userDefinedString:userDefinedString_
userDefinedValue:nil];
};
//--------------------------------------------------------------------
+(id)ellipseRegionWithShape:(NSString*)shape_
center:(NSPoint)center_
size:(NSSize)size_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
return [[[self alloc]initWithShape:shape_
center:center_
size:size_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_] autorelease];
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
if ([coords_ count]!=2)
{
ExceptionRaise(@"GSWEllipseRegion",
@"GSWEllipseRegion bad number of coordinates (center x,center y width,height):%@ [userDefinedString = %@]",
coords_,
userDefinedString_ );
}
else
{
NSPoint _center=[[coords_ objectAtIndex:0] pointValue];
NSPoint _tmpSize=[[coords_ objectAtIndex:1] pointValue];
NSSize _size=NSMakeSize(_tmpSize.x,_tmpSize.y);
if ((self=[self initWithShape:shape_
center:_center
size:_size
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]))
{
};
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
center:(NSPoint)center_
size:(NSSize)size_
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
center:center_
size:size_
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
center:(NSPoint)center_
size:(NSSize)size_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
if ((self=[super initWithShape:shape_
center:center_
size:size_
start:0
stop:360
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]))
{
};
return self;
};
//--------------------------------------------------------------------
-(NSString*)description
{
return [super description];
};
@end
//====================================================================
@implementation GSWCircularRegion
//--------------------------------------------------------------------
+(id)circularRegionWithShape:(NSString*)shape_
center:(NSPoint)center_
diameter:(int)diameter_
userDefinedString:(NSString*)userDefinedString_
{
return [self circularRegionWithShape:shape_
center:center_
diameter:diameter_
userDefinedString:userDefinedString_
userDefinedValue:nil];
};
//--------------------------------------------------------------------
+(id)circularRegionWithShape:(NSString*)shape_
center:(NSPoint)center_
diameter:(int)diameter_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
return [[[self alloc]initWithShape:shape_
center:center_
diameter:diameter_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_] autorelease];
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
if ([coords_ count]!=2)
{
ExceptionRaise(@"GSWCircularRegion",
@"GSWCircularRegion bad number of coordinates (only center and edgePoint are possible):%@ [userDefinedString = %@]",
coords_,
userDefinedString_ );
}
else
{
NSPoint _center=[[coords_ objectAtIndex:0] pointValue];
NSPoint _edgePoint=[[coords_ objectAtIndex:1] pointValue];
int rayon=(int)distanceBetweenPoints(_center,_edgePoint);
if ((self=[self initWithShape:shape_
center:_center
diameter:rayon*2
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]))
{
};
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
center:(NSPoint)center_
diameter:(int)diameter_
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
center:center_
diameter:diameter_
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
center:(NSPoint)center_
diameter:(int)diameter_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
if ((self=[super initWithShape:shape_
center:center_
size:NSMakeSize(diameter_,diameter_)
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]))
{
};
return self;
};
//--------------------------------------------------------------------
-(NSString*)description
{
return [super description];
};
@end
//====================================================================
@implementation GSWRectangularRegion
//--------------------------------------------------------------------
+(id)rectangularRegionWithShape:(NSString*)shape_
rect:(NSRect)rect_
userDefinedString:(NSString*)userDefinedString_
{
return [self rectangularRegionWithShape:shape_
rect:rect_
userDefinedString:userDefinedString_
userDefinedValue:nil];
};
//--------------------------------------------------------------------
+(id)rectangularRegionWithShape:(NSString*)shape_
rect:(NSRect)rect_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
return [[[self alloc]initWithShape:shape_
rect:rect_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_] autorelease];
