/*
 *  mcaDB.h
 *  mcaDB1
 *
 *  Created by Mitchell Allen on 5/15/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
/*
 *  Instructions for linking to sqlite3 library
 *
 *  In Xcode:
 *
 *      Click on folder: Groups & File / Frameworks
 *      Select menu: Project / Add to Project ...
 *      Navigate to:  /Developer/Platforms/iPhoneSimulator.platform/Developer/SDKs/iPhoneSimulator[version].sdk/usr/lib/
 *      Select file: libsqlite3.dylib
 *      Uncheck: Copy items into destination groups folder if needed
 *      Change Reference Type to: Relative to Current SDK
 */
 
#include "/usr/include/sqlite3.h"
 
#include "mcaUtils.h"
 
class mcaDB {
 
protected:
 
	sqlite3	*m_database;
 
	bool m_open;
 
public:
 
	void errorDB();
 
	bool openDB( const char *szDB );
 
	void closeDB( bool bForce );
 
	bool execDB( const char *szSQL );
 
	bool queryDB( const char *szSQL );
 
};

/*
 *  mcaDB.mm
 *  mcaDB1
 *
 *  Created by Mitchell Allen on 5/15/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
#include "mcaDB.h"
 
void mcaDB::errorDB()
{
	mcaUtils_logString( @"ERROR", sqlite3_errmsg( m_database ) );
}
 
bool mcaDB::openDB( const char *szDB ) {
 
	NSLog( @"mcaDB::openDB( ... )" );
 
	mcaUtils_logString( @"DATABASE", szDB );
 
	if( sqlite3_open( szDB, &m_database ) != SQLITE_OK ) {
 
		errorDB();
 
		closeDB( true );
 
		return false;
	}
 
	m_open = true;
 
	return true;
}
 
void mcaDB::closeDB( bool bForce ) {
 
	NSLog( @"mcaDB::closeDB( ... )" );
 
	if( m_open || bForce ) {
 
		sqlite3_close( m_database );
 
		m_open = false;
	}
}
 
bool mcaDB::execDB( const char *szQuery ) {
 
	NSLog( @"mcaDB::execDB( ... )" );
 
	mcaUtils_logString( @"QUERY", szQuery );
 
	if( ! m_open ) return false;	
 
	if( sqlite3_exec( m_database, szQuery, NULL, NULL, NULL ) != SQLITE_OK ) {
 
		errorDB();
 
		return false;
	}
 
	return true;
}
 
bool mcaDB::queryDB( const char *szSQL ) {
 
	NSLog( @"mcaDB::queryDB( ... )" );
 
	mcaUtils_logString( @"QUERY", szSQL );
 
	if( ! m_open ) return false;
 
	sqlite3_stmt	*stmt;
 
	if( sqlite3_prepare_v2( m_database, szSQL, -1, &stmt, nil ) == SQLITE_OK) {
 
		while( sqlite3_step( stmt ) == SQLITE_ROW ) {
 
			NSLog( @" ... looping ... " );
 
			int iCols = sqlite3_column_count( stmt );
 
			for( int i = 0; i < iCols; i++ ) {
 
				const char *colName = sqlite3_column_name( stmt, i );
 
				mcaUtils_logString( @"COLUMN", colName );
 
				long colType = sqlite3_column_type( stmt, i );
 
				switch( colType ) {
 
					case SQLITE_INTEGER:
 
						int fldInt = sqlite3_column_int( stmt, i );
						mcaUtils_logInteger( @"INTEGER", fldInt );
 
						break;
					case SQLITE_FLOAT:
 
						NSLog( @"FLOAT" );
 
						float fldFloat = sqlite3_column_double( stmt, i );
						break;
					case SQLITE_TEXT:
 
						const unsigned char * fldStr = sqlite3_column_text( stmt, i );
						mcaUtils_logString( @"TEXT", (const char *) fldStr );
 
						break;
					case SQLITE_BLOB:
 
						int fldSize = sqlite3_column_bytes( stmt, i );
						mcaUtils_logInteger( @"BLOB (size)", fldSize );
						break;
					case SQLITE_NULL:
						break;
					default:
						break;
				}
			}
 
		}
 
		sqlite3_finalize(stmt);
	}
 
	return true;
}

/*
 *  mcaUtils.h
 *  mcaDB1
 *
 *  Created by Mitchell Allen on 5/15/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
void mcaUtils_logString( NSString *szLabel, const char * str );
void mcaUtils_logInteger( NSString * szLabel, int i );

