• some further work on displaying geometry fields as image

- to enable the very first approach simply uncomment code in SPTableContent tableView:toolTipForCell:rect:tableColumn:row:mouseLocation: for MCPGeometryData class

1 files changed, 298 insertions, 0 deletions

diff --git a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m
index 1c511af3..b46a0dc7 100644
--- a/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m
+++ b/Frameworks/MCPKit/MCPFoundationKit/MCPGeometryData.m
@@ -352,6 +352,304 @@
 }
 
 /**
+ * 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 geoType, numberOfItems, numberOfSubItems, numberOfSubSubItems, numberOfCollectionItems;
+	st_point_2d aPoint;
+
+	NSUInteger i, j, k, n;          // Loop counter for numberOf...Items
+	NSUInteger ptr = BUFFER_START;  // pointer to geoBuffer while parsing
+
+	double x_min = 1e999;
+	double x_max = -1e999;
+	double y_min = 1e999;
+	double y_max = -1e999;
+
+	NSMutableArray *coordinates = [NSMutableArray array];
+	NSMutableArray *subcoordinates = [NSMutableArray array];
+
+	if (bufferLength < WKB_HEADER_SIZE)
+		return @"Header Error";
+
+	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);
+		x_min = aPoint.x;
+		x_max = aPoint.x;
+		y_min = aPoint.y;
+		y_max = aPoint.y;
+		[coordinates addObject:NSStringFromPoint(NSMakePoint(aPoint.x, 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",
+			@"POINT", @"type",
+			nil];
+		break;
+
+		case wkb_linestring:
+		numberOfItems = geoBuffer[ptr];
+		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(aPoint.x, 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",
+			coordinates, @"coordinates",
+			@"LINESTRING", @"type",
+			nil];
+		break;
+
+		case wkb_polygon:
+		numberOfItems = geoBuffer[ptr];
+		ptr += SIZEOF_STORED_UINT32;
+		for(i=0; i < numberOfItems; i++) {
+			numberOfSubItems = geoBuffer[ptr];
+			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(aPoint.x, 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",
+			@"POLYGON", @"type",
+			nil];
+		break;
+
+		// case wkb_multipoint:
+		// [wkt setString:@"MULTIPOINT("];
+		// numberOfItems = geoBuffer[ptr];
+		// 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 appendString:@")"];
+		// return wkt;
+		// break;
+		// 
+		// case wkb_multilinestring:
+		// [wkt setString:@"MULTILINESTRING("];
+		// numberOfItems = geoBuffer[ptr];
+		// ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+		// for(i=0; i < numberOfItems; i++) {
+		// 	numberOfSubItems = geoBuffer[ptr];
+		// 	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 appendString:@")"];
+		// return wkt;
+		// break;
+		// 
+		// case wkb_multipolygon:
+		// [wkt setString:@"MULTIPOLYGON("];
+		// numberOfItems = geoBuffer[ptr];
+		// ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+		// for(i=0; i < numberOfItems; i++) {
+		// 	numberOfSubItems = geoBuffer[ptr];
+		// 	ptr += SIZEOF_STORED_UINT32;
+		// 	[wkt appendString:@"("];
+		// 	for(j=0; j < numberOfSubItems; j++) {
+		// 		numberOfSubSubItems = geoBuffer[ptr];
+		// 		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 appendString:@")"];
+		// 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("];
+		// 		numberOfItems = geoBuffer[ptr];
+		// 		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("];
+		// 		numberOfItems = geoBuffer[ptr];
+		// 		ptr += SIZEOF_STORED_UINT32;
+		// 		for(i=0; i < numberOfItems; i++) {
+		// 			numberOfSubItems = geoBuffer[ptr];
+		// 			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("];
+		// 		numberOfItems = geoBuffer[ptr];
+		// 		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("];
+		// 		numberOfItems = geoBuffer[ptr];
+		// 		ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+		// 		for(i=0; i < numberOfItems; i++) {
+		// 			numberOfSubItems = geoBuffer[ptr];
+		// 			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("];
+		// 		numberOfItems = geoBuffer[ptr];
+		// 		ptr += SIZEOF_STORED_UINT32+WKB_HEADER_SIZE;
+		// 		for(i=0; i < numberOfItems; i++) {
+		// 			numberOfSubItems = geoBuffer[ptr];
+		// 			ptr += SIZEOF_STORED_UINT32;
+		// 			[wkt appendString:@"("];
+		// 			for(j=0; j < numberOfSubItems; j++) {
+		// 				numberOfSubSubItems = geoBuffer[ptr];
+		// 				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 appendString:@")"];
+		// return wkt;
+		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.
  */