1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
|
/*
* cocos2d for iPhone: http://www.cocos2d-iphone.org
*
* Copyright (c) 2008, 2009 Jason Booth
*
* 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 <Foundation/Foundation.h>
#import "CCNode.h"
#import "CCRibbon.h"
/**
* CCMotionStreak manages a Ribbon based on it's motion in absolute space.
* You construct it with a fadeTime, minimum segment size, texture path, texture
* length and color. The fadeTime controls how long it takes each vertex in
* the streak to fade out, the minimum segment size it how many pixels the
* streak will move before adding a new ribbon segement, and the texture
* length is the how many pixels the texture is stretched across. The texture
* is vertically aligned along the streak segemnts.
*
* Limitations:
* CCMotionStreak, by default, will use the GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA blending function.
* This blending function might not be the correct one for certain textures.
* But you can change it by using:
* [obj setBlendFunc: (ccBlendfunc) {new_src_blend_func, new_dst_blend_func}];
*
* @since v0.8.1
*/
@interface CCMotionStreak : CCNode <CCTextureProtocol>
{
CCRibbon* ribbon_;
float segThreshold_;
float width_;
CGPoint lastLocation_;
}
/** Ribbon used by MotionStreak (weak reference) */
@property (nonatomic,readonly) CCRibbon *ribbon;
/** creates the a MotionStreak. The image will be loaded using the TextureMgr. */
+(id)streakWithFade:(float)fade minSeg:(float)seg image:(NSString*)path width:(float)width length:(float)length color:(ccColor4B)color;
/** initializes a MotionStreak. The file will be loaded using the TextureMgr. */
-(id)initWithFade:(float)fade minSeg:(float)seg image:(NSString*)path width:(float)width length:(float)length color:(ccColor4B)color;
/** polling function */
-(void)update:(ccTime)delta;
@end
|