/*
 *  mcaUtils.mm
 *  mcaDB1
 *
 *  Created by Mitchell Allen on 5/15/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
#include "mcaUtils.h"
 
void mcaUtils_logString( NSString * szLabel, const char * str )
{
	NSString *szTemp = [[NSString alloc] initWithUTF8String:str];
 
	NSString *szMessage = [[NSString alloc] initWithFormat: @"%@ = %@", szLabel, szTemp ];
 
	NSLog( szMessage );
 
	[szTemp release];
	[szMessage release];
}
 
void mcaUtils_logInteger( NSString * szLabel, int i )
{
	NSString *szMessage = [[NSString alloc] initWithFormat: @"%@ = %d", szLabel, i ];
 
	NSLog( szMessage );
 
	[szMessage release];
}

#define TEST_DB_FILE	@"/test.db1"

- (NSString *) dataFilePath;
{
	NSArray *paths = NSSearchPathForDirectoriesInDomains(NSDocumentDirectory, NSUserDomainMask, YES);
 
	NSString *documentsDirectory = [paths objectAtIndex:0];
 
	return [documentsDirectory stringByAppendingString:TEST_DB_FILE];
}

    m_table.initDB( [[self dataFilePath] UTF8String] );

void testTable::initDB( const char *szDB ) {
 
	NSLog( @"START: testTable::initDB( ... )" );
 
	if( ! m_db.openDB( szDB ) ) {
 
		NSLog( @" ... ERROR opening database" );
 
		return;
	}
 
	if( ! m_db.execDB(  "DROP TABLE TEST_TABLE;" ) ) {
 
		// Since this is just a test database - we drop the table every time to start fresh.
 
		NSLog( @" ... Couldn't drop table ... ignoring " );
	}
 
	if( ! m_db.execDB(  "CREATE TABLE IF NOT EXISTS TEST_TABLE (ROW INTEGER PRIMARY KEY, PLANET TEXT);" ) ) {
 
		NSLog( @" ... ERROR creating table" );
 
		return;
	}
 
	if( ! m_db.execDB(  "INSERT OR REPLACE INTO TEST_TABLE (PLANET) VALUES ('Mercury');" ) ) {
 
		NSLog( @" ... ERROR inserting row" );
 
		return;
	}
 
	if( ! m_db.execDB(  "INSERT OR REPLACE INTO TEST_TABLE (PLANET) VALUES ('Venus');" ) ) {
 
		NSLog( @" ... ERROR inserting row" );
 
		return;
	}
 
	if( ! m_db.queryDB(  "SELECT COUNT(*) AS myCount FROM TEST_TABLE;" ) ) {
 
		NSLog( @" ... ERROR querying DB" );
 
		return;
	}
 
	if( ! m_db.queryDB(  "SELECT * FROM TEST_TABLE;" ) ) {
 
		NSLog( @" ... ERROR querying DB" );
 
		return;
	}
 
        m_db.closeDB( false );
 
	NSLog( @"END: testTable::initDB( ... )" );
}

mcaDB1[3138:20b] START: testTable::initDB( ... )
mcaDB1[3138:20b] mcaDB::openDB( ... )
mcaDB1[3138:20b] DATABASE = /Users/apple/Library/Application Support/iPhone Simulator/User/Applications/.../Documents/test.db1
mcaDB1[3138:20b] mcaDB::execDB( ... )
mcaDB1[3138:20b] QUERY = DROP TABLE TEST_TABLE;
mcaDB1[3138:20b] mcaDB::execDB( ... )
mcaDB1[3138:20b] QUERY = CREATE TABLE IF NOT EXISTS TEST_TABLE (ROW INTEGER PRIMARY KEY, PLANET TEXT);
mcaDB1[3138:20b] mcaDB::execDB( ... )
mcaDB1[3138:20b] QUERY = INSERT OR REPLACE INTO TEST_TABLE (PLANET) VALUES ('Mercury');
mcaDB1[3138:20b] mcaDB::execDB( ... )
mcaDB1[3138:20b] QUERY = INSERT OR REPLACE INTO TEST_TABLE (PLANET) VALUES ('Venus');
mcaDB1[3138:20b] mcaDB::queryDB( ... )
mcaDB1[3138:20b] QUERY = SELECT COUNT(*) AS myCount FROM TEST_TABLE;
mcaDB1[3138:20b]  ... looping ...
mcaDB1[3138:20b] COLUMN = myCount
mcaDB1[3138:20b] INTEGER = 2
mcaDB1[3138:20b] mcaDB::queryDB( ... )
mcaDB1[3138:20b] QUERY = SELECT * FROM TEST_TABLE;
mcaDB1[3138:20b]  ... looping ...
mcaDB1[3138:20b] COLUMN = ROW
mcaDB1[3138:20b] INTEGER = 1
mcaDB1[3138:20b] COLUMN = PLANET
mcaDB1[3138:20b] TEXT = Mercury
mcaDB1[3138:20b]  ... looping ...
mcaDB1[3138:20b] COLUMN = ROW
mcaDB1[3138:20b] INTEGER = 2
mcaDB1[3138:20b] COLUMN = PLANET
mcaDB1[3138:20b] TEXT = Venus
mcaDB1[3138:20b] mcaDB::closeDB( ... )
mcaDB1[3138:20b] END: testTable::initDB( ... )

