Mac下cocos3.15如何将c++绑定至javascript（自动生成）详解
2017-11-23 16:26
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How to Use bindings-generator ================== On Windows: ------------ * Make sure that you have installed `android-ndk-r10c` or later. * Download python2.7.3 (32bit) from (http://www.python.org/ftp/python/2.7.3/python-2.7.3.msi). * Add the installed path of python (e.g. C:\Python27) to windows environment variable named 'PATH'. * Download pyyaml from http://pyyaml.org/download/pyyaml/PyYAML-3.11.win32-py2.7.exe and install it. * Download pyCheetah from https://raw.github.com/dumganhar/cocos2d-x/download/downloads/Cheetah.zip, unzip it to "C:\Python27\Lib\site-packages" * Set environment variables (`NDK_ROOT`) and `PYTHON_BIN` * Go to "cocos2d-x/tools/tojs" folder, and run "genbindings.py". The generated codes will be under "cocos\scripting\auto-generated\js-bindings". On MAC: ---------- * The OSX 10.10 has a built-in python2.7 and if your os don't have python2.7 then use [Homebrew](http://brew.sh/) to install the python and use pip install the python dependencies. <pre> brew install python </pre> * Install python dependices by pip. <pre> sudo easy_install pip sudo pip install PyYAML sudo pip install Cheetah </pre> * Download NDK 64bit r10c or later from [Android Ndk](https://developer.android.com/ndk/downloads/index.html) * Run <pre> export NDK_ROOT=/path/to/android-ndk-r10c ./genbindings.py </pre> On Ubuntu Linux 12.04 64bit ------------ * Install python <pre> sudo apt-get install python2.7 </pre> * Install python dependices by pip. <pre> sudo apt-get install python-pip sudo pip install PyYAML sudo pip install Cheetah </pre> * Download NDK 64bit r10c or later from [Android Ndk](https://developer.android.com/ndk/downloads/index.html) * Go to "cocos2d-x/tools/tojs", Run <pre> export NDK_ROOT=/path/to/android-ndk-r10c ./genbindings.py </pre>
2.生成主要流程：
准备好你要绑定的C++的文件 -> 写生成文件的.ini配置文件和.sh 脚本程序 -> 运行 .sh 脚本文件 -> 生成绑定文件 -> 添加到项目中使用
关于设置 NDK PYTHON 路径相关
在 .bash_profile 文件中加入对应目录 使用命令 pico .bash_profile（如果提示文件权限不是自己）
使用命令 sudo chmod g+rw .bash_profile 改回来
export NDK_ROOT="/Users/****/android-ndk-r9b"
export PYTHON_BIN="/System/Library/Frameworks/Python.framework/Versions/2.7/bin$
为了修改即刻生效 执行 命令 source .bash_profile
jsb绑定大概流程就是以上，以下详细介绍从项目创建到 使用bindings-generator生成所需绑定文件、以及使用（以下绑定流程均在mac下进行）
1.新建一个cocos项目
终端 进入 cocos.py文件所在目录：
cd /Users/******/Downloads/cocos2d-x-3.15.1/tools/cocos2d-console/bin
执行 命令 python cocos.py new J
1b60a
sGameDemo -p com.coco2dx.jsdemo -l js -d ~/Desktop （支持3中语言 js cpp lua 我这里选择js）
2.添加自己所需的C++代码
添加一个CCSpriteWithHue.h文件
1 #ifndef __CCSpriteWithHue__
2 #define __CCSpriteWithHue__
3
4 #include "cocos2d.h"
5 class SpriteWithHue: public cocos2d::Sprite
6 {
7 public:
8 static SpriteWithHue* create(const std::string& filename);
9 static SpriteWithHue* create(const std::string& filename, const cocos2d::Rect& rect);
10
11 static SpriteWithHue* createWithTexture(cocos2d::Texture2D *texture);
12 static SpriteWithHue* createWithTexture(cocos2d::Texture2D *texture, const cocos2d::Rect& rect, bool rotated=false);
13
14 static SpriteWithHue* createWithSpriteFrame(cocos2d::SpriteFrame *spriteFrame);
15 static SpriteWithHue* createWithSpriteFrameName(const std::string& spriteFrameName);
16
17 float getHue();
18 void setHue(float hue);
19
