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XNPlotManager.m
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XNPlotManager.m
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//
// XNPlotManager.m
// XNMaths
//
// Created by Нат Гаджибалаев on 03.12.09.
// Copyright 2009 Нат Гаджибалаев. All rights reserved.
//
#import "XNPlotManager.h"
#import "plplot.h"
//
// Singletone implementation
static XNPlotManager *sharedManager = nil;
@implementation XNPlotManager
//
// Synthesize properties
@synthesize maxPlots, connectedPlots, isInitialized;
+ (XNPlotManager *) sharedManager {
@synchronized(self) {
if(sharedManager == nil){
[[self alloc] init];
}
}
return sharedManager;
}
+ (id)allocWithZone:(NSZone *)zone {
@synchronized(self) {
if(sharedManager == nil) {
sharedManager = [super allocWithZone:zone];
return sharedManager;
}
}
return nil;
}
- (id)copyWithZone:(NSZone *)zone {
return self;
}
- (id)retain {
return self;
}
- (unsigned)retainCount {
return UINT_MAX; //denotes an object that cannot be released
}
- (void)release {
// never release
}
- (id)autorelease {
return self;
}
//
// Init methods
- (XNPlotManager *) init {
self = [super init];
cols = 1;
rows = 1;
isInitialized = NO;
maxPlots = 1;
connectedPlots = 0;
return self;
}
//
// Properties
- (NSUInteger) cols {
return cols;
}
- (void) setCols: (NSUInteger) iCols {
if( isInitialized ){
[NSException raise:@"XNPlotManager exception." format:@"Trying to set cols after plotting was started."];
} else {
cols = iCols;
maxPlots = rows * cols;
}
}
- (NSUInteger) rows {
return rows;
}
- (void) setRows: (NSUInteger) iRows {
if( isInitialized ){
[NSException raise:@"XNPlotManager exception." format:@"Trying to set rows after plotting was started."];
} else {
rows = iRows;
maxPlots = rows * cols;
}
}
//
// Control methods
- (BOOL) addPlot {
if( ( connectedPlots < maxPlots ) && isInitialized ) {
connectedPlots++;
return YES;
}
return NO;
}
- (void) startPlotting {
if(!isInitialized){
plscolbg(255,255,255);
plscol0(1, 0, 0, 0);
plstart("aqt", cols, rows);
}
isInitialized = YES;
}
- (void) endPlotting {
plend1();
connectedPlots = 0;
isInitialized = NO;
}
//
// Memory mgmt
- (void) dealloc {
[super dealloc];
}
@end