/*
 *  MyWorld1.h
 *  MyWorld1
 *
 *  Created by Mitchell Allen on 5/6/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
#ifndef  __MYWORLD1__
#define  __MYWORLD1__
 
//  OpenGL ES includes for the iPhone only
#ifdef TARGET_OS_IPHONE
#import <OpenGLES/ES1/gl.h>
#import <OpenGLES/ES1/glext.h>
 
#define SCREEN_X	480
#define SCREEN_Y	320 
 
#endif
 
class MyWorld1 {
 
public:
 
	void setupGL();
	void tearDownGL();
	void resizeGL( int iWidth, int iHeight );
	void paintGL();
 
	void animate();
 
	void clickStart( int x, int y );
	void clickStop( int x, int y );
	void clickDrag( int x, int y );
	void clickCancel( int x, int y );
 
};
 
#endif

/*
 *  MyWorld1.mm
 *  MyWorld1
 *
 *  Created by Mitchell Allen on 5/6/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
#include "MyWorld1.h"
 
void MyWorld1::setupGL()
{
	NSLog( @"MyWorld1View::setupGL()" );
 
	// Put your OpenGL ES setup code here.
}
 
void MyWorld1::tearDownGL()
{
	NSLog( @"MyWorld1View::tearDownGL()" );
 
	// Put your OpenGL ES teardown code here.
}
 
void MyWorld1::resizeGL( int w, int h )
{
	// Put your OpenGL ES resize code here.
}
 
void MyWorld1::paintGL()
{
	// Put your OpenGL ES paint code here.
}
 
void MyWorld1::animate()
{
	// Put your OpenGL ES animation code here.
}
 
void MyWorld1::clickStart( int x, int y )
{
	NSLog( @"MyWorld1View::clickStart( %i, %i )", x, y );
 
	// Handle start of user touching the screen
}
 
void MyWorld1::clickStop( int x, int y )
{
	// On iPhone - will not get called if clickCancel is fired.
 
	NSLog( @"MyWorld1View::clickStop( %i, %i )", x, y );
 
	// Handle end of user touching the screen
}
 
void MyWorld1::clickDrag( int x, int y )
{
	NSLog( @"MyWorld1View::clickDrag( %i, %i )", x, y );
 
	// Handle user dragging finger across the screen
}
 
void MyWorld1::clickCancel( int x, int y )
{
	// On iPhone, will be called instead of clickStop - like when phone rings.
 
	NSLog( @"MyWorld1View::clickCancel( %i, %i )", x, y );
 
	// Handle app being stopped by something like the phone ringing on an iPhone.
}

//
//  EAGLView.h
//  MyWorld1
//
//  Created by Mitchell Allen on 5/6/09.
//  Copyright __MyCompanyName__ 2009. All rights reserved.
//
 
 
#import <UIKit/UIKit.h>
#import <OpenGLES/EAGL.h>
#import <OpenGLES/ES1/gl.h>
#import <OpenGLES/ES1/glext.h>
 
// MCA - Update
#include "MyWorld1.h"
 
/*
This class wraps the CAEAGLLayer from CoreAnimation into a convenient UIView subclass.
The view content is basically an EAGL surface you render your OpenGL scene into.
Note that setting the view non-opaque will only work if the EAGL surface has an alpha channel.
*/
@interface EAGLView : UIView {
 
@private
    /* The pixel dimensions of the backbuffer */
    GLint backingWidth;
    GLint backingHeight;
 
