diff options
Diffstat (limited to 'Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m')
| -rw-r--r-- | Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m | 785 |
1 files changed, 0 insertions, 785 deletions
diff --git a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m deleted file mode 100644 index b7a3fd09..00000000 --- a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m +++ /dev/null @@ -1,785 +0,0 @@ -// -// $Id$ -// -// MCPGeometryData.m -// sequel-pro -// -// Created by Hans-Jörg Bibiko on October 07, 2010 -// -// This program is free software; you can redistribute it and/or modify -// it under the terms of the GNU General Public License as published by -// the Free Software Foundation; either version 2 of the License, or -// (at your option) any later version. -// -// This program 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 General Public License for more details. -// -// You should have received a copy of the GNU General Public License -// along with this program; if not, write to the Free Software -// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA -// -// More info at <http://code.google.com/p/sequel-pro/> - -#import "MCPGeometryData.h" - -#define SIZEOF_STORED_UINT32 4 -#define SIZEOF_STORED_DOUBLE 8 -#define POINT_DATA_SIZE (SIZEOF_STORED_DOUBLE*2) -#define WKB_HEADER_SIZE (1+SIZEOF_STORED_UINT32) -#define BUFFER_START 0 - -@implementation MCPGeometryData - -/** - * Initialize the MCPGeometryData object - */ -- (id)init -{ - if ((self = [super init])) { - geoBuffer = nil; - bufferLength = 0; - } - return self; -} - -/** - * Initialize the MCPGeometryData object with the WKB data - */ -- (id)initWithBytes:(const void *)geoData length:(NSUInteger)length -{ - if ((self = [self init])) { - bufferLength = length; - geoBuffer = malloc(bufferLength); - memcpy(geoBuffer, geoData, bufferLength); - } - return self; -} - -/** - * Return an autorelease MCPGeometryData object - */ -+ (id)dataWithBytes:(const void *)geoData length:(NSUInteger)length -{ - return [[[MCPGeometryData alloc] initWithBytes:geoData length:length] autorelease]; -} - -/** - * copyWithZone - */ -- (id)copyWithZone:(NSZone *)zone -{ - return [self retain]; -} - -/** - * Return the hex representation of the WKB buffer (only for convenience) - */ -- (NSString*)description -{ - return [[NSData dataWithBytes:geoBuffer length:bufferLength] description]; -} - -/** - * Return the length of the WKB buffer - */ -- (NSUInteger)length -{ - return bufferLength; -} - -/** - * Return NSData pointer of the WKB buffer - */ -- (NSData*)data -{ - return [NSData dataWithBytes:geoBuffer length:bufferLength]; -} - -/** - * Return a human readable WKT string of the internal format (it imitate the SQL function AsText()). - */ -- (NSString*)wktString -{ - char byteOrder; - uint32_t geoType, numberOfItems, numberOfSubItems, numberOfSubSubItems, numberOfCollectionItems; - int32_t srid; - st_point_2d aPoint; - - uint32_t i, j, k, n; // Loop counter for numberOf...Items - uint32_t ptr = BUFFER_START; // pointer to geoBuffer while parsing - - NSMutableString *wkt = [NSMutableString string]; - - if (bufferLength < WKB_HEADER_SIZE) - return @""; - - memcpy(&srid, &geoBuffer[0], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - - byteOrder = geoBuffer[ptr]; - - if(byteOrder != 0x1) - return @"Byte order not yet supported"; - - ptr++; - geoType = geoBuffer[ptr]; - ptr += SIZEOF_STORED_UINT32; - - switch(geoType) { - - case wkb_point: - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - return [NSString stringWithFormat:@"POINT(%.16g %.16g)%@", aPoint.x, aPoint.y, (srid) ? [NSString stringWithFormat:@",%d",srid]: @""]; - break; - - case wkb_linestring: - [wkt setString:@"LINESTRING("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(i=0; i < numberOfItems; i++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i < numberOfItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE; - } - [wkt appendFormat:@")%@", (srid) ? [NSString stringWithFormat:@",%d",srid]: @""]; - return wkt; - break; - - case wkb_polygon: - [wkt setString:@"POLYGON("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - [wkt appendString:@"("]; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j < numberOfSubItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE; - } - [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""]; - } - [wkt appendFormat:@")%@", (srid) ? [NSString stringWithFormat:@",%d",srid]: @""]; - return wkt; - break; - - case wkb_multipoint: - [wkt setString:@"MULTIPOINT("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i < numberOfItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE+WKB_HEADER_SIZE; - } - [wkt