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
if ([coords_ count]!=2)
{
ExceptionRaise(@"GSWRectangularRegion",
@"GSWRectangularRegion bad number of coordinates (only x1,y1 and x2,y2 allowed):%@ [userDefinedString = %@]",
coords_,
userDefinedString_ );
}
else
{
NSPoint pt0=[[coords_ objectAtIndex:0] pointValue];
NSPoint pt1=[[coords_ objectAtIndex:1] pointValue];
NSRect _rect=NSMakeRect(pt0.x,pt0.y,pt1.x-pt0.x,pt1.y-pt0.y);
if ((self=[self initWithShape:shape_
rect:_rect
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]))
{
};
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
rect:(NSRect)rect_
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
rect:rect_
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
rect:(NSRect)rect_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
if ((self=[super initWithShape:shape_
coordinates:nil
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]))
{
rect=rect_;
};
return self;
};
//--------------------------------------------------------------------
-(NSString*)description
{
return [NSString stringWithFormat:@"<%s %p - userDefinedString %@ userDefinedValue %@ rect %@>",
object_get_class_name(self),
(void*)self,
userDefinedString,
userDefinedValue,
NSStringFromRect(rect)];
};
//--------------------------------------------------------------------
-(BOOL)hitTestX:(unsigned int)x_
y:(unsigned int)y_
{
BOOL _hitOk=NO;
LOGObjectFnStart();
NSDebugMLLog(@"low",@"self=%@\nx=%u y=%u",self,x_,y_);
_hitOk=NSPointInRect(NSMakePoint(x_,y_),rect);
LOGObjectFnStop();
return _hitOk;
};
@end
//====================================================================
@implementation GSWPolygonRegion
//--------------------------------------------------------------------
+(id)polygonRegionWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
{
return [self polygonRegionWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:nil];
};
//--------------------------------------------------------------------
+(id)polygonRegionWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
return [[[self alloc]initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_] autorelease];
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
{
if ((self=[self initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:nil]))
{
};
return self;
};
//--------------------------------------------------------------------
-(id)initWithShape:(NSString*)shape_
coordinates:(NSArray*)coords_
userDefinedString:(NSString*)userDefinedString_
userDefinedValue:(id)userDefinedValue_
{
if ((self=[super initWithShape:shape_
coordinates:coords_
userDefinedString:userDefinedString_
userDefinedValue:userDefinedValue_]))
{
if ([coords_ count]==0)
{
ExceptionRaise(@"GSWPolygonRegion",
@"GSWPolygonRegion bad number of coordinates (at least 1 point needed):%@ [userDefinedString = %@]",
coords_,
userDefinedString_ );
}
else
{
ASSIGN(points,coords_);
};
};
return self;
};
//--------------------------------------------------------------------
-(void)dealloc
{
DESTROY(points);
};
//--------------------------------------------------------------------
-(NSString*)description
{
return [NSString stringWithFormat:@"<%s %p - userDefinedString %@ userDefinedValue %@ points %@>",
object_get_class_name(self),
(void*)self,
userDefinedString,
userDefinedValue,
points];
};
//--------------------------------------------------------------------
-(BOOL)hitTestX:(unsigned int)x_
y:(unsigned int)y_
{
BOOL _hitOk=NO;
int i=0;
int _count=[points count];
NSPoint _lastPoint;
NSPoint _currentPoint;
NSPoint _test=NSMakePoint(x_,y_);
if (_count==1)
{
_currentPoint=[[points objectAtIndex:0] pointValue];
_hitOk=(x_==_currentPoint.x && y_==_currentPoint.y);
}
else if (_count==2)
{
_lastPoint=[[points objectAtIndex:0] pointValue];
_currentPoint=[[points objectAtIndex:1] pointValue];
_hitOk=isOnSegment(_test,_lastPoint,_currentPoint);
}
else
{
int _crossCount=0;
// A point is in the polygon if the line segment starting from the point
// and going anywhere meete an odd number of polygon segment !
_lastPoint=[[points objectAtIndex:0] pointValue];
for(i=1;i<=_count;i++)
{
_currentPoint=[[points objectAtIndex:(i%_count)] pointValue];
// Test on UP direction
if (canBeOnSegment(_test,_lastPoint,_currentPoint))
_crossCount++;
_lastPoint=_currentPoint;
};
_hitOk=((_crossCount%2)!=0);
};
return _hitOk;
};
@end
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