    EAGLContext *context;
 
    /* OpenGL names for the renderbuffer and framebuffers used to render to this view */
    GLuint viewRenderbuffer, viewFramebuffer;
 
    /* OpenGL name for the depth buffer that is attached to viewFramebuffer, if it exists (0 if it does not exist) */
    GLuint depthRenderbuffer;
 
    NSTimer *animationTimer;
    NSTimeInterval animationInterval;
 
	// MCA
	MyWorld1	m_world;	// C++ object
}
 
@property NSTimeInterval animationInterval;
 
- (void)startAnimation;
- (void)stopAnimation;
- (void)drawView;
 
// MCA
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *) event;
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event;
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event;
 
@end

//
//  EAGLView.m
//  MyWorld1
//
//  Created by Mitchell Allen on 5/6/09.
//  Copyright __MyCompanyName__ 2009. All rights reserved.
//
 
 
 
#import <QuartzCore/QuartzCore.h>
#import <OpenGLES/EAGLDrawable.h>
 
#import "EAGLView.h"
 
////////////////////////////////////////////////////
// MCA - IMPORTANT!  Change from 0 to 1
#define USE_DEPTH_BUFFER 1
 
// A class extension to declare private methods
@interface EAGLView ()
 
@property (nonatomic, retain) EAGLContext *context;
@property (nonatomic, assign) NSTimer *animationTimer;
 
- (BOOL) createFramebuffer;
- (void) destroyFramebuffer;
 
@end
 
 
@implementation EAGLView
 
@synthesize context;
@synthesize animationTimer;
@synthesize animationInterval;
 
 
// You must implement this method
+ (Class)layerClass {
    return [CAEAGLLayer class];
}
 
 
//The GL view is stored in the nib file. When it's unarchived it's sent -initWithCoder:
- (id)initWithCoder:(NSCoder*)coder {
 
    if ((self = [super initWithCoder:coder])) {
        // Get the layer
        CAEAGLLayer *eaglLayer = (CAEAGLLayer *)self.layer;
 
        eaglLayer.opaque = YES;
        eaglLayer.drawableProperties = [NSDictionary dictionaryWithObjectsAndKeys:
                                        [NSNumber numberWithBool:NO], kEAGLDrawablePropertyRetainedBacking, kEAGLColorFormatRGBA8, kEAGLDrawablePropertyColorFormat, nil];
 
        context = [[EAGLContext alloc] initWithAPI:kEAGLRenderingAPIOpenGLES1];
 
        if (!context || ![EAGLContext setCurrentContext:context]) {
            [self release];
            return nil;
        }
 
		//////////////////////
		// MCA
		m_world.setupGL();
		m_world.resizeGL( backingWidth, backingHeight );
		////////////////////////
 
        animationInterval = 1.0 / 60.0;
    }
    return self;
}
 
 
- (void)drawView {
 
    [EAGLContext setCurrentContext:context];
 
	/////////////////////////
	// MCA
	m_world.animate();
 
	m_world.resizeGL( backingWidth, backingHeight );
 
	m_world.paintGL();
	///////////////////////////
 
 
    glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
    [context presentRenderbuffer:GL_RENDERBUFFER_OES];
}
 
 
- (void)layoutSubviews {
    [EAGLContext setCurrentContext:context];
    [self destroyFramebuffer];
    [self createFramebuffer];
    [self drawView];
}
 
 
- (BOOL)createFramebuffer {
 
    glGenFramebuffersOES(1, &viewFramebuffer);
    glGenRenderbuffersOES(1, &viewRenderbuffer);
 
    glBindFramebufferOES(GL_FRAMEBUFFER_OES, viewFramebuffer);
    glBindRenderbufferOES(GL_RENDERBUFFER_OES, viewRenderbuffer);
    [context renderbufferStorage:GL_RENDERBUFFER_OES fromDrawable:(CAEAGLLayer*)self.layer];
    glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_COLOR_ATTACHMENT0_OES, GL_RENDERBUFFER_OES, viewRenderbuffer);
 