appendFormat:@")%@", (srid) ? [NSString stringWithFormat:@",%d",srid]: @""]; - return wkt; - break; - - case wkb_multilinestring: - [wkt setString:@"MULTILINESTRING("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - [wkt appendString:@"("]; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j < numberOfSubItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE; - } - ptr += WKB_HEADER_SIZE; - [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""]; - } - [wkt appendFormat:@")%@", (srid) ? [NSString stringWithFormat:@",%d",srid]: @""]; - return wkt; - break; - - case wkb_multipolygon: - [wkt setString:@"MULTIPOLYGON("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - [wkt appendString:@"("]; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&numberOfSubSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - [wkt appendString:@"("]; - for(k=0; k < numberOfSubSubItems; k++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (k < numberOfSubSubItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE; - } - [wkt appendFormat:@")%@", (j < numberOfSubItems-1) ? @"," : @""]; - } - ptr += WKB_HEADER_SIZE; - [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""]; - } - [wkt appendFormat:@")%@", (srid) ? [NSString stringWithFormat:@",%d",srid]: @""]; - return wkt; - break; - - case wkb_geometrycollection: - [wkt setString:@"GEOMETRYCOLLECTION("]; - numberOfCollectionItems = geoBuffer[ptr]; - ptr += SIZEOF_STORED_UINT32; - - for(n=0; n < numberOfCollectionItems; n++) { - - byteOrder = geoBuffer[ptr]; - - if(byteOrder != 0x1) - return @"Byte order not yet supported"; - - ptr++; - geoType = geoBuffer[ptr]; - ptr += SIZEOF_STORED_UINT32; - - switch(geoType) { - - case wkb_point: - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"POINT(%.16g %.16g)", aPoint.x, aPoint.y]; - ptr += POINT_DATA_SIZE; - break; - - case wkb_linestring: - [wkt appendString:@"LINESTRING("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(i=0; i < numberOfItems; i++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i < numberOfItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE; - } - [wkt appendString:@")"]; - break; - - case wkb_polygon: - [wkt appendString:@"POLYGON("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - [wkt appendString:@"("]; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j < numberOfSubItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE; - } - [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""]; - } - [wkt appendString:@")"]; - break; - - case wkb_multipoint: - [wkt appendString:@"MULTIPOINT("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i < numberOfItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE+WKB_HEADER_SIZE; - } - ptr -= WKB_HEADER_SIZE; - [wkt appendString:@")"]; - break; - - case wkb_multilinestring: - [wkt appendString:@"MULTILINESTRING("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - [wkt appendString:@"("]; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j < numberOfSubItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE; - } - ptr += WKB_HEADER_SIZE; - [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""]; - } - ptr -= WKB_HEADER_SIZE; - [wkt appendString:@")"]; - break; - - case wkb_multipolygon: - [wkt appendString:@"MULTIPOLYGON("]; - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - [wkt appendString:@"("]; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&numberOfSubSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - [wkt appendString:@"("]; - for(k=0; k < numberOfSubSubItems; k++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (k < numberOfSubSubItems-1) ? @"," : @""]; - ptr += POINT_DATA_SIZE; - } - [wkt appendFormat:@")%@", (j < numberOfSubItems-1) ? @"," : @""]; - } - ptr += WKB_HEADER_SIZE; - [wkt appendFormat:@")%@", (i < numberOfItems-1) ? @"," : @""]; - } - ptr -= WKB_HEADER_SIZE; - [wkt appendString:@")"]; - break; - - default: - return @"Error geometrycollection type parsing"; - } - [wkt appendString:(n < numberOfCollectionItems-1) ? @"," : @""]; - } - [wkt appendFormat:@")%@", (srid) ? [NSString stringWithFormat:@",%d",srid]: @""]; - return wkt; - break; - - default: - return @"Error geometry type parsing"; - } - return @"Error while parsing"; -} - -/** - * Return a dictionary of coordinates, bbox, etc. to be able to draw the given geometry. - * - * @return A dictionary having the following keys: "bbox" as NSArray of NSNumbers of x_min x_max y_min y_max, "coordinates" as NSArray containing the - * the to be drawn points as NSPoint strings, "type" as NSString - */ -- (NSDictionary*)coordinates -{ - - char byteOrder; - uint32_t geoType, numberOfItems, numberOfSubItems, numberOfSubSubItems, numberOfCollectionItems; - int32_t srid; - st_point_2d aPoint; - - uint32_t i, j, k, n; // Loop counter for numberOf...Items - uint32_t ptr = BUFFER_START; // pointer to geoBuffer while parsing - - double x_min = DBL_MAX; - double x_max = -DBL_MAX; - double y_min = DBL_MAX; - double y_max = -DBL_MAX; - - NSMutableArray *coordinates = [NSMutableArray array]; - NSMutableArray *subcoordinates = [NSMutableArray array]; - NSMutableArray *pointcoordinates = [NSMutableArray array]; - NSMutableArray *linecoordinates = [NSMutableArray array]; - NSMutableArray *linesubcoordinates = [NSMutableArray array]; - NSMutableArray *polygoncoordinates = [NSMutableArray array]; - NSMutableArray *polygonsubcoordinates = [NSMutableArray array]; - - if (bufferLength < WKB_HEADER_SIZE) - return nil; - - memcpy(&srid, &geoBuffer[0], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - - byteOrder = geoBuffer[ptr]; - - if(byteOrder != 0x1) - return nil; - - ptr++; - geoType = geoBuffer[ptr]; - ptr += SIZEOF_STORED_UINT32; - - switch(geoType) { - - case wkb_point: - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = aPoint.x; - x_max = aPoint.x; - y_min = aPoint.y; - y_max = aPoint.y; - [coordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - return [NSDictionary dictionaryWithObjectsAndKeys: - [NSArray arrayWithObjects: - [NSNumber numberWithDouble:x_min], - [NSNumber numberWithDouble:x_max], - [NSNumber numberWithDouble:y_min], - [NSNumber numberWithDouble:y_max], - nil], @"bbox", - coordinates, @"coordinates", - [NSNumber numberWithInt:srid], @"srid", - @"POINT", @"type", - nil]; - break; - - case wkb_linestring: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(i=0; i < numberOfItems; i++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [coordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE; - } - return [NSDictionary dictionaryWithObjectsAndKeys: - [NSArray arrayWithObjects: - [NSNumber numberWithDouble:x_min], - [NSNumber numberWithDouble:x_max], - [NSNumber numberWithDouble:y_min], - [NSNumber numberWithDouble:y_max], - nil], @"bbox", - [NSArray arrayWithObjects:coordinates,nil], @"coordinates", - @"LINESTRING", @"type", - nil]; - break; - - case wkb_polygon: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [subcoordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE; - } - [coordinates addObject:[[subcoordinates copy] autorelease]]; - [subcoordinates removeAllObjects]; - } - return [NSDictionary dictionaryWithObjectsAndKeys: - [NSArray arrayWithObjects: - [NSNumber numberWithDouble:x_min], - [NSNumber numberWithDouble:x_max], - [NSNumber numberWithDouble:y_min], - [NSNumber numberWithDouble:y_max], - nil], @"bbox", - coordinates, @"coordinates", - [NSNumber numberWithInt:srid], @"srid", - @"POLYGON", @"type", - nil]; - break; - - case wkb_multipoint: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [coordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE+WKB_HEADER_SIZE; - } - return [NSDictionary dictionaryWithObjectsAndKeys: - [NSArray arrayWithObjects: - [NSNumber numberWithDouble:x_min], - [NSNumber numberWithDouble:x_max], - [NSNumber numberWithDouble:y_min], - [NSNumber numberWithDouble:y_max], - nil], @"bbox", - coordinates, @"coordinates", - [NSNumber numberWithInt:srid], @"srid", - @"MULTIPOINT", @"type", - nil]; - break; - - case wkb_multilinestring: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [subcoordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE; - } - ptr += WKB_HEADER_SIZE; - [coordinates addObject:[[subcoordinates copy] autorelease]]; - [subcoordinates removeAllObjects]; - } - return [NSDictionary dictionaryWithObjectsAndKeys: - [NSArray arrayWithObjects: - [NSNumber numberWithDouble:x_min], - [NSNumber numberWithDouble:x_max], - [NSNumber numberWithDouble:y_min], - [NSNumber numberWithDouble:y_max], - nil], @"bbox", - coordinates, @"coordinates", - [NSNumber numberWithInt:srid], @"srid", - @"MULTILINESTRING", @"type", - nil]; - break; - - case wkb_multipolygon: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&numberOfSubSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(k=0; k < numberOfSubSubItems; k++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [subcoordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE; - } - [coordinates addObject:[[subcoordinates copy] autorelease]]; - [subcoordinates removeAllObjects]; - } - ptr += WKB_HEADER_SIZE; - } - return [NSDictionary dictionaryWithObjectsAndKeys: - [NSArray arrayWithObjects: - [NSNumber numberWithDouble:x_min], - [NSNumber