From 9cd57b731ab1c666d4a1cb725538fdc137763d12 Mon Sep 17 00:00:00 2001 From: Starla Insigna Date: Sat, 30 Jul 2011 11:19:14 -0400 Subject: Initial commit (version 0.2.1) --- libs/cocos2d/CCAtlasNode.m | 211 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 211 insertions(+) create mode 100755 libs/cocos2d/CCAtlasNode.m (limited to 'libs/cocos2d/CCAtlasNode.m') diff --git a/libs/cocos2d/CCAtlasNode.m b/libs/cocos2d/CCAtlasNode.m new file mode 100755 index 0000000..3f44633 --- /dev/null +++ b/libs/cocos2d/CCAtlasNode.m @@ -0,0 +1,211 @@ +/* + * 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 "CCAtlasNode.h" +#import "ccMacros.h" + + +@interface CCAtlasNode () +-(void) calculateMaxItems; +-(void) updateBlendFunc; +-(void) updateOpacityModifyRGB; +@end + +@implementation CCAtlasNode + +@synthesize textureAtlas = textureAtlas_; +@synthesize blendFunc = blendFunc_; +@synthesize quadsToDraw = quadsToDraw_; + +#pragma mark CCAtlasNode - Creation & Init ++(id) atlasWithTileFile:(NSString*)tile tileWidth:(NSUInteger)w tileHeight:(NSUInteger)h itemsToRender: (NSUInteger) c +{ + return [[[self alloc] initWithTileFile:tile tileWidth:w tileHeight:h itemsToRender:c] autorelease]; +} + +-(id) initWithTileFile:(NSString*)tile tileWidth:(NSUInteger)w tileHeight:(NSUInteger)h itemsToRender: (NSUInteger) c +{ + if( (self=[super init]) ) { + + itemWidth_ = w * CC_CONTENT_SCALE_FACTOR(); + itemHeight_ = h * CC_CONTENT_SCALE_FACTOR(); + + opacity_ = 255; + color_ = colorUnmodified_ = ccWHITE; + opacityModifyRGB_ = YES; + + blendFunc_.src = CC_BLEND_SRC; + blendFunc_.dst = CC_BLEND_DST; + + // double retain to avoid the autorelease pool + // also, using: self.textureAtlas supports re-initialization without leaking + self.textureAtlas = [[CCTextureAtlas alloc] initWithFile:tile capacity:c]; + [textureAtlas_ release]; + + if( ! textureAtlas_ ) { + CCLOG(@"cocos2d: Could not initialize CCAtlasNode. Invalid Texture"); + [self release]; + return nil; + } + + [self updateBlendFunc]; + [self updateOpacityModifyRGB]; + + [self calculateMaxItems]; + + self.quadsToDraw = c; + + } + return self; +} + +-(void) dealloc +{ + [textureAtlas_ release]; + + [super dealloc]; +} + +#pragma mark CCAtlasNode - Atlas generation + +-(void) calculateMaxItems +{ + CGSize s = [[textureAtlas_ texture] contentSizeInPixels]; + itemsPerColumn_ = s.height / itemHeight_; + itemsPerRow_ = s.width / itemWidth_; +} + +-(void) updateAtlasValues +{ + [NSException raise:@"CCAtlasNode:Abstract" format:@"updateAtlasValue not overriden"]; +} + +#pragma mark CCAtlasNode - draw +- (void) draw +{ + [super draw]; + + // Default GL states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_COLOR_ARRAY, GL_TEXTURE_COORD_ARRAY + // Needed states: GL_TEXTURE_2D, GL_VERTEX_ARRAY, GL_TEXTURE_COORD_ARRAY + // Unneeded states: GL_COLOR_ARRAY + glDisableClientState(GL_COLOR_ARRAY); + + glColor4ub( color_.r, color_.g, color_.b, opacity_); + + BOOL newBlend = blendFunc_.src != CC_BLEND_SRC || blendFunc_.dst != CC_BLEND_DST; + if( newBlend ) + glBlendFunc( blendFunc_.src, blendFunc_.dst ); + + [textureAtlas_ drawNumberOfQuads:quadsToDraw_ fromIndex:0]; + + if( newBlend ) + glBlendFunc(CC_BLEND_SRC, CC_BLEND_DST); + + // is this chepear than saving/restoring color state ? + // XXX: There is no need to restore the color to (255,255,255,255). Objects should use the color + // XXX: that they need +// glColor4ub( 255, 255, 255, 255); + + // restore default GL state + glEnableClientState(GL_COLOR_ARRAY); + +} + +#pragma mark CCAtlasNode - RGBA protocol + +- (ccColor3B) color +{ + if(opacityModifyRGB_) + return colorUnmodified_; + + return color_; +} + +-(void) setColor:(ccColor3B)color3 +{ + color_ = colorUnmodified_ = color3; + + if( opacityModifyRGB_ ){ + color_.r = color3.r * opacity_/255; + color_.g = color3.g * opacity_/255; + color_.b = color3.b * opacity_/255; + } +} + +-(GLubyte) opacity +{ + return opacity_; +} + +-(void) setOpacity:(GLubyte) anOpacity +{ + opacity_ = anOpacity; + + // special opacity for premultiplied textures + if( opacityModifyRGB_ ) + [self setColor: colorUnmodified_]; +} + +-(void) setOpacityModifyRGB:(BOOL)modify +{ + ccColor3B oldColor = self.color; + opacityModifyRGB_ = modify; + self.color = oldColor; +} + +-(BOOL) doesOpacityModifyRGB +{ + return opacityModifyRGB_; +} + +-(void) updateOpacityModifyRGB +{ + opacityModifyRGB_ = [textureAtlas_.texture hasPremultipliedAlpha]; +} + +#pragma mark CCAtlasNode - CocosNodeTexture protocol + +-(void) updateBlendFunc +{ + if( ! [textureAtlas_.texture hasPremultipliedAlpha] ) { + blendFunc_.src = GL_SRC_ALPHA; + blendFunc_.dst = GL_ONE_MINUS_SRC_ALPHA; + } +} + +-(void) setTexture:(CCTexture2D*)texture +{ + textureAtlas_.texture = texture; + [self updateBlendFunc]; + [self updateOpacityModifyRGB]; +} + +-(CCTexture2D*) texture +{ + return textureAtlas_.texture; +} + +@end -- cgit 1.4.1