    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_WIDTH_OES, &backingWidth);
    glGetRenderbufferParameterivOES(GL_RENDERBUFFER_OES, GL_RENDERBUFFER_HEIGHT_OES, &backingHeight);
 
    if (USE_DEPTH_BUFFER) {
        glGenRenderbuffersOES(1, &depthRenderbuffer);
        glBindRenderbufferOES(GL_RENDERBUFFER_OES, depthRenderbuffer);
        glRenderbufferStorageOES(GL_RENDERBUFFER_OES, GL_DEPTH_COMPONENT16_OES, backingWidth, backingHeight);
        glFramebufferRenderbufferOES(GL_FRAMEBUFFER_OES, GL_DEPTH_ATTACHMENT_OES, GL_RENDERBUFFER_OES, depthRenderbuffer);
    }
 
    if(glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES) != GL_FRAMEBUFFER_COMPLETE_OES) {
        NSLog(@"failed to make complete framebuffer object %x", glCheckFramebufferStatusOES(GL_FRAMEBUFFER_OES));
        return NO;
    }
 
    return YES;
}
 
 
- (void)destroyFramebuffer {
 
    glDeleteFramebuffersOES(1, &viewFramebuffer);
    viewFramebuffer = 0;
    glDeleteRenderbuffersOES(1, &viewRenderbuffer);
    viewRenderbuffer = 0;
 
    if(depthRenderbuffer) {
        glDeleteRenderbuffersOES(1, &depthRenderbuffer);
        depthRenderbuffer = 0;
    }
}
 
 
- (void)startAnimation {
    self.animationTimer = [NSTimer scheduledTimerWithTimeInterval:animationInterval target:self selector:@selector(drawView) userInfo:nil repeats:YES];
}
 
 
- (void)stopAnimation {
    self.animationTimer = nil;
}
 
 
- (void)setAnimationTimer:(NSTimer *)newTimer {
    [animationTimer invalidate];
    animationTimer = newTimer;
}
 
 
- (void)setAnimationInterval:(NSTimeInterval)interval {
 
    animationInterval = interval;
    if (animationTimer) {
        [self stopAnimation];
        [self startAnimation];
    }
}
 
 
- (void)dealloc {
 
    [self stopAnimation];
 
    if ([EAGLContext currentContext] == context) {
        [EAGLContext setCurrentContext:nil];
    }
 
	/////////////////////////
	// MCA
	m_world.tearDownGL();
 
    [context release];  
    [super dealloc];
}
 
// MCA
 
- (void)touchesBegan:(NSSet *)touches withEvent:(UIEvent *) event {
 
	// NSLog(@"DEBUG: Touches began" );
 
	UITouch *touch = [touches anyObject];
 
	CGPoint	pos = [touch locationInView:self];
 
	m_world.clickStart( pos.x, pos.y );
}
 
- (void)touchesCancelled:(NSSet *)touches withEvent:(UIEvent *)event {
 
	// NSLog(@"DEBUG: Touches cancelled");
 
	// Will be called if something happens - like the phone rings
 
	UITouch *touch = [touches anyObject];
 
	CGPoint	pos = [touch locationInView:self];
 
	m_world.clickCancel( pos.x, pos.y );
}
 
- (void)touchesEnded:(NSSet *)touches withEvent:(UIEvent *)event {
 
	// NSLog(@"DEBUG: Touches ended");
 
	// Note that if phone rings, touchesCancelled will fire instead of touchesEnded
 
	UITouch *touch = [touches anyObject];
 
	CGPoint	pos = [touch locationInView:self];
 
	m_world.clickStop( pos.x, pos.y );
}
 
- (void)touchesMoved:(NSSet *)touches withEvent:(UIEvent *)event {
 
	// NSLog(@"DEBUG: Touches moved" );
 
	UITouch *touch = [touches anyObject];
 
	CGPoint	pos = [touch locationInView:self];
 
	m_world.clickDrag( pos.x, pos.y );
}
 
 
@end

/*
 *  mcaTexture.h
 *
 *  Created by Mitchell Allen on 4/17/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
#ifndef  __MCA_TEXTURE__
#define  __MCA_TEXTURE__
 
#ifdef TARGET_OS_IPHONE
#import <OpenGLES/ES1/gl.h>
#import <OpenGLES/ES1/glext.h>
#endif
 
class mcaTexture {
 
protected:
 
	GLuint m_texture;	// OpenGL name for the  texture
 
	void initTexture( size_t w, size_t h, int iType, GLvoid *pImage );
 
public:
 
	GLuint getTexture();
 
	void initWithChecks();
 
	void initFromImage( NSString *location);
 
};
 
#endif

/*
 *  mcaTexture.mm
 *  mcaGL1
 *
 *  Created by Mitchell Allen on 4/24/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
#include "mcaTexture.h"
 
