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authorStarla Insigna <starla4444@gmail.com>2011-07-30 11:19:14 -0400
committerStarla Insigna <starla4444@gmail.com>2011-07-30 11:19:14 -0400
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Initial commit (version 0.2.1)
Diffstat (limited to 'libs/cocos2d/CCRibbon.h')
-rwxr-xr-xlibs/cocos2d/CCRibbon.h117
1 files changed, 117 insertions, 0 deletions
diff --git a/libs/cocos2d/CCRibbon.h b/libs/cocos2d/CCRibbon.h new file mode 100755 index 0000000..53898e6 --- /dev/null +++ b/libs/cocos2d/CCRibbon.h
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1/*
2 * cocos2d for iPhone: http://www.cocos2d-iphone.org
3 *
4 * Copyright (c) 2008, 2009 Jason Booth
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
19 * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 *
24 */
25
26
27#import "CCNode.h"
28#import "CCTexture2D.h"
29#import "CCProtocols.h"
30#import "Platforms/CCGL.h"
31
32/**
33 * A CCRibbon is a dynamically generated list of polygons drawn as a single or series
34 * of triangle strips. The primary use of CCRibbon is as the drawing class of Motion Streak,
35 * but it is quite useful on it's own. When manually drawing a ribbon, you can call addPointAt
36 * and pass in the parameters for the next location in the ribbon. The system will automatically
37 * generate new polygons, texture them accourding to your texture width, etc, etc.
38 *
39 * CCRibbon data is stored in a CCRibbonSegment class. This class statically allocates enough verticies and
40 * texture coordinates for 50 locations (100 verts or 48 triangles). The ribbon class will allocate
41 * new segments when they are needed, and reuse old ones if available. The idea is to avoid constantly
42 * allocating new memory and prefer a more static method. However, since there is no way to determine
43 * the maximum size of some ribbons (motion streaks), a truely static allocation is not possible.
44 *
45 * @since v0.8.1
46 */
47@interface CCRibbon : CCNode <CCTextureProtocol>
48{
49 NSMutableArray* segments_;
50 NSMutableArray* deletedSegments_;
51
52 CGPoint lastPoint1_;
53 CGPoint lastPoint2_;
54 CGPoint lastLocation_;
55 int vertCount_;
56 float texVPos_;
57 float curTime_;
58 float fadeTime_;
59 float delta_;
60 float lastWidth_;
61 float lastSign_;
62 BOOL pastFirstPoint_;
63
64 // Texture used
65 CCTexture2D* texture_;
66
67 // texture length
68 float textureLength_;
69
70 // RGBA protocol
71 ccColor4B color_;
72
73 // blend func
74 ccBlendFunc blendFunc_;
75}
76
77/** Texture used by the ribbon. Conforms to CCTextureProtocol protocol */
78@property (nonatomic,readwrite,retain) CCTexture2D* texture;
79
80/** Texture lengths in pixels */
81@property (nonatomic,readwrite) float textureLength;
82
83/** GL blendind function */
84@property (nonatomic,readwrite,assign) ccBlendFunc blendFunc;
85
86/** color used by the Ribbon (RGBA) */
87@property (nonatomic,readwrite) ccColor4B color;
88
89/** creates the ribbon */
90+(id)ribbonWithWidth:(float)w image:(NSString*)path length:(float)l color:(ccColor4B)color fade:(float)fade;
91/** init the ribbon */
92-(id)initWithWidth:(float)w image:(NSString*)path length:(float)l color:(ccColor4B)color fade:(float)fade;
93/** add a point to the ribbon */
94-(void)addPointAt:(CGPoint)location width:(float)w;
95/** polling function */
96-(void)update:(ccTime)delta;
97/** determine side of line */
98-(float)sideOfLine:(CGPoint)p l1:(CGPoint)l1 l2:(CGPoint)l2;
99
100@end
101
102/** object to hold ribbon segment data */
103@interface CCRibbonSegment : NSObject
104{
105@public
106 GLfloat verts[50*6];
107 GLfloat coords[50*4];
108 GLubyte colors[50*8];
109 float creationTime[50];
110 BOOL finished;
111 uint end;
112 uint begin;
113}
114-(id)init;
115-(void)reset;
116-(void)draw:(float)curTime fadeTime:(float)fadeTime color:(ccColor4B)color;
117@end