diff options
Diffstat (limited to 'Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m')
| -rw-r--r-- | Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m | 126 |
1 files changed, 121 insertions, 5 deletions
diff --git a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m index 9f7ac19a..6a41e657 100644 --- a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m +++ b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m @@ -25,6 +25,11 @@ #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) + @implementation MCPGeometryData - (id)copyWithZone:(NSZone *)zone { return [self retain]; } @@ -38,20 +43,20 @@ return self; } -- (id)initWithData:(NSData*)geoData +- (id)initWithBytes:(Byte*)geoData length:(NSUInteger)length { if ((self = [self init])) { - bufferLength = [geoData length]; + bufferLength = length; geoBuffer = malloc(bufferLength); - memcpy(geoBuffer, [geoData bytes], bufferLength); + memcpy(geoBuffer, geoData, bufferLength); } return self; } -+ (id)dataWithData:(NSData*)geoData ++ (id)dataWithBytes:(Byte*)geoData length:(NSUInteger)length { - return [[[MCPGeometryData alloc] initWithData:geoData] autorelease]; + return [[[MCPGeometryData alloc] initWithBytes:geoData length:length] autorelease]; } - (NSString*)description @@ -64,6 +69,117 @@ return bufferLength; } +- (NSData*)data +{ + return [NSData dataWithBytes:geoBuffer length:bufferLength]; +} + +- (NSString*)wktString +{ + char byteOrder; + UInt32 geoType, c, c1; + st_point_2d aPoint; + NSUInteger ptr; + double x, y; + NSMutableString *wkt = [NSMutableString string]; + NSUInteger i,j; + BOOL raw = NO; + + if (bufferLength < WKB_HEADER_SIZE) + return @"Error"; + + ptr = (raw) ? 0 : 4; + + byteOrder = geoBuffer[ptr]; + + if(byteOrder != 0x1) + return @"Byte order not yet supported"; + + ptr++; + geoType = geoBuffer[ptr]; + ptr += SIZEOF_STORED_UINT32; + + NSData *d; + switch(geoType) { + case wkb_point: + memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); + return [NSString stringWithFormat:@"POINT(%.16g %.16g)",aPoint.x, aPoint.y]; + break; + case wkb_linestring: + [wkt setString:@"LINESTRING("]; + c = geoBuffer[ptr]; + ptr += SIZEOF_STORED_UINT32; + for(i=0; i<c; i++) { + memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); + [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i<c-1) ? @"," : @""]; + ptr += POINT_DATA_SIZE; + } + [wkt appendString:@")"]; + return wkt; + break; + case wkb_polygon: + [wkt setString:@"POLYGON("]; + c = geoBuffer[ptr]; + ptr += SIZEOF_STORED_UINT32; + for(i=0; i<c; i++) { + c1 = geoBuffer[ptr]; + ptr += SIZEOF_STORED_UINT32; + [wkt appendString:@"("]; + for(j=0; j<c1; j++) { + memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); + [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j<c1-1) ? @"," : @""]; + ptr += POINT_DATA_SIZE; + } + [wkt appendFormat:@")%@", (i<c-1) ? @"," : @""]; + } + [wkt appendString:@")"]; + return wkt; + break; + case wkb_multipoint: + [wkt setString:@"MULTIPOINT("]; + c = geoBuffer[ptr]; + ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; + for(i=0; i<c; i++) { + memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); + [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (i<c-1) ? @"," : @""]; + ptr += POINT_DATA_SIZE+WKB_HEADER_SIZE; + } + [wkt appendString:@")"]; + return wkt; + break; + case wkb_multilinestring: + [wkt setString:@"MULTILINESTRING("]; + c = geoBuffer[ptr]; + ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE; + for(i=0; i<c; i++) { + c1 = geoBuffer[ptr]; + ptr += SIZEOF_STORED_UINT32; + [wkt appendString:@"("]; + for(j=0; j<c1; j++) { + memcpy(&aPoint, &geoBuffer[ptr], POINT_DATA_SIZE); + [wkt appendFormat:@"%.16g %.16g%@", aPoint.x, aPoint.y, (j<c1-1) ? @"," : @""]; + ptr += POINT_DATA_SIZE; + } + ptr += WKB_HEADER_SIZE; + [wkt appendFormat:@")%@", (i<c-1) ? @"," : @""]; + } + [wkt appendString:@")"]; + return wkt; + break; + case wkb_multipolygon: + // NSLog(@"ml %@", geoData); + + [wkt setString:@"MULTIPOLYGON be patient"]; + break; + case wkb_geometrycollection: + [wkt setString:@"GEOMETRYCOLLECTION be patient"]; + break; + default: + return @"Error geometry type parsing"; + } + return wkt; +} + - (void)dealloc { if(geoBuffer && bufferLength) free(geoBuffer); |