#define checkImageWidth	64
#define checkImageHeight 64
static GLubyte checkImage[ checkImageHeight][checkImageWidth ][ 4 ];
 
GLuint mcaTexture::getTexture()
{
	return m_texture;
}
 
void mcaTexture::initTexture( size_t w, size_t h, int iType, GLvoid *pImage )
{
	NSLog( @"START: mcaTexture::initTexture( '...' )" );
 
	GLint					saveName;
 
	// Now use OpenGL ES to generate a name for the texture.
	// Pass by reference so that our texture variable gets set.
 
	glGenTextures(1, &m_texture);
 
	glGetIntegerv(GL_TEXTURE_BINDING_2D, &saveName);
 
	// Bind the texture name. 
	glBindTexture(GL_TEXTURE_2D, m_texture);
 
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 
	glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 
	// Specify a 2D texture image, providing a pointer to the image data in memory
 
	switch( iType ) {
		case 1:
			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, pImage);
			break;
		case 2:
			glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, pImage);
			break;
		case 3:
			glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, w, h, 0, GL_ALPHA, GL_UNSIGNED_BYTE, pImage);
			break;
		default:
			break;
	}
 
	glBindTexture(GL_TEXTURE_2D, saveName);
 
	NSLog( @"END: mcaTexture::initTexture()" );
}
 
void mcaTexture::initWithChecks() 
{
	NSLog( @"START: mcaTexture::initWithChecks( '...' )" );
 
	int i, j, c;
 
	for( i = 0; i < checkImageHeight; i++ ) {
		for( j = 0; j < checkImageWidth; j++ ) {
			c = ((((i&0x8)==0)^((j&0x8))==0))*255;
			checkImage[i][j][0] = (GLubyte) c;
			checkImage[i][j][1] = (GLubyte) c;
			checkImage[i][j][2] = (GLubyte) c;
			checkImage[i][j][3] = (GLubyte) 255;  // For ghost effect ( 255 / 2 )
		}
	}
 
	initTexture( checkImageWidth, checkImageHeight, 1, checkImage );
 
	NSLog( @"END: mcaTexture::initWithChecks( '...' )" );
}
 
 
void mcaTexture::initFromImage( NSString *location)
{
	NSLog( @"START: mcaTexture::initFromImage( '...' )" );
 
	// Creates a Core Graphics image from an image file using our location.
	CGImageRef spriteImage = [UIImage imageNamed:location].CGImage;
 
	// Get the width and height of the image.
	size_t w = CGImageGetWidth(spriteImage);
	size_t h = CGImageGetHeight(spriteImage);
 
	//TODO - resize the width and the height to the nearest power of 2.
 
	//Only create a sprite if we were able to properly load the CG image.
	if(spriteImage)
	{
		NSLog( @"... image loaded successfully ..." );
 
		// Allocated memory needed for the bitmap context
		GLubyte *spriteData = (GLubyte *) malloc(w * h * 4);
 
		// Use the bitmap creation function provided by the Core Graphics framework. 
		CGContextRef spriteContext = CGBitmapContextCreate(spriteData, w, h, 8, w * 4, CGImageGetColorSpace(spriteImage), kCGImageAlphaPremultipliedLast);
 
		// After we create the context, we can draw the sprite image to the context.
		CGContextDrawImage(spriteContext, CGRectMake(0.0, 0.0, (CGFloat)w, (CGFloat)h), spriteImage);
 
		// We don't need the context at this point, so we need to release it to avoid memory leaks.
		CGContextRelease(spriteContext);
 
		initTexture( w, h, 1, spriteData );
 
		// Release the image data, which is now unused.
		free(spriteData);
	}
 
	GLenum	errGL = glGetError();
 
	NSLog( @"... glGetError = %1 ...", errGL );
 
	NSLog( @"END: mcaTexture::initFromImage( '...' )" );
}

/*
 *  mcaTexture.h
 *
 *  Created by Mitchell Allen on 4/17/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
#ifndef  __MCA_TEXTURE__
#define  __MCA_TEXTURE__
 
#ifdef TARGET_OS_IPHONE
#import 
#import 
#endif
 
class mcaTexture {
 
protected:
 
	GLuint m_texture;	// OpenGL name for the  texture
 
public:
 
	GLuint getTexture();
 
	void initWithChecks();
 
	void initFromImage( NSString *location);
 
};
 