20 protected:
21 float _hue;
22 GLfloat _mat[3][3];
23
24 bool initWithTexture(cocos2d::Texture2D *texture);
25 bool initWithTexture(cocos2d::Texture2D *texture, const cocos2d::Rect& rect);
26 virtual bool initWithTexture(cocos2d::Texture2D *texture, const cocos2d::Rect &rect, bool rotated);
27 virtual bool initWithSpriteFrame(cocos2d::SpriteFrame *spriteFrame);
28
29 void setupDefaultSettings();
30 void initShader();
31 const GLchar* shaderBody();
32 virtual void updateColor();
33 void updateColorMatrix();
34 void updateAlpha();
35 GLfloat getAlpha();
36
37 void hueUniformCallback(cocos2d::GLProgram *p, cocos2d::Uniform *u);
38 };
39
40 #endif添加对应cpp文件
1 #include "CCSpriteWithHue.h"
2
3 const GLchar* colorRotationShaderBody();
4 void xRotateMat(float mat[3][3], float rs, float rc);
5 void yRotateMat(float mat[3][3], float rs, float rc);
6 void zRotateMat(float mat[3][3], float rs, float rc);
7 void matrixMult(float a[3][3], float b[3][3], float c[3][3]);
8 void hueMatrix(GLfloat mat[3][3], float angle);
9 void premultiplyAlpha(GLfloat mat[3][3], float alpha);
10
11 SpriteWithHue* SpriteWithHue::create(const std::string& filename)
12 {
13 SpriteWithHue *sprite = new (std::nothrow) SpriteWithHue();
14 if (sprite && sprite->initWithFile(filename))
15 {
16 sprite->autorelease();
17 return sprite;
18 }
19 CC_SAFE_DELETE(sprite);
20 return nullptr;
21 }
22
23 SpriteWithHue* SpriteWithHue::create(const std::string& filename, const cocos2d::Rect& rect)
24 {
25 SpriteWithHue *sprite = new (std::nothrow) SpriteWithHue();
26 if (sprite && sprite->initWithFile(filename, rect))
27 {
28 sprite->autorelease();
29 return sprite;
30 }
31 CC_SAFE_DELETE(sprite);
32 return nullptr;
33 }
34
35 SpriteWithHue* SpriteWithHue::createWithTexture(cocos2d::Texture2D *texture)
36 {
37 SpriteWithHue *sprite = new (std::nothrow) SpriteWithHue();
38 if (sprite && sprite->initWithTexture(texture))
39 {
40 sprite->autorelease();
41 return sprite;
42 }
43 CC_SAFE_DELETE(sprite);
44 return nullptr;
45 }
46
47 SpriteWithHue* SpriteWithHue::createWithTexture(cocos2d::Texture2D *texture, const cocos2d::Rect& rect, bool rotated)
48 {
49 SpriteWithHue *sprite = new (std::nothrow) SpriteWithHue();
50 if (sprite && sprite->initWithTexture(texture, rect, rotated))
51 {
52 sprite->autorelease();
53 return sprite;
54 }
55 CC_SAFE_DELETE(sprite);
56 return nullptr;
57 }
58
59 SpriteWithHue* SpriteWithHue::createWithSpriteFrame(cocos2d::SpriteFrame *spriteFrame)
60 {
61 SpriteWithHue *sprite = new (std::nothrow) SpriteWithHue();
62 if (sprite && spriteFrame && sprite->initWithSpriteFrame(spriteFrame))
63 {
64 sprite->autorelease();
65 return sprite;
66 }
67 CC_SAFE_DELETE(sprite);
68 return nullptr;
69 }
70
71 SpriteWithHue* SpriteWithHue::createWithSpriteFrameName(const std::string& spriteFrameName)
72 {
73 cocos2d::SpriteFrame *frame = cocos2d::SpriteFrameCache::getInstance()->getSpriteFrameByName(spriteFrameName);
74
75 #if COCOS2D_DEBUG > 0
76 char msg[256] = {0};
77 sprintf(msg, "Invalid spriteFrameName: %s", spriteFrameName.c_str());
78 CCASSERT(frame != nullptr, msg);
79 #endif
80
81 return createWithSpriteFrame(frame);
82 }
83
84 bool SpriteWithHue::initWithTexture(cocos2d::Texture2D *texture, const cocos2d::Rect &rect, bool rotated)
85 {
86 bool ret = Sprite::initWithTexture(texture, rect, rotated);
