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+/*
+ * cocos2d for iPhone: http://www.cocos2d-iphone.org
+ *
+ * Copyright (c) 2008-2010 Ricardo Quesada
+ * Copyright (c) 2011 Zynga Inc.
+ * 
+ * Permission is hereby granted, free of charge, to any person obtaining a copy
+ * of this software and associated documentation files (the "Software"), to deal
+ * in the Software without restriction, including without limitation the rights
+ * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+ * copies of the Software, and to permit persons to whom the Software is
+ * furnished to do so, subject to the following conditions:
+ * 
+ * The above copyright notice and this permission notice shall be included in
+ * all copies or substantial portions of the Software.
+ * 
+ * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+ * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+ * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+ * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+ * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+ * THE SOFTWARE.
+ */
+
+
+#import "Platforms/CCGL.h"
+#import "CCCamera.h"
+#import "ccMacros.h"
+#import "CCDrawingPrimitives.h"
+
+@implementation CCCamera
+
+@synthesize dirty = dirty_;
+
+-(id) init
+{
+        if( (self=[super init]) )
+                [self restore];
+        
+        return self;
+}
+
+- (NSString*) description
+{
+        return [NSString stringWithFormat:@"<%@ = %08X | center = (%.2f,%.2f,%.2f)>", [self class], self, centerX_, centerY_, centerZ_];
+}
+
+
+- (void) dealloc
+{
+        CCLOGINFO(@"cocos2d: deallocing %@", self);
+        [super dealloc];
+}
+
+-(void) restore
+{
+        eyeX_ = eyeY_ = 0;
+        eyeZ_ = [CCCamera getZEye];
+        
+        centerX_ = centerY_ = centerZ_ = 0;
+        
+        upX_ = 0.0f;
+        upY_ = 1.0f;
+        upZ_ = 0.0f;
+        
+        dirty_ = NO;
+}
+
+-(void) locate
+{
+        if( dirty_ )
+                gluLookAt( eyeX_, eyeY_, eyeZ_,
+                                centerX_, centerY_, centerZ_,
+                                upX_, upY_, upZ_
+                                );
+}
+
++(float) getZEye
+{
+        return FLT_EPSILON;
+//      CGSize s = [[CCDirector sharedDirector] displaySize];
+//      return ( s.height / 1.1566f );
+}
+
+-(void) setEyeX: (float)x eyeY:(float)y eyeZ:(float)z
+{
+        eyeX_ = x * CC_CONTENT_SCALE_FACTOR();
+        eyeY_ = y * CC_CONTENT_SCALE_FACTOR();
+        eyeZ_ = z * CC_CONTENT_SCALE_FACTOR();
+        dirty_ = YES;   
+}
+
+-(void) setCenterX: (float)x centerY:(float)y centerZ:(float)z
+{
+        centerX_ = x * CC_CONTENT_SCALE_FACTOR();
+        centerY_ = y * CC_CONTENT_SCALE_FACTOR();
+        centerZ_ = z * CC_CONTENT_SCALE_FACTOR();
+        dirty_ = YES;
+}
+
+-(void) setUpX: (float)x upY:(float)y upZ:(float)z
+{
+        upX_ = x;
+        upY_ = y;
+        upZ_ = z;
+        dirty_ = YES;
+}
+
+-(void) eyeX: (float*)x eyeY:(float*)y eyeZ:(float*)z
+{
+        *x = eyeX_ / CC_CONTENT_SCALE_FACTOR();
+        *y = eyeY_ / CC_CONTENT_SCALE_FACTOR();
+        *z = eyeZ_ / CC_CONTENT_SCALE_FACTOR();
+}
+
+-(void) centerX: (float*)x centerY:(float*)y centerZ:(float*)z
+{
+        *x = centerX_ / CC_CONTENT_SCALE_FACTOR();
+        *y = centerY_ / CC_CONTENT_SCALE_FACTOR();
+        *z = centerZ_ / CC_CONTENT_SCALE_FACTOR();
+}
+
+-(void) upX: (float*)x upY:(float*)y upZ:(float*)z
+{
+        *x = upX_;
+        *y = upY_;
+        *z = upZ_;
+}
+
+@end