#endif

/*
 *  mcaTexture.mm
 *  mcaGL1
 *
 *  Created by Mitchell Allen on 4/24/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
#include "mcaTexture.h"
 
#define checkImageWidth	64
#define checkImageHeight 64
static GLubyte checkImage[ checkImageHeight][checkImageWidth ][ 4 ];
 
GLuint mcaTexture::getTexture()
{
	return m_texture;
}
 
void mcaTexture::initWithChecks()
{
	NSLog( @"START: mcaTexture::initWithChecks( '...' )" );
 
	int i, j, c;
 
	for( i = 0; i < checkImageHeight; i++ ) {
		for( j = 0; j < checkImageWidth; j++ ) {
			c = ((((i&0x8)==0)^((j&0x8))==0))*255;
			checkImage[i][j][0] = (GLubyte) c;
			checkImage[i][j][1] = (GLubyte) c;
			checkImage[i][j][2] = (GLubyte) c;
			checkImage[i][j][3] = (GLubyte) 255;  // For ghost effect ( 255 / 2 )
		}
	}
 
	GLint					saveName;
 
	// Now use OpenGL ES to generate a name for the texture.
	// Pass by reference so that our texture variable gets set.
	glGenTextures(1, &m_texture);
 
	glGetIntegerv(GL_TEXTURE_BINDING_2D, &saveName);
 
	// Bind the texture name.
	glBindTexture(GL_TEXTURE_2D, m_texture);
 
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 
	glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 
	// Specify a 2D texture image, providing a pointer to the image data in memory
	glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, checkImageWidth, checkImageHeight, 0, GL_RGBA, GL_UNSIGNED_BYTE, checkImage);
	// glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, spriteData);
	// glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, w, h, 0, GL_ALPHA, GL_UNSIGNED_BYTE, spriteData);
 
	glBindTexture(GL_TEXTURE_2D, saveName);
 
	NSLog( @"END: mcaTexture::initWithChecks( '...' )" );
}
 
void mcaTexture::initFromImage( NSString *location)
{
	NSLog( @"START: mcaTexture::initFromImage( '...' )" );
 
	// Creates a Core Graphics image from an image file using our location.
	CGImageRef spriteImage = [UIImage imageNamed:location].CGImage;
 
	// Get the width and height of the image.
	size_t w = CGImageGetWidth(spriteImage);
	size_t h = CGImageGetHeight(spriteImage);
 
	//TODO - resize the width and the height to the nearest power of 2.
 
	//Only create a sprite if we were able to properly load the CG image.
	if(spriteImage)
	{
		NSLog( @"... image loaded successfully ..." );
 
		// Allocated memory needed for the bitmap context
		GLubyte *spriteData = (GLubyte *) malloc(w * h * 4);
 
		// Use the bitmap creation function provided by the Core Graphics framework.
		CGContextRef spriteContext = CGBitmapContextCreate(spriteData, w, h, 8, w * 4, CGImageGetColorSpace(spriteImage), kCGImageAlphaPremultipliedLast);
 
		// After we create the context, we can draw the sprite image to the context.
		CGContextDrawImage(spriteContext, CGRectMake(0.0, 0.0, (CGFloat)w, (CGFloat)h), spriteImage);
 
		// We don't need the context at this point, so we need to release it to avoid memory leaks.
		CGContextRelease(spriteContext);
 
		GLint					saveName;
 
		// Now use OpenGL ES to generate a name for the texture.
		// Pass by reference so that our texture variable gets set.
		glGenTextures(1, &m_texture);
 
		glGetIntegerv(GL_TEXTURE_BINDING_2D, &saveName);
 
		// Bind the texture name.
		glBindTexture(GL_TEXTURE_2D, m_texture);
 
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_CLAMP_TO_EDGE);
		glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_CLAMP_TO_EDGE);
 
		glTexEnvi( GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, GL_MODULATE );
 
		// Specify a 2D texture image, providing a pointer to the image data in memory
		glTexImage2D(GL_TEXTURE_2D, 0, GL_RGBA, w, h, 0, GL_RGBA, GL_UNSIGNED_BYTE, spriteData);
		// glTexImage2D(GL_TEXTURE_2D, 0, GL_RGB, w, h, 0, GL_RGB, GL_UNSIGNED_SHORT_5_6_5, spriteData);
		// glTexImage2D(GL_TEXTURE_2D, 0, GL_ALPHA, w, h, 0, GL_ALPHA, GL_UNSIGNED_BYTE, spriteData);
 
		glBindTexture(GL_TEXTURE_2D, saveName);
 