numberWithDouble:x_max], - [NSNumber numberWithDouble:y_min], - [NSNumber numberWithDouble:y_max], - nil], @"bbox", - coordinates, @"coordinates", - [NSNumber numberWithInt:srid], @"srid", - @"MULTIPOLYGON", @"type", - nil]; - break; - - case wkb_geometrycollection: - numberOfCollectionItems = geoBuffer[ptr]; - ptr += SIZEOF_STORED_UINT32; - - for(n=0; n < numberOfCollectionItems; n++) { - - byteOrder = geoBuffer[ptr]; - - if(byteOrder != 0x1) - return nil; - - ptr++; - geoType = geoBuffer[ptr]; - ptr += SIZEOF_STORED_UINT32; - - switch(geoType) { - - case wkb_point: - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [pointcoordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE; - break; - - case wkb_linestring: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(i=0; i < numberOfItems; i++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [linesubcoordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE; - } - [linecoordinates addObject:[[linesubcoordinates copy] autorelease]]; - [linesubcoordinates removeAllObjects]; - break; - - case wkb_polygon: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [polygonsubcoordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE; - } - [polygoncoordinates addObject:[[polygonsubcoordinates copy] autorelease]]; - [polygonsubcoordinates removeAllObjects]; - } - break; - - case wkb_multipoint: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [pointcoordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE+WKB_HEADER_SIZE; - } - ptr -= WKB_HEADER_SIZE; - break; - - case wkb_multilinestring: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [linesubcoordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE; - } - [linecoordinates addObject:[[linesubcoordinates copy] autorelease]]; - [linesubcoordinates removeAllObjects]; - ptr += WKB_HEADER_SIZE; - } - ptr -= WKB_HEADER_SIZE; - break; - - case wkb_multipolygon: - memcpy(&numberOfItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; - for(i=0; i < numberOfItems; i++) { - memcpy(&numberOfSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(j=0; j < numberOfSubItems; j++) { - memcpy(&numberOfSubSubItems, &geoBuffer[ptr], SIZEOF_STORED_UINT32); - ptr += SIZEOF_STORED_UINT32; - for(k=0; k < numberOfSubSubItems; k++) { - memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); - x_min = (aPoint.x < x_min) ? aPoint.x : x_min; - x_max = (aPoint.x > x_max) ? aPoint.x : x_max; - y_min = (aPoint.y < y_min) ? aPoint.y : y_min; - y_max = (aPoint.y > y_max) ? aPoint.y : y_max; - [polygonsubcoordinates addObject:NSStringFromPoint(NSMakePoint((CGFloat)aPoint.x, (CGFloat)aPoint.y))]; - ptr += POINT_DATA_SIZE; - } - [polygoncoordinates addObject:[[polygonsubcoordinates copy] autorelease]]; - [polygonsubcoordinates removeAllObjects]; - } - ptr += WKB_HEADER_SIZE; - } - ptr -= WKB_HEADER_SIZE; - break; - - default: - return nil; - } - } - return [NSDictionary dictionaryWithObjectsAndKeys: - [NSArray arrayWithObjects: - [NSNumber numberWithDouble:x_min], - [NSNumber numberWithDouble:x_max], - [NSNumber numberWithDouble:y_min], - [NSNumber numberWithDouble:y_max], - nil], @"bbox", - [NSArray arrayWithObjects:pointcoordinates, linecoordinates, polygoncoordinates, nil], @"coordinates", - @"GEOMETRYCOLLECTION", @"type", - nil]; - break; - - default: - return nil; - } - return nil; -} - -/** - * Return the WKB type of the geoBuffer ie if buffer represents a POINT, LINESTRING, etc. - * according to stored wkbType in header file. It returns -1 if an error occurred. - */ -- (NSInteger)wkbType -{ - char byteOrder; - UInt32 geoType; - - NSUInteger ptr = BUFFER_START; // pointer to geoBuffer while parsing - - if (bufferLength < WKB_HEADER_SIZE) - return -1; - - byteOrder = geoBuffer[ptr]; - - if(byteOrder != 0x1) - return -1; - - ptr++; - geoType = geoBuffer[ptr]; - - if(geoType > 0 && geoType < 8) - return geoType; - else - return -1; - -} - -/** - * Return the WKT type of the geoBuffer ie if buffer represents a POINT, LINESTRING, etc. - * according to stored wkbType in header file. It returns nil if an error occurred. - */ -- (NSString*)wktType -{ - switch([self wkbType]) - { - case wkb_point: - return @"POINT"; - case wkb_linestring: - return @"LINESTRING"; - case wkb_polygon: - return @"POLYGON"; - case wkb_multipoint: - return @"MULTIPOINT"; - case wkb_multilinestring: - return @"MULTILINESTRING"; - case wkb_multipolygon: - return @"MULTIPOLYGON"; - case wkb_geometrycollection: - return @"GEOMETRYCOLLECTION"; - default: - return nil; - } - return nil; -} - -/** - * dealloc - */ -- (void)dealloc -{ - if(geoBuffer && bufferLength) free(geoBuffer); - [super dealloc]; -} - -@end |