87 if(ret)
88 {
89 setupDefaultSettings();
90 initShader();
91 }
92 return ret;
93 }
94
95 bool SpriteWithHue::initWithTexture(cocos2d::Texture2D *texture)
96 {
97 CCASSERT(texture != nullptr, "Invalid texture for sprite");
98
99 cocos2d::Rect rect = cocos2d::Rect::ZERO;
100 rect.size = texture->getContentSize();
101
102 return initWithTexture(texture, rect);
103 }
104
105 bool SpriteWithHue::initWithTexture(cocos2d::Texture2D *texture, const cocos2d::Rect& rect)
106 {
107 return initWithTexture(texture, rect, false);
108 }
109
110 bool SpriteWithHue::initWithSpriteFrame(cocos2d::SpriteFrame *spriteFrame)
111 {
112 CCASSERT(spriteFrame != nullptr, "");
113
114 bool bRet = initWithTexture(spriteFrame->getTexture(), spriteFrame->getRect());
115 setSpriteFrame(spriteFrame);
116
117 return bRet;
118 }
119
120 void SpriteWithHue::setupDefaultSettings()
121 {
122 _hue = 0.0f;
123 }
124
125 void SpriteWithHue::initShader()
126 {
127 auto glprogram = cocos2d::GLProgramCache::getInstance()->getGLProgram("hue_program");
128 if(!glprogram)
129 {
130 glprogram = cocos2d::GLProgram::createWithByteArrays(cocos2d::ccPositionTextureColor_noMVP_vert, shaderBody());
131 cocos2d::GLProgramCache::getInstance()->addGLProgram(glprogram, "hue_program");
132 }
133 auto glprogramstate = cocos2d::GLProgramState::create(glprogram);
134 setGLProgramState(glprogramstate);
135 updateColor();
136 }
137
138 const GLchar* SpriteWithHue::shaderBody()
139 {
140 return colorRotationShaderBody();
141 }
142
143 void SpriteWithHue::updateColor()
144 {
145 Sprite::updateColor();
146 updateColorMatrix();
147 updateAlpha();
148 }
149
150 void SpriteWithHue::hueUniformCallback(cocos2d::GLProgram *p, cocos2d::Uniform *u)
151 {
152 glUniformMatrix3fv(u->location, 1, GL_FALSE, (GLfloat*)&_mat);
153 }
154
155 void SpriteWithHue::updateColorMatrix()
156 {
157 hueMatrix(_mat, _hue);
158 premultiplyAlpha(_mat, getAlpha());
159
160 getGLProgramState()->setUniformCallback("u_hue", CC_CALLBACK_2(SpriteWithHue::hueUniformCallback, this));
161 }
162
163 void SpriteWithHue::updateAlpha()
164 {
165 getGLProgramState()->setUniformFloat("u_alpha", getAlpha());
166 }
167
168 GLfloat SpriteWithHue::getAlpha()
169 {
170 return _displayedOpacity/255.0f;
171 }
172
173 float SpriteWithHue::getHue()
174 {
175 return _hue;
176 }
177
178 void SpriteWithHue::setHue(float hue)
179 {
180 //CCLOG("setHue->%f",hue);
181 _hue = hue;
182 updateColorMatrix();
183 }
184
185 //shader
186
187 const GLchar * colorRotationShaderBody()
188 {
189 return
190 " \n\
191 #ifdef GL_ES \n\
192 precision mediump float; \n\
193 #endif \n\
194 \n\
195 varying vec2 v_texCoord; \n\
196 uniform mat3 u_hue; \n\
197 uniform float u_alpha; \n\
198 \n\
199 void main() \n\
200 { \n\
201 vec4 pixColor = texture2D(CC_Texture0, v_texCoord); \n\
202 vec3 rgbColor = u_hue * pixColor.rgb; \n\
203 gl_FragColor = vec4(rgbColor, pixColor.a * u_alpha); \n\
204 } \n\
205 ";
206 }
207
208 void xRotateMat(float mat[3][3], float rs, float rc)
209 {
210 mat[0][0] = 1.0;
211 mat[0][1] = 0.0;
212 mat[0][2] = 0.0;
213
214 mat[1][0] = 0.0;
215 mat[1][1] = rc;
216 mat[1][2] = rs;
217
218 mat[2][0] = 0.0;
219 mat[2][1] = -rs;
220 mat[2][2] = rc;
221 }
222
223 void yRotateMat(float mat[3][3], float rs, float rc)
224 {
225 mat[0][0] = rc;
226 mat[0][1] = 0.0;
227 mat[0][2] = -rs;