		// glEnable(GL_LIGHTING);
 
		// Release the image data, which is now unused.
		free(spriteData);
	}
 
	GLenum	errGL = glGetError();
 
	NSLog( @"... glGetError = %1 ...", errGL );
 
	NSLog( @"END: mcaTexture::initFromImage( '...' )" );
}

/*
 *  mcaPlane.mm
 *
 *  Created by Mitchell Allen on 4/17/09.
 *  Copyright 2009 __MyCompanyName__. All rights reserved.
 *
 */
 
#include "mcaPlane.h"
 
void mcaPlane::init( GLfloat xpos, GLfloat ypos, GLfloat fSize )
{
	// ...
}
 
void mcaPlane::initWithTexture( GLfloat xpos, GLfloat ypos, GLfloat fSize, GLuint gTexture )
{
	init( xpos, ypos, fSize );
 
	m_glTexture = gTexture;
}
 
void mcaPlane::paint()
{
	if( ! isVisible() ) return;
 
	//Push the matrix so we can keep it as it was previously.
	glPushMatrix();
 
	glMatrixMode(GL_MODELVIEW);
 
	//Enable 2D textures.
	glEnable(GL_TEXTURE_2D);
 
	//Bind this texture.
	glBindTexture(GL_TEXTURE_2D, m_glTexture );
 
	// Set the texture parameters to use a minifying filter and a linear filer.
	glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
 
	//Store the coordinates/dimensions from the rectangle.
	CGFloat w = m_planeSize;
	CGFloat h = m_planeSize;
 
	//Translate the OpenGL context to the center for rotation.
	glTranslatef( m_xpos + w/2, m_ypos +h/2, 0.0f);
 
	//Apply the rotation over the axis.
	glRotatef(m_spriteRotation, 1.0f, 0.0f, 0.0f);
 
	//Translate back to the top left corner  for drawing.
	glTranslatef(-w/2, -h/2, 0.0f);
 
	//Draw to match 
 
	const GLfloat planeVertices[] = {
 
            // Define the plane face
 
            -1.0,   1.0, 0.0,            // top left
            -1.0, -1.0, 0.0,            // bottom left
              1.0, -1.0, 0.0,            // bottom right
             1.0,    1.0, 0.0,            // top right
       };    
 
	const GLshort squareTextureCoords[] = {
 
           // Plane
 
           0, 1,       // top left
           0, 0,       // bottom left
           1, 0,       // bottom right
           1, 1,       // top right
        };
 
	glScalef( m_planeSize, m_planeSize, m_planeSize );
 
	glRotatef( m_xRot, 1.0f, 0.0f, 0.0f );
	glRotatef( m_yRot, 0.0f, 1.0f, 0.0f );
	glRotatef( m_zRot, 0.0f, 0.0f, 1.0f );
 
	glEnableClientState(GL_VERTEX_ARRAY);
	glEnableClientState(GL_TEXTURE_COORD_ARRAY);
 
	glBindTexture(GL_TEXTURE_2D, m_glTexture );
 
	glVertexPointer(3, GL_FLOAT, 0, planeVertices );
	glTexCoordPointer(2, GL_SHORT, 0, squareTextureCoords );
 
	// Draw the plane in white
	glColor4f(1.0, 1.0, 1.0, 1.0);
        glDrawArrays(GL_TRIANGLE_FAN, 0, 4);
 
	glDisableClientState(GL_VERTEX_ARRAY);
	glDisableClientState(GL_TEXTURE_COORD_ARRAY);
 
	//Allow transparency and blending.
	glEnable(GL_BLEND);
	glBlendFunc(GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA);
 
	//Restore the model view matrix to prevent contamination.
	glPopMatrix();
}

	mcaTexture txChecks, txShip;
 
	NSLog( @"... initializing textures ..." );
 
	txChecks.initWithChecks();
	txShip.initFromImage( @"Ship.png" );
 
	NSLog( @"... initializing objects ..." );
 
	testPlane[ 0 ].initWithTexture(  0.0f, 0.0f, 100.f, txChecks.getTexture() );
	testPlane[ 1 ].initWithTexture( 50.0f, 0.0f, 100.f, txChecks.getTexture() );
	testPlane[ 2 ].initWithTexture(  0.0f, 0.0f, 125.f, txShip.getTexture() );