228
229 mat[1][0] = 0.0;
230 mat[1][1] = 1.0;
231 mat[1][2] = 0.0;
232
233 mat[2][0] = rs;
234 mat[2][1] = 0.0;
235 mat[2][2] = rc;
236 }
237
238
239 void zRotateMat(float mat[3][3], float rs, float rc)
240 {
241 mat[0][0] = rc;
242 mat[0][1] = rs;
243 mat[0][2] = 0.0;
244
245 mat[1][0] = -rs;
246 mat[1][1] = rc;
247 mat[1][2] = 0.0;
248
249 mat[2][0] = 0.0;
250 mat[2][1] = 0.0;
251 mat[2][2] = 1.0;
252 }
253
254 void matrixMult(float a[3][3], float b[3][3], float c[3][3])
255 {
256 int x, y;
257 float temp[3][3];
258
259 for(y=0; y<3; y++) {
260 for(x=0; x<3; x++) {
261 temp[y][x] = b[y][0] * a[0][x] + b[y][1] * a[1][x] + b[y][2] * a[2][x];
262 }
263 }
264 for(y=0; y<3; y++) {
265 for(x=0; x<3; x++) {
266 c[y][x] = temp[y][x];
267 }
268 }
269 }
270
271 void hueMatrix(GLfloat mat[3][3], float angle)
272 {
273 #define SQRT_2 sqrt(2.0)
274 #define SQRT_3 sqrt(3.0)
275
276 float mag, rot[3][3];
277 float xrs, xrc;
278 float yrs, yrc;
279 float zrs, zrc;
280
281 // Rotate the grey vector into positive Z
282 mag = SQRT_2;
283 xrs = 1.0/mag;
284 xrc = 1.0/mag;
285 xRotateMat(mat, xrs, xrc);
286 mag = SQRT_3;
287 yrs = -1.0/mag;
288 yrc = SQRT_2/mag;
289 yRotateMat(rot, yrs, yrc);
290 matrixMult(rot, mat, mat);
291
292 // Rotate the hue
293 zrs = sin(angle);
294 zrc = cos(angle);
295 zRotateMat(rot, zrs, zrc);
296 matrixMult(rot, mat, mat);
297
298 // Rotate the grey vector back into place
299 yRotateMat(rot, -yrs, yrc);
300 matrixMult(rot, mat, mat);
301 xRotateMat(rot, -xrs, xrc);
302 matrixMult(rot, mat, mat);
303 }
304
305 void premultiplyAlpha(GLfloat mat[3][3], float alpha)
306 {
307 for (int i = 0; i < 3; ++i) {
308 for (int j = 0; j < 3; ++j) {
309 mat[i][j] *= alpha;
310 }
311 }312 }[SpriteWithHue]
name = SpriteWithHue
prefix = autoSpriteWithHuebindings
classes = SpriteWithHue
android_headers = -I%(androidndkdir)s/platforms/android-14/arch-arm/usr/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc++/4.8/libs/armeabi-v7a/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc++/4.8/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc++/4.9/libs/armeabi-v7a/include -I%(androidndkdir)s/sources/cxx-stl/gnu-libstdc++/4.9/include
android_flags = -D_SIZE_T_DEFINED_
cocos_flags = -DANDROID
clang_headers = -I%(clangllvmdir)s/lib/clang/%(clang_version)s/include
clang_flags = -nostdinc -x c++ -std=c++11 -U __SSE__
cocos_headers = -I%(cocosdir)s/cocos -I%(cocosdir)s/cocos/platform/android -I%(cocosdir)s/external
simple_test_headers = -I%(cocosdir)s/cocos -I%(cocosdir)s/cocos/gameJsb
extra_arguments = %(android_headers)s %(clang_headers)s %(android_flags)s %(clang_flags)s %(cocos_headers)s %(cocos_flags)s %(simple_test_headers)s %(extra_flags)s
headers = %(cocosdir)s/cocos/gameJsb/CCSpriteWithHue.h
target_namespace =
remove_prefix =
skip =
base_objects =
abstract_classes =
classes_have_type_info = no
rename =
rename_functions =
rename_classes =
# classes for which there will be no "parent" lookup
classes_have_no_parents =
# base classes which will be skipped when their sub-classes found them.
base_classes_to_skip =
# Determining whether to use script object(js object) to control the lifecycle of native(cpp) object or the other way around. Supported values are 'yes' or 'no'.
script_control_